Composition, organic electroluminescent element and electronic apparatus

Abstract

To provide a composition capable of increasing luminous efficiency of an organic electroluminescent element.SOLUTION: A composition contains first and second compounds. The first and second compounds are compounds different from each other. The first and second compounds are independently amine compounds with a refraction index of 1.80 or lower, respectively.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a composition, an organic electroluminescence element, and an electronic device.

Background Art

[0002] An organic electroluminescence element (hereinafter sometimes referred to as an "organic EL element") is applied to full-color displays such as mobile phones and televisions. When a voltage is applied to the organic EL element, holes are injected from the anode into the light-emitting layer, and electrons are injected from the cathode into the light-emitting layer. Then, in the light-emitting layer, the injected holes and electrons recombine to form excitons. At this time, according to the statistical rule of electron spin, singlet excitons are generated at a rate of 25%, and triplet excitons are generated at a rate of 75%. Examples of the performance of the organic EL element include luminance, emission wavelength, chromaticity, luminous efficiency, driving voltage, and lifetime. For example, in Patent Documents 1 to 4, studies have been made to improve the performance of the organic EL element. Patent Documents 1 to 4 disclose an organic EL element in which the hole transport region is composed of a plurality of layers.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a composition capable of improving the luminous efficiency of an organic electroluminescence device. Another object of the present invention is to provide an organic electroluminescence device with improved luminous efficiency, and an electronic device equipped with the organic electroluminescence device.

Means for Solving the Problems

[0005] According to one aspect of the present invention, a composition is provided that contains a first compound and a second compound, the first compound and the second compound are different from each other, and the first compound and the second compound are each independently an amine compound having a refractive index of 1.80 or less.

[0006] According to one aspect of the present invention, an organic electroluminescence device is provided that includes an anode, a cathode, and an organic layer disposed between the anode and the cathode, and at least one layer included in the organic layer contains the composition according to one aspect of the present invention.

[0007] According to one aspect of the present invention, an electronic device equipped with the organic electroluminescence device according to one aspect of the present invention is provided.

Effects of the Invention

[0008] According to one aspect of the present invention, a composition capable of improving the luminous efficiency of an organic electroluminescence device can be provided. According to one aspect of the present invention, an organic electroluminescence device with improved luminous efficiency, and an electronic device equipped with the organic electroluminescence device can be provided.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Mode for Carrying Out the Invention

[0010] [Definition] In this specification, the hydrogen atom includes isotopes with different numbers of neutrons, that is, protium, deuterium, and tritium.

[0011] In this specification, in a chemical structural formula, at a bondable position where symbols such as "R" or "D" representing a deuterium atom are not explicitly shown, it is assumed that a hydrogen atom, that is, a protium atom, a deuterium atom, or a tritium atom is bonded.

[0012] In this specification, the number of ring-forming carbon atoms represents the number of carbon atoms among the atoms constituting the ring itself of a compound having a structure in which atoms are bonded in a ring (for example, a monocyclic compound, a condensed ring compound, a bridged compound, a carbocyclic compound, and a heterocyclic compound). When the ring is substituted by a substituent, the carbon contained in the substituent is not included in the number of ring-forming carbon atoms. The same shall apply to the "number of ring-forming carbon atoms" described below unless otherwise specified. For example, a benzene ring has 6 ring-forming carbon atoms, a naphthalene ring has 10 ring-forming carbon atoms, a pyridine ring has 5 ring-forming carbon atoms, and a furan ring has 4 ring-forming carbon atoms. Also, for example, the number of ring-forming carbon atoms of a 9,9-diphenylfluorenyl group is 13, and the number of ring-forming carbon atoms of a 9,9'-spirobifluorenyl group is 25. Also, when, for example, an alkyl group is substituted as a substituent on a benzene ring, the number of carbon atoms of the alkyl group is not included in the number of ring-forming carbon atoms of the benzene ring. Therefore, the number of ring-forming carbon atoms of the benzene ring substituted with an alkyl group is 6. Also, when, for example, an alkyl group is substituted as a substituent on a naphthalene ring, the number of carbon atoms of the alkyl group is not included in the number of ring-forming carbon atoms of the naphthalene ring. Therefore, the number of ring-forming carbon atoms of the naphthalene ring substituted with an alkyl group is 10.

[0013] In this specification, the number of ring-forming atoms refers to the number of atoms constituting the ring itself of a compound having a structure in which atoms are bonded in a ring (for example, a monocyclic ring, a condensed ring, and a ring assembly) (for example, a monocyclic compound, a condensed ring compound, a crosslinked compound, a carbocyclic compound, and a heterocyclic compound). Atoms that do not constitute the ring (for example, hydrogen atoms that terminate the bonds of the atoms constituting the ring) or atoms included in the substituent when the ring is substituted with a substituent are not included in the number of ring-forming atoms. The same shall apply to the "number of ring-forming atoms" described below unless otherwise specified. For example, the number of ring-forming atoms of a pyridine ring is 6, the number of ring-forming atoms of a quinazoline ring is 10, and the number of ring-forming atoms of a furan ring is 5. For example, the number of hydrogen atoms bonded to a pyridine ring or the number of atoms constituting a substituent is not included in the number of pyridine ring-forming atoms. Therefore, the number of ring-forming atoms of the pyridine ring to which a hydrogen atom or a substituent is bonded is 6. Also, for example, the number of hydrogen atoms bonded to a carbon atom of a quinazoline ring or the number of atoms constituting a substituent is not included in the number of quinazoline ring-forming atoms. Therefore, the number of ring-forming atoms of the quinazoline ring to which a hydrogen atom or a substituent is bonded is 10.

[0014] In this specification, in the expression "substituted or unsubstituted ZZ group having XX to YY carbon atoms", "XX to YY carbon atoms" represents the number of carbon atoms when the ZZ group is unsubstituted, and does not include the number of carbon atoms of the substituent when it is substituted. Here, "YY" is greater than "XX", "XX" means an integer of 1 or more, and "YY" means an integer of 2 or more.

[0015] In this specification, in the expression "ZZ group having XX to YY carbon atoms, which may be substituted or unsubstituted", "XX to YY carbon atoms" represents the number of carbon atoms when the ZZ group is unsubstituted, and does not include the number of carbon atoms of the substituent when it is substituted. Here, "YY" is greater than "XX", "XX" means an integer of 1 or more, and "YY" means an integer of 2 or more.

[0016] In this specification, an unsubstituted ZZ group represents the case where the "ZZ group which may be substituted or unsubstituted" is an "unsubstituted ZZ group", and a substituted ZZ group represents the case where the "ZZ group which may be substituted or unsubstituted" is a "substituted ZZ group". In this specification, "unsubstituted" in the case of "ZZ group which may be substituted or unsubstituted" means that the hydrogen atom in the ZZ group is not replaced by a substituent. The hydrogen atom in the "unsubstituted ZZ group" is a protium atom, a deuterium atom, or a tritium atom. Also, in this specification, "substituted" in the case of "ZZ group which may be substituted or unsubstituted" means that one or more hydrogen atoms in the ZZ group are replaced by a substituent. Similarly, "substituted" in the case of "BB group substituted with AA group" means that one or more hydrogen atoms in the BB group are replaced by the AA group.

[0017] "Substituents described in this specification" Hereinafter, the substituents described in this specification will be described.

[0018] Unless otherwise specified in this specification, the number of ring-forming carbon atoms of the "unsubstituted aryl group" described in this specification is 6 to 50, preferably 6 to 30, more preferably 6 to 18. Unless otherwise specified in this specification, the number of ring-forming atoms of the "unsubstituted heterocyclic group" described in this specification is 5 to 50, preferably 5 to 30, more preferably 5 to 18. Unless otherwise specified in this specification, the number of carbon atoms of the "unsubstituted alkyl group" described in this specification is 1 to 50, preferably 1 to 20, more preferably 1 to 6. Unless otherwise specified herein, the number of carbon atoms in the "unsubstituted alkenyl group" described in this specification is 2 to 50, preferably 2 to 20, more preferably 2 to 6. Unless otherwise specified herein, the number of carbon atoms in the "unsubstituted alkynyl group" described in this specification is 2 to 50, preferably 2 to 20, more preferably 2 to 6. Unless otherwise specified herein, the number of ring-forming carbon atoms in the "unsubstituted cycloalkyl group" described in this specification is 3 to 50, preferably 3 to 20, more preferably 3 to 6. Unless otherwise specified herein, the number of ring-forming carbon atoms in the "unsubstituted arylene group" described in this specification is 6 to 50, preferably 6 to 30, more preferably 6 to 18. Unless otherwise specified herein, the number of ring-forming atoms in the "unsubstituted divalent heterocyclic group" described in this specification is 5 to 50, preferably 5 to 30, more preferably 5 to 18. Unless otherwise specified herein, the number of carbon atoms in the "unsubstituted alkylene group" described in this specification is 1 to 50, preferably 1 to 20, more preferably 1 to 6.

[0019] · "Substituted or unsubstituted aryl group" Specific examples (specific example group G1) of the "substituted or unsubstituted aryl group" described in this specification include the following unsubstituted aryl groups (specific example group G1A) and substituted aryl groups (specific example group G1B), etc. (Here, the unsubstituted aryl group refers to the case where the "substituted or unsubstituted aryl group" is an "unsubstituted aryl group", and the substituted aryl group refers to the case where the "substituted or unsubstituted aryl group" is a "substituted aryl group"). In this specification, when simply referring to an "aryl group", it includes both "unsubstituted aryl group" and "substituted aryl group". "Aryl group for substitution" means a group in which one or more hydrogen atoms of "unsubstituted aryl group" are replaced by substituents. Examples of "aryl group for substitution" include, for example, a group in which one or more hydrogen atoms of the "unsubstituted aryl group" in the following specific example group G1A are replaced by substituents, and examples of aryl groups for substitution in the following specific example group G1B. Note that the examples of "unsubstituted aryl group" and "aryl group for substitution" listed here are only examples, and the "aryl group for substitution" described in this specification includes a group in which a hydrogen atom bonded to a carbon atom of the aryl group itself in the "aryl group for substitution" in the following specific example group G1B is further replaced by a substituent, and a group in which a hydrogen atom of the substituent in the "aryl group for substitution" in the following specific example group G1B is further replaced by a substituent.

[0020] · Unsubstituted aryl group (specific example group G1A): Phenyl group, p - Biphenyl group, m - Biphenyl group, o - Biphenyl group, p - Terphenyl - 4 - yl group, p - Terphenyl - 3 - yl group, p - Terphenyl - 2 - yl group, m - Terphenyl - 4 - yl group, m - Terphenyl - 3 - yl group, m - Terphenyl - 2 - yl group, o - Terphenyl - 4 - yl group, o - Terphenyl - 3 - yl group, o - Terphenyl - 2 - yl group, 1 - Naphthyl group, 2 - Naphthyl group, Anthryl group, Benzoanthryl group, Phenanthryl group, Benzophenanthryl group, Phenalenyl group, Pyrenyl group, Chrysenyl group, Benzochrysenyl group, Triphenylenyl group, Benzotriphenylenyl group, Tetracenyl group, Pentacenyl group, Fluorenyl group, 9,9'-Spirobifluorenyl group, Benzofluorenyl group, Dibenzofluorenyl group, Fluoranthenyl group, Benzofluoranhenyl group, Perylenyl group, and A monovalent aryl group derived by removing one hydrogen atom from the ring structures represented by the following general formulas (TEMP-1) to (TEMP-15).

[0021]

Chemical formula

[0022]

Chemical formula

[0023] · Substituted aryl group (specific example group G1B): o-Tolyl group, m-Tolyl group, p-Tolyl group, Para-Xylyl group, Meta-Xylyl group, Ortho-Xylyl group, Para-Isopropylphenyl group, Meta-Isopropylphenyl group, Ortho-Isopropylphenyl group, Para-t-Butylphenyl group, Meta-t-Butylphenyl group, Ortho-t-Butylphenyl group, 3,4,5-Trimethylphenyl group, 9,9-Dimethylfluorenyl group, 9,9-Diphenylfluorenyl group, 9,9-Bis(4-methylphenyl)fluorenyl group, 9,9-Bis(4-isopropylphenyl)fluorenyl group, 9,9-bis(4-t-butylphenyl)fluorenyl group, cyanophenyl group, triphenylsilylphenyl group, trimethylsilylphenyl group, phenylnaphthyl group, naphthylphenyl group, and a group in which one or more hydrogen atoms of a monovalent group derived from the ring structures represented by the general formulas (TEMP-1) to (TEMP-15) are replaced with substituents.

[0024] · "Substituted or unsubstituted heterocyclic group" The "heterocyclic group" described in this specification is a cyclic group containing at least one heteroatom in the ring-forming atoms. Specific examples of the heteroatom include a nitrogen atom, an oxygen atom, a sulfur atom, a silicon atom, a phosphorus atom, and a boron atom. The "heterocyclic group" described in this specification is a monocyclic group or a condensed-ring group. The "heterocyclic group" described in this specification is an aromatic heterocyclic group or a non-aromatic heterocyclic group. Specific examples (specific example group G2) of the "substituted or unsubstituted heterocyclic group" described in this specification include the following unsubstituted heterocyclic groups (specific example group G2A), substituted heterocyclic groups (specific example group G2B), and the like. (Here, the unsubstituted heterocyclic group refers to the case where the "substituted or unsubstituted heterocyclic group" is an "unsubstituted heterocyclic group", and the substituted heterocyclic group refers to the case where the "substituted or unsubstituted heterocyclic group" is a "substituted heterocyclic group".) In this specification, when simply referring to a "heterocyclic group", it includes both an "unsubstituted heterocyclic group" and a "substituted heterocyclic group". "Substituted heterocyclic group" means a group in which one or more hydrogen atoms of "unsubstituted heterocyclic group" are replaced by substituents. Specific examples of "substituted heterocyclic group" include groups in which hydrogen atoms of "unsubstituted heterocyclic group" in the following specific example group G2A are replaced, and examples of substituted heterocyclic groups in the following specific example group G2B, etc. It should be noted that the examples of "unsubstituted heterocyclic group" and "substituted heterocyclic group" listed here are only examples, and the "substituted heterocyclic group" described in this specification includes groups in which hydrogen atoms bonded to the ring-forming atoms of the heterocyclic group itself in the "substituted heterocyclic group" of specific example group G2B are further replaced by substituents, and groups in which hydrogen atoms of the substituents in the "substituted heterocyclic group" of specific example group G2B are further replaced by substituents.

[0025] Specific example group G2A includes, for example, the following unsubstituted heterocyclic groups containing a nitrogen atom (specific example group G2A1), unsubstituted heterocyclic groups containing an oxygen atom (specific example group G2A2), unsubstituted heterocyclic groups containing a sulfur atom (specific example group G2A3), and monovalent heterocyclic groups derived by removing one hydrogen atom from the ring structures represented by the following general formulas (TEMP-16) to (TEMP-33) (specific example group G2A4).

[0026] Specific example group G2B includes, for example, the following substituted heterocyclic groups containing a nitrogen atom (specific example group G2B1), substituted heterocyclic groups containing an oxygen atom (specific example group G2B2), substituted heterocyclic groups containing a sulfur atom (specific example group G2B3), and groups in which one or more hydrogen atoms of the monovalent heterocyclic groups derived from the ring structures represented by the following general formulas (TEMP-16) to (TEMP-33) are replaced by substituents (specific example group G2B4).

[0027] · Unsubstituted heterocyclic group containing a nitrogen atom (specific example group G2A1): Pyrrolyl group, Imidazolyl group, Pyrazolyl group, Triazolyl group, Tetrazolyl group, Oxazolyl group, Isoxazolyl group, Oxadiazolyl group, Thiazolyl group, Isothiazolyl group, a thiadiazolyl group, a pyridyl group, a pyridazinyl group, a pyrimidinyl group, a pyrazinyl group, a triazinyl group, an indolyl group, an isoindolyl group, an indolizinyl group, a quinolizinyl group, a quinolyl group, an isoquinolyl group, a cinnolyl group, a phthalazinyl group, a quinazolinyl group, a quinoxalinyl group, a benzimidazolyl group, an indazolyl group, a phenanthrolinyl group, a phenanthridinyl group, an acridinyl group, a phenazinyl group, a carbazolyl group, a benzocarbazolyl group, a morpholino group, a phenoxazinyl group, a phenothiazinyl group, an azacarbazolyl group and a diazacarbazolyl group.

[0028] ·an unsubstituted heterocyclic group containing an oxygen atom (specific example group G2A2): a furyl group, an oxazolyl group, an isoxazolyl group, an oxadiazolyl group, a xanthenyl group, a benzofuranyl group, an isobenzofuranyl group, a dibenzofuranyl group, a naphthobenzofuranyl group, a benzoxazolyl group, a benzoisoxazolyl group, a phenoxazinyl group, a morpholino group, a dinaphthofuranyl group, Azadibenzofuranyl group, Diazadibenzofuranyl group, Azananofuranyl group, and Diazananofuranyl group.

[0029] · Unsubstituted heterocyclic group containing a sulfur atom (specific example group G2A3): Thienyl group, Thiazolyl group, Isothiazolyl group, Thiadiazolyl group, Benzothiophenyl group (benzothienyl group), Isobenzothiophenyl group (isobenzothienyl group), Dibenzothiophenyl group (dibenzothienyl group), Naphthobenzothiophenyl group (naphthobenzothienyl group), Benzothiazolyl group, Benzisothiazolyl group, Phenothiazinyl group, Dinaphthothiophenyl group (dinaphthothienyl group), Azadibenzothiophenyl group (azadibenzothienyl group), Diazadibenzothiophenyl group (diazadibenzothienyl group), Azananobenzothiophenyl group (azananobenzothienyl group), and Diazananobenzothiophenyl group (diazananobenzothienyl group).

[0030] · Monovalent heterocyclic group derived by removing one hydrogen atom from the ring structures represented by the following general formulas (TEMP-16) to (TEMP-33) (specific example group G2A4):

[0031]

Chemical formula

[0032]

Chemical formula

[0033] In the general formulas (TEMP-16) to (TEMP-33), X A and Y A are each independently an oxygen atom, a sulfur atom, NH, or CH 2 . However, at least one of X A and Y A is an oxygen atom, a sulfur atom, or NH. In the general formulas (TEMP-16) to (TEMP-33), at least one of X A and Y A is NH or CH 2 . In the case where it is so, the monovalent heterocyclic group derived from the ring structure represented by the general formulas (TEMP-16) to (TEMP-33) includes a monovalent group obtained by removing one hydrogen atom from these NH or CH 2 .

[0034] · Substituted heterocyclic groups containing a nitrogen atom (specific example group G2B1): (9-Phenyl)carbazolyl group, (9-Biphenylyl)carbazolyl group, (9-Phenyl)phenylcarbazolyl group, (9-Naphthyl)carbazolyl group, Diphenylcarbazol-9-yl group, Phenylcarbazol-9-yl group, Methylbenzimidazolyl group, Ethylbenzimidazolyl group, Phenyltriazinyl group, Biphenylyltriazinyl group, Diphenyltriazinyl group, Phenylquinazolinyl group, and Biphenylylquinazolinyl group.

[0035] · Substituted heterocyclic groups containing an oxygen atom (specific example group G2B2): Phenyldibenzofuranyl group, Methyldibenzofuranyl group, t-Butyldibenzofuranyl group, and A monovalent residue of spiro[9H-xanthene-9,9'-[9H]fluorene].

[0036] · Substituted heterocyclic groups containing a sulfur atom (specific example group G2B3): Phenyldibenzothiophenyl group, Methyldibenzothiophenyl group, t-Butyldibenzothiophenyl group, and A monovalent residue of spiro[9H-thioxanthene-9,9'-[9H]fluorene].

[0037] · A group in which one or more hydrogen atoms of a monovalent heterocyclic group derived from the ring structures represented by the general formulas (TEMP-16) to (TEMP-33) are replaced with substituents (specific example group G2B4):

[0038] The above-mentioned "one or more hydrogen atoms of a monovalent heterocyclic group" means one or more hydrogen atoms selected from the hydrogen atoms bonded to the ring-forming carbon atoms of the monovalent heterocyclic group, the hydrogen atoms bonded to the nitrogen atom when at least one of XA and YA is NH, and the hydrogen atoms of the methylene group when one of XA and YA is CH2.

[0039] · "Substituted or unsubstituted alkyl group" Specific examples (specific example group G3) of the "substituted or unsubstituted alkyl group" described in this specification include the following unsubstituted alkyl groups (specific example group G3A) and substituted alkyl groups (specific example group G3B). (Here, the unsubstituted alkyl group refers to the case where the "substituted or unsubstituted alkyl group" is an "unsubstituted alkyl group", and the substituted alkyl group refers to the case where the "substituted or unsubstituted alkyl group" is a "substituted alkyl group".) Hereinafter, when simply referred to as an "alkyl group", it includes both "unsubstituted alkyl groups" and "substituted alkyl groups". "Substituted alkyl group" means a group in which one or more hydrogen atoms in an "unsubstituted alkyl group" are replaced by substituents. Specific examples of the "substituted alkyl group" include groups in which one or more hydrogen atoms in the following "unsubstituted alkyl group" (specific example group G3A) are replaced by substituents, and examples of the substituted alkyl group (specific example group G3B). In the present specification, the alkyl group in the "unsubstituted alkyl group" means a chain alkyl group. Therefore, the "unsubstituted alkyl group" includes a linear "unsubstituted alkyl group" and a branched "unsubstituted alkyl group". Note that the examples of the "unsubstituted alkyl group" and the examples of the "substituted alkyl group" listed here are only examples, and the "substituted alkyl group" described in the present specification includes a group in which a hydrogen atom of the alkyl group itself in the "substituted alkyl group" of the specific example group G3B is further replaced by a substituent, and a group in which a hydrogen atom of the substituent in the "substituted alkyl group" of the specific example group G3B is further replaced by a substituent.

[0040] · Unsubstituted alkyl group (specific example group G3A): Methyl group, Ethyl group, n-Propyl group, Isopropyl group, n-Butyl group, Isobutyl group, s-Butyl group, and t-Butyl group.

[0041] · Substituted alkyl group (specific example group G3B): Heptafluoropropyl group (including isomers), Pentafluoroethyl group, 2,2,2-Trifluoroethyl group, and Trifluoromethyl group.

[0042] · "Substituted or unsubstituted alkenyl group" Specific examples (specific example group G4) of the "substituted or unsubstituted alkenyl group" described in this specification include the following unsubstituted alkenyl groups (specific example group G4A), substituted alkenyl groups (specific example group G4B), and the like. (Here, the unsubstituted alkenyl group refers to the case where the "substituted or unsubstituted alkenyl group" is an "unsubstituted alkenyl group", and the "substituted alkenyl group" refers to the case where the "substituted or unsubstituted alkenyl group" is a "substituted alkenyl group".) In this specification, when simply referring to an "alkenyl group", it includes both "unsubstituted alkenyl groups" and "substituted alkenyl groups". The "substituted alkenyl group" means a group in which one or more hydrogen atoms in the "unsubstituted alkenyl group" are replaced by substituents. Specific examples of the "substituted alkenyl group" include groups in which the following "unsubstituted alkenyl groups" (specific example group G4A) have substituents, and examples of substituted alkenyl groups (specific example group G4B). Note that the examples of the "unsubstituted alkenyl group" and the "substituted alkenyl group" listed here are merely examples, and the "substituted alkenyl group" described in this specification includes groups in which the hydrogen atoms of the alkenyl group itself in the "substituted alkenyl group" of specific example group G4B are further replaced by substituents, and groups in which the hydrogen atoms of the substituents in the "substituted alkenyl group" of specific example group G4B are further replaced by substituents.

[0043] · Unsubstituted alkenyl groups (specific example group G4A): Vinyl group, Allyl group, 1-Butenyl group, 2-Butenyl group, and 3-Butenyl group.

[0044] · Substituted alkenyl groups (specific example group G4B): 1,3-Butadienyl group, 1-Methylvinyl group, 1-Methylallyl group, 1,1-Dimethylallyl group, 2-Methylallyl group, and 1,2-Dimethylallyl group.

[0045] · "Substituted or unsubstituted alkynyl group" Specific examples (specific example group G5) of the "substituted or unsubstituted alkynyl group" described in this specification include the following unsubstituted alkynyl groups (specific example group G5A), etc. (Here, the unsubstituted alkynyl group refers to the case where the "substituted or unsubstituted alkynyl group" is an "unsubstituted alkynyl group"). Hereinafter, when simply referring to an "alkynyl group", it includes both an "unsubstituted alkynyl group" and a "substituted alkynyl group". The "substituted alkynyl group" means a group in which one or more hydrogen atoms in the "unsubstituted alkynyl group" are replaced by substituents. Specific examples of the "substituted alkynyl group" include groups in which one or more hydrogen atoms in the following "unsubstituted alkynyl groups" (specific example group G5A) are replaced by substituents, etc.

[0046] · Unsubstituted alkynyl group (specific example group G5A): Ethynyl group.

[0047] · "Substituted or unsubstituted cycloalkyl group" Specific examples (specific example group G6) of the "substituted or unsubstituted cycloalkyl group" described in this specification include the following unsubstituted cycloalkyl groups (specific example group G6A) and substituted cycloalkyl groups (specific example group G6B), etc. (Here, the unsubstituted cycloalkyl group refers to the case where the "substituted or unsubstituted cycloalkyl group" is an "unsubstituted cycloalkyl group", and the substituted cycloalkyl group refers to the case where the "substituted or unsubstituted cycloalkyl group" is a "substituted cycloalkyl group"). In this specification, when simply referring to a "cycloalkyl group", it includes both an "unsubstituted cycloalkyl group" and a "substituted cycloalkyl group". The "substituted cycloalkyl group" means a group in which one or more hydrogen atoms in the "unsubstituted cycloalkyl group" are replaced by substituents. Specific examples of the "substituted cycloalkyl group" include groups in which one or more hydrogen atoms in the following "unsubstituted cycloalkyl group" (specific example group G6A) are replaced by substituents, and examples of the substituted cycloalkyl group (specific example group G6B). Note that the examples of the "unsubstituted cycloalkyl group" and the "substituted cycloalkyl group" listed here are only examples, and the "substituted cycloalkyl group" described in this specification includes groups in which one or more hydrogen atoms bonded to the carbon atoms of the cycloalkyl group itself in the "substituted cycloalkyl group" of specific example group G6B are replaced by substituents, and groups in which the hydrogen atoms of the substituents in the "substituted cycloalkyl group" of specific example group G6B are further replaced by substituents.

[0048] · Unsubstituted cycloalkyl group (specific example group G6A): Cyclopropyl group, Cyclobutyl group, Cyclopentyl group, Cyclohexyl group, 1-Adamantyl group, 2-Adamantyl group, 1-Norbornyl group, and 2-Norbornyl group.

[0049] · Substituted cycloalkyl group (specific example group G6B): 4-Methylcyclohexyl group.

[0050] · Group represented by "-Si(R 901 )(R 902 )(R 903 )" Specific examples (specific example group G7) of the group represented by -Si(R 901 )(R 902 )(R 903 ) described in this specification include -Si(G1)(G1)(G1), -Si(G1)(G2)(G2), -Si(G1)(G1)(G2), -Si(G2)(G2)(G2), -Si(G3)(G3)(G3), and -Si(G6)(G6)(G6) may be mentioned. Here, G1 is the "substituted or unsubstituted aryl group" described in specific example group G1. G2 is the "substituted or unsubstituted heterocyclic group" described in specific example group G2. G3 is the "substituted or unsubstituted alkyl group" described in specific example group G3. G6 is the "substituted or unsubstituted cycloalkyl group" described in specific example group G6. The plurality of G1 in -Si(G1)(G1)(G1) are the same as or different from each other. The plurality of G2 in -Si(G1)(G2)(G2) are the same as or different from each other. The plurality of G1 in -Si(G1)(G1)(G2) are the same as or different from each other. The plurality of G2 in -Si(G2)(G2)(G2) are the same as or different from each other. The plurality of G3 in -Si(G3)(G3)(G3) are the same as or different from each other. The plurality of G6 in -Si(G6)(G6)(G6) are the same as or different from each other.

[0051] · "group represented by -O-(R 904 )" Specific examples (specific example group G8) of the group represented by -O-(R 904 ) described in this specification include -O(G1), -O(G2), -O(G3), and -O(G6) may be mentioned. Here, G1 is the "substituted or unsubstituted aryl group" described in specific example group G1. G2 is the "substituted or unsubstituted heterocyclic group" described in specific example group G2. G3 is the "substituted or unsubstituted alkyl group" described in the specific example group G3. G6 is the "substituted or unsubstituted cycloalkyl group" described in the specific example group G6.

[0052] · The group represented by "-S-(R 905 )" Specific examples (specific example group G9) of the group represented by -S-(R 905 ) described in this specification include -S(G1), -S(G2), -S(G3), and -S(G6) may be mentioned. Here, G1 is the "substituted or unsubstituted aryl group" described in the specific example group G1. G2 is the "substituted or unsubstituted heterocyclic group" described in the specific example group G2. G3 is the "substituted or unsubstituted alkyl group" described in the specific example group G3. G6 is the "substituted or unsubstituted cycloalkyl group" described in the specific example group G6.

[0053] · The group represented by "-N(R 906 )(R 907 )" Specific examples (specific example group G10) of the group represented by -N(R 906 )(R 907 ) described in this specification include -N(G1)(G1), -N(G2)(G2), -N(G1)(G2), -N(G3)(G3), and -N(G6)(G6) may be mentioned. Here, G1 is the "substituted or unsubstituted aryl group" described in the specific example group G1. G2 is the "substituted or unsubstituted heterocyclic group" described in the specific example group G2. G3 is the "substituted or unsubstituted alkyl group" described in the specific example group G3. G6 is a "substituted or unsubstituted cycloalkyl group" as described in Specific Example Group G6. - In -N(G1)(G1), the plurality of G1s are the same as or different from each other. - In -N(G2)(G2), the plurality of G2s are the same as or different from each other. - In -N(G3)(G3), the plurality of G3s are the same as or different from each other. - In -N(G6)(G6), the plurality of G6s are the same as or different from each other.

[0054] · "Halogen atom" Specific examples (Specific Example Group G11) of the "halogen atom" described in this specification include a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, etc.

[0055] · "Substituted or unsubstituted fluoroalkyl group" The "substituted or unsubstituted fluoroalkyl group" described in this specification means a group in which at least one hydrogen atom bonded to a carbon atom constituting the alkyl group in the "substituted or unsubstituted alkyl group" is replaced by a fluorine atom, and also includes a group in which all hydrogen atoms bonded to the carbon atoms constituting the alkyl group in the "substituted or unsubstituted alkyl group" are replaced by fluorine atoms (perfluoro group). Unless otherwise specified in this specification, the number of carbon atoms in the "unsubstituted fluoroalkyl group" is 1 to 50, preferably 1 to 30, more preferably 1 to 18. The "substituted fluoroalkyl group" means a group in which one or more hydrogen atoms in the "fluoroalkyl group" are replaced by substituents. In addition, the "substituted fluoroalkyl group" described in this specification includes a group in which one or more hydrogen atoms bonded to the carbon atoms of the alkyl chain in the "substituted fluoroalkyl group" are further replaced by substituents, and a group in which one or more hydrogen atoms of the substituents in the "substituted fluoroalkyl group" are further replaced by substituents. Specific examples of the "unsubstituted fluoroalkyl group" include examples of groups in which one or more hydrogen atoms in the above-mentioned "alkyl group" (Specific Example Group G3) are replaced by fluorine atoms.

[0056] · "Substituted or unsubstituted haloalkyl group" As used herein, the "substituted or unsubstituted haloalkyl group" means a group in which at least one hydrogen atom bonded to a carbon atom constituting the alkyl group in the "substituted or unsubstituted alkyl group" is replaced by a halogen atom, and also includes a group in which all hydrogen atoms bonded to the carbon atoms constituting the alkyl group in the "substituted or unsubstituted alkyl group" are replaced by halogen atoms. Unless otherwise specified herein, the number of carbon atoms in the "unsubstituted haloalkyl group" is 1 to 50, preferably 1 to 30, and more preferably 1 to 18. The "substituted haloalkyl group" means a group in which one or more hydrogen atoms in the "haloalkyl group" are replaced by substituents. In addition, the "substituted haloalkyl group" as described herein includes a group in which one or more hydrogen atoms bonded to the carbon atoms of the alkyl chain in the "substituted haloalkyl group" are further replaced by substituents, and a group in which one or more hydrogen atoms of the substituents in the "substituted haloalkyl group" are further replaced by substituents. Specific examples of the "unsubstituted haloalkyl group" include examples of groups in which one or more hydrogen atoms in the above-mentioned "alkyl group" (specific example group G3) are replaced by halogen atoms. The haloalkyl group may be referred to as a halogenated alkyl group.

[0057] · "Substituted or unsubstituted alkoxy group" Specific examples of the "substituted or unsubstituted alkoxy group" as described herein are groups represented by -O(G3), where G3 is the "substituted or unsubstituted alkyl group" described in specific example group G3. Unless otherwise specified herein, the number of carbon atoms in the "unsubstituted alkoxy group" is 1 to 50, preferably 1 to 30, and more preferably 1 to 18.

[0058] · "Substituted or unsubstituted alkylthio group" Specific examples of the "substituted or unsubstituted alkylthio group" described in this specification are groups represented by -S(G3), where G3 is the "substituted or unsubstituted alkyl group" described in Specific Example Group G3. The carbon number of the "unsubstituted alkylthio group" is 1 to 50, preferably 1 to 30, and more preferably 1 to 18, unless otherwise specified in this specification.

[0059] · "Substituted or unsubstituted aryloxy group" Specific examples of the "substituted or unsubstituted aryloxy group" described in this specification are groups represented by -O(G1), where G1 is the "substituted or unsubstituted aryl group" described in Specific Example Group G1. The number of ring-forming carbon atoms of the "unsubstituted aryloxy group" is 6 to 50, preferably 6 to 30, and more preferably 6 to 18, unless otherwise specified in this specification.

[0060] · "Substituted or unsubstituted arylthio group" Specific examples of the "substituted or unsubstituted arylthio group" described in this specification are groups represented by -S(G1), where G1 is the "substituted or unsubstituted aryl group" described in Specific Example Group G1. The number of ring-forming carbon atoms of the "unsubstituted arylthio group" is 6 to 50, preferably 6 to 30, and more preferably 6 to 18, unless otherwise specified in this specification.

[0061] · "Substituted or unsubstituted trialkylsilyl group" Specific examples of the "trialkylsilyl group" described in this specification are groups represented by -Si(G3)(G3)(G3), where G3 is the "substituted or unsubstituted alkyl group" described in Specific Example Group G3. The plurality of G3 in -Si(G3)(G3)(G3) are the same as or different from each other. The carbon number of each alkyl group of the "trialkylsilyl group" is 1 to 50, preferably 1 to 20, and more preferably 1 to 6, unless otherwise specified in this specification.

[0062] · "Substituted or unsubstituted aralkyl group" Specific examples of the "substituted or unsubstituted aralkyl group" described in this specification include a group represented by -(G3)-(G1), where G3 is the "substituted or unsubstituted alkyl group" described in Specific Example Group G3, and G1 is the "substituted or unsubstituted aryl group" described in Specific Example Group G1. Therefore, the "aralkyl group" is a group in which a hydrogen atom of the "alkyl group" is replaced with an "aryl group" as a substituent, and is one embodiment of the "substituted alkyl group". The "unsubstituted aralkyl group" is an "unsubstituted alkyl group" substituted with an "unsubstituted aryl group", and the number of carbon atoms of the "unsubstituted aralkyl group" is 7 to 50, preferably 7 to 30, more preferably 7 to 18, unless otherwise specified in this specification. Specific examples of the "substituted or unsubstituted aralkyl group" include a benzyl group, 1-phenylethyl group, 2-phenylethyl group, 1-phenylisopropyl group, 2-phenylisopropyl group, phenyl-t-butyl group, α-naphthylmethyl group, 1-α-naphthylethyl group, 2-α-naphthylethyl group, 1-α-naphthylisopropyl group, 2-α-naphthylisopropyl group, β-naphthylmethyl group, 1-β-naphthylethyl group, 2-β-naphthylethyl group, 1-β-naphthylisopropyl group, and 2-β-naphthylisopropyl group, etc.

[0063] The substituted or unsubstituted aryl group described in this specification is preferably a phenyl group, p-biphenyl group, m-biphenyl group, o-biphenyl group, p-terphenyl-4-yl group, p-terphenyl-3-yl group, p-terphenyl-2-yl group, m-terphenyl-4-yl group, m-terphenyl-3-yl group, m-terphenyl-2-yl group, o-terphenyl-4-yl group, o-terphenyl-3-yl group, o-terphenyl-2-yl group, 1-naphthyl group, 2-naphthyl group, anthryl group, phenanthryl group, pyrenyl group, chrysenyl group, triphenylenyl group, fluorenyl group, 9,9'-spirobifluorenyl group, 9,9-dimethylfluorenyl group, and 9,9-diphenylfluorenyl group, etc., unless otherwise specified in this specification.

[0064] The substituted or unsubstituted heterocyclic group described in this specification is preferably a pyridyl group, pyrimidinyl group, triazinyl group, quinolyl group, isoquinolyl group, quinazolinyl group, benzimidazolyl group, phenanthrolinyl group, carbazolyl group (1-carbazolyl group, 2-carbazolyl group, 3-carbazolyl group, 4-carbazolyl group, or 9-carbazolyl group), benzocarbazolyl group, azacarbazolyl group, diazacarbazolyl group, dibenzofuranyl group, naphthobenzofuranyl group, azadibenzofuranyl group, diazadibenzofuranyl group, dibenzothiophenyl group, naphthobenzothiophenyl group, azadibenzothiophenyl group, diazadibenzothiophenyl group, (9-phenyl)carbazolyl group ((9-phenyl)carbazol-1-yl group, (9-phenyl)carbazol-2-yl group, (9-phenyl)carbazol-3-yl group, or (9-phenyl)carbazol-4-yl group), (9-biphenylyl)carbazolyl group, (9-phenyl)phenylcarbazolyl group, diphenylcarbazol-9-yl group, phenylcarbazol-9-yl group, phenyltriazinyl group, biphenylyltriazinyl group, diphenyltriazinyl group, phenyldibenzofuranyl group, and phenyldibenzothiophenyl group, etc., unless otherwise described in this specification.

[0065] In this specification, the carbazolyl group is specifically one of the following groups, unless otherwise described in this specification.

[0066]

Chemical formula

[0067] In this specification, the (9-phenyl)carbazolyl group is specifically one of the following groups, unless otherwise described in this specification.

[0068]

Chemical formula

[0069] In the general formulas (TEMP-Cz1) to (TEMP-Cz9), * represents the bonding position.

[0070] In this specification, unless otherwise specified herein, the dibenzofuranyl group and the dibenzothiophenyl group are specifically any of the following groups.

[0071]

Chemical formula

[0072] In the general formulas (TEMP-34) to (TEMP-41), * represents the bonding position.

[0073] Unless otherwise specified herein, the substituted or unsubstituted alkyl group described in this specification is preferably a methyl group, an ethyl group, a propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a t-butyl group, etc.

[0074] · "Substituted or unsubstituted arylene group" Unless otherwise specified, the "substituted or unsubstituted arylene group" described in this specification is a divalent group derived by removing one hydrogen atom on the aryl ring from the above "substituted or unsubstituted aryl group". Specific examples (specific example group G12) of the "substituted or unsubstituted arylene group" include divalent groups derived by removing one hydrogen atom on the aryl ring from the "substituted or unsubstituted aryl group" described in specific example group G1, etc.

[0075] · "Substituted or unsubstituted divalent heterocyclic group" Unless otherwise specified, the "substituted or unsubstituted divalent heterocyclic group" described in this specification is a divalent group derived by removing one hydrogen atom on the heterocyclic ring from the above "substituted or unsubstituted heterocyclic group". Specific examples (specific example group G13) of the "substituted or unsubstituted divalent heterocyclic group" include divalent groups derived by removing one hydrogen atom on the heterocyclic ring from the "substituted or unsubstituted heterocyclic group" described in specific example group G2, etc.

[0076] · "Substituted or unsubstituted alkylene group" Unless otherwise specified, the "substituted or unsubstituted alkylene group" described in this specification is a divalent group derived by removing one hydrogen atom on the alkyl chain from the above-mentioned "substituted or unsubstituted alkyl group". Specific examples (specific example group G14) of the "substituted or unsubstituted alkylene group" include divalent groups derived by removing one hydrogen atom on the alkyl chain from the "substituted or unsubstituted alkyl group" described in specific example group G3, and the like.

[0077] Unless otherwise specified in this specification, the substituted or unsubstituted arylene group described in this specification is preferably a group of any of the following general formulas (TEMP-42) to (TEMP-68).

[0078] [Chemical formula]

[0079] [Chemical formula]

[0080] In the general formulas (TEMP-42) to (TEMP-52), Q 1 ~Q 10 are each independently a hydrogen atom or a substituent. In the general formulas (TEMP-42) to (TEMP-52), * represents the bonding position.

[0081] [Chemical formula]

[0082] 1 ~Q 10 are each independently a hydrogen atom or a substituent. Formula Q 9 and Q 10They may be bonded to each other via a single bond to form a ring. In the general formulas (TEMP-53) to (TEMP-62), * represents the bonding position.

[0083]

Chemical formula

[0084] In the general formulas (TEMP-63) to (TEMP-68), Q 1 ~Q 8 are each independently a hydrogen atom or a substituent. In the general formulas (TEMP-63) to (TEMP-68), * represents the bonding position.

[0085] Unless otherwise specified herein, the substituted or unsubstituted divalent heterocyclic group described herein is preferably a group of any of the following general formulas (TEMP-69) to (TEMP-102).

[0086]

Chemical formula

[0087]

Chemical formula

[0088]

Chemical formula

[0089] In the general formulas (TEMP-69) to (TEMP-82), Q 1 ~Q 9 are each independently a hydrogen atom or a substituent.

[0090]

Chemical formula

[0091] [Chemistry]

[0092] [Chemistry]

[0093] [Chemistry]

[0094] In the general formulas (TEMP-83) to (TEMP-102) above, Q 1 ~Q 8 are each independently a hydrogen atom or a substituent.

[0095] The above is the description of "substituents described in this specification".

[0096] · "When combining to form a ring" In this specification, the case of "one or more sets of two or more adjacent ones combine with each other to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted condensed ring, or do not combine with each other" means the case of "one or more sets of two or more adjacent ones combine with each other to form a substituted or unsubstituted monocyclic ring", the case of "one or more sets of two or more adjacent ones combine with each other to form a substituted or unsubstituted condensed ring", and the case of "one or more sets of two or more adjacent ones do not combine with each other". Regarding the case in this specification where "one or more sets of two or more adjacent ones combine with each other to form a substituted or unsubstituted monocyclic ring" and the case where "one or more sets of two or more adjacent ones combine with each other to form a substituted or unsubstituted condensed ring" (hereinafter, these cases may be collectively referred to as "the case of combining to form a ring"), the following will be described. Taking the case of an anthracene compound represented by the following general formula (TEMP-103) whose mother skeleton is an anthracene ring as an example.

[0097] [Chemical formula]

[0098] For example, R 921 ~R 930 In the case where "one or more sets of two or more adjacent ones are combined with each other to form a ring", the set of two adjacent ones that forms one set means R 921 and R 922 's set, R 922 and R 923 's set, R 923 and R 924 's set, R 924 and R 930 's set, R 930 and R 925 's set, R 925 and R 926 's set, R 926 and R 927 's set, R 927 and R 928 's set, R 928 and R 929 's set, and R 929 and R 921 's set.

[0099] The above "one or more sets" means that two or more sets of the above sets of two or more adjacent ones may simultaneously form a ring. For example, if R 921 and R 922 are combined with each other to form ring Q A , and at the same time R 925 and R 926 are combined with each other to form ring Q B , then the anthracene compound represented by the general formula (TEMP-103) is represented by the following general formula (TEMP-104).

[0100] [Chemical formula]

[0101] The case where a "group consisting of two or more adjacent members" forms a ring includes not only the case where a "group of two" adjacent as in the above example combines, but also the case where a "group of three or more" adjacent combines. For example, R 921 and R 922 are combined with each other to form a ring Q A and R 922 and R 923 are combined with each other to form a ring Q C and a group consisting of three adjacent members (R 921 , R 922 and R 923 ) combines with each other to form a ring and condenses with the anthracene skeleton. In this case, the anthracene compound represented by the general formula (TEMP-103) is represented by the following general formula (TEMP-105). In the following general formula (TEMP-105), the ring Q A and the ring Q C share R 922 .

[0102]

Chemical formula

[0103] The "monocyclic ring" or "condensed ring" formed may be a saturated ring or an unsaturated ring as the structure of only the formed ring. Even when "one group of a group consisting of two adjacent members" forms a "monocyclic ring" or "condensed ring", the "monocyclic ring" or "condensed ring" can form a saturated ring or an unsaturated ring. For example, the ring Q A and the ring Q B formed in the general formula (TEMP-104) are each a "monocyclic ring" or "condensed ring". Also, the ring Q A and the ring Q C formed in the general formula (TEMP-105) are "condensed rings". The ring Q A and the ring Q C in the general formula (TEMP-105) are a condensed ring formed by the condensation of the ring Q A and the ring Q C . The ring Q A in the general formula (TMEP-104)If it is a benzene ring, ring Q A is a monocyclic ring. Ring Q in the general formula (TMEP-104) A If it is a naphthalene ring, ring Q A is a condensed ring.

[0104] "Unsaturated ring" means an aromatic hydrocarbon ring or an aromatic heterocyclic ring. "Saturated ring" means an aliphatic hydrocarbon ring or a non-aromatic heterocyclic ring. Specific examples of the aromatic hydrocarbon ring include structures in which the groups exemplified as specific examples in specific example group G1 are terminated by hydrogen atoms. Specific examples of the aromatic heterocyclic ring include structures in which the aromatic heterocyclic ring groups exemplified as specific examples in specific example group G2 are terminated by hydrogen atoms. Specific examples of the aliphatic hydrocarbon ring include structures in which the groups exemplified as specific examples in specific example group G6 are terminated by hydrogen atoms. "Forming a ring" means forming a ring with only a plurality of atoms of the mother skeleton or a plurality of atoms of the mother skeleton and one or more arbitrary elements. For example, in the general formula (TEMP-104), R 921 and R 922 are bonded to each other to form ring Q A means a ring formed by a carbon atom of the anthracene skeleton to which R 921 is bonded, a carbon atom of the anthracene skeleton to which R 922 is bonded, and one or more arbitrary elements. Specific examples include when R 921 and R 922 form ring Q A , when R 921 is bonded to a carbon atom of the anthracene skeleton, R 922 is bonded to a carbon atom of the anthracene skeleton, and a monocyclic unsaturated ring is formed by four carbon atoms, the ring formed by R 921 and R 922 is a benzene ring.

[0105] Here, "any element" is preferably at least one element selected from the group consisting of a carbon element, a nitrogen element, an oxygen element, and a sulfur element, unless otherwise described herein. In any element (for example, in the case of a carbon element or a nitrogen element), a bond that does not form a ring may be terminated with a hydrogen atom or the like, or may be substituted with an "optional substituent" described later. When any element other than the carbon element is included, the formed ring is a heterocyclic ring. The "one or more arbitrary elements" constituting a monocyclic or condensed ring are preferably 2 or more and 15 or less, more preferably 3 or more and 12 or less, and still more preferably 3 or more and 5 or less, unless otherwise described herein. Unless otherwise described herein, among the "monocyclic ring" and the "condensed ring", the "monocyclic ring" is preferred. Unless otherwise described herein, among the "saturated ring" and the "unsaturated ring", the "unsaturated ring" is preferred. Unless otherwise described herein, the "monocyclic ring" is preferably a benzene ring. Unless otherwise described herein, the "unsaturated ring" is preferably a benzene ring. When "one or more sets of two or more adjacent ones" "are bonded to each other to form a substituted or unsubstituted monocyclic ring" or "are bonded to each other to form a substituted or unsubstituted condensed ring", unless otherwise described herein, preferably, one or more sets of two or more adjacent ones are bonded to each other to form a substituted or unsubstituted "unsaturated ring" composed of a plurality of atoms of the main skeleton and at least one element selected from the group consisting of 1 to 15 carbon elements, nitrogen elements, oxygen elements, and sulfur elements.

[0106] When the above-mentioned "monocyclic ring" or "condensed ring" has a substituent, the substituent is, for example, the "optional substituent" described later. Specific examples of the substituent when the above-mentioned "monocyclic ring" or "condensed ring" has a substituent are the substituents described in the section of the "substituents described in this specification" mentioned above. When the above-mentioned "saturated ring" or "unsaturated ring" has a substituent, the substituent is, for example, the "arbitrary substituent" described later. Specific examples of the substituent when the above-mentioned "monocyclic ring" or "condensed ring" has a substituent are the substituents described in the section of "substituents described in this specification" mentioned above. The above is the explanation of the case where "one or more of the groups consisting of two or more adjacent ones are bonded to each other to form a substituted or unsubstituted monocyclic ring" and the case where "one or more of the groups consisting of two or more adjacent ones are bonded to each other to form a substituted or unsubstituted condensed ring" (the case of "bonding to form a ring").

[0107] · Substituent in the case of "substituted or unsubstituted" In one embodiment of the present specification, the substituent in the case of the above-mentioned "substituted or unsubstituted" (which may be referred to as "arbitrary substituent" in this specification) is, for example, an unsubstituted alkyl group having 1 to 50 carbon atoms, an unsubstituted alkenyl group having 2 to 50 carbon atoms, an unsubstituted alkynyl group having 2 to 50 carbon atoms, an unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 ), -O-(R 904 ), -S-(R 905 ), -N(R 906 )(R 907 ), a halogen atom, a cyano group, a nitro group, an unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, and an unsubstituted heterocyclic group having 5 to 50 ring-forming atoms and groups selected from the group consisting of, etc., Here, R 901 ~R 907 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, A cycloalkyl group having 3 to 50 ring-forming carbon atoms, which may be substituted or unsubstituted, An aryl group having 6 to 50 ring-forming carbon atoms, which may be substituted or unsubstituted, or A heterocyclic group having 5 to 50 ring-forming atoms, which may be substituted or unsubstituted. R 901 When two or more Rs 901 are present, the two or more Rs R 902 When two or more Rs 902 are present, the two or more Rs R 903 When two or more Rs 903 are present, the two or more Rs R 904 When two or more Rs 904 are present, the two or more Rs R 905 When two or more Rs 905 are present, the two or more Rs R 906 When two or more Rs 906 are present, the two or more Rs R 907 When two or more Rs 907 are the same as or different from each other.

[0108] In one embodiment, the substituent in the case of the "substituted or unsubstituted" is An alkyl group having 1 to 50 carbon atoms, An aryl group having 6 to 50 ring-forming carbon atoms, and A heterocyclic group having 5 to 50 ring-forming atoms selected from the group consisting of.

[0109] In one embodiment, the substituent in the case of the "substituted or unsubstituted" is An alkyl group having 1 to 18 carbon atoms, An aryl group having 6 to 18 ring-forming carbon atoms, and A heterocyclic group having 5 to 18 ring-forming atoms a group selected from the group consisting of

[0110] Specific examples of each group of the above-mentioned optional substituents are the specific examples of the substituents described in the section of "Substituents Described in the Present Specification" described above.

[0111] Unless otherwise specified in the present specification, any adjacent substituents may form a "saturated ring" or an "unsaturated ring", preferably a substituted or unsubstituted saturated 5-membered ring, a substituted or unsubstituted saturated 6-membered ring, a substituted or unsubstituted unsaturated 5-membered ring, or a substituted or unsubstituted unsaturated 6-membered ring, and more preferably a benzene ring. Unless otherwise specified in the present specification, any substituent may further have a substituent. The substituents further possessed by any substituent are the same as the above-mentioned any substituent.

[0112] In the present specification, the numerical range represented by "AA to BB" means a range including the numerical value AA described before "AA to BB" as the lower limit value and the numerical value BB described after "AA to BB" as the upper limit value.

[0113] In the present specification, the mathematical formula represented by "A≧B" means that the value of A is equal to or greater than the value of B. In the present specification, the mathematical formula represented by "A≦B" means that the value of A is equal to or less than the value of B.

[0114] 〔First Embodiment〕 (Composition) The composition according to the present embodiment contains a first compound and a second compound, the first compound and the second compound are different compounds from each other, and the first compound and the second compound are each independently an amine compound having a refractive index of 1.80 or less.

[0115] The refractive index of the amine compound is usually around 1.95. A low refractive index amine compound with a refractive index of 1.80 or less has a large bias in hole injection property because the hole injection property is too high or too low. Therefore, when a low refractive index amine compound is used, for example, in a hole transport layer, the bias in hole injection property from the hole transport layer to the electron barrier layer or the light emitting layer becomes large, and the device performance also tends to be biased. In the composition according to the present embodiment, the first compound and the second compound having a refractive index of 1.80 or less can be mixed so as to complement each other in performance (for example, so that the balance of hole injection property is achieved). By using the composition according to the present embodiment for the organic layer of the organic EL device, the organic layer has a lower refractive index and the light extraction efficiency is improved, and the carrier balance of the organic layer is optimally maintained and the light emission efficiency of the organic EL device is improved.

[0116] The refractive index can be measured by the measurement method described in the examples below. In this specification, the refractive index value at 2.7 eV in the substrate parallel direction (Ordinary direction) of the value measured by multi-angle spectroscopic ellipsometry measurement is defined as the refractive index of the measurement target material. The refractive index at 2.7 eV corresponds to the refractive index at 460 nm.

[0117] In one aspect of the composition according to the present embodiment, at least one of the first compound and the second compound is an amine compound having a refractive index of 1.78 or less.

[0118] In one aspect of the composition according to the present embodiment, the refractive index of one of the first compound and the second compound is 1.80 or less, and the refractive index of the other of the first compound and the second compound is 1.78 or less.

[0119] In one aspect of the composition according to the present embodiment, the refractive index n of the first compound 1 and the refractive index n of the second compound 2 are 1.78 or less.

[0120] In one aspect of the composition according to the present embodiment, the refractive index n of the first compound 1 and the refractive index n of the second compound2 The absolute value of the difference |n 1 -n 2 | is 0.05 or less.

[0121] In one aspect of the composition according to this embodiment, the refractive index n of the first compound 1 and the refractive index n of the second compound 2 The absolute value of the difference |n 1 -n 2 | is 0.03 or less.

[0122] In the composition according to this embodiment, the molecular structures of the first compound and the second compound are not particularly limited as long as they satisfy the above refractive index range. For example, the following compounds can also be used as the first compound and the second compound.

[0123] In one aspect of the composition according to this embodiment, the first compound and the second compound are each independently a compound represented by the following general formula (C1) or a compound represented by the following general formula (C3).

[0124]

Chemical formula

[0125] (In the general formula (C1), L A1 、L A2 and L A3 are each independently a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms, Ar 111 、Ar 112 and Ar 113 are each independently a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, or -Si(R C1 )(R C2)(R C3 ) is, R C1 , R C2 and R C3 are each independently a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, R C1 When there are a plurality of R C1 , the plurality of R R C2 When there are a plurality of R C2 , the plurality of R R C3 When there are a plurality of R C3 are the same as or different from each other.)

[0126]

Chemical formula

[0127] (In the general formula (C3), L C1 , L C2 , L C3 and L C4 are each independently a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a divalent heterocyclic group having 5 to 50 ring-forming atoms which may be substituted or unsubstituted, n2 is 1, 2, 3 or 4, When n2 is 1, L C5 is a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a divalent heterocyclic group having 5 to 50 ring-forming atoms which may be substituted or unsubstituted, When n2 is 2, 3 or 4, the plurality of L C5 are the same as or different from each other, When n2 is 2, 3 or 4, the plurality of L C5 are bonded to each other to form a substituted or unsubstituted monocyclic ring, or Combine with each other to form a substituted or unsubstituted condensed ring, or Do not combine with each other, L does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring C5 is a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a divalent heterocyclic group having 5 to 50 ring-forming atoms which is substituted or unsubstituted, Ar 131 、Ar 132 、Ar 133 and Ar 134 are each independently a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, or -Si(R C1 )(R C2 )(R C3 ), R C1 、R C2 and R C3 are each independently a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, R C1 When there are a plurality of R C1 the plurality of R R C2 When there are a plurality of R C2 the plurality of R R C3 When there are a plurality of R C3 the plurality of R

[0128] In one aspect of the composition according to the present embodiment, in the compound represented by the general formula (C3), the first amino group represented by the following general formula (C3-1) and the second amino group represented by the following general formula (C3-2) are the same group.

[0129]

Chemical formula

[0130] (In the general formulas (C3-1) and (C3-2), * represents the bonding position with L C5 respectively.)

[0131] In one aspect of the composition according to the present embodiment, the first amino group represented by the general formula (C3-1) and the second amino group represented by the general formula (C3-2) may be different groups from each other.

[0132] In one aspect of the composition according to the present embodiment, the first compound and the second compound are each independently a compound represented by the general formula (C1).

[0133] In one aspect of the composition according to the present embodiment, at least one of the aryl group and the heterocyclic group of the compound represented by the general formula (C1) and the compound represented by the general formula (C3) is substituted with a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms. The number of carbon atoms of the alkyl group is preferably 1 to 30, more preferably 1 to 20, and even more preferably 1 to 6.

[0134] In one aspect of the composition according to the present embodiment, two or more of the aryl group and the heterocyclic group of the compound represented by the general formula (C1) and the compound represented by the general formula (C3) are substituted with a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms. The number of carbon atoms of the alkyl group is preferably 1 to 20, and more preferably 1 to 6.

[0135] In one aspect of the composition according to the present embodiment, Ar 111 of the compound represented by the general formula (C1), Ar 112 and Ar 113 are one or more groups represented by the following general formula (C4), or Ar 131 of the compound represented by the general formula (C3), Ar 132 Ar 133 and Ar 134 are one or more groups represented by the following general formula (C4).

[0136] [Chemical formula]

[0137] (In the general formula (C4), R 311 ~R 318 One of them is a single bond connecting to *e, R that is not a single bond connecting to *e 311 ~R 318 A group consisting of two or more adjacent ones among them, Combine with each other to form a substituted or unsubstituted benzene ring, or Do not combine with each other, Not a single bond connecting to *e and not forming the substituted or unsubstituted benzene ring, and R 311 ~R 318 Are each independently, A hydrogen atom, A substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, A substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or A substituted or unsubstituted heterocyclic group having 5 to 30 ring-forming atoms, R 319 And R 320 The group consisting of them, Combine with each other to form a substituted or unsubstituted monocyclic ring, Combine with each other to form a substituted or unsubstituted condensed ring, or Do not combine with each other, Do not form the substituted or unsubstituted monocyclic ring and do not form the substituted or unsubstituted condensed ring, and R 319 And R 320 Are each independently, A hydrogen atom, A substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, or A substituted or unsubstituted aryl group having 6 to 12 ring-forming carbon atoms, ** is L A1 L A2 L A3 L C1 L C2 LC3 or L C4 represents the bonding position with.)

[0138] In one aspect of the composition according to this embodiment, Ar of the compound represented by the general formula (C1) 111 , Ar 112 and Ar 113 Two or more of are groups represented by the general formula (C4), or Ar of the compound represented by the general formula (C3) 131 , Ar 132 , Ar 133 and Ar 134 Two or more of are groups represented by the general formula (C4).

[0139] In one aspect of the composition according to this embodiment, R in the general formula (C4) 319 and R 320 are each independently a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms. The number of carbon atoms of the alkyl group is preferably 1 to 20, more preferably 1 to 6.

[0140] In one aspect of the composition according to this embodiment, at least one of R in the general formula (C4) 319 and R 320 is a substituted or unsubstituted aryl group having 6 to 12 ring-forming carbon atoms.

[0141] In one aspect of the composition according to this embodiment, at least one of R in the general formula (C4) 319 and R 320 is a phenyl group substituted with a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms. The number of carbon atoms of the alkyl group is preferably 1 to 20, more preferably 1 to 6.

[0142] In one aspect of the composition according to this embodiment, R in the general formula (C4) 319 and R 320 are substituted or unsubstituted phenyl groups. In one aspect of the composition according to this embodiment, R in the general formula (C4) 319 and R 320is a phenyl group substituted with a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms. The number of carbon atoms of the alkyl group is preferably 1 to 20, more preferably 1 to 6.

[0143] In one aspect of the composition according to this embodiment, R in the general formula (C4) 319 and R 320 form a pair that combines with each other to form a substituted or unsubstituted monocyclic ring, or combines with each other to form a substituted or unsubstituted condensed ring.

[0144] In one aspect of the composition according to this embodiment, R in the general formula (C4) 319 and R 320 form a pair that combines with each other to form a substituted monocyclic ring (a monocyclic ring having a substituent), or combines with each other to form a substituted condensed ring (a condensed ring having a substituent).

[0145] In one aspect of the composition according to this embodiment, R in the general formula (C4) 319 and R 320 form a pair that combines with each other to form a monocyclic ring substituted with a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, or combines with each other to form a condensed ring substituted with a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms. The number of carbon atoms of the alkyl group is preferably 1 to 20, more preferably 1 to 6.

[0146] In one aspect of the composition according to this embodiment, the group represented by the general formula (C4) is represented by the following general formula (C41).

[0147]

Chemical formula

[0148] (In the general formula (C41), R 311 ~R 318 one of them is a single bond that binds to *e, R that is not a single bond that binds to *e 311 ~R318 Among them, a group consisting of two or more adjacent ones are bonded to each other to form a substituted or unsubstituted benzene ring, or do not bond to each other, is not a single bond bonding to *e and does not form the substituted or unsubstituted benzene ring, and R 311 ~R 318 are each independently as defined in the general formula (C4), R 341 ~R 348 are a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 30 ring-forming atoms, ** represents the bonding position with L A1 、L A2 、L A3 、L C1 、L C2 、L C3 or L C4 ).

[0149] In one aspect of the composition according to the present embodiment, at least one of R 341 ~R 344 is a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, and at least one of R 345 ~R 348 is a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms. The number of carbon atoms of the alkyl group is preferably 1 to 20, more preferably 1 to 6.

[0150] In one aspect of the composition according to the present embodiment, the group consisting of R 319 and R 320 in the general formula (C4) does not bond to each other.

[0151] In one aspect of the composition according to the present embodiment, R 311 ~R 318At least one of them is a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms.

[0152] In one aspect of the composition according to the present embodiment, R in the general formula (C4) 313 ~R 316 One of them is a single bond bonded to *e.

[0153] In one aspect of the composition according to the present embodiment, Ar of the compound represented by the general formula (C1) 111 Ar 112 And Ar 113 And Ar of the compound represented by the general formula (C3) 131 Ar 132 Ar 133 And Ar 134 Are each independently a group represented by the following general formula (2-a), (2-b), (2-c), (2-d), (2-e) or (2-f).

[0154]

Chemical formula

[0155] (In the general formula (2-a), R 251 ~R 255 Any set consisting of two or more adjacent ones of them are not bonded to each other, R 251 ~R 255 Are each independently A hydrogen atom, A substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, or A substituted or unsubstituted cycloalkyl group having 3 to 30 ring-forming atoms, ** Represents the bonding position.)

[0156]

Chemical formula

[0157] (In the general formula (2-b), R 261 ~R268 One of them is a single bond connecting to *b, R that is not a single bond connecting to *b 261 ~R 268 Among the groups consisting of two or more adjacent ones, none of them are bonded to each other, R that is not a single bond connecting to *b 261 ~R 268 each independently, a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 30 ring-forming atoms, or a substituted or unsubstituted aryl group having 6 to 12 ring-forming carbon atoms, ** represents the bonding position.)

[0158]

Chemical formula

[0159] (In the general formula (2-c), R 271 ~R 282 One of them is a single bond connecting to *c, R that is not a single bond connecting to *c 271 ~R 282 Among the groups consisting of two or more adjacent ones, none of them are bonded to each other, R that is not a single bond connecting to *c 271 ~R 282 each independently, a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 30 ring-forming atoms, or a substituted or unsubstituted aryl group having 6 to 12 ring-forming carbon atoms, ** represents the bonding position.)

[0160]

Chemical formula

[0161] (In the general formula (2-d), R 291 ~R 300 one of them is a single bond connecting to *d, R that is not a single bond connecting to *d 291 ~R 300 any group consisting of two or more adjacent ones among them do not bond to each other, R that is not a single bond connecting to *d 291 ~R 300 each independently is a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 30 ring-forming atoms, or a substituted or unsubstituted aryl group having 6 to 12 ring-forming carbon atoms, ** represents the bonding position.)

[0162] [Chemical formula]

[0163] (In the general formula (2-e), Z 3 is an oxygen atom, a sulfur atom, NR 319 or C(R 320 )(R 321 ), R 311 ~R 321 one of them is a single bond connecting to *e, or a group consisting of two or more adjacent ones among R 311 ~R 318 forms a substituted or unsubstituted benzene ring by bonding to each other, and any carbon atom of the benzene ring bonds to *e by a single bond, R that is not a single bond connecting to *e 311 ~R 318 any group consisting of two or more adjacent ones among them bonds to each other to form a substituted or unsubstituted benzene ring, or does not bond to each other, R, which is not a single bond connecting to *e and does not form the substituted or unsubstituted benzene ring 311 ~R 318 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 30 ring-forming atoms, a substituted or unsubstituted aryl group having 6 to 12 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 10 ring-forming atoms, R, which is not a single bond connecting to *e 319 is a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 12 ring-forming carbon atoms, R, which is not a single bond connecting to *e 320 and R 321 the group consisting of are bonded to each other to form a substituted or unsubstituted monocyclic ring, are bonded to each other to form a substituted or unsubstituted condensed ring, or do not bond to each other, R, which is not a single bond connecting to *e and does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring 320 and R 321 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 12 ring-forming carbon atoms, ** represents the bonding position.)

[0164]

Chemical formula

[0165] (In the general formula (2-f), R 341 ~R 345One of them is a single bond that binds to *h1, and R 341 ~R 345 The other one of them is a single bond that binds to *h2, and R that is not a single bond binding to *h1 and not a single bond binding to *h2 341 ~R 345 Among the groups consisting of two or more adjacent ones of them, none of them are bonded to each other, R 351 ~R 355 One or more of the groups consisting of two or more adjacent ones of them Are bonded to each other to form a substituted or unsubstituted monocyclic ring, or Are bonded to each other to form a substituted or unsubstituted condensed ring, or Do not bond to each other, R 361 ~R 365 One or more of the groups consisting of two or more adjacent ones of them Are bonded to each other to form a substituted or unsubstituted monocyclic ring, or Are bonded to each other to form a substituted or unsubstituted condensed ring, or Do not bond to each other, R that is not a single bond binding to *h1 and not a single bond binding to *h2 341 ~R 345 , and R that does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring 351 ~R 355 And R 361 ~R 365 Are each independently A hydrogen atom, A substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, A substituted or unsubstituted cycloalkyl group having 3 to 30 ring-forming atoms, or A substituted or unsubstituted aryl group having 6 to 12 ring-forming carbon atoms, ** represents the bonding position.)

[0166] ** in the general formulas (2-a), (2-b), (2-c), (2-d), (2-e) or (2-f) are each independently L A1 , L A2, L A3 , L C1 , L C2 , L C3 or L C4 is the bonding position with, or is the bonding position with the nitrogen atom of the amino group.

[0167] In one aspect of the composition according to this embodiment, L A1 , L A2 , L A3 , L C1 , L C2 , L C3 and L C4 are each independently a single bond, a substituted or unsubstituted o-phenylene group, or a substituted or unsubstituted m-phenylene group.

[0168] In one aspect of the composition according to this embodiment, the first compound and the second compound are each independently a monoamine compound having one substituted or unsubstituted amino group in the molecule, or a diamine compound having two substituted or unsubstituted amino groups in the molecule.

[0169] In one aspect of the organic EL element according to this embodiment, the first compound and the second compound are each independently a monoamine compound.

[0170] In the monoamine compound and the diamine compound, the nitrogen atom of the amino group is not a ring-forming atom. When the nitrogen atom is a ring-forming atom such as a carbazole ring and an azine ring, the nitrogen atom is not the nitrogen atom as an amino group. For example, the following compound HT-X contains two nitrogen atoms in the molecule, but one nitrogen atom in HT-X is a ring-forming atom of the carbazole ring, and the other nitrogen atom is not a ring-forming atom and is the nitrogen atom as an amino group. The following compound HT-X is a compound having a structure in which a 9-phenyl-3-carbazolyl group is bonded to the nitrogen atom of the amino group via a linking group, and is a monoamine compound. The following compound HT-Y also has a structure in which a 9-carbazolyl group is bonded to the nitrogen atom of the amino group via a linking group, and is a monoamine compound.

[0171] [Chemical]

[0172] (Ratio of the compound in the composition) In one aspect of the composition according to this embodiment, the ratio (mass ratio) of the first compound and the second compound in the composition is 1:99 to 99:1, 10:90 to 90:10, 30:70 to 70:30, 40:60 to 60:40, or 45:55 to 55:45.

[0173] In one aspect of the composition according to this embodiment, the mass M of the first compound in the composition C1 and the mass M of the second compound C2 of the total M C1 +M C2 The mass percentage of the mass M of the first compound with respect to C1 is 1% by mass or more and 99% by mass or less.

[0174] In one aspect of the composition according to this embodiment, the total M C1 +M C2 The mass percentage of the mass M of the second compound with respect to C2 is 10% by mass or more, 30% by mass or more, 40% by mass or more, or 45% by mass or more. In one aspect of the composition according to this embodiment, the total M C1 +M C2 The mass percentage of the mass M of the first compound with respect to C1 is 90% by mass or less, 70% by mass or less, 60% by mass or less, or 55% by mass or less.

[0175] In one aspect of the composition according to this embodiment, the form of the composition is a mixed powder.

[0176] In one aspect of the composition according to this embodiment, the form of the composition is not a film or a layer.

[0177] In one aspect of the composition according to the present embodiment, like the second embodiment described later, the form of the composition may be a film or a layer.

[0178] (Method for producing the first compound and the second compound) The first compound and the second compound contained in the composition according to the present embodiment can be produced by known methods, or can be produced by following the methods and using known alternative reactions and raw materials adapted to the target products.

[0179] (Specific examples of the first compound and the second compound) Specific examples of the first compound and the second compound according to the present embodiment include, for example, the following compounds. However, the present invention is not limited to these specific examples.

[0180] [Chemical formula]

[0181] [Chemical formula]

[0182] [Chemical formula]

[0183] [Chemical formula]

[0184] [Chemical formula]

[0185] [Chemical formula]

[0186] [Chemical formula]

[0187]

Chem.

[0188]

Chem.

[0189]

Chem.

[0190]

Chem.

[0191]

Chem.

[0192]

Chem.

[0193]

Chem.

[0194] 〔Second Embodiment〕 <Organic Electroluminescence Element> The organic electroluminescence device according to this embodiment includes an anode, a cathode, and an organic layer disposed between the anode and the cathode, and at least one layer included in the organic layer contains the composition according to the first embodiment. That is, in the organic EL device according to this embodiment, at least one layer included in the organic layer contains the first compound and the second compound according to the first embodiment. Also in this embodiment, the first compound and the second compound are different compounds from each other, and the first compound and the second compound are each independently an amine compound having a refractive index of 1.80 or less.

[0195] In one aspect of the organic EL device according to this embodiment, the composition according to the first embodiment exists as a film or layer in the organic layer.

[0196] The organic layer of the organic EL device according to this embodiment preferably includes a plurality of layers, and preferably at least one of these plurality of layers contains the composition according to the first embodiment.

[0197] In one aspect of the organic EL device according to this embodiment, the first compound and the second compound are contained in the same layer.

[0198] In one aspect of the organic EL device according to this embodiment, the organic layer includes a light-emitting band and a hole-transporting band. The light-emitting band includes at least one light-emitting layer, the hole-transporting band is disposed between the anode and the light-emitting band, and at least one layer included in the hole-transporting band contains the first compound and the second compound.

[0199] <Hole-transporting band> In this specification, a region composed of one or more layers disposed between the anode and the light-emitting band is referred to as a hole-transporting band.

[0200] In one aspect of the organic EL device according to this embodiment, the hole-transporting band includes a hole injection layer and a hole transport layer.

[0201] (Hole transport layer) In one aspect of the organic EL element according to this embodiment, the hole transport layer contains a first compound and a second compound.

[0202] In one aspect of the organic EL element according to this embodiment, the refractive index of the hole injection layer is greater than the refractive index of the hole transport layer.

[0203] In one aspect of the organic EL element according to this embodiment, the hole transport layer includes a first hole transport layer, and the first hole transport layer is disposed between the hole injection layer and the light-emitting band.

[0204] In one aspect of the organic EL element according to this embodiment, the first hole transport layer contains a first compound and a second compound. In this aspect, the refractive index n HA of the hole injection layer is preferably greater than the refractive index n HT1 of the first hole transport layer.

[0205] In one aspect of the organic EL element according to this embodiment, the hole transport layer includes a first hole transport layer and a second hole transport layer, and the second hole transport layer is disposed between the first hole transport layer and the light-emitting band. In one aspect of the organic EL element according to this embodiment, the first hole transport layer and the second hole transport layer are in direct contact.

[0206] In one aspect of the organic EL element according to this embodiment, the refractive index n HT1 of the first hole transport layer is greater than the refractive index n HT2 of the second hole transport layer.

[0207] When a layer contains a plurality of types of compounds, the refractive index of the layer corresponds to the refractive index of a mixture (composition) containing the plurality of types of compounds.

[0208] In one aspect of the organic EL element according to this embodiment, the film thickness of the second hole transport layer is 20 nm or more. In one aspect of the organic EL element according to this embodiment, the film thickness of the second hole transport layer is 30 nm or more, or 35 nm or more.

[0209] In one aspect of the organic EL element according to the present embodiment, the film thickness of the layer containing the first compound and the second compound is 20 nm or more, 30 nm or more, or 35 nm or more.

[0210] In one aspect of the organic EL element according to the present embodiment, the second hole transport layer contains the first compound and the second compound. In one aspect of the organic EL element according to the present embodiment, the second hole transport layer contains the first compound and the second compound, and the first hole transport layer does not contain the first compound and the second compound. In this aspect, the refractive index n HT1 of the first hole transport layer is preferably larger than the refractive index n HT2 of the second hole transport layer.

[0211] In one aspect of the organic EL element according to the present embodiment, the first hole transport layer contains the first compound and the second compound, and the second hole transport layer does not contain the first compound and the second compound. In this aspect, the refractive index n HA of the hole injection layer and the refractive index n HT2 of the second hole transport layer are preferably larger than the refractive index n HT1 of the first hole transport layer.

[0212] In one aspect of the organic EL element according to the present embodiment, the hole transport layer further includes a third hole transport layer, the third hole transport layer is disposed between the hole injection layer and the first hole transport layer, and from the anode side, the hole injection layer, the third hole transport layer, the first hole transport layer, and the second hole transport layer are arranged in this order. In one aspect of the organic EL element according to the present embodiment, the first hole transport layer and the third hole transport layer are in direct contact with each other.

[0213] In one aspect of the organic EL element according to the present embodiment, the refractive index n HT1 of the first hole transport layer is preferably larger than the refractive index of the third hole transport layer n HT3 .

[0214] In one aspect of the organic EL element according to this embodiment, the refractive index n of the first hole transport layer HT1 is larger than the refractive index n of the second hole transport layer HT2 and is preferably larger than the refractive index of the third hole transport layer n HT3 .

[0215] In one aspect of the organic EL element according to this embodiment, the ratio of the total film thickness of the hole injection layer and the third hole transport layer to the film thickness of the second hole transport layer is 1:1.5 to 1.5:1.

[0216] In one aspect of the organic EL element according to this embodiment, the ratio of the total film thickness of the hole injection layer and the third hole transport layer to the film thickness of the first hole transport layer and the film thickness of the second hole transport layer is 1:1.5:1 to 1:2.5:1.

[0217] In one aspect of the organic EL element according to this embodiment, the hole transport layer further includes a fourth hole transport layer, the fourth hole transport layer is disposed between the second hole transport layer and the light emission band, and from the anode side, the first hole transport layer, the second hole transport layer, and the fourth hole transport layer are arranged in this order. In one aspect of the organic EL element according to this embodiment, the second hole transport layer and the fourth hole transport layer are in direct contact. In one aspect of the organic EL element according to this embodiment, the fourth hole transport layer and the light emission band are in direct contact. In one aspect of the organic EL element according to this embodiment, when the hole transport layer includes the first, second, third, and fourth hole transport layers, from the anode side, the hole injection layer, the third hole transport layer, the first hole transport layer, the second hole transport layer, and the fourth hole transport layer are arranged in this order.

[0218] In one aspect of the organic EL element according to this embodiment, the first hole transport layer, the second hole transport layer, the third hole transport layer, and the fourth hole transport layer are single layers.

[0219] In one aspect of the organic EL element according to this embodiment, the refractive index n of the fourth hole transport layer HT4 is the refractive index n of the first hole transport layer HT1and the refractive index n of the second hole transport layer HT2 is larger.

[0220] In one aspect of the organic EL element according to the present embodiment, the fourth hole transport layer is an electron barrier layer. The electron barrier layer is preferably a layer that transports holes and blocks electrons from reaching a layer on the anode side of the electron barrier layer (for example, a hole transport layer). In one aspect of the organic EL element according to the present embodiment, the fourth hole transport layer may be a layer that prevents excitons generated in the light emitting layer from moving to a layer on the anode side of the fourth hole transport layer (for example, a hole transport layer and a hole injection layer, etc.) so that the excitation energy does not leak from the light emitting layer to the surrounding layer.

[0221] In one aspect of the organic EL element according to the present embodiment, the hole transport band includes a first mixed layer between the first hole transport layer and the second hole transport layer. The first mixed layer contains a first hole transport band material and a second hole transport band material, which will be described later. In one aspect of the organic EL element according to the present embodiment, the film thickness of the first mixed layer may be 10 nm or more. In one aspect of the organic EL element according to the present embodiment, the film thickness of the first mixed layer is 50 nm or less. In one aspect of the organic EL element according to the present embodiment, the film thickness of the first mixed layer is thinner than the film thickness of the first hole transport layer and thinner than the film thickness of the second hole transport layer. In one aspect of the organic EL element according to the present embodiment, when the first hole transport layer and the second hole transport layer are continuously formed in the same film formation chamber, a first mixed layer may be formed between the first hole transport layer and the second hole transport layer.

[0222] In one aspect of the organic EL element according to the present embodiment, the hole transport band includes a second mixed layer between the first hole transport layer and the third hole transport layer. The second mixed layer contains a first hole transport band material and a third hole transport band material, which will be described later. In one aspect of the organic EL element according to the present embodiment, the film thickness of the second mixed layer may be 10 nm or more. In one aspect of the organic EL element according to the present embodiment, the film thickness of the second mixed layer is 50 nm or less. In one aspect of the organic EL element according to the present embodiment, the film thickness of the second mixed layer is thinner than the film thickness of the first hole transport layer and thinner than the film thickness of the third hole transport layer. In one aspect of the organic EL element according to the present embodiment, when the first hole transport layer and the third hole transport layer are continuously formed in the same film formation chamber, a second mixed layer may be formed between the first hole transport layer and the third hole transport layer.

[0223] (Hole transport band material) In one aspect of the organic EL element according to the present embodiment, the first hole transport layer contains a first hole transport band material, the second hole transport layer contains a second hole transport band material, the third hole transport layer contains a third hole transport band material, and the fourth hole transport layer contains a fourth hole transport band material.

[0224] The first hole transport band material is a constituent material contained in the first hole transport layer and may be composed of one compound or two or more compounds. The second hole transport band material is a constituent material contained in the second hole transport layer and may be composed of one compound or two or more compounds. The third hole transport band material is a constituent material contained in the third hole transport layer and may be composed of one compound or two or more compounds. The fourth hole transport band material is a constituent material contained in the fourth hole transport layer and may be composed of one compound or two or more compounds.

[0225] In one aspect of the organic EL element according to the present embodiment, it is preferable that the second hole transport layer and the third hole transport layer contain at least one same compound. As an aspect satisfying this condition, for example, when compound AA and compound AB are different compounds from each other, the second hole transport layer contains a composition composed of two kinds of compound AA and compound AB, and the third hole transport layer contains one kind of compound AA. In the case of this aspect, regarding compound AA, since the second hole transport layer and the third hole transport layer contain the same material, this condition is satisfied. The case where both the second hole transport layer and the third hole transport layer contain only compound AA also satisfies this condition. Further, the case where the second hole transport layer contains a composition composed of two kinds of compound AA and compound AB, and the third hole transport layer also contains a composition composed of two kinds of compound AA and compound AB also satisfies this condition. In one aspect of the organic EL element according to the present embodiment, it is preferable that the second hole transport band material and the third hole transport band material are the same.

[0226] In one aspect of the organic EL element according to the present embodiment, the compounds contained in the second hole transport layer and the third hole transport layer are all different from the compounds contained in the first hole transport layer. As an aspect satisfying this condition, for example, when compound CA, compound CB, compound AA, and compound AB are different compounds from each other, the first hole transport layer contains one kind of compound AA, and the second hole transport layer contains a composition composed of two kinds of compound CA and compound CB. Further, for example, the case where the first hole transport layer contains a composition composed of two kinds of compound AA and compound AB, and the second hole transport layer contains a composition composed of two kinds of compound CA and compound CB is also an aspect satisfying this condition. On the other hand, for example, when the first hole transport layer contains one kind of compound AA, and the second hole transport layer contains a composition composed of two kinds of compound CA and compound AA, regarding compound AA, since the first hole transport layer and the second hole transport layer contain the same compound, this condition is not satisfied. The compounds contained in the first hole transport layer and the third hole transport layer are also the same as the examples of the first hole transport layer and the second hole transport layer.

[0227] In one aspect of the organic EL element according to the present embodiment, it is also preferable that the hole transport band material is at least one compound independently selected from the group consisting of the compound represented by the general formula (C1) and the compound represented by the general formula (C3).

[0228] In one aspect of the organic EL element according to the present embodiment, it is also preferable that the hole transport band material is at least one compound independently selected from the group consisting of the compound represented by the following general formula (cHT3-1), the compound represented by the general formula (cHT3-2), the compound represented by the general formula (cHT3-3), and the compound represented by the general formula (cHT3-4).

[0229] [Chemical formula]

[0230] [Chemical formula]

[0231] [Chemical formula]

[0232] [Chemical formula]

[0233] (In the general formula (cHT3-1), the general formula (cHT3-2), the general formula (cHT3-3), and the general formula (cHT3-4), Ar 311 is a group represented by any one of the following general formula (1-a), general formula (1-b), general formula (1-c), and general formula (1-d), Ar 312 and Ar 313 are each independently a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, or -Si(R C1 )(R C2 )(R C3 ), where R C1 , R C2 and R C3 are each independently a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, R C1 When there are a plurality of R C1 , the plurality of R R C2 When there are a plurality of R C2 , the plurality of R R C3 When there are a plurality of R C3 , the plurality of R L D1 , L D2 and L D3 are each independently a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms, R D20 ~R D24 One or more sets of two or more adjacent ones among are bonded to each other to form a substituted or unsubstituted monocyclic ring, are bonded to each other to form a substituted or unsubstituted condensed ring, or are not bonded to each other, R D31 ~R D38 One or more sets of two or more adjacent ones among are bonded to each other to form a substituted or unsubstituted monocyclic ring, are bonded to each other to form a substituted or unsubstituted condensed ring, or are not bonded to each other, R D40 ~R D44 One or more sets of two or more adjacent ones among Combine with each other to form a substituted or unsubstituted monocyclic ring, or Combine with each other to form a substituted or unsubstituted condensed ring, or Do not combine with each other, X 3 is an oxygen atom, a sulfur atom or C(R D45 )(R D46 ), R D45 and R D46 in the group consisting of Combine with each other to form a substituted or unsubstituted monocyclic ring, or Combine with each other to form a substituted or unsubstituted condensed ring, or Do not combine with each other, R D25 which does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring, R D20 ~R D24 、R D31 ~R D38 、R D40 ~R D44 、R D45 as well as R D46 are each independently a hydrogen atom, a cyano group, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted halogenated alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, a group represented by -Si(R 901 )(R 902 )(R 903 ), a group represented by -O-(R 904 ), a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, a plurality of R D20 are the same as or different from each other, a plurality of R D40 are the same as or different from each other, In the compounds represented by the general formula (cHT3-1), general formula (cHT3-2), general formula (cHT3-3), and general formula (cHT3-4), R 901 ~R 904 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, R 901 When there are a plurality of them, the plurality of R 901 are the same as or different from each other, R 902 When there are a plurality of them, the plurality of R 902 are the same as or different from each other, R 903 When there are a plurality of them, the plurality of R 903 are the same as or different from each other, R 904 When there are a plurality of them, the plurality of R 904 are the same as or different from each other.)

[0234]

Chemical formula

[0235] (In the general formula (1-a), R 51 ~R 55 Any combination consisting of two or more adjacent ones among them does not bond to each other, R 51 ~R 55 are each independently a hydrogen atom, or a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, ** represents the bonding position with L D1 .)

[0236]

Chemical formula

[0237] (In the general formula (1-b), R 61 ~R 68 One of them is a single bond connecting to *b, R that is not a single bond connecting to *b 61 ~R 68 Among the groups consisting of two or more adjacent ones, none of them are bonded to each other, R that is not a single bond connecting to *b 61 ~R 68 Each is independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 12 ring-forming carbon atoms, ** represents the bonding position with L D1 .)

[0238]

Chemical formula

[0239] (In the general formula (1-c), R 71 ~R 80 One of them is a single bond connecting to *d, R that is not a single bond connecting to *d 71 ~R 80 Among the groups consisting of two or more adjacent ones, none of them are bonded to each other, R that is not a single bond connecting to *d 71 ~R 80 Each is independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 12 ring-forming carbon atoms, ** represents the bonding position with L D1 .)

[0240]

Chemical formula

[0241] (In the general formula (1-d), R 141 ~R 145 one of them is a single bond that binds to *h1, and R 141 ~R 145 the other one of them is a single bond that binds to *h2, R that is not a single bond binding to *h1 and not a single bond binding to *h2 141 ~R 145 any group consisting of two or more adjacent ones among them do not bond to each other, R 151 ~R 155 one or more groups consisting of two or more adjacent ones among them bond to each other to form a substituted or unsubstituted monocyclic ring, bond to each other to form a substituted or unsubstituted condensed ring, or do not bond to each other, R 161 ~R 165 one or more groups consisting of two or more adjacent ones among them bond to each other to form a substituted or unsubstituted monocyclic ring, bond to each other to form a substituted or unsubstituted condensed ring, or do not bond to each other, R that is not a single bond binding to *h1 and not a single bond binding to *h2 141 ~R 145 , and R that do not form the substituted or unsubstituted monocyclic ring and do not form the substituted or unsubstituted condensed ring 151 ~R 155 and R 161 ~R 165 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 12 ring-forming carbon atoms, ** represents the bonding position with L D1 ).)

[0242] The compound represented by the general formula (cHT3-1) may be a compound represented by the general formula (cHT3-11).

[0243]

Chemical formula

[0244] (In the general formula (cHT3-11), Ar 312 , Ar 313 , L D1 , L D2 , L D3 and R D25 are, respectively, the same as Ar 312 , Ar 313 , L D1 , L D2 , L D3 and R D25 in the general formula (cHT3-1), One of R D26 ~R D29 is a single bond that binds to L D1 , *k represents the bonding position, R D21 ~R D24 and the R D1 that are not single bonds binding to L D26 ~R D29 Among them, one or more sets of two or more adjacent ones form a substituted or unsubstituted monocyclic ring by bonding to each other, a substituted or unsubstituted condensed ring by bonding to each other, or do not bond to each other, do not form the substituted or unsubstituted monocyclic ring, and do not form the substituted or unsubstituted condensed ring, and R D21 ~R D24 and R D26 ~R D29 are each independently a hydrogen atom, a cyano group, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted halogenated alkyl group having 1 to 50 carbon atoms, A cycloalkyl group having 3 to 50 ring-forming carbon atoms, which may or may not be substituted, -Si(R 901 )(R 902 )(R 903 ) group represented by -O-(R 904 ) group represented by An aryl group having 6 to 50 ring-forming carbon atoms, which may or may not be substituted, or A heterocyclic group having 5 to 50 ring-forming atoms, which may or may not be substituted.)

[0245] In one aspect of the organic EL element according to the present embodiment, R in the general formula (cHT3-11) D26 , R D28 or R D29 is a single bond that binds to L D1 .

[0246] When R in the general formula (cHT3-11) D26 is a single bond that binds to L D1 , the compound represented by the general formula (cHT3-11) is represented by the following general formula (cHT3-12).

[0247]

Chemical formula

[0248] When R in the general formula (cHT3-11) D28 is a single bond that binds to L D1 , the compound represented by the general formula (cHT3-11) is represented by the following general formula (cHT3-13).

[0249]

Chemical formula

[0250] When R in the general formula (cHT3-11) D29 is a single bond that binds to L D1 , the compound represented by the general formula (cHT3-11) is represented by the following general formula (cHT3-14).

[0251]

Chem.

[0252] (In the general formula (cHT3-12), the general formula (cHT3-13), and the general formula (cHT3-14), Ar 312 、Ar 313 、L D1 、L D2 、L D3 and R D21 ~R D29 are respectively synonymous with Ar 312 、Ar 313 、L D1 、L D2 、L D3 and R D21 ~R D29 in the general formula (cHT3-11).)

[0253] The compound represented by the general formula (cHT3-3) may be a compound represented by the general formula (cHT3-31).

[0254]

Chem.

[0255] (In the general formula (cHT3-31), Ar 312 、Ar 313 、L D1 、L D2 、L D3 and X 3 are respectively synonymous with Ar 312 、Ar 313 、L D1 、L D2 、L D3 and X 3 in the general formula (cHT3-3), and one of R D47 ~R D50 is a single bond that binds to L D1 ; *m represents the bonding position, and R D41 ~R D44and L D1 a non-single bond R that binds to D47 ~R D50 at least one set of two or more adjacent ones among bind to each other to form a substituted or unsubstituted monocyclic ring, or bind to each other to form a substituted or unsubstituted condensed ring, or do not bind to each other, do not form the substituted or unsubstituted monocyclic ring and do not form the substituted or unsubstituted condensed ring, R D41 ~R D50 each independently is a hydrogen atom, a cyano group, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted halogenated alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 ) group represented by -O-(R 904 ) group represented by a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms.)

[0256] In one aspect of the organic EL element according to this embodiment, L D1 is a single bond or a substituted or unsubstituted phenylene group.

[0257] In one aspect of the organic EL element according to this embodiment, in the compounds represented by the general formulas (cHT3-1) to (cHT3-4), (cHT3-11) to (cHT3-14), and (cHT3-31), the substituent in the case of "substituted or unsubstituted" is not a group represented by -N(R C6 )(R C7 ). In this embodiment, R C6 and R C7is, independently of one another, a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, and a plurality of Rs C6 are the same as or different from each other, and a plurality of Rs C7 are the same as or different from each other. When the substituent in the case of "substituted or unsubstituted" is not a group represented by -N(R C6 )(R C7 ), the compounds represented by the general formulas (cHT3-1) to (cHT3-4), (cHT3-11) to (cHT3-14), and (cHT3-31) are monoamine compounds.

[0258] In the organic EL element according to the present embodiment, R 901 , R 902 , R 903 , and R 904 are, independently of one another, a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, When a plurality of Rs 901 exist, the plurality of Rs 901 are the same as or different from each other, When a plurality of Rs 902 exist, the plurality of Rs 902 are the same as or different from each other, When a plurality of Rs 903 exist, the plurality of Rs 903 are the same as or different from each other, When a plurality of Rs 904 exist, the plurality of Rs 904 are the same as or different from each other.

[0259] In one aspect of the organic EL element according to the present embodiment, it is preferable that all the groups described as "substituted or unsubstituted" are "unsubstituted" groups.

[0260] In one aspect of the organic EL element according to the present embodiment, the first hole transport band material, the second hole transport band material, the third hole transport band material, and the fourth hole transport band material are each independently a monoamine compound having one substituted or unsubstituted amino group in the molecule, a diamine compound having two substituted or unsubstituted amino groups in the molecule, a triamine compound having three substituted or unsubstituted amino groups in the molecule, or a tetraamine compound having four substituted or unsubstituted amino groups in the molecule.

[0261] In one aspect of the organic EL element according to the present embodiment, the first hole transport band material, the second hole transport band material, the third hole transport band material, and the fourth hole transport band material are each independently a monoamine compound having one substituted or unsubstituted amino group in the molecule, or a diamine compound having two substituted or unsubstituted amino groups in the molecule.

[0262] In one aspect of the organic EL element according to the present embodiment, the first hole transport band material, the second hole transport band material, the third hole transport band material, and the fourth hole transport band material are each independently a monoamine compound having one substituted or unsubstituted amino group in the molecule.

[0263] (Method for manufacturing hole transport band material) The hole transport band material according to the present embodiment can be manufactured by a known method, or can be manufactured by following the method and using known alternative reactions and raw materials suitable for the target product.

[0264] (Specific examples of hole transport band material) Specific examples of the hole transport band material according to the present embodiment include, for example, the following compounds, and specific examples of the first compound and the second compound described in the first embodiment. However, the present invention is not limited to these specific examples.

[0265]

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[0340] [Chemical]

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[0342] [Chemical]

[0343] [Chemical]

[0344] [Chemical]

[0345] [Chemical]

[0346] [Chemical]

[0347] [Chemical]

[0348] [Chemical]

[0349] [Chemical]

[0350]

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[0371] [Chemistry]

[0372] [Chemistry]

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[0375] [Chemistry]

[0376] [Chemistry]

[0377] [Chemistry]

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[0379] [Chemistry]

[0380] [Chemistry]

[0381] [Chemistry]

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[0393]

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[0394] (Positive hole injection layer) In one aspect of the organic EL element according to the present embodiment, the anode and the positive hole injection layer are in direct contact with each other. In one aspect of the organic EL element according to the present embodiment, the positive hole injection layer and the first positive hole transport layer are in direct contact with each other. In one aspect of the organic EL element according to the present embodiment, the positive hole injection layer and the third positive hole transport layer are in direct contact with each other.

[0395] In one aspect of the organic EL element according to the present embodiment, the positive hole injection layer contains an acceptor material.

[0396] ·Acceptor material The acceptor material includes at least one of a first ring structure represented by the following general formula (11) and a second ring structure represented by the following general formula (12).

[0397]

Chem.

[0398] (The first ring structure represented by the general formula (11) is condensed with at least one of an aromatic hydrocarbon ring having 6 to 50 ring-forming carbon atoms and a heterocyclic ring having 5 to 50 ring-forming atoms, which are either substituted or unsubstituted, in the molecule of the acceptor material, =X 10 (The structure represented by is represented by the following general formula (11a), (11b), (11c), (11d), (11e), (11f), (11g), (11h), (11i), (11j), (11k) or (11m).)

[0399]

Chem.

[0400] [Chemical formula]

[0401] (In the general formulas (11a), (11b), (11c), (11d), (11e), (11f), (11g), (11h), (11i), (11j), (11k), or (11m), R 11 ~R 14 and R 111 ~R 120 are each independently a hydrogen atom, a halogen atom, a hydroxy group, a cyano group, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted halogenated alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 ), -O-(R 904 ), -S-(R 905 ), -N(R 906 )(R 907 ), a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms.)

[0402] (In the general formula (12), X 1 ~X 5 are each independently a nitrogen atom, a carbon atom bonded to R 15 or a carbon atom bonded to another atom in the molecule of the acceptor material, X 1 ~X 5 Among them, at least one is a carbon atom that binds to other atoms in the molecule of the acceptor material, R 15 is a hydrogen atom, a halogen atom, a cyano group, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted halogenated alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, -Si(R 901 )(R 902 )(R 903 ) group represented by -O-(R 904 ) group represented by -S-(R 905 ) group represented by -N(R 906 )(R 907 ) group represented by a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, a carboxy group, a substituted or unsubstituted ester group, a substituted or unsubstituted carbamoyl group, a nitro group, and is selected from the group consisting of substituted or unsubstituted siloxanyl groups, R 15 When there are a plurality of them, the plurality of R 15 are the same as or different from each other.)

[0403] (In the acceptor material, R 901 ~R 907 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, A cycloalkyl group having 3 to 50 ring-forming carbon atoms, which may or may not be substituted, an aryl group having 6 to 50 ring-forming carbon atoms, which may or may not be substituted, or a heterocyclic group having 5 to 50 ring-forming atoms, which may or may not be substituted, R 901 When there are a plurality of R's, the plurality of R's 901 are the same as or different from each other, R 902 When there are a plurality of R's, the plurality of R's 902 are the same as or different from each other, R 903 When there are a plurality of R's, the plurality of R's 903 are the same as or different from each other, R 904 When there are a plurality of R's, the plurality of R's 904 are the same as or different from each other, R 905 When there are a plurality of R's, the plurality of R's 905 are the same as or different from each other, R 906 When there are a plurality of R's, the plurality of R's 906 are the same as or different from each other, R 907 When there are a plurality of R's, the plurality of R's 907 are the same as or different from each other.)

[0404] In one aspect of the organic EL element according to this embodiment, the acceptor material has at least one cyano group.

[0405] In one aspect of the organic EL element according to this embodiment, the hole injection layer contains a first organic material, the acceptor material and the first organic material are different from each other, and the content of the acceptor material in the hole injection layer is less than 50% by mass. In one aspect of the organic EL element according to this embodiment, the content of the acceptor material in the hole injection layer is 10% by mass or less, or 5% by mass or less. In one aspect of the organic EL element according to this embodiment, the content of the acceptor material in the hole injection layer is 1% by mass or more and 3% by mass or less.

[0406] In one aspect of the organic EL element according to the present embodiment, it is preferable that the first organic material is a compound selected from the group consisting of the above-described hole transport band materials.

[0407] In one aspect of the organic EL element according to the present embodiment, the first organic material is a monoamine compound having one substituted or unsubstituted amino group in the molecule, or a diamine compound having two substituted or unsubstituted amino groups in the molecule.

[0408] In one aspect of the organic EL element according to the present embodiment, the first organic material is a monoamine compound having one substituted or unsubstituted amino group in the molecule.

[0409] In one aspect of the organic EL element according to the present embodiment, when the hole injection layer contains an acceptor material and a first organic material, the content of the first organic material in the hole injection layer is preferably 40% by mass or more, more preferably 45% by mass or more, and still more preferably 50% by mass or more. The content of the first hole transport band material in the hole injection layer is preferably 99.5% by mass or less. The total content of the acceptor material and the first organic material in the hole injection layer is 100% by mass or less.

[0410] The ester group in the present specification is at least one group selected from the group consisting of an alkyl ester group and an aryl ester group. The alkyl ester group in the present specification is represented by, for example, -C(=O)OR E wherein R E is, for example, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms (preferably 1 to 10 carbon atoms). The aryl ester group in the present specification is represented by, for example, -C(=O)OR Ar wherein R Ar is, for example, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms.

[0411] The siloxanyl group in the present specification is a silicon compound group via an ether bond, for example, a trimethylsiloxanyl group.

[0412] The carbamoyl group in the present specification is -CONH 2 represented by. The substituted carbamoyl group in the present specification is, for example, -CONH-Ar C or -CONH-R C represented by. Ar C is at least any group selected from the group consisting of an aryl group having 6 to 50 ring-forming carbon atoms (preferably 6 to 10 ring-forming carbon atoms) and a heterocyclic group having 5 to 50 ring-forming atoms (preferably 5 to 14 ring-forming atoms), which may be substituted or unsubstituted. Ar C may be a group in which a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms is bonded to a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms. R C is, for example, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms (preferably 1 to 6 carbon atoms).

[0413] In the acceptor material, the groups described as "substituted or unsubstituted" are preferably all "unsubstituted" groups.

[0414] (Specific examples of acceptor materials) Specific examples of the acceptor material include, for example, the following compounds. However, the present invention is not limited to these specific examples of the acceptor material.

[0415]

Chemical formula

[0416]

Chemical formula

[0417]

Chemical formula

[0418]

Chem.

[0419]

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[0420]

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[0421]

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[0422]

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[0423]

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[0424]

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[0425]

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[0426]

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[0427]

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[0428] [Chemical]

[0429] [Chemical]

[0430] [Chemical]

[0431] [Chemical]

[0432] [Chemical]

[0433] [Chemical]

[0434] [Chemical]

[0435] [Chemical]

[0436] [Chemical]

[0437] [Chemical]

[0438] [Chemical]

[0439]

Chem.

[0440]

Chem.

[0441]

Chem.

[0442]

Chem.

[0443]

Chem.

[0444]

Chem.

[0445]

Chem.

[0446]

Chem.

[0447]

Chem.

[0448]

Chem.

[0449]

Chem.

[0450]

Chem.

[0451]

Chem.

[0452]

Chem.

[0453]

Chem.

[0454]

Chem.

[0455]

Chem.

[0456]

Chem.

[0457]

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[0459]

Chem.

[0460] [Chemical]

[0461] [Chemical]

[0462] <Emission band> The emission band is disposed between the hole transport band and the electron transport band. The emission band includes at least one light-emitting layer.

[0463] In one aspect of the organic EL element according to the present embodiment, the emission band includes a light-emitting layer containing a host material and a light-emitting compound that exhibits emission with a maximum peak wavelength of 500 nm or less.

[0464] In one aspect of the organic EL element according to the present embodiment, the full width at half maximum of the maximum peak of the light-emitting compound is 1 nm or more and 30 nm or less.

[0465] In one aspect of the organic EL element according to the present embodiment, the emission band includes two or more light-emitting layers, and at least two light-emitting layers are stacked.

[0466] (First light-emitting layer) In one aspect of the organic EL element according to the present embodiment, as the at least one light-emitting layer, a first light-emitting layer is included. In one aspect of the organic EL element according to the present embodiment, the first light-emitting layer includes a first host material. The first host material is not particularly limited, and for example, a compound represented by the general formula (H1) described later can be used. In one aspect of the organic EL element according to the present embodiment, the first light-emitting layer contains a first light-emitting compound. The first light-emitting compound is not particularly limited. In one aspect of the organic EL element according to the present embodiment, the first light-emitting layer contains a first host material and a first light-emitting compound.

[0467] The first light-emitting compound preferably is a compound that exhibits light emission with a maximum peak wavelength of 500 nm or less, more preferably a compound that exhibits light emission with a maximum peak wavelength of 430 nm or more and 480 nm or less. The first light-emitting compound preferably is a fluorescent light-emitting compound that exhibits fluorescent light emission with a maximum peak wavelength of 500 nm or less, more preferably a fluorescent light-emitting compound that exhibits fluorescent light emission with a maximum peak wavelength of 430 nm or more and 480 nm or less. In one aspect of the organic EL element according to the present embodiment, the first light-emitting layer contains a first host material and a first light-emitting compound that exhibits light emission with a maximum peak wavelength of 500 nm or less.

[0468] In one aspect of the organic EL element according to the present embodiment, the full width at half maximum of the maximum peak of the first light-emitting compound is 1 nm or more and 30 nm or less.

[0469] In one aspect of the organic EL element according to the present embodiment, the first light-emitting compound is a compound that does not contain an azine ring structure in the molecule.

[0470] In one aspect of the organic EL element according to the present embodiment, the first light-emitting compound preferably is not a boron-containing complex, more preferably is not a complex.

[0471] As the fluorescent light-emitting compound that emits blue fluorescent light and can be used in the first light-emitting layer, for example, pyrene derivatives, styrylamine derivatives, chrysene derivatives, fluoranthene derivatives, fluorene derivatives, diamine derivatives, triarylamine derivatives, etc. can be used. In this specification, blue light emission refers to light emission with a maximum peak wavelength of the emission spectrum within the range of 430 nm or more and 500 nm or less.

[0472] In one aspect of the organic EL element according to the present embodiment, the emission band includes two or more light-emitting layers.

[0473] In one aspect of the organic EL element according to the present embodiment, when the light-emitting layer includes two or more light-emitting bands, all of the two or more light-emitting layers are fluorescent light-emitting layers. That is, in one aspect of the organic EL element according to the present embodiment, all of the light-emitting layers included in the light-emitting band are fluorescent light-emitting layers. In one aspect of the organic EL element according to the present embodiment, the first light-emitting layer does not contain a metal complex. Further, in one aspect of the organic EL element according to the present embodiment, the first light-emitting layer does not contain a boron-containing complex.

[0474] In one aspect of the organic EL element according to the present embodiment, the first light-emitting layer does not contain a phosphorescent material (dopant material). In one aspect of the organic EL element according to the present embodiment, the first light-emitting layer does not contain a heavy metal complex and a phosphorescent rare earth metal complex. Here, examples of the heavy metal complex include an iridium complex, an osmium complex, and a platinum complex.

[0475] The method for measuring the maximum peak wavelength of a compound is as follows. A 5 μmol / L toluene solution of the compound to be measured is prepared and placed in a quartz cell, and the emission spectrum of this sample (vertical axis: emission intensity, horizontal axis: wavelength) is measured at room temperature (300 K). The emission spectrum can be measured with a spectrofluorometer (device name: F-7000) manufactured by Hitachi High-Tech Science Corporation. Note that the emission spectrum measuring device is not limited to the device used here. In the emission spectrum, the peak wavelength of the emission spectrum at which the emission intensity is maximum is defined as the maximum peak wavelength. In this specification, the maximum peak wavelength of fluorescence emission may be referred to as the fluorescence emission maximum peak wavelength (FL-peak).

[0476] In the emission spectrum of the first light-emitting compound, when the peak at which the emission intensity is maximum is defined as the maximum peak and the height of the maximum peak is set to 1, the height of the other peaks appearing in the emission spectrum is preferably less than 0.6. Note that the peak in the emission spectrum is the maximum value. In addition, in the emission spectrum of the first light-emitting compound, the number of peaks is preferably less than three.

[0477] In one aspect of the organic EL element according to the present embodiment, the first light-emitting layer contains the first light-emitting compound in an amount of 0.5% by mass or more based on the total mass of the first light-emitting layer. The first light-emitting layer preferably contains the first light-emitting compound in an amount of 10% by mass or less, more preferably 7% by mass or less, and even more preferably 5% by mass or less based on the total mass of the first light-emitting layer.

[0478] In this specification, the "host material" is, for example, a material contained in "50% by mass or more of the layer". In one aspect of the organic EL element according to the present embodiment, the first light-emitting layer preferably contains the first host material in an amount of 60% by mass or more, more preferably 70% by mass or more, even more preferably 80% by mass or more, still more preferably 90% by mass or more, and even still more preferably 95% by mass or more based on the total mass of the first light-emitting layer. The first light-emitting layer preferably contains the first host material in an amount of 99.5% by mass or less based on the total mass of the first light-emitting layer. However, when the first light-emitting layer contains the first host material and the first light-emitting compound, the upper limit of the total content ratio of the first host material and the first light-emitting compound is 100% by mass.

[0479] Note that the organic EL element according to the present embodiment does not exclude the inclusion of materials other than the first host material and the first light-emitting compound in the first light-emitting layer. The first light-emitting layer may contain only one type of the first host material or two or more types thereof. The first light-emitting layer may contain only one type of the first light-emitting compound or two or more types thereof.

[0480] (The first host material) In one aspect of the organic EL element according to this embodiment, the first host material has at least one deuterium atom. In one aspect of the organic EL element according to this embodiment, the first host material does not have a deuterium atom.

[0481] · A compound represented by the general formula (H1) In one aspect of the organic EL element according to this embodiment, the first host material is a compound represented by the following general formula (H1).

[0482]

Chemical formula

[0483] (In the general formula (H1), R 301 ~R 308 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 ) group represented by, -O-(R 904 ) group represented by, -S-(R 905 ) group represented by, -N(R 906 )(R 907 ) group represented by, a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, -C(=O)R 801 group represented by, -COOR 802 group represented by, a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, L 301 and L 302 are each independently, a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms, Ar 301 and Ar 302 are each independently, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms.) (In the compound represented by the general formula (H1), R 901 , R 902 , R 903 , R 904 , R 905 , R 906 , R 907 , R 801 and R 802 are each independently, a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, R 901 When a plurality of R 901 are present, the plurality of R are the same as or different from each other, 902 When a plurality of R 902 are present, the plurality of R are the same as or different from each other, 903 When a plurality of R 903 are present, the plurality of R are the same as or different from each other, 904When there are a plurality of them, the plurality of Rs 904 are the same as or different from each other, R 905 When there are a plurality of them, the plurality of Rs 905 are the same as or different from each other, R 906 When there are a plurality of them, the plurality of Rs 906 are the same as or different from each other, R 907 When there are a plurality of them, the plurality of Rs 907 are the same as or different from each other, R 801 When there are a plurality of them, the plurality of Rs 801 are the same as or different from each other, R 802 When there are a plurality of them, the plurality of Rs 802 are the same as or different from each other.)

[0484] In one aspect of the organic EL element according to the present embodiment, Ar 301 and Ar 302 are each independently a phenyl group, a naphthyl group, a phenanthryl group, a biphenyl group, a terphenyl group, a diphenylfluorenyl group, a dimethylfluorenyl group, a benzodiphenylfluorenyl group, a benzodimethylfluorenyl group, a dibenzofuranyl group, a dibenzothienyl group, a naphthobenzofuranyl group, or a naphthobenzothienyl group.)

[0485] In one aspect of the organic EL element according to the present embodiment, L 301 is a single bond or an unsubstituted arylene group having 6 to 22 ring-forming carbon atoms, and Ar 301 is a substituted or unsubstituted aryl group having 6 to 22 ring-forming carbon atoms.)

[0486] In one aspect of the organic EL element according to this embodiment, R 301 ~R 308 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, or a group represented by -Si(R 901 )(R 902 )(R 903 ).

[0487] In one aspect of the organic EL element according to this embodiment, R 301 ~R 308 are hydrogen atoms.

[0488] In one aspect of the organic EL element according to this embodiment, L 302 is a single bond and Ar 302 is an unsubstituted phenyl group. In one aspect of the organic EL element according to this embodiment, L 302 is a single bond and Ar 302 is an unsubstituted 2-naphthyl group. In one aspect of the organic EL element according to this embodiment, L 302 is a single bond and Ar 302 is an unsubstituted 1-naphthyl group.

[0489] In one aspect of the organic EL element according to this embodiment, L 302 is an unsubstituted p-phenylene group and Ar 302 is an unsubstituted phenyl group. In one aspect of the organic EL element according to this embodiment, L 302 is an unsubstituted m-phenylene group and Ar 302 is an unsubstituted phenyl group. In one aspect of the organic EL element according to this embodiment, L 302 is an unsubstituted o-phenylene group and Ar 302 is an unsubstituted phenyl group. In one aspect of the organic EL element according to this embodiment, L 302 is an unsubstituted p-phenylene group and Ar 302is an unsubstituted 1-naphthyl group. In one aspect of the organic EL element according to the present embodiment, L 302 is an unsubstituted p-phenylene group, and Ar 302 is an unsubstituted 2-naphthyl group. In one aspect of the organic EL element according to the present embodiment, L 302 is an unsubstituted 1,4-naphthalenediyl group, and Ar 302 is an unsubstituted phenyl group. In one aspect of the organic EL element according to the present embodiment, L 302 is an unsubstituted m-phenylene group, and Ar 302 is an unsubstituted 2-naphthyl group.

[0490] In the first host material, it is preferable that all the groups described as "substituted or unsubstituted" are "unsubstituted" groups.

[0491] (Method for producing the first host material) The first host material can be produced by a known method. Further, the first host material can also be produced by following a known method and using known alternative reactions and raw materials suitable for the target product.

[0492] (Specific examples of the first host material) Specific examples of the first host material include, for example, the following compounds. However, the present invention is not limited to these specific examples of the first host material.

[0493]

Chemical formula

[0494]

Chemical formula

[0495]

Chemical formula

[0496]

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[0497]

Chem.

[0498]

Chem.

[0499]

Chem.

[0500]

Chem.

[0501]

Chem.

[0502]

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[0503]

Chem.

[0504]

Chem.

[0505]

Chem.

[0506]

Chem.

[0507]

Chem.

[0508]

Chem.

[0509]

Chem.

[0510]

Chem.

[0511]

Chem.

[0512]

Chem.

[0513]

Chem.

[0514]

Chem.

[0515]

Chem.

[0516]

Chem.

[0517] [Chemistry]

[0518] [Chemistry]

[0519] In one aspect of the organic EL element according to the present embodiment, the light emission band consists of only the first light emitting layer. In one aspect of the organic EL element according to the present embodiment, the light emission band includes the first light emitting layer and further the second light emitting layer. In one aspect of the organic EL element according to the present embodiment, the light emission band consists of only the first light emitting layer and the second light emitting layer.

[0520] In one aspect of the organic EL element according to the present embodiment, the light emission band has at least a first light emitting layer containing a first host material and a second light emitting layer containing a second host material. The first host material and the second host material are different from each other. When the light emission band has at least the first light emitting layer and the second light emitting layer, the light emission efficiency can be improved by utilizing Triplet-Triplet-Annihilation (sometimes referred to as TTA). TTA is a mechanism in which triplet excitons collide with each other to generate singlet excitons. Note that the TTA mechanism may also be referred to as the TTF mechanism as described in International Publication No. 2010 / 134350.

[0521] The TTF phenomenon is explained. Holes injected from the anode and electrons injected from the cathode recombine in the light emitting layer to generate excitons. As is conventionally known, the spin state is such that singlet excitons account for 25% and triplet excitons account for 75%. In a conventionally known fluorescent element, light is emitted when 25% of the singlet excitons relax to the ground state, but the remaining 75% of the triplet excitons return to the ground state through a non-radiative deactivation process without emitting light. Therefore, the theoretical limit value of the internal quantum efficiency of a conventional fluorescent element has been said to be 25%. On the other hand, the behavior of triplet excitons generated inside organic substances has been theoretically investigated. According to S.M. Bachilo et al. (J. Phys. Chem. A, 104, 7711 (2000)), assuming that higher-order excitons such as quintets immediately return to triplets, when the density of triplet excitons (hereinafter referred to as 3 A * as described) increases, collisions occur between triplet excitons and the following reaction occurs. Here, 1 A represents the ground state, 1 A * represents the lowest excited singlet exciton. 3 A * + 3 A * →(4 / 9) 1 A+(1 / 9) 1 A * +(13 / 9) 3 A * That is, 5 3 A * →4 1 A + 1A * It is predicted that 1 / 5, that is, 20% of the initially generated 75% of triplet excitons will change to singlet excitons. Therefore, the singlet excitons contributing as light are 40%, which is obtained by adding 75%×(1 / 5)=15% to the initially generated 25%. At this time, the luminescence ratio (TTF ratio) derived from TTF in the total luminescence intensity is 15 / 40, that is, 37.5%. Also, assuming that the initially generated 75% of triplet excitons collide with each other to generate singlet excitons (one singlet exciton is generated from two triplet excitons), a very high internal quantum efficiency of 62.5% is obtained, which is obtained by adding 75%×(1 / 2)=37.5% to the initially generated 25% of singlet excitons. At this time, the TTF ratio is 37.5 / 62.5 = 60%.

[0522] In one aspect of the organic EL element according to the present embodiment, from the viewpoint of expressing the TTF mechanism, the triplet energy T of the first host material 1 (H1) and the triplet energy T of the second host material 1(H2) preferably satisfies the relationship of the following formula (Formula 1), and more preferably satisfies the relationship of the following formula (Formula 2). T 1 (H2) > T 1 (H1) …(Formula 1) T 1 (H2) - T 1 (H1) > 0.03 eV …(Formula 2)

[0523] In one aspect of the organic EL element according to the present embodiment, when the first light-emitting layer and the second light-emitting layer satisfy the relationship of the formula (Formula 1), the luminous efficiency of the element can be improved.

[0524] In one aspect of the organic EL element according to the present embodiment, by satisfying the relationship of the formula (Formula 1), even when carriers are excessively present at the interface between the second light-emitting layer and the organic layer directly in contact with the second light-emitting layer, it is considered that triplet excitons generated by the recombination of holes and electrons in the second light-emitting layer are less likely to be quenched at the interface between the second light-emitting layer and the organic layer. For example, when the recombination region is locally present at the interface between the second light-emitting layer and the hole transport layer or the electron barrier layer, quenching by excessive electrons is considered. On the other hand, when the recombination region is locally present at the interface between the second light-emitting layer and the electron transport layer or the hole barrier layer, quenching by excessive holes is considered. One aspect of the organic EL element according to the present embodiment includes the first light-emitting layer and the second light-emitting layer so as to satisfy the relationship of the formula (Formula 1), whereby triplet excitons generated in the second light-emitting layer do not move to the first light-emitting layer without being quenched by excessive carriers, and reverse movement from the first light-emitting layer to the second light-emitting layer can be suppressed. As a result, in the first light-emitting layer, the TTF mechanism is manifested, singlet excitons are efficiently generated, and the luminous efficiency is improved. Thus, the organic EL element includes, as different regions, a second light-emitting layer that mainly generates triplet excitons, and a first light-emitting layer that mainly exhibits the TTF mechanism by utilizing the triplet excitons that have migrated from the second light-emitting layer. By using a compound having a smaller triplet energy than the second host material in the second light-emitting layer as the first host material in the first light-emitting layer and providing a difference in triplet energy, the luminous efficiency is improved.

[0525] In one aspect of the organic EL element according to this embodiment, the first light-emitting layer and the second light-emitting layer are in direct contact with each other.

[0526] In this specification, the layer structure in which "the first light-emitting layer and the second light-emitting layer are in direct contact with each other" may include any of the following modes (LS1), (LS2), and (LS3). (LS1) A mode in which a region in which both the first host material and the second host material are mixed occurs in the process of passing through the vapor deposition process of the compound related to the first light-emitting layer and the vapor deposition process of the compound related to the second light-emitting layer, and the region exists at the interface between the first light-emitting layer and the second light-emitting layer. (LS2) When the first light-emitting layer and the second light-emitting layer contain a light-emitting compound, a region in which the first host material, the second host material, and the light-emitting compound are mixed occurs in the process of passing through the vapor deposition process of the compound related to the first light-emitting layer and the vapor deposition process of the compound related to the second light-emitting layer, and the region exists at the interface between the first light-emitting layer and the second light-emitting layer. (LS3) When the first light-emitting layer and the second light-emitting layer contain a light-emitting compound, a region composed of the light-emitting compound, a region composed of the first host material, or a region composed of the second host material occurs in the process of passing through the vapor deposition process of the compound related to the first light-emitting layer and the vapor deposition process of the compound related to the second light-emitting layer, and the region exists at the interface between the first light-emitting layer and the second light-emitting layer.

[0527] (The second light-emitting layer) In one aspect of the organic EL element according to this embodiment, the second light-emitting layer contains a second host material. The second host material is not particularly limited. In one aspect of the organic EL element according to the present embodiment, the second light-emitting layer contains a second light-emitting compound. The second light-emitting compound is not particularly limited.

[0528] In one aspect of the organic EL element according to the present embodiment, the second light-emitting layer contains a second host material and a second light-emitting compound. In one aspect of the organic EL element according to the present embodiment, the second light-emitting compound and the first light-emitting compound contained in the first light-emitting layer are either the same as each other or different compounds. In one aspect of the organic EL element according to the present embodiment, the second host material and the first host material contained in the first light-emitting layer are different compounds. The second light-emitting compound is preferably a compound that exhibits light emission with a maximum peak wavelength of 500 nm or less, and more preferably a compound that exhibits light emission with a maximum peak wavelength of 430 nm or more and 480 nm or less. The second light-emitting compound is preferably a fluorescent light-emitting compound that exhibits fluorescent light emission with a maximum peak wavelength of 500 nm or less, and more preferably a fluorescent light-emitting compound that exhibits fluorescent light emission with a maximum peak wavelength of 430 nm or more and 480 nm or less. In one aspect of the organic EL element according to the present embodiment, the second light-emitting layer contains a second host material and a second light-emitting compound that exhibits light emission with a maximum peak wavelength of 500 nm or less.

[0529] In one aspect of the organic EL element according to the present embodiment, the full width at half maximum of the maximum peak of the second light-emitting compound is 1 nm or more and 30 nm or less. The method for measuring the maximum peak wavelength of the compound is as described above.

[0530] In one aspect of the organic EL element according to the present embodiment, the second light-emitting compound is a compound that does not contain an azine ring structure in the molecule.

[0531] In one aspect of the organic EL element according to the present embodiment, the second light-emitting compound is preferably not a boron-containing complex, and more preferably not a complex.

[0532] As compounds that can be used in the second light-emitting layer and emit fluorescence in blue, for example, pyrene derivatives, styrylamine derivatives, chrysene derivatives, fluoranthene derivatives, fluorene derivatives, diamine derivatives, triarylamine derivatives, etc. can be used.

[0533] In one aspect of the organic EL element according to the present embodiment, the second light-emitting layer does not contain a metal complex. Also, in one aspect of the organic EL element according to the present embodiment, the second light-emitting layer does not contain a boron-containing complex.

[0534] In one aspect of the organic EL element according to the present embodiment, the second light-emitting layer does not contain a phosphorescent material (dopant material). In one aspect of the organic EL element according to the present embodiment, the second light-emitting layer does not contain a heavy metal complex and a phosphorescent rare earth metal complex.

[0535] In one aspect of the organic EL element according to the present embodiment, the second light-emitting layer contains a light-emitting compound in an amount of 0.5% by mass or more of the total mass of the second light-emitting layer. The second light-emitting layer preferably contains a light-emitting compound in an amount of 10% by mass or less, more preferably 7% by mass or less, and even more preferably 5% by mass or less of the total mass of the second light-emitting layer.

[0536] In one aspect of the organic EL element according to the present embodiment, the second light-emitting layer preferably contains a second host material in an amount of 60% by mass or more of the total mass of the second light-emitting layer, more preferably 70% by mass or more, even more preferably 80% by mass or more, still more preferably 90% by mass or more, and yet even more preferably 95% by mass or more of the total mass of the second light-emitting layer. The second light-emitting layer preferably contains the second host material in an amount of 99.5% by mass or less of the total mass of the second light-emitting layer. When the second light-emitting layer contains a second host material and a second light-emitting compound, the upper limit of the total content rate of the second host material and the second light-emitting compound is 100% by mass.

[0537] Note that the organic EL element according to the present embodiment does not exclude that the second light-emitting layer contains materials other than the second host material and the second light-emitting compound. The second light-emitting layer may contain only one type of the second host material, or may contain two or more types. The second light-emitting layer may contain only one type of the second light-emitting compound, or may contain two or more types.

[0538] In one aspect of the organic EL element according to the present embodiment, the triplet energy T 1 (D1) of the first light-emitting compound and the triplet energy T 1 (H1) of the first host material preferably satisfy the relationship of the following mathematical formula (Formula 4A). T 1 (D1)> T 1 (H1) …(Formula 4A)

[0539] In one aspect of the organic EL element according to the present embodiment, when the first light-emitting compound and the first host material satisfy the relationship of the mathematical formula (Formula 4A), the triplet excitons generated in the second light-emitting layer move to the first light-emitting layer, and the energy transfers to the molecules of the first host material rather than the first light-emitting compound having a higher triplet energy. Also, the triplet excitons generated by the recombination of holes and electrons on the first host material do not move to the first light-emitting compound having a higher triplet energy. The triplet excitons generated by recombination on the molecules of the first light-emitting compound quickly transfer energy to the molecules of the first host material. The triplet excitons of the first host material do not move to the first light-emitting compound, and singlet excitons are generated by the efficient collision of triplet excitons with each other on the first host material due to the TTF phenomenon.

[0540] In one aspect of the organic EL element according to the present embodiment, the singlet energy S of the first host material 1(H1) and the singlet energy S of the first light-emitting compound 1 (D1) preferably satisfy the relationship of the following formula (Formula 4). S 1 (H1) > S 1 (D1) …(Formula 4)

[0541] In one aspect of the organic EL element according to the present embodiment, since the singlet energy of the first light-emitting compound is smaller than the singlet energy of the first host material by the first light-emitting compound and the first host material satisfying the relationship of the formula (Formula 4), the singlet excitons generated by the TTF phenomenon move from the first host material to the first light-emitting compound in terms of energy and contribute to the light emission (preferably fluorescent light emission) of the first light-emitting compound.

[0542] In one aspect of the organic EL element according to the present embodiment, the singlet energy S 1 (H2) of the second host material and the singlet energy S 1 (D2) of the second light-emitting compound preferably satisfy the relationship of the following formula (Formula 20). S 1 (H2) > S 1 (D2) …(Formula 20)

[0543] Since the second host material and the second light-emitting compound satisfy the relationship of the formula (Formula 20), the singlet excitons generated on the second host material are likely to move from the second host material to the second light-emitting compound in terms of energy and contribute to the light emission (preferably fluorescent light emission) of the second light-emitting compound.

[0544] In the organic EL element according to the second embodiment, the triplet energy T 1 (H2) of the second host material and the triplet energy T 1 (D2) of the second light-emitting compound preferably satisfy the relationship of the following formula (Formula 20A). T 1 (D2) > T 1 (H2) …(Formula 20A)

[0545] When the second host material and the second light-emitting compound satisfy the relationship of Formula (20A), the triplet excitons generated in the second light-emitting layer move on the second host material rather than the second light-emitting compound having a higher triplet energy, so that they are more likely to move to the first light-emitting layer.

[0546] In one aspect of the organic EL element according to the present embodiment, the film thickness of the first light-emitting layer is preferably 5 nm or more, and more preferably 15 nm or more. If the film thickness of the first light-emitting layer is 5 nm or more, when the emission band has the second light-emitting layer, it is easy to suppress the triplet excitons that have moved from the second light-emitting layer to the first light-emitting layer from returning to the second light-emitting layer again. Further, if the film thickness of the first light-emitting layer is 5 nm or more, triplet excitons can be sufficiently separated from the recombination portion in the second light-emitting layer. In one aspect of the organic EL element according to the present embodiment, the film thickness of the first light-emitting layer is preferably 20 nm or less. If the film thickness of the first light-emitting layer is 20 nm or less, the density of triplet excitons in the first light-emitting layer can be improved, and the TTF phenomenon can be more easily caused. In one aspect of the organic EL element according to the present embodiment, the film thickness of the first light-emitting layer is preferably 5 nm or more and 20 nm or less.

[0547] In one aspect of the organic EL element according to the present embodiment, the film thickness of the second light-emitting layer is preferably 3 nm or more, and more preferably 5 nm or more. If the film thickness of the second light-emitting layer is 3 nm or more, it is a film thickness sufficient to cause recombination of holes and electrons in the second light-emitting layer. In one aspect of the organic EL element according to the present embodiment, the film thickness of the second light-emitting layer is preferably 15 nm or less, and more preferably 10 nm or less. If the film thickness of the second light-emitting layer is 15 nm or less, it is a film thickness sufficiently thin for triplet excitons to move to the first light-emitting layer. In one aspect of the organic EL element according to the present embodiment, the film thickness of the second light-emitting layer is more preferably 3 nm or more and 15 nm or less.

[0548] (The first host material and the second host material) In one aspect of the organic EL element according to the present embodiment, it is also preferable that the first host material and the second host material are the first compound. The first compound is, for example, any compound selected from the group consisting of compounds represented by the following general formula (1), general formula (1X), general formula (12X), general formula (13X), general formula (14X), general formula (15X), general formula (16X), general formula (1000B), general formula (16X), general formula (17X-1), general formula (17X-2), general formula (17X-3), and general formula (18). Also, the first compound can be used as the first host material and the second host material.

[0549] ·Compound represented by general formula (1) In one aspect of the organic EL element according to the present embodiment, the first compound is a compound represented by the following general formula (1). The first compound represented by the following general formula (1) has at least one group represented by the following general formula (11).

[0550] [Chemical formula]

[0551] In the general formula (1), R 101 ~R 110 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 ) group represented by, -O-(R 904 ) group represented by -S-(R 905 ) group represented by a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, -C(=O)R 801 group represented by -COOR 802 group represented by a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, or a group represented by the general formula (11), provided that at least one of R 101 ~R 110 is a group represented by the general formula (11), when there are a plurality of groups represented by the general formula (11), the plurality of groups represented by the general formula (11) are the same as or different from each other, L 101 is a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms, Ar 101 is a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, mx is 0, 1, 2, 3, 4 or 5, L 101 when two or more are present, the two or more L 101 are the same as or different from each other, Ar 101 when two or more are present, the two or more Ar 101 are the same as or different from each other, * in the general formula (11) indicates the bonding position with the pyrene ring in the general formula (1).

[0552] In the first compound represented by the general formula (1), R 901 R 902 R 903 R 904 R 905 R 906 R 907 R 801 and R 802 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, R 901 When there are a plurality of R 901 they may be the same as or different from each other, R 902 When there are a plurality of R 902 they may be the same as or different from each other, R 903 When there are a plurality of R 903 they may be the same as or different from each other, R 904 When there are a plurality of R 904 they may be the same as or different from each other, R 905 When there are a plurality of R 905 they may be the same as or different from each other, R 906 When there are a plurality of R 906 they may be the same as or different from each other, R 907 When there are a plurality of R 907 they may be the same as or different from each other, R 801 When there are a plurality of R 801 they may be the same as or different from each other, R 802 When there are a plurality of R 802 they may be the same as or different from each other.

[0553] In one embodiment, Ar 101 is preferably an aryl group having 6 to 50 ring-forming carbon atoms which may be substituted or unsubstituted.

[0554] In one embodiment, Ar 101 is a phenyl group which may be substituted or unsubstituted, a naphthyl group which may be substituted or unsubstituted, a biphenyl group which may be substituted or unsubstituted, a terphenyl group which may be substituted or unsubstituted, a pyrenyl group which may be substituted or unsubstituted, a phenanthryl group which may be substituted or unsubstituted, or a fluorenyl group which may be substituted or unsubstituted.

[0555] In one embodiment, the first compound is preferably represented by the following general formula (101).

[0556]

Chemical formula

[0557] (In the general formula (101), R 101 ~R 120 are each independently a hydrogen atom, an alkyl group having 1 to 50 carbon atoms which may be substituted or unsubstituted, a haloalkyl group having 1 to 50 carbon atoms which may be substituted or unsubstituted, an alkenyl group having 2 to 50 carbon atoms which may be substituted or unsubstituted, an alkynyl group having 2 to 50 carbon atoms which may be substituted or unsubstituted, a cycloalkyl group having 3 to 50 ring-forming carbon atoms which may be substituted or unsubstituted, -Si(R 901 )(R 902 )(R 903 ) group represented by, -O-(R 904 ) group represented by, -S-(R905 a group represented by a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, -C(=O)R 801 a group represented by -COOR 802 a group represented by a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, provided that R 101 ~R 110 one of them indicates the bonding position to L 101 and R 111 ~R 120 one of them indicates the bonding position to L 101 ; L 101 is a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms, mx is 0, 1, 2, 3, 4 or 5, L 101 when two or more Ls are present, the two or more Ls 101 are the same as or different from each other.

[0558] In one embodiment, L 101 is preferably a single bond or a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms.

[0559] In one embodiment, it is preferable that two or more of R 101 ~R 110 are groups represented by the general formula (11).

[0560] In one embodiment, two or more of R 101 ~R 110 are groups represented by the general formula (11), and Ar 101is preferably an aryl group having 6 to 50 ring-forming carbon atoms, which may or may not be substituted.

[0561] In one embodiment, Ar 101 is not a substituted or unsubstituted pyrenyl group, L 101 is not a substituted or unsubstituted pyrenylene group, R which is not the group represented by the general formula (11) 101 ~R 110 as the substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms is preferably not a substituted or unsubstituted pyrenyl group.

[0562] In one embodiment, R which is not the group represented by the general formula (11) 101 ~R 110 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, and is preferably so.

[0563] In one embodiment, R which is not the group represented by the general formula (11) 101 ~R 110 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, or a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, and is preferably so.

[0564] In one embodiment, R which is not the group represented by the general formula (11) 101 ~R 110 is preferably a hydrogen atom.

[0565] ·Compound represented by the general formula (1X) In one aspect of the organic EL element according to the present embodiment, the first compound is a compound represented by the following general formula (1X).

[0566]

Chemical formula

[0567] (In the general formula (1X), R 101 ~R 112 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, a group represented by -Si(R 901 )(R 902 )(R 903 ), a group represented by -O-(R 904 ), a group represented by -S-(R 905 ), a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, a group represented by -C(=O)R 801 ), a group represented by -COOR 802 ), a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, or a group represented by the general formula (11X), provided that at least one of R 101 ~R 112 is a group represented by the general formula (11X), When there are a plurality of groups represented by the general formula (11X), the plurality of groups represented by the general formula (11X) may be the same as or different from each other. L 101 is a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms, Ar 101 is a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, mx is 1, 2, 3, 4, or 5, L 101 When two or more Ls exist, the two or more Ls 101 may be the same as or different from each other, Ar 101 When two or more Ars exist, the two or more Ars 101 may be the same as or different from each other, The * in the general formula (11X) indicates the bonding position with the benz[a]anthracene ring in the general formula (1X).)

[0568] In one aspect of the organic EL element according to the present embodiment, the group represented by the general formula (11X) is a group represented by the following general formula (111X).

[0569]

Chemical formula

[0570] (In the general formula (111X), X 1 is CR 143 R 144 , an oxygen atom, a sulfur atom, or NR 145 and L 111 and L 112 are each independently a single bond, A substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or A substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms, ma is 1, 2, 3 or 4, mb is 1, 2, 3 or 4, ma + mb is 2, 3 or 4, Ar 101 is synonymous with Ar in the general formula (11X), 101 and R 141 、R 142 、R 143 、R 144 and R 145 are each independently A hydrogen atom, A substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, A substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, A substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, A substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, A substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 )-represented group, -O-(R 904 )-represented group, -S-(R 905 )-represented group, A substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, -C(=O)R 801 )-represented group, -COOR 802 )-represented group, A halogen atom, A cyano group, A nitro group, A substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or A substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, mc is 3, Three Rs 141are the same as or different from each other, md is 3, the three Rs 142 are the same as or different from each other.)

[0571] Among the positions of carbon atoms *1 to *8 in the ring structure represented by the following general formula (111aX) in the group represented by the general formula (111X), L is bonded to any one of the positions of *1 to *4, 111 R is bonded to the remaining three positions of *1 to *4, 141 L is bonded to any one of the positions of *5 to *8, 112 R is bonded to the remaining three positions of *5 to *8, 142 and R is bonded thereto.

[0572] [Chemical formula]

[0573] For example, in the group represented by the general formula (111X), when L is bonded to the position of the carbon atom *2 in the ring structure represented by the general formula (111aX) and L is bonded to the position of the carbon atom *7 in the ring structure represented by the general formula (111aX), the group represented by the general formula (111X) is represented by the following general formula (111bX). 111 L is bonded to the position of the carbon atom *2 in the ring structure represented by the general formula (111aX), and L 112 is bonded to the position of the carbon atom *7 in the ring structure represented by the general formula (111aX), the group represented by the general formula (111X) is represented by the following general formula (111bX).

[0574] [Chemical formula]

[0575] (In the general formula (111bX), X 1 L 111 L 112 ma, mb, Ar 101 R 141 R 142 R 143 R 144 and R 145 are each independently X in the general formula (111X), 1 L 111 L112 , ma, mb, Ar 101 , R 141 , R 142 , R 143 , R 144 and R 145 is synonymous with, a plurality of Rs 141 are the same as or different from each other, a plurality of Rs 142 are the same as or different from each other.)

[0576] In the organic EL element according to this embodiment, the group represented by the general formula (111X) is preferably the group represented by the general formula (111bX).

[0577] In the compound represented by the general formula (1X), ma is preferably 1 or 2, and mb is preferably 1 or 2.

[0578] In the compound represented by the general formula (1X), ma is preferably 1, and mb is preferably 1.

[0579] In the compound represented by the general formula (1X), Ar 101 is preferably a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms.

[0580] In the compound represented by the general formula (1X), Ar 101 is a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted benz[a]anthryl group, a substituted or unsubstituted pyrenyl group, a substituted or unsubstituted phenanthryl group, or is preferably a substituted or unsubstituted fluorenyl group.

[0581] The compound represented by the general formula (1X) is preferably represented by the following general formula (101X).

[0582] [Chemical formula]

[0583] (In the general formula (101X), R 111 and R 112 one of them indicates the bonding position with L 101 and R 133 and R 134 one of them indicates the bonding position with L 101 ; R 101 ~R 110 、R 121 ~R 130 、L 101 R 111 or R 112 、and L 101 R 133 or R 134 not at the bonding position with a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 ), -O-(R 904 ), -S-(R 905 ), a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, -C(=O)R 801 ), -COOR 802 ), a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, L 101 is a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms, mx is 1, 2, 3, 4 or 5, L 101 when two or more Ls are present, the two or more Ls 101 are the same as or different from each other.)

[0584] In the compound represented by the general formula (1X), L 101 is a single bond, or preferably a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms.

[0585] The compound represented by the general formula (1X) is preferably represented by the following general formula (102X).

[0586]

Chemical formula

[0587] (In the general formula (102X), R 111 and R 112 one of them indicates the bonding position with L 111 and one of R 133 and R 134 indicates the bonding position with L 112 and R 101 ~R 110 、R 121 ~R 130 、L 111 at the bonding positions with R 111or R 112 and L 112 R is not at the bonding position with 133 or R 134 each independently is a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 ) group represented by -O-(R 904 ) group represented by -S-(R 905 ) group represented by a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, -C(=O)R 801 ) group represented by -COOR 802 ) group represented by a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, X 1 is CR 143 R 144 R, an oxygen atom, a sulfur atom, or NR 145 and L 111 and L 112 each independently is a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms, ma is 1, 2, 3 or 4, mb is 1, 2, 3 or 4; ma+mb is 2, 3, 4 or 5; R 141 , R 142 , R 143 , R 144 and R 145 are each independently Hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms; a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms; a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, -Si(R 901 )(R 902 )(R 903 ) a group represented by -O-(R 904 ) a group represented by -S-(R 905 ) a group represented by a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms; -C(=O)R 801 A group represented by -COOR 802 A group represented by Halogen atoms, Cyano group, Nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms, mc is 3, The Three R's 141 are identical or different from each other, md is 3, The Three R's 142 are either identical or different.)

[0588] In the compound represented by the general formula (1X), it is preferable that ma in the general formula (102X) is 1 or 2, and mb is 1 or 2.

[0589] In the compound represented by the general formula (1X), it is preferable that ma in the general formula (102X) is 1, and mb is 1.

[0590] In the compound represented by the general formula (1X), it is also preferable that the group represented by the general formula (11X) is a group represented by the following general formula (11AX) or a group represented by the following general formula (11BX).

[0591]

Chemical formula

[0592] (In the general formula (11AX) and the general formula (11BX), R 121 ~R 131 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 )-represented group, -O-(R 904 )-represented group, -S-(R 905 )-represented group, a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, -C(=O)R 801 )-represented group, -COOR 802 )-represented group, A halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, when a plurality of groups represented by the general formula (11AX) exist, the plurality of groups represented by the general formula (11AX) are the same as or different from each other, when a plurality of groups represented by the general formula (11BX) exist, the plurality of groups represented by the general formula (11BX) are the same as or different from each other, L 131 and L 132 are each independently a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a divalent heterocyclic group having 5 to 50 ring-forming atoms which is substituted or unsubstituted, * in the general formula (11AX) and the general formula (11BX) each indicates the bonding position with the benz[a]anthracene ring in the general formula (1X).)

[0593] It is also preferable that the compound represented by the general formula (1X) is represented by the following general formula (103X).

[0594]

Chemical formula

[0595] (In the general formula (103X), R 101 ~R 110 and R 112 are respectively synonymous with R 101 ~R 110 and R 112 in the general formula (1X), R 121 ~R 131 , L 131 and L 132 are respectively R 121 ~R131 , L 131 and L 132 is synonymous with.)

[0596] In the compound represented by the general formula (1X), L 131 is preferably a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms.

[0597] In the compound represented by the general formula (1X), L 132 is preferably a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms.

[0598] In the compound represented by the general formula (1X), R 101 ~R 112 It is also preferable that two or more of them are groups represented by the general formula (11X).

[0599] In the compound represented by the general formula (1X), R 101 ~R 112 Two or more of them are groups represented by the general formula (11X), and Ar 101 in the general formula (11X) is preferably a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms.

[0600] In the compound represented by the general formula (1X), Ar 101 is not a substituted or unsubstituted benz[a]anthryl group, L 101 is not a substituted or unsubstituted benz[a]anthrylene group, R which is not a group represented by the general formula (11X) 101 ~R 110 It is also preferable that the substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms as is not a substituted or unsubstituted benz[a]anthryl group.

[0601] In the compound represented by the general formula (1X), R which is not a group represented by the general formula (11X) 101 ~R 112are each independently, a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, and is preferably.

[0602] In the compound represented by the general formula (1X), R which is not the group represented by the general formula (11X) 101 ~R 112 is a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, or a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, and is preferably.

[0603] In the compound represented by the general formula (1X), R which is not the group represented by the general formula (11X) 101 ~R 112 is preferably a hydrogen atom.

[0604] ·Compound represented by general formula (12X) In one aspect of the organic EL element according to the present embodiment, the first compound is a compound represented by the following general formula (12X).

[0605]

Chemical formula

[0606] (In the general formula (12X), R 1201 ~R 1210 one or more sets of two or more adjacent ones among are bonded to each other to form a substituted or unsubstituted monocyclic ring, or are bonded to each other to form a substituted or unsubstituted condensed ring, R which does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring 1201 ~R 1210 each independently is a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 ) group represented by, -O-(R 904 ) group represented by, -S-(R 905 ) group represented by, a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, -C(=O)R 801 group represented by, -COOR 802 group represented by, a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, or a group represented by the general formula (121), provided that when the substituted or unsubstituted monocyclic ring has a substituent, the substituent in this case, when the substituted or unsubstituted condensed ring has a substituent, the substituent in this case, and R 1201 ~R 1210 at least one of is a group represented by the general formula (121), when there are a plurality of groups represented by the general formula (121), the plurality of groups represented by the general formula (121) are the same as or different from each other, L 1201 is a single bond, A substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a divalent heterocyclic group having 5 to 50 ring-forming atoms, which is substituted or unsubstituted, Ar 1201 is a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, mx2 is 0, 1, 2, 3, 4 or 5, L 1201 When two or more L are present, the two or more L 1201 are the same as or different from each other, Ar 1201 When two or more Ar are present, the two or more Ar 1201 are the same as or different from each other, * in the general formula (121) indicates the bonding position with the ring represented by the general formula (12X).)

[0607] In the general formula (12X), a pair consisting of two adjacent ones of R 1201 ~R 1210 refers to the pair of R 1201 and R 1202 the pair of R 1202 and R 1203 the pair of R 1203 and R 1204 the pair of R 1204 and R 1205 the pair of R 1205 and R 1206 the pair of R 1207 and R 1208 the pair of R 1208 and R 1209 and the pair of R 1209 and R 1210 and the pair of R

[0608] · A compound represented by the general formula (13X) In one aspect of the organic EL element according to the present embodiment, the first compound is a compound represented by the following general formula (13X).

[0609]

Chemical formula

[0610] (In the general formula (13X), R 1301 ~R 1310 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 ) group represented by -O-(R 904 ) group represented by -S-(R 905 ) group represented by a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, -C(=O)R 801 ) group represented by -COOR 802 ) group represented by a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, or a group represented by the general formula (131), provided that at least one of R 1301 ~R 1310 is a group represented by the general formula (131), when there are a plurality of groups represented by the general formula (131), the plurality of groups represented by the general formula (131) are the same as or different from each other, L 1301 is a single bond, A substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms, Ar 1301 is a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, mx3 is 0, 1, 2, 3, 4 or 5, L 1301 When two or more L are present, the two or more Ls 1301 are the same as or different from each other, Ar 1301 When two or more Ar are present, the two or more Ars 1301 are the same as or different from each other, * in the general formula (131) indicates the bonding position with the fluoranthene ring in the general formula (13X).)

[0611] In the organic EL element according to this embodiment, among R to R which are not the group represented by the general formula (131) 1301 ~R 1310 any combination of two or more adjacent ones does not bond to each other. In the general formula (13X), the combination of two adjacent ones refers to the combination of R 1301 and R 1302 , the combination of R 1302 and R 1303 , the combination of R 1303 and R 1304 , the combination of R 1304 and R 1305 , the combination of R 1305 and R 1306 , the combination of R 1307 and R 1308 , the combination of R 1308 and R 1309 , and the combination of R 1309 and R 1310 .

[0612] ·Compound represented by the general formula (14X) In one aspect of the organic EL element according to this embodiment, the first compound is a compound represented by the following general formula (14X).

[0613] [Chemical]

[0614] (In the general formula (14X), R 1401 ~R 1410 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 )-represented group, -O-(R 904 )-represented group, -S-(R 905 )-represented group, a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, -C(=O)R 801 )-represented group, -COOR 802 )-represented group, a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, or a group represented by the general formula (141), provided that at least one of R 1401 ~R 1410 is a group represented by the general formula (141), when there are a plurality of groups represented by the general formula (141), the plurality of groups represented by the general formula (141) are the same as or different from each other, L 1401 is a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms, Ar 1401 is a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, mx4 is 0, 1, 2, 3, 4 or 5, L 1401 when two or more L's are present, the two or more L's 1401 are the same as or different from each other, Ar 1401 when two or more Ar's are present, the two or more Ar's 1401 are the same as or different from each other, * in the general formula (141) indicates the bonding position with the ring represented by the general formula (14X).)

[0615] · A compound represented by the general formula (15X) In one aspect of the organic EL element according to this embodiment, the first compound is a compound represented by the following general formula (15X).

[0616]

Chemical formula

[0617] (In the general formula (15X), R 1501 ~R 1514 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, A cycloalkyl group having 3 to 50 carbon atoms in the ring, which may be substituted or unsubstituted, -Si(R 901 )(R 902 )(R 903 ) group represented by -O-(R 904 ) group represented by -S-(R 905 ) group represented by An aralkyl group having 7 to 50 carbon atoms, which may be substituted or unsubstituted, -C(=O)R 801 ) group represented by -COOR 802 ) group represented by A halogen atom, A cyano group, A nitro group, An aryl group having 6 to 50 carbon atoms in the ring, which may be substituted or unsubstituted, A heterocyclic group having 5 to 50 ring-forming atoms, which may be substituted or unsubstituted, or A group represented by the general formula (151), provided that at least one of R 1501 to R 1514 is a group represented by the general formula (151), when a plurality of groups represented by the general formula (151) are present, the plurality of groups represented by the general formula (151) are the same as or different from each other, L 1501 is A single bond, An arylene group having 6 to 50 carbon atoms in the ring, which may be substituted or unsubstituted, or A divalent heterocyclic group having 5 to 50 ring-forming atoms, which may be substituted or unsubstituted, Ar 1501 is An aryl group having 6 to 50 carbon atoms in the ring, which may be substituted or unsubstituted, or A heterocyclic group having 5 to 50 ring-forming atoms, which may be substituted or unsubstituted, mx5 is 0, 1, 2, 3, 4 or 5, L 1501 when two or more L 1501 are present, the two or more L Ar 1501When there are two or more, two or more Ars 1501 are the same as or different from each other, * in the general formula (151) indicates the bonding position with the ring represented by the general formula (15X).)

[0618] · A compound represented by the general formula (16X) In one aspect of the organic EL element according to this embodiment, the first compound is a compound represented by the following general formula (16X).

[0619]

Chemical formula

[0620] (In the general formula (16X), R 1601 ~R 1614 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 )-represented group, -O-(R 904 )-represented group, -S-(R 905 )-represented group, a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, -C(=O)R 801 -represented group, -COOR 802 -represented group, a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, or a group represented by the general formula (161), provided that at least one of R 1601 ~R 1614 is a group represented by the general formula (161), when a plurality of groups represented by the general formula (161) are present, the plurality of groups represented by the general formula (161) are the same as or different from each other, L 1601 is a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms, Ar 1601 is a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, mx6 is 0, 1, 2, 3, 4 or 5, L 1601 when two or more are present, the two or more L 1601 are the same as or different from each other, Ar 1601 when two or more are present, the two or more Ar 1601 are the same as or different from each other, * in the general formula (161) indicates the bonding position with the ring represented by the general formula (16X).)

[0621] · Compound represented by general formula (1000B) In one aspect of the organic EL element according to the present embodiment, the first compound is a compound represented by the following general formula (1000B).

[0622]

Chemical formula

[0623] (In the general formula (1000B), X is an oxygen atom or a sulfur atom, R 10 ~R 19 one or more of the groups consisting of two or more adjacent ones among are bonded to each other to form a substituted or unsubstituted monocyclic ring, are bonded to each other to form a substituted or unsubstituted condensed ring, or are not bonded to each other, do not form the substituted or unsubstituted monocyclic ring, and do not form the substituted or unsubstituted condensed ring, and R 10 ~R 19 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 ) group represented by -O-(R 904 ) group represented by -S-(R 905 ) group represented by -N(R 906 )(R 907 ) group represented by a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, -C(=O)R 801 group represented by -COOR 802 group represented by a halogen atom, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, or a group represented by the general formula (110), provided that R 10 ~R19 At least one of them is a group represented by the general formula (110), when there are a plurality of groups represented by the general formula (110), the plurality of groups represented by the general formula (110) are the same as or different from each other, L 100 is a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms, mx is 1, 2, or 3, L 100 when two or more L's are present, the two or more L's 100 are the same as or different from each other, Ar 100 is a substituted or unsubstituted aryl group containing three or more rings, or a substituted or unsubstituted heterocyclic group containing two or more aromatic rings and one or more heterocyclic rings, Ar 100 does not contain an anthracene ring, Ar 100 when two or more Ar's are present, the two or more Ar's 100 are the same as or different from each other, * in the general formula (110) indicates the bonding position, in the first compound represented by the general formula (1000B), R 901 , R 902 , R 903 , R 904 , R 905 , R 906 , R 907 , R 801 and R 802 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, R 901 When there are a plurality of R's, the plurality of R's 901 are the same as or different from each other, R 902 When there are a plurality of R's, the plurality of R's 902 are the same as or different from each other, R 903 When there are a plurality of R's, the plurality of R's 903 are the same as or different from each other, R 904 When there are a plurality of R's, the plurality of R's 904 are the same as or different from each other, R 905 When there are a plurality of R's, the plurality of R's 905 are the same as or different from each other, R 906 When there are a plurality of R's, the plurality of R's 906 are the same as or different from each other, R 907 When there are a plurality of R's, the plurality of R's 907 are the same as or different from each other, R 801 When there are a plurality of R's, the plurality of R's 801 are the same as or different from each other, R 802 When there are a plurality of R's, the plurality of R's 802 are the same as or different from each other.)

[0624] In the general formula (1000B), X is preferably an oxygen atom.

[0625] The compound represented by the general formula (1000B) preferably has at least one group represented by the general formula (110) and is a compound represented by the following general formula (100).

[0626]

Chemical formula

[0627] (In the general formula (100), R 10 ~R19 is, independently of one another, R in the general formula (1000B) 10 ~R 19 and has the same meaning as, Ar 100 , L 100 and mx are, respectively, Ar in the general formula (110) 100 , L 100 and mx and have the same meaning. )

[0628] The compound represented by the general formula (1000B) is preferably a compound represented by the following general formula (101) or general formula (102).

[0629]

Chemical formula

[0630]

Chemical formula

[0631] (In the general formula (101) and general formula (102), R 10 ~R 19 is, independently of one another, R in the general formula (1000B) 10 ~R 19 and has the same meaning as, Ar 100 , L 100 and mx are, respectively, Ar in the general formula (110) 100 , L 100 and mx and have the same meaning. )

[0632] In the general formula (1000B), R that is not the group represented by the general formula (110) 10 ~R 19 is, independently of one another, preferably a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, or a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms.

[0633] In the general formula (1000B), R that is not the group represented by the general formula (110)10 ~R 19 is preferably a hydrogen atom.

[0634] In the general formula (1000B), L 100 is preferably a single bond or an arylene group containing three or fewer substituted or unsubstituted benzene rings.

[0635] In the general formula (1000B), L 100 is preferably not a substituted or unsubstituted anthrylene group.

[0636] In the general formula (1000B), L 100 is also preferably a single bond.

[0637] In the general formula (1000B), the group represented by -(L 100 ) mx - in the general formula (110) is also preferably a group represented by any of the following general formulas (111) to (120).

[0638]

Chemical formula

[0639]

Chemical formula

[0640] (* in the general formulas (111) to (120) indicates the bonding position.)

[0641] The group represented by -(L 100 ) mx - in the general formula (110) is preferably a group represented by the general formula (111) or (112).

[0642] In the general formula (1000B), Ar 100 is preferably an aryl group in which four or more substituted or unsubstituted benzene rings are condensed.

[0643] In the general formula (1000B), Ar 100 is preferably an aryl group formed by condensation of 4 substituted or unsubstituted benzene rings, or an aryl group formed by condensation of 5 substituted or unsubstituted benzene rings.

[0644] In the general formula (1000B), Ar 100 is preferably a group represented by the following general formula (1100), (1200), (1300), (1400), (1500), (1600), (1700) or (1800).

[0645]

Chemical formula

[0646]

Chemical formula

[0647]

Chemical formula

[0648]

Chemical formula

[0649] (In the general formula (1100), R 111 ~R 120 Among them, one is a bond, In the general formula (1200), R 1201 ~R 1212 Among them, one is a bond, In the general formula (1300), R 1301 ~R 1314 Among them, one is a bond, In the general formula (1400), R 1401 ~R 1414 Among them, one is a bond, In the general formula (1500), R 1501 ~R1514 Among them, one is a bonding hand, In the general formula (1600), R 1601 ~R 1612 Among them, one is a bonding hand, In the general formula (1700), R 1701 ~R 1710 Among them, one is a bonding hand, In the general formula (1800), R 1801 ~R 1812 Among them, one is a bonding hand, R that is not a bonding hand 111 ~R 120 , R that is not a bonding hand 1201 ~R 1212 , R that is not a bonding hand 1301 ~R 1314 , R that is not a bonding hand 1401 ~R 1414 , R that is not a bonding hand 1501 ~R 1514 , R that is not a bonding hand 1601 ~R 1612 , R that is not a bonding hand 1701 ~R 1710 , and R that is not a bonding hand 1801 ~R 1812 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 )-represented group, -O-(R 904 )-represented group, -S-(R 905 )-represented group, -N(R 906 )(R 907 )-represented group, A substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, -C(=O)R 801 a group represented by -COOR 802 a group represented by a halogen atom, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms.)

[0650] When the group represented by the general formula (1100) has R 111 as a bond, it is a group represented by the following general formula (1112), and when R 120 is a bond, it is a group represented by the following general formula (1113), and when R 119 is a bond, it is a group represented by the following general formula (1114).

[0651]

Chemical formula

[0652] (In the general formula (1112), general formula (1113) and general formula (1114), R 111 ~R 120 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 ) a group represented by -O-(R 904 ) a group represented by -S-(R 905a group represented by -N(R 906 )(R 907 ) represents a group, a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, -C(=O)R 801 represents a group, -COOR 802 represents a group, a halogen atom, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, In the general formulas (1112) to (1114), * indicates the bonding position.)

[0653] In the general formulas (1100), (1200), (1300), (1400), (1500), (1600), (1700) and (1800), R that is not a bond 111 ~R 120 , R that is not a bond 1201 ~R 1212 , R that is not a bond 1301 ~R 1314 , R that is not a bond 1401 ~R 1414 , R that is not a bond 1501 ~R 1514 , R that is not a bond 1601 ~R 1612 , R that is not a bond 1701 ~R 1710 , and R that is not a bond 1801 ~R 1812 are each independently preferably a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, or a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms.

[0654] In the general formulas (1100), (1200), (1300), (1400), (1500), (1600), (1700) and (1800), R that is not a bond 111 ~R 120, R which is not a linking group 1201 ~R 1212 , R which is not a linking group 1301 ~R 1314 , R which is not a linking group 1401 ~R 1414 , R which is not a linking group 1501 ~R 1514 , R which is not a linking group 1601 ~R 1612 , R which is not a linking group 1701 ~R 1710 , and R which is not a linking group 1801 ~R 1812 is preferably a hydrogen atom.

[0655] The compound represented by the general formula (1000B) preferably contains only one benzoxanthene ring in the molecule. The first compound is also preferably a compound in which the benzoxanthene ring in the general formula (100), general formula (101) and general formula (102) is replaced with a benzothioxanthene ring.

[0656] ·Compound represented by general formula (17X-1) In one aspect of the organic EL element according to the present embodiment, the first compound is a compound represented by the following general formula (17X-1).

[0657] [Chemical formula]

[0658] (In the general formula (17X-1), X 14 is an oxygen atom or a sulfur atom, R 1401 ~R 1404 One or more sets of two or more adjacent ones among are bonded to each other to form a substituted or unsubstituted monocyclic ring, are bonded to each other to form a substituted or unsubstituted condensed ring, or are not bonded to each other, R 1405 ~R 1410At least one set of two or more adjacent ones among them are bonded to each other to form a substituted or unsubstituted monocyclic ring, are bonded to each other to form a substituted or unsubstituted condensed ring, or are not bonded to each other, do not form the substituted or unsubstituted monocyclic ring and do not form the substituted or unsubstituted condensed ring, and R 1401 ~R 1410 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 )-represented group, -O-(R 904 )-represented group, -S-(R 905 )-represented group, a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, -C(=O)R 801 )-represented group, -COOR 802 )-represented group, a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, or a group represented by the general formula (171-1), provided that at least one of R 1401 ~R 1410 is a group represented by the general formula (171-1), When there are a plurality of groups represented by the general formula (171-1), the plurality of groups represented by the general formula (171-1) are the same as or different from each other. L 1701 is a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms, Ar 1701 is a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, mx7 is 0, 1, 2, 3, 4 or 5, L 1701 When two or more Ls are present, the two or more Ls 1701 are the same as or different from each other, Ar 1701 When two or more Ars are present, the two or more Ars 1701 are the same as or different from each other, R 901 ~R 905 、R 801 and R 802 are each independently the same as R 901 ~R 905 、R 801 and R 802 in the general formula (1000B), * in the general formula (171-1) indicates the bonding position with the ring represented by the general formula (17X-1).)

[0659]

Chemical formula

[0660] (In the general formula (17X-2), R 1401 ~R 1410 and X 14 are each independently the same as R 1401 ~R 1410 and X 14 in the general formula (17X-1), The group represented by the general formula (171-2) has the same meaning as the group represented by the general formula (171-1). In the general formula (171-2), L 1701 , Ar 1701 and mx7 are each independently the same as L 1701 , Ar 1701 and mx7 in the general formula (171-1), and when there are a plurality of groups represented by the general formula (171-2), the plurality of groups represented by the general formula (171-2) are the same as or different from each other, and * in the general formula (171-2) indicates the bonding position to the ring represented by the general formula (17X-2).)

[0661]

Chemical formula

[0662] (In the general formula (17X-3), R 1401 ~R 1410 and X 14 are each independently the same as R 1401 ~R 1410 and X 14 in the general formula (17X-1), and the group represented by the general formula (171-3) has the same meaning as the group represented by the general formula (171-1). In the general formula (171-3), L 1701 , Ar 1701 and mx7 are each independently the same as L 1701 , Ar 1701 and mx7 in the general formula (171-1), and when there are a plurality of groups represented by the general formula (171-3), the plurality of groups represented by the general formula (171-3) are the same as or different from each other, and * in the general formula (171-3) indicates the bonding position to the ring represented by the general formula (17X-3).)

[0663] In the general formulas (17X-1), (17X-2) and (17X-3), X 14is preferably an oxygen atom.

[0664] · A compound represented by the general formula (18) In one aspect of the organic EL element according to the present embodiment, the first compound is a compound represented by the following general formula (18).

[0665] [Chemical formula]

[0666] (In the general formula (18), X 18 is an oxygen atom or a sulfur atom, R 1801 ~R 1804 One or more sets of two or more adjacent ones among are bonded to each other to form a substituted or unsubstituted monocyclic ring, are bonded to each other to form a substituted or unsubstituted condensed ring, or do not bond to each other, R 1805 ~R 1808 One or more sets of two or more adjacent ones among are bonded to each other to form a substituted or unsubstituted monocyclic ring, are bonded to each other to form a substituted or unsubstituted condensed ring, or do not bond to each other, The R that does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring 1801 ~R 1808 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R901 )(R 902 )(R 903 )-represented group, -O-(R 904 )-represented group, -S-(R 905 )-represented group, a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, -C(=O)R 801 )-represented group, -COOR 802 )-represented group, a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, or a group represented by the general formula (18X), provided that at least one of R 1801 ~R 1808 is a group represented by the general formula (18X), when there are a plurality of groups represented by the general formula (18X), the plurality of groups represented by the general formula (18X) are the same as or different from each other, L 1801 is a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a divalent heterocyclic group having 5 to 50 ring-forming atoms which is substituted or unsubstituted, Ar 1801 is a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, mx8 is 0, 1, 2, 3, 4 or 5, L 1801 when there are two or more L 1801 the two or more L Ar 1801 when there are two or more Ar 1801 the two or more Ar R 901 ~R 905 、R 801 and R 802 are each independently R in the general formula (1000B) 901 ~R 905 、R 801 and R 802 and have the same meaning as, * in the general formula (18X) indicates the bonding position to the ring represented by the general formula (18).)

[0667] In the general formula (18), X 18 is preferably an oxygen atom.

[0668] In the first compound, the groups described as "substituted or unsubstituted" are preferably all "unsubstituted" groups.

[0669] In the organic EL element according to this embodiment, the second host material has a linking structure containing a benzene ring and a naphthalene ring linked by a single bond in the molecule, and a monocyclic or condensed ring is further condensed or not condensed on the benzene ring and the naphthalene ring in the linking structure, respectively, and it is also preferable that the benzene ring and the naphthalene ring in the linking structure are further linked by crosslinking at at least one part other than the single bond. Since the second host material has a linking structure including such crosslinking, suppression of chromaticity deterioration of the organic EL element can be expected. In this case, the second host material only needs to have, as a minimum unit, a linking structure (which may be referred to as a benzene-naphthalene linking structure) containing a benzene ring and a naphthalene ring linked by a single bond in the molecule. The benzene ring may further have a monocyclic or condensed ring fused thereto, or the naphthalene ring may further have a monocyclic or condensed ring fused thereto. For example, even when the second host material has, in the molecule, a linking structure (which may be referred to as a naphthalene-naphthalene linking structure) containing naphthalene rings linked by a single bond, such as represented by the following formula (X3), formula (X4), or formula (X5), since one of the naphthalene rings contains a benzene ring, it contains a benzene-naphthalene linking structure.

[0670] [Chemical formula]

[0671] In the organic EL element according to this embodiment, it is also preferable that the crosslink contains a double bond. That is, it is also preferable that the benzene ring and the naphthalene ring have a structure in which they are further linked by a crosslinking structure containing a double bond in a portion other than a single bond.

[0672] When the benzene ring and the naphthalene ring in the benzene-naphthalene linking structure are further linked by a crosslink in at least one portion other than a single bond, for example, in the case of the above formula (X1), it becomes a linking structure (condensed ring) represented by the following formula (X11), and in the case of the above formula (X3), it becomes a linking structure (condensed ring) represented by the following formula (X31). When the benzene ring and the naphthalene ring in the benzene-naphthalene linking structure are further linked by a crosslink containing a double bond in a portion other than a single bond, for example, in the case of the above formula (X1), it becomes a linking structure (condensed ring) represented by the following formula (X12), in the case of the above formula (X2), it becomes a linking structure (condensed ring) represented by the following formula (X21) or formula (X22), in the case of the above formula (X4), it becomes a linking structure (condensed ring) represented by the following formula (X41), and in the case of the above formula (X5), it becomes a linking structure (condensed ring) represented by the following formula (X51). When the benzene ring and the naphthalene ring in the benzene-naphthalene linkage structure are further linked by a bridge containing a heteroatom (for example, an oxygen atom) in at least one part other than a single bond, for example, in the case of the above formula (X1), it becomes a linkage structure (condensed ring) represented by the following formula (X13).

[0673] [Chemical formula]

[0674] In the organic EL element according to the present embodiment, it is also preferable that the second host material has a biphenyl structure in which a first benzene ring and a second benzene ring are linked by a single bond in the molecule, and the first benzene ring and the second benzene ring in the biphenyl structure are further linked by a bridge in at least one part other than the single bond.

[0675] In the organic EL element according to the present embodiment, it is also preferable that the first benzene ring and the second benzene ring in the biphenyl structure are further linked by the bridge in one part other than the single bond. Since the second host material has a biphenyl structure including such a bridge, suppression of color deterioration of the organic EL element can be expected.

[0676] In the organic EL element according to the present embodiment, it is also preferable that the bridge contains a double bond. In the organic EL element according to the present embodiment, it is also preferable that the bridge does not contain a double bond.

[0677] It is also preferable that the first benzene ring and the second benzene ring in the biphenyl structure are further linked by the bridge in two parts other than the single bond.

[0678] In the organic EL element according to this embodiment, it is also preferable that the first benzene ring and the second benzene ring in the biphenyl structure are further connected by the crosslinking in two parts other than the single bond, and the crosslinking does not contain a double bond. Since the second host material has a biphenyl structure including such crosslinking, suppression of color deterioration of the organic EL element can be expected.

[0679] For example, when the first benzene ring and the second benzene ring in the biphenyl structure represented by the following formula (BP1) are further connected by crosslinking in at least one part other than the single bond, the biphenyl structure becomes a connected structure (condensed ring) such as the following formulas (BP11) to (BP15).

[0680]

Chemical formula

[0681] The formula (BP11) is a structure connected by a crosslinking that does not contain a double bond in one part other than the single bond. The formula (BP12) is a structure connected by a crosslinking that contains a double bond in one part other than the single bond. The formula (BP13) is a structure connected by crosslinkings that do not contain double bonds in two parts other than the single bond. The formula (BP14) is a structure connected by a crosslinking that does not contain a double bond in one of the two parts other than the single bond and a crosslinking that contains a double bond in the other of the two parts other than the single bond. The formula (BP15) is a structure connected by crosslinkings that contain double bonds in two parts other than the single bond.

[0682] In the first compound, it is preferable that all the groups described as "substituted or unsubstituted" are "unsubstituted" groups.

[0683] (Production method of the first compound) The first compound that can be used in the organic EL element according to this embodiment can be produced by a known method. Further, the first compound can also be produced by following a known method and using known alternative reactions and raw materials adapted to the target product.

[0684] (Specific examples of the first compound) Specific examples of the first compound that can be used in the organic EL element according to this embodiment include the following compounds. However, the present invention is not limited to these specific examples of the first compound. In this specification, in the specific examples of the compound, D represents a deuterium atom, Me represents a methyl group, and tBu represents a tert-butyl group.

[0685]

Chemical formula

[0686]

Chemical formula

[0687]

Chemical formula

[0688]

Chemical formula

[0689]

Chemical formula

[0690]

Chemical formula

[0691]

Chemical formula

[0692] [Chemistry]

[0693] [Chemistry]

[0694] [Chemistry]

[0695] [Chemistry]

[0696] [Chemistry]

[0697] [Chemistry]

[0698] [Chemistry]

[0699] [Chemistry]

[0700] [Chemistry]

[0701] [Chemistry]

[0702] (Luminescent compound) In one aspect of the organic EL element according to the present embodiment, the light-emitting compound contained in the first light-emitting layer is the first light-emitting compound, and the light-emitting compound contained in the second light-emitting layer is the second light-emitting compound.

[0703] (Compound represented by general formula (5)) In one aspect of the organic EL element according to the present embodiment, the light-emitting compound is a compound represented by the following general formula (5).

[0704] [Chemical formula]

[0705] (In the general formula (5), R 501 ~R 507 and R 511 ~R 517 One or more sets of two or more adjacent ones among are bonded to each other to form a substituted or unsubstituted monocyclic ring, are bonded to each other to form a substituted or unsubstituted condensed ring, or are not bonded to each other, do not form the substituted or unsubstituted monocyclic ring, and do not form the substituted or unsubstituted condensed ring, and R 501 ~R 507 and R 511 ~R 517 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 )-represented group, -O-(R 904 )-represented group, -S-(R 905a group represented by -N(R 906 )(R 907 ) or a group represented by a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms. R 521 and R 522 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 ) or a group represented by -O-(R 904 ) or a group represented by -S-(R 905 ) or a group represented by -N(R 906 )(R 907 ) or a group represented by a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms.)

[0706] In the luminescent compound, R 901 , R 902 , R 903 , R 904 , R 905 , R 906 and R 907 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, A cycloalkyl group having 3 to 50 ring-forming carbon atoms, which may be substituted or unsubstituted, An aryl group having 6 to 50 ring-forming carbon atoms, which may be substituted or unsubstituted, or A heterocyclic group having 5 to 50 ring-forming atoms, which may be substituted or unsubstituted, Preferably, an alkyl group having 1 to 50 carbon atoms, which may be substituted or unsubstituted, or An aryl group having 6 to 50 ring-forming carbon atoms, which may be substituted or unsubstituted, R 901 When a plurality of R's exist, the plurality of R's 901 are the same as or different from each other, R 902 When a plurality of R's exist, the plurality of R's 902 are the same as or different from each other, R 903 When a plurality of R's exist, the plurality of R's 903 are the same as or different from each other, R 904 When a plurality of R's exist, the plurality of R's 904 are the same as or different from each other, R 905 When a plurality of R's exist, the plurality of R's 905 are the same as or different from each other, R 906 When a plurality of R's exist, the plurality of R's 906 are the same as or different from each other, R 907 When a plurality of R's exist, the plurality of R's 907 are the same as or different from each other.

[0707] "One set consisting of two or more adjacent ones among "R 501 ~R 507 and R 511 ~R 517 ", for example, a set consisting of R 501 and R 502 , a set consisting of R 502 and R 503 , a set consisting of R 503 and R 504 , a set consisting of R 505 and R 506 , a set consisting of R 506 and R 507A set consisting of, R 501 and R 502 and R 503 It is a combination such as a set consisting of.

[0708] In one embodiment, the compound represented by the general formula (5) is a compound represented by the following general formula (52).

[0709]

Chemical formula

[0710] (In the general formula (52), R 531 ~R 534 and R 541 ~R 544 One or more sets consisting of two or more adjacent ones among them are bonded to each other to form a substituted or unsubstituted monocyclic ring, bonded to each other to form a substituted or unsubstituted condensed ring, or not bonded to each other, not forming the substituted or unsubstituted monocyclic ring and not forming the substituted or unsubstituted condensed ring, R 531 ~R 534 , R 541 ~R 544 , and R 551 and R 552 are each independently a hydrogen atom, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, R 561 ~R 564 are each independently a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms.)

[0711] (Compound represented by general formula (6)) In one aspect of the organic EL element according to the present embodiment, the light-emitting compound is a compound represented by the following general formula (6).

[0712] [Chemical formula]

[0713] (In the general formula (6), ring a, ring b, and ring c are each independently a substituted or unsubstituted aromatic hydrocarbon ring having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic ring having 5 to 50 ring-forming atoms, R 601 and R 602 are each independently bonded to ring a, ring b, or ring c to form a substituted or unsubstituted heterocyclic ring, or do not form a substituted or unsubstituted heterocyclic ring, R that does not form the substituted or unsubstituted heterocyclic ring 601 and R 602 are each independently a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms.)

[0714] In one aspect of the organic EL element according to the present embodiment, ring a, ring b, and ring c are rings (substituted or unsubstituted aromatic hydrocarbon rings having 6 to 50 ring-forming carbon atoms, or substituted or unsubstituted heterocyclic rings having 5 to 50 ring-forming atoms) that are condensed to the central condensed bicyclic structure of the general formula (6) composed of a boron atom and two nitrogen atoms.

[0715] The "aromatic hydrocarbon ring" of ring a, ring b, and ring c has the same structure as a compound obtained by introducing a hydrogen atom into an "aryl group". The "aromatic hydrocarbon ring" of ring a contains three carbon atoms on the central fused bicyclic structure of the general formula (6) as ring-forming atoms. The "aromatic hydrocarbon ring" of ring b and ring c contains two carbon atoms on the central fused bicyclic structure of the general formula (6) as ring-forming atoms.

[0716] Specific examples of the "substituted or unsubstituted aromatic hydrocarbon ring having 6 to 50 ring-forming carbon atoms" include compounds obtained by introducing a hydrogen atom into the "aryl group" described in Specific Example Group G1 and the like. The "heterocyclic ring" of ring a, ring b, and ring c has the same structure as a compound obtained by introducing a hydrogen atom into the above-described "heterocyclic group". The "heterocyclic ring" of ring a contains three carbon atoms on the central fused bicyclic structure of the general formula (6) as ring-forming atoms. The "heterocyclic ring" of ring b and ring c contains two carbon atoms on the central fused bicyclic structure of the general formula (6) as ring-forming atoms. Specific examples of the "substituted or unsubstituted heterocyclic ring having 5 to 50 ring-forming atoms" include compounds obtained by introducing a hydrogen atom into the "heterocyclic group" described in Specific Example Group G2 and the like.

[0717] R 601 and R 602 may each independently combine with ring a, ring b, or ring c to form a substituted or unsubstituted heterocyclic ring. The heterocyclic ring in this case contains a nitrogen atom on the central fused bicyclic structure of the general formula (6). The heterocyclic ring in this case may contain a heteroatom other than the nitrogen atom. When R 601 and R 602 combine with ring a, ring b, or ring c, specifically, it means that the atoms constituting ring a, ring b, or ring c are bonded to the atoms constituting R 601 and R 602 . For example, R 601 may combine with ring a to form a nitrogen-containing heterocyclic ring of bicyclic condensation (or tricyclic condensation or higher) in which the ring containing R 601 is condensed with ring a. Specific examples of the nitrogen-containing heterocyclic ring include compounds corresponding to the heterocyclic groups of bicyclic condensation or higher containing nitrogen in Specific Example Group G2 and the like. R 601 When R is bonded to the b-ring, 602 when R is bonded to the a-ring, and 602 when R is bonded to the c-ring, it is the same as above. R 601 and R 602 may each independently not be bonded to the a-ring, b-ring or c-ring.

[0718] In one embodiment, the a-ring, b-ring and c-ring in the general formula (6) are each independently a substituted or unsubstituted aromatic hydrocarbon ring having 6 to 50 ring-forming carbon atoms. In one embodiment, the a-ring, b-ring and c-ring in the general formula (6) are each independently a substituted or unsubstituted benzene ring or naphthalene ring.

[0719] In one embodiment, R in the general formula (6) 601 and R 602 are each independently a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, preferably a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms.

[0720] In one embodiment, the compound represented by the general formula (6) is a compound represented by the following general formula (62).

[0721]

Chemical formula

[0722] (In the general formula (62), R 601A is bonded to one or more selected from the group consisting of R 611 and R 621 to form a substituted or unsubstituted heterocyclic ring, or does not form a substituted or unsubstituted heterocyclic ring, R 602A is R 613 and R614 combines with one or more selected from the group consisting of to form a substituted or unsubstituted heterocyclic ring, or does not form a substituted or unsubstituted heterocyclic ring, R that does not form the substituted or unsubstituted heterocyclic ring 601A and R 602A are each independently a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, R 611 ~R 621 one or more sets of two or more adjacent ones among combine with each other to form a substituted or unsubstituted monocyclic ring, combine with each other to form a substituted or unsubstituted condensed ring, or do not combine with each other, R that does not form the substituted or unsubstituted heterocyclic ring, does not form the substituted or unsubstituted monocyclic ring, and does not form the substituted or unsubstituted condensed ring 611 ~R 621 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 ) group represented by, -O-(R 904 ) group represented by, -S-(R 905 ) group represented by, -N(R 906 )(R 907 )-represented group, a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms.) (In the general formula (62), R 901 , R 902 , R 903 , R 904 , R 905 , R 906 and R 907 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, and when there are a plurality of R 901 , the plurality of R 901 are the same as or different from each other, when there are a plurality of R 902 , the plurality of R 902 are the same as or different from each other, when there are a plurality of R 903 , the plurality of R 903 are the same as or different from each other, when there are a plurality of R 904 , the plurality of R 904 are the same as or different from each other, when there are a plurality of R 905 , the plurality of R 905 are the same as or different from each other, when there are a plurality of R 906 , the plurality of R 906 are the same as or different from each other, when there are a plurality of R 907 , the plurality of R 907are the same as or different from each other.)

[0723] R in the general formula (62) 601A and R 602A are each a group corresponding to R 601 and R 602 in the general formula (6). For example, R 601A and R 611 may combine to form a nitrogen-containing heterocyclic ring with a benzene ring corresponding to the a-ring, where a ring containing these is condensed, which is a bicyclic condensation (or tricyclic condensation or higher). Specific examples of the nitrogen-containing heterocyclic ring include, among the specific example group G2, compounds corresponding to heterocyclic groups with two or more rings condensed and containing nitrogen, etc. When R 601A and R 621 combine, when R 602A and R 613 combine, and when R 602A and R 614 combine, it is the same as above.

[0724] R 611 ~R 621 One or more sets of two or more adjacent ones among them may combine with each other to form a substituted or unsubstituted monocyclic ring, or may combine with each other to form a substituted or unsubstituted condensed ring. For example, R 611 and R 612 may combine to form a structure in which a benzene ring, an indole ring, a pyrrole ring, a benzofuran ring, or a benzothiophene ring, etc. is condensed with respect to the 6-membered ring to which these are attached, and the formed condensed ring becomes a naphthalene ring, a carbazole ring, an indole ring, a dibenzofuran ring, or a dibenzothiophene ring.

[0725] In one embodiment, the compound represented by the general formula (6) is a compound represented by the following general formula (42-2).

[0726]

Chemical formula

[0727] (In the general formula (42-2), R 611 ~R 617 、R 601A and R 602A are each independently the same as R 611 ~R 617 、R 601A and R 602A in the general formula (62), X 4 is an oxygen atom or a sulfur atom, R 701 ~R 704 Among them, one or more sets of two or more adjacent ones are bonded to each other to form a substituted or unsubstituted monocyclic ring, bonded to each other to form a substituted or unsubstituted condensed ring, or not bonded to each other, neither forming the substituted or unsubstituted monocyclic ring nor forming the substituted or unsubstituted condensed ring, and R 701 ~R 704 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 ) group represented by, -O-(R 904 ) group represented by, -S-(R 905 ) group represented by, -N(R 906 )(R 907 ) group represented by, a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, In the general formula (42-2), R 901 , R 902 , R 903 , R 904 , R 905 , R 906 and R 907 are each independently the same as R 901 , R 902 , R 903 , R 904 , R 905 , R 906 and R 907 in the general formula (62).)

[0728] (Specific examples of the light-emitting compound) Specific examples of the light-emitting compound are described below, but these are merely illustrative, and the light-emitting compound is not limited to the following specific examples.

[0729]

Chemical formula

[0730] <Electron transport band> In one aspect of the organic EL element according to the present embodiment, an electron transport layer is disposed between the light-emitting layer and the cathode.

[0731] (Electron transport layer) In one aspect of the organic EL element according to the present embodiment, the electron transport band includes at least one electron transport layer, and at least one electron transport layer in the electron transport band contains a nitrogen-containing compound.

[0732] In one aspect of the organic EL element according to the present embodiment, the nitrogen-containing compound has at least one of a 5-membered ring containing a nitrogen atom and a 6-membered ring containing a nitrogen atom.

[0733] In an organic EL element according to one aspect of the present embodiment, at least one electron transport layer in the electron transport band contains, as a nitrogen-containing compound, at least one compound selected from the group consisting of an imidazole derivative, a benzimidazole derivative, an azine derivative, a carbazole derivative, and a phenanthroline derivative.

[0734] (Phenanthroline derivative) In one aspect of the organic EL element according to the present embodiment, at least one electron transport layer in the electron transport band contains a phenanthroline derivative as a nitrogen-containing compound. In one aspect of the organic EL element according to the present embodiment, the phenanthroline derivative (phenanthroline compound) contained in the electron transport layer has at least one group represented by the following general formula (21) and is a compound represented by the following general formula (20).

[0735] [Chemical formula]

[0736] (In the general formula (20), X 21 ~X 28 are each independently a nitrogen atom, CR 21 , or a carbon atom bonded to the group represented by the general formula (21), X 21 ~X 28 at least one of which is a carbon atom bonded to the group represented by the general formula (21), when a plurality of groups represented by the general formula (21) are present, the plurality of groups represented by the general formula (21) are the same as or different from each other, a plurality of R 21 among which at least one set of two or more adjacent ones forms a substituted or unsubstituted monocyclic ring by bonding to each other, a substituted or unsubstituted condensed ring by bonding to each other, or do not bond to each other, R which does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring 21 is, independently of each other, a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 ) group represented by, -O-(R 904 ) group represented by, -S-(R 905 ) group represented by, -N(R 906 )(R 907 ) group represented by, a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, -C(=O)R 931 ) group represented by, -COOR 932 ) group represented by, -S(=O) 2 R 933 ) group represented by, -B(R 934 )(R 935 ) group represented by, -P(=O)(R 936 )(R 937 ) group represented by, a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms.) (In the general formula (21), Ar 2 is A substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, p is 1, 2, 3, 4 or 5, Ar 2 when two or more Ar are present, the two or more Ar 2 are the same as or different from each other, L 2 is a single bond or a linking group, L as a linking group 2 is a substituted or unsubstituted linear, branched or cyclic polyvalent aliphatic hydrocarbon group having 1 to 50 carbon atoms, a substituted or unsubstituted polyvalent aromatic hydrocarbon group having 6 to 50 ring-forming carbon atoms, a substituted or unsubstituted polyvalent heterocyclic group having 5 to 50 ring-forming atoms, or a polyvalent multi-linking group formed by bonding two or three groups selected from the polyvalent aromatic hydrocarbon ring group and the polyvalent heterocyclic group, L as the multi-linking group 2 the aromatic hydrocarbon ring group and the heterocyclic group constituting the multi-linking group are the same as or different from each other, and adjacent groups are bonded to each other to form a ring or are not bonded to each other, Ar 2 and L as a linking group 2 are bonded to each other to form a ring or are not bonded to each other, L as a linking group 2 and, L 2 X adjacent to the carbon atom bonded to L 21 ~X 28 any one of the carbon atoms or CR 21 the R of 21 are bonded to each other to form a ring or are not bonded to each other, * in the general formula (21) indicates the bonding position to the ring represented by the general formula (20).) (In the phenanthroline compound, R 901 , R 902 , R 903 , R 904 , R 905 , R 906 , R907 , R 931 , R 932 , R 933 , R 934 , R 935 , R 936 and R 937 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, R 901 When there are a plurality of R's, the plurality of R's 901 are the same as or different from each other, R 902 When there are a plurality of R's, the plurality of R's 902 are the same as or different from each other, R 903 When there are a plurality of R's, the plurality of R's 903 are the same as or different from each other, R 904 When there are a plurality of R's, the plurality of R's 904 are the same as or different from each other, R 905 When there are a plurality of R's, the plurality of R's 905 are the same as or different from each other, R 906 When there are a plurality of R's, the plurality of R's 906 are the same as or different from each other, R 907 When there are a plurality of R's, the plurality of R's 907 are the same as or different from each other, R 931 When there are a plurality of R's, the plurality of R's 931 are the same as or different from each other, R 932 When there are a plurality of R's, the plurality of R's 932 are the same as or different from each other, R 933 When there are a plurality of R's, the plurality of R's 933are the same as or different from each other, R 934 when a plurality of R's exist, the plurality of R's 934 are the same as or different from each other, R 935 when a plurality of R's exist, the plurality of R's 935 are the same as or different from each other, R 936 when a plurality of R's exist, the plurality of R's 936 are the same as or different from each other, R 937 when a plurality of R's exist, the plurality of R's 937 are the same as or different from each other.)

[0737] In the present specification, a group represented by -O-(R 904 ) is a hydroxy group when R 904 is a hydrogen atom. In the present specification, a group represented by -S-(R 905 ) is a thiol group when R 905 is a hydrogen atom. In the present specification, a group represented by -S(=O) 2 R 933 is a substituted sulfo group when R 933 is a substituent. In the present specification, a group represented by -B(R 934 )(R 935 ) is a substituted boryl group when R 934 and R 935 are substituents. In the present specification, a group represented by -P(=O)(R 936 )(R 937 ) is a substituted phosphine oxide group when R 936 and R 937 are substituents, and is an aryl phosphoryl group when R 936 and R 937 are aryl groups.

[0738] The number of carbon atoms in the "unsubstituted linear, branched or cyclic polyvalent aliphatic hydrocarbon group" described in this specification is 1 to 50, preferably 1 to 20, more preferably 1 to 6, unless otherwise specified in this specification. The number of ring-forming carbon atoms in the "unsubstituted polyvalent aromatic hydrocarbon group" described in this specification is 6 to 50, preferably 6 to 30, more preferably 6 to 18, unless otherwise specified in this specification. The number of ring-forming atoms in the "unsubstituted polyvalent heterocyclic group" described in this specification is 5 to 50, preferably 5 to 30, more preferably 5 to 18, unless otherwise specified in this specification.

[0739] In one embodiment, Ar in the general formula (21) 2 The heterocyclic group having 5 to 50 ring-forming atoms in formula (1) contains a substituted or unsubstituted group derived from the ring structure represented by the general formula (20).

[0740] In one embodiment, X in the general formula (20) 21 and X 28 are carbon atoms that are bonded to the group represented by the general formula (21). In one embodiment, one of X 21 and X 28 in the general formula (20) is a carbon atom that is bonded to the group represented by the general formula (21), and the other of X 21 and X 28 is a carbon atom that is bonded to a hydrogen atom.

[0741] In one embodiment, X 21 to X 28 in the general formula (20) are each independently CR 21 or a carbon atom that is bonded to the group represented by the general formula (21). In one embodiment, among X 21 to X 28 in the general formula (20), other than the carbon atom that is bonded to the group represented by the general formula (21), is CR 21 That is, in one embodiment, the compound represented by the general formula (20) is a 1,10-phenanthroline derivative.

[0742] In one embodiment, Ar in the general formula (21) 2 is a substituted or unsubstituted condensed aromatic hydrocarbon group having 8 to 20 ring-forming carbon atoms.

[0743] In one embodiment, the condensed aromatic hydrocarbon group having 8 to 20 ring-forming carbon atoms is, for example, a group derived from any aromatic hydrocarbon selected from the group consisting of naphthalene, anthracene, acephenanthrylene, aceanthrylene, benzoanthracene, triphenylene, pyrene, chrysene, naphthacene, fluorene, phenanthrene, fluoranthene, and benzofluoranthene.

[0744] In one embodiment, Ar in the general formula (21) 2 is a substituted or unsubstituted anthryl group.

[0745] In one embodiment, Ar in the general formula (21) 2 is a substituted or unsubstituted heterocyclic group having 5 to 40 ring-forming carbon atoms.

[0746] In one embodiment, Ar in the general formula (21) 2 is a substituted or unsubstituted group derived from the ring structure represented by the general formula (20).

[0747] In one embodiment, Ar in the general formula (21) 2 is a group represented by the following general formula (23).

[0748] [Chemical formula]

[0749] (In the general formula (23), X 21 ~X 28 are each independently a nitrogen atom, CR 21 , the group represented by the general formula (21), or L 22 or L 23is a carbon atom that binds to, L 21 is a linking group, and L as a linking group 21 is a substituted or unsubstituted linear, branched or cyclic trivalent aliphatic hydrocarbon group having 1 to 50 carbon atoms, a substituted or unsubstituted trivalent aromatic hydrocarbon group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted trivalent heterocyclic group having 5 to 50 ring-forming atoms, L 22 and L 23 are each independently a single bond or a linking group, and L as a linking group 22 and L 23 are each independently a substituted or unsubstituted linear, branched or cyclic divalent aliphatic hydrocarbon group having 1 to 50 carbon atoms, a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms.)

[0750] In the general formula of the phenanthroline compound, X 21 When there are a plurality of X, the plurality of X 21 are the same as or different from each other, X 22 When there are a plurality of X, the plurality of X 22 are the same as or different from each other, X 23 When there are a plurality of X, the plurality of X 23 are the same as or different from each other, X 24 When there are a plurality of X, the plurality of X 24 are the same as or different from each other, X 25 When there are a plurality of X, the plurality of X 25 are the same as or different from each other, X 26 When there are a plurality of X, the plurality of X 26 are the same as or different from each other, X 27 When there are a plurality of X, the plurality of X 27 are the same as or different from each other, X 28 When there are a plurality of X, the plurality of X28 are identical to or different from each other.

[0751] In one embodiment, X in the general formula (23) 21 ~X 28 are each independently a nitrogen atom, CR 21 , or L 22 or L 23 and is preferably a carbon atom bonded to L 21 , or L 22 or L 23 and is more preferably a carbon atom bonded to L

[0752] In one embodiment, the phenanthroline compound is a compound represented by the following general formula (24).

[0753]

Chemical formula

[0754] (In the general formula (24), a plurality of R 21 are each independently synonymous with R in the general formula (20) 21 , a plurality of R 22 are each independently synonymous with R in the general formula (20) 21 , L 2 is synonymous with L in the general formula (21) 2 , p is 1, 2, 3, 4 or 5, a plurality of R 22 and L 2 are bonded to any carbon atom from the 1st to the 10th position of the anthracene ring.)

[0755] In one embodiment, the phenanthroline compound is a compound represented by the following general formula (24A).

[0756]

Chemical formula

[0757] (In the general formula (24A), a plurality of R 21 are each independently the R in the general formula (20) 21 and have the same meaning, a plurality of R 22 are each independently the R in the general formula (20) 21 and have the same meaning, L 2 is the L in the general formula (21) 2 and has the same meaning.)

[0758] In one embodiment, the phenanthroline compound is a compound represented by the following general formula (24B).

[0759]

Chemical formula

[0760] (In the general formula (24B), a plurality of R 21 are each independently the R in the general formula (20) 21 and have the same meaning, a plurality of R 22 are each independently the R in the general formula (20) 21 and have the same meaning, L 2 is the L in the general formula (21) 2 and has the same meaning.)

[0761] In one embodiment, the phenanthroline compound is a compound represented by the following general formula (25).

[0762]

Chemical formula

[0763] (In the general formula (25), a plurality of R 21 are each independently the R in the general formula (20)21 is synonymous with, a plurality of R 22 each independently is R in the general formula (20) 21 is synonymous with, L 2 is L in the general formula (21) 2 is synonymous with, p is 1, 2, 3, 4 or 5, a plurality of R 22 and L 2 are bonded to any carbon atom from the 2nd to the 9th position of the phenanthroline ring.)

[0764] In one embodiment, the phenanthroline compound is a compound represented by the following general formula (25A).

[0765]

Chemical formula

[0766] (In the general formula (25A), a plurality of R 21 each independently is R in the general formula (20) 21 is synonymous with, a plurality of R 22 each independently is R in the general formula (20) 21 is synonymous with, L 2 is L in the general formula (21) 2 is synonymous with.)

[0767] In one embodiment, L in the general formulas (24), (24A), (24B), (25) and (25A) 2 is a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms.)

[0768] In one embodiment, the phenanthroline compound is a compound represented by the following general formula (25B).

[0769] [Chemical formula]

[0770] (In the general formula (25B), a plurality of Rs 21 are each independently the same as R in the general formula (20), 21 and a plurality of Rs 22 are each independently the same as R in the general formula (20), 21 and L 3 is a linking group, and L as a linking group 3 is a substituted or unsubstituted linear, branched or cyclic polyvalent aliphatic hydrocarbon group having 1 to 50 carbon atoms, a substituted or unsubstituted polyvalent amino group, a substituted or unsubstituted polyvalent aromatic hydrocarbon ring group having 6 to 50 ring-forming carbon atoms, a substituted or unsubstituted polyvalent heterocyclic group having 5 to 50 ring-forming atoms, or a polyvalent multiple linking group formed by bonding two or three groups selected from the polyvalent aromatic hydrocarbon ring group and the polyvalent heterocyclic group, In the multiple linking group L 3 the aromatic hydrocarbon ring group and the heterocyclic group constituting it are the same as or different from each other, and adjacent groups are bonded to each other to form a ring, or are not bonded to each other, p is 1, 2, 3, 4 or 5, a plurality of Rs 22 and L 3 are bonded to any carbon atom from the 1st to the 10th of the phenanthrene ring.)

[0771] In one embodiment, the phenanthroline compound is a compound represented by the following general formula (25C).

[0772] [Chemical formula]

[0773] (In the general formula (25C), a plurality of Rs 21 are each independently the R in the general formula (20) 21 and have the same meaning, R 221 ~R 230 Among them, one is a single bond that binds to L 3 and Rs that are not single bonds that bind to L 3 ~R 221 ~R 230 are each independently the R in the general formula (20) 21 and have the same meaning, L 3 is a linking group, and L as a linking group 3 has the same meaning as L as the linking group in the general formula (25B) 3 and have the same meaning, p is 1, 2, 3, 4 or 5.)

[0774] In one embodiment, the phenanthroline compound is a compound represented by the following general formula (25D).

[0775]

Chemical formula

[0776] (In the general formula (25D), a plurality of Rs 21 are each independently the R in the general formula (20) 21 and have the same meaning, R 221 ~R 232 Among them, one is a single bond that binds to L 3 and Rs that are not single bonds that bind to L 3 ~R 221 ~R 232 are each independently the R in the general formula (20) 21 and have the same meaning, L 3 is a linking group, and L as a linking group 3 has the same meaning as L as the linking group in the general formula (25B) 3 and have the same meaning, p is 1, 2, 3, 4, or 5.)

[0777] In one embodiment, the phenanthroline compound is a compound represented by the following general formula (25E).

[0778] [Chemical formula]

[0779] (In the general formula (25E), a plurality of Rs 21 are each independently the same as R in the general formula (20), 21 and one of R 221 ~R 230 is a single bond that binds to L 3 and Rs 3 that are not single bonds binding to L 221 ~R 230 are each independently the same as R in the general formula (20), 21 and L 3 is a linking group, and L as a linking group 3 is the same as L as a linking group in the general formula (25B), 3 and p is 1, 2, 3, 4, or 5.)

[0780] L in the general formulas (25B), (25C), (25D), and (25E) 3 is preferably a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms.

[0781] (Method for producing a phenanthroline compound) The phenanthroline compound can be produced by a known method. Also, the phenanthroline compound can be produced by following a known method and using known alternative reactions and raw materials according to the target product.

[0782] (Azine derivative) In one aspect of the organic EL element according to the present embodiment, at least one electron transport layer in the electron transport band contains an azine derivative as a nitrogen-containing compound. In one aspect of the organic EL element according to the present embodiment, the azine derivative contained in the electron transport layer is a compound represented by the following general formula (E42).

[0783] [Chemical formula]

[0784] (In the general formula (E42), X 401 ~X 403 are each independently CR 4204 or a nitrogen atom, X 401 ~X 403 at least one of which is a nitrogen atom, R 4204 When two or more Rs are present, the two or more Rs 4204 are the same as or different from each other, R 4201 ~R 4204 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 ) group represented by -O-(R 904 ) group represented by -S-(R 905 ) group represented by -N(R 906 )(R 907 ) group represented by a halogen atom, a cyano group, a nitro group, A substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms.) (In the azine derivative, R 901 ~R 907 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, R 901 When there are a plurality of R 901 are the same as or different from each other, R 902 When there are a plurality of R 902 are the same as or different from each other, R 903 When there are a plurality of R 903 are the same as or different from each other, R 904 When there are a plurality of R 904 are the same as or different from each other, R 905 When there are a plurality of R 905 are the same as or different from each other, R 906 When there are a plurality of R 906 are the same as or different from each other, R 907 When there are a plurality of R 907 are the same as or different from each other.)

[0785] In one aspect of the organic EL element according to the present embodiment, the azine derivative contained in the electron transport layer is a compound represented by the following general formula (E421).

[0786]

Chemical formula

[0787] (In the general formula (E421), X 401 ~X 403 、R 4201 and R 4202 are each independently X 401 ~X 403 、R 4201 and R 4202 in the general formula (E42), having the same meaning as, n4 is 1, 2, or 3, L 421 is a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, a trivalent group or a tetravalent group derived from the arylene group, a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms, a trivalent group or a tetravalent group derived from the divalent heterocyclic group, or a divalent group formed by bonding of two groups selected from the group consisting of a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms and a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms, a trivalent group or a tetravalent group derived from the divalent group, Ar 421 is a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, when n4 is 2 or 3, Ar 421 are the same as or different from each other, when n4 is 2 or 3, L 421 is not a single bond.)

[0788] In one aspect of the organic EL element according to the present embodiment, the azine derivative contained in the electron transport layer is a compound represented by the following general formula (E422) and general formula (E423).

[0789]

Chemical formula

[0790] (In the general formula (E422), n4, X 401 ~X 403 , R 4201 and R 4202 are each independently n4, X 401 ~X 403 , R 4201 and R 4202 in the general formula (E42), and have the same meanings, L 421 is the same as L 421 in the general formula (E421), and has the same meaning, Ar 422 is a group represented by the general formula (E423).) (In the general formula (E423), X 404 is an oxygen atom, a sulfur atom, N(R 4221 ), or C(R 4222 )(R 4223 ), and one of R 4211 ~R 4218 and R 4221 ~R 4223 is a single bond that binds to L 421 , and one or more sets of two or more adjacent ones among R L 421 that are not single bonds that bind to L 4211 ~R 4218 are bonded to each other to form a substituted or unsubstituted monocyclic ring, bonded to each other to form a substituted or unsubstituted condensed ring, or not bonded to each other, and a set consisting of R L 421 that is not a single bond that binds to L 4222 and R 4223 are bonded to each other to form a substituted or unsubstituted monocyclic ring, bonded to each other to form a substituted or unsubstituted condensed ring, or not bonded to each other, and L 421R, which does not form a single bond to bond with and does not form the substituted or unsubstituted monocyclic ring or the substituted or unsubstituted condensed ring 4211 ~R 4218 and R 4221 , and L 421 R, which does not form a single bond to bond with and does not form the substituted or unsubstituted monocyclic ring or the substituted or unsubstituted condensed ring 4222 and R 4223 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 )-represented group, -O-(R 904 )-represented group, -S-(R 905 )-represented group, -N(R 906 )(R 907 )-represented group, a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, when n4 is 2 or 3, a plurality of Xs 404 are the same as or different from each other, a plurality of Rs 4211 are the same as or different from each other, a plurality of Rs 4212 are the same as or different from each other, a plurality of Rs 4213 are the same as or different from each other, a plurality of Rs 4214 are the same as or different from each other, a plurality of Rs4215 are the same as or different from each other, and there are a plurality of Rs 4216 are the same as or different from each other, and there are a plurality of Rs 4217 are the same as or different from each other, and there are a plurality of Rs 4218 are the same as or different from each other.) (In the general formulas (E422) and (E423), R 901 ~R 907 are each independently the same as R in the azine derivative 901 ~R 907 .)

[0791] For example, in the general formula (E421), when n4 is 1, in the general formula (E421), the group represented by (Ar 421 ) n4 -L 421 -* is represented by the following general formula (E421-1). In this aspect, L 421 is a divalent linking group. * represents the bonding position to the six-membered ring in the general formula (E421). Also, in the general formula (E421), when n4 is 2, in the general formula (E421), the group represented by (Ar 421 ) n4 -L 421 -* is represented by the following general formula (E421-2). Ar 421 are the same as or different from each other. In this aspect, L 421 is a trivalent linking group. Also, in the general formula (E421), when n4 is 3, in the general formula (E421), the group represented by (Ar 421 ) n4 -L 421 -* is represented by the following general formula (E421-3). Ar 421 are the same as or different from each other. In this aspect, L 421 is a tetravalent linking group. In the general formula (E422), (Ar 422 ) n4 -L 421The same applies to the group represented by ―*.

[0792] [Chemical formula]

[0793] (In the general formulas (E421-1), (E421-2) and (E421-3), * represents the bonding position with the six-membered ring in the general formula (E421).)

[0794] In the general formulas (E421) and (E422), L as a linking group 421 is preferably a divalent or trivalent group derived from any one of benzene, biphenyl, terphenyl, naphthalene and phenanthrene.

[0795] In one aspect of the organic EL element according to the present embodiment, when the substituent in the azine derivative is "substituted or unsubstituted", the substituent is at least any one group selected from the group consisting of an alkyl group having 1 to 18 carbon atoms, an aryl group having 6 to 18 ring-forming carbon atoms, and a heterocyclic group having 5 to 18 ring-forming atoms. In one aspect of the organic EL element according to the present embodiment, when the substituent in the azine derivative is "substituted or unsubstituted", the substituent is an alkyl group having 1 to 5 carbon atoms. In one aspect of the organic EL element according to the present embodiment, the groups described as "substituted or unsubstituted" in the azine derivative are all "unsubstituted" groups.

[0796] (Benzimidazole derivative) In one aspect of the organic EL element according to the present embodiment, at least one electron transport layer in the electron transport band contains a benzimidazole derivative as a nitrogen-containing compound. In one aspect of the organic EL element according to the present embodiment, the benzimidazole derivative contained in the electron transport layer is a compound represented by the following general formula (E41).

[0797] [Chemical formula]

[0798] (In the general formula (E41), R 41 ~R 46 one or more sets of two or more adjacent ones among them are bonded to each other to form a substituted or unsubstituted monocyclic ring, bonded to each other to form a substituted or unsubstituted condensed ring, or not bonded to each other, not forming the substituted or unsubstituted monocyclic ring and not forming the substituted or unsubstituted condensed ring, and R 41 ~R 46 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 )-represented group, -O-(R 904 )-represented group, -S-(R 905 )-represented group, -N(R 906 )(R 907 )-represented group, a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms.) (In the general formula (E41), R 901 ~R 907 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, A cycloalkyl group having 3 to 50 ring-forming carbon atoms, which may or may not be substituted, an aryl group having 6 to 50 ring-forming carbon atoms, which may or may not be substituted, or a heterocyclic group having 5 to 50 ring-forming atoms, which may or may not be substituted, R 901 When there are a plurality of R's, the plurality of R's 901 are the same as or different from each other, R 902 When there are a plurality of R's, the plurality of R's 902 are the same as or different from each other, R 903 When there are a plurality of R's, the plurality of R's 903 are the same as or different from each other, R 904 When there are a plurality of R's, the plurality of R's 904 are the same as or different from each other, R 905 When there are a plurality of R's, the plurality of R's 905 are the same as or different from each other, R 906 When there are a plurality of R's, the plurality of R's 906 are the same as or different from each other, R 907 When there are a plurality of R's, the plurality of R's 907 are the same as or different from each other.)

[0799] In one aspect of the organic EL element according to the present embodiment, the benzimidazole derivative contained in the electron transport layer is a compound represented by the following general formula (E41A), (E41B), (E41C), (E41D) or (E41E).

[0800]

Chemical formula

[0801] (In the general formulas (E41A), (E41B), (E41C), (E41D) and (E41E), R 41 ~R 46 are each independently R in the general formula (E41) 41 ~R46 is synonymous with L 41 is a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms, Ar 41 is a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a group represented by -O-(R 904 ), a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, R 904 is the same as R in the benzimidazole derivative.) 904

[0802] In one aspect of the organic EL element according to the present embodiment, in the general formulas (E41A), (E41B), (E41C), (E41D) and (E41E), Ar 41 is a group represented by the following general formula (E412).

[0803] [Chemical formula]

[0804] (In the general formula (E412), R 481 ~R 489 One of them is a single bond that binds to L 41 and, L 41 R that is not a single bond that binds to 481 ~R 489 One or more sets of two or more adjacent ones among them are bonded to each other to form a substituted or unsubstituted monocyclic ring, bonded to each other to form a substituted or unsubstituted condensed ring, or not bonded to each other, L 41R, which does not form a single bond to bond with and does not form the substituted or unsubstituted monocyclic ring or the substituted or unsubstituted condensed ring 481 ~R 489 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R 901 )(R 902 )(R 903 ) group represented by, -O-(R 904 ) group represented by, -S-(R 905 ) group represented by, -N(R 906 )(R 907 ) group represented by, a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, and L 42 are each independently a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms, and Ar 42 are each independently a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms.) (In the general formula (E412), R 901 ~R 907 are each independently the same as R 901 ~R 907 in the benzimidazole derivative.)

[0805] In the general formulas (E41A), (E41B), (E41C), (E41D) and (E41E), L 41 is a substituted or unsubstituted phenylene group, a substituted or unsubstituted biphenylene group, a substituted or unsubstituted naphthylene group, a substituted or unsubstituted pyridinylene group, or a substituted or unsubstituted 9,9'-spirobifluorenylene group, preferably. In the general formulas (E41A), (E41B), (E41C), (E41D) and (E41E), L 41 is an unsubstituted phenylene group, an unsubstituted biphenylene group, an unsubstituted naphthylene group, an unsubstituted pyridinylene group, or an unsubstituted 9,9'-spirobifluorenylene group, more preferably.

[0806] In the general formulas (E41A), (E41B), (E41C), (E41D) and (E41E), Ar 41 is a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthryl group, a substituted or unsubstituted fluoranthenyl group, a substituted or unsubstituted pyrenyl group, or a substituted or unsubstituted fluorenyl group, preferably. In the general formulas (E41A), (E41B), (E41C), (E41D) and (E41E), Ar 41 is an unsubstituted phenyl group, an unsubstituted biphenyl group, an unsubstituted terphenyl group, an unsubstituted naphthyl group, An unsubstituted phenanthryl group, An unsubstituted fluoranthenyl group, An unsubstituted pyrenyl group, or An unsubstituted 9,9-dimethylfluorenyl group is more preferable.

[0807] In one aspect of the organic EL element according to this embodiment, the benzimidazole derivative is a compound represented by the following general formula (E413).

[0808] [Chemical formula]

[0809] (In the general formula (E413), R 41 ~R 45 and L 41 are each independently the same as R 41 ~R 45 and L 41 in the general formula (E41A), and R 481 ~R 488 , L 42 and Ar 42 are each independently the same as R 481 ~R 488 , L 42 and Ar 42 in the general formula (E412).)

[0810] In one aspect of the organic EL element according to this embodiment, the groups described as "substituted or unsubstituted" in the benzimidazole derivative are all "unsubstituted" groups.

[0811] (Specific examples of nitrogen-containing compounds) Specific examples of nitrogen-containing compounds include, for example, the following compounds. However, the present invention is not limited to these specific examples of nitrogen-containing compounds.

[0812] [Chemical formula]

[0813] [Chemistry]

[0814] [Chemistry]

[0815] [Chemistry]

[0816] [Chemistry]

[0817] [Chemistry]

[0818] [Chemistry]

[0819] [Chemistry]

[0820] [Chemistry]

[0821] [Chemistry]

[0822] [Chemistry]

[0823] [Chemistry]

[0824]

Chem.

[0825]

Chem.

[0826]

Chem.

[0827]

Chem.

[0828]

Chem.

[0829]

Chem.

[0830]

Chem.

[0831]

Chem.

[0832]

Chem.

[0833]

Chem.

[0834] [Chemistry]

[0835] [Chemistry]

[0836] [Chemistry]

[0837] [Chemistry]

[0838] [Chemistry]

[0839] [Chemistry]

[0840] [Chemistry]

[0841] [Chemistry]

[0842] [Chemistry]

[0843] [Chemistry]

[0844] [Chemistry]

[0845]

Chem.

[0846]

Chem.

[0847]

Chem.

[0848]

Chem.

[0849]

Chem.

[0850]

Chem.

[0851]

Chem.

[0852]

Chem.

[0853]

Chem.

[0854]

Chem.

[0855] [Chemistry]

[0856] [Chemistry]

[0857] [Chemistry]

[0858] [Chemistry]

[0859] [Chemistry]

[0860] [Chemistry]

[0861] In the organic EL element of this embodiment, the electron transport layer that may be included in the electron transport band is not limited to the electron transport layer containing the aforementioned nitrogen-containing compound. The electron transport layer is a layer containing a substance with high electron transport properties. In the electron transport layer, 1) metal complexes such as aluminum complexes, beryllium complexes, and zinc complexes, 2) heteroaromatic compounds such as imidazole derivatives, benzimidazole derivatives, azine derivatives, carbazole derivatives, and phenanthroline derivatives, and 3) polymer compounds can be used. Specifically, as low-molecular organic compounds, Alq, tris(4-methyl-8-quinolinolato)aluminum (abbreviation: Almq 3 ), bis(10-hydroxybenzo[h]quinolinato)beryllium (abbreviation: BeBq 2) Metal complexes such as BAlq, Znq, ZnPBO, ZnBTZ, etc. can be used. In addition to metal complexes, 2-(4-biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole (abbreviation: PBD), 1,3-bis[5-(p-tert-butylphenyl)-1,3,4-oxadiazol-2-yl]benzene (abbreviation: OXD-7), 3-(4-tert-butylphenyl)-4-phenyl-5-(4-biphenylyl)-1,2,4-triazole (abbreviation: TAZ), 3-(4-tert-butylphenyl)-4-(4-ethylphenyl)-5-(4-biphenylyl)-1,2,4-triazole (abbreviation: p-EtTAZ), bathophenanthroline (abbreviation: BPhen), bathocuproine (abbreviation: BCP), 4,4'-bis(5-methylbenzoxazol-2-yl)stilbene (abbreviation: BzOs), and other heteroaromatic compounds can also be used. In one aspect of this embodiment, a nitrogen-containing compound (preferably a benzimidazole compound) can be preferably used. The substances described here mainly have an electron mobility of 10 -6 cm 2 / (V·s) or more. As long as the substance has higher electron transportability than hole trans...

Claims

1. A composition containing a first compound and a second compound, wherein the first compound and the second compound are different from each other, and the first compound and the second compound are each independently an amine compound having a refractive index of 1.80 or less.

2. At least one of the first compound and the second compound is an amine compound having a refractive index of 1.78 or less, The composition according to claim 1.

3. The refractive index n of the first compound １ and the refractive index n of the second compound ２ such that the absolute value of the difference |n １ − n ２ | is 0.05 or less The composition according to claim 1 or claim 2.

4. The first compound and the second compound are each independently a compound represented by the following general formula (C1) or a compound represented by the following general formula (C3), The composition according to any one of claims 1 to 3. 【Chemical 1】 (In the general formula (C1), L Ａ１ , L Ａ２ and L Ａ３ are each independently a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms, Ar １１１ 、 Ar １１２ and Ar １１３ are each independently a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, or -Si(R Ｃ１ )(R Ｃ２ )(R Ｃ３ ) and R Ｃ１ , R Ｃ２ and R Ｃ３ are each independently a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, R Ｃ１ When there are a plurality of Rs Ｃ１ they may be the same as each other or different R Ｃ２ When there are a plurality of R's Ｃ２ they may be identical to each other or different R Ｃ３ When there are a plurality of Rs Ｃ３ they are identical to or different from each other.) ​ (In the general formula (C3), L Ｃ１ 、L Ｃ２ 、L Ｃ３ and L Ｃ４ are each independently a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms, n2 is 1, 2, 3 or 4, When n2 is 1, L Ｃ５ is a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms, When n2 is 2, 3, or 4, a plurality of Ls Ｃ５ are identical to each other or different from each other, When n2 is 2, 3, or 4, a plurality of Ls Ｃ５ are bonded to each other to form a substituted or unsubstituted monocyclic ring, bonded to each other to form a substituted or unsubstituted condensed ring, or not bonded to each other, L which does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring Ｃ５ is a substituted or unsubstituted arylene group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring-forming atoms, Ar １３１ 、Ar １３２ 、Ar １３３ and Ar １３４ are each independently, a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, or -Si(R Ｃ１ )(R Ｃ２ )(R Ｃ３ ) and R Ｃ１ , R Ｃ２ and R Ｃ３ are each independently a substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, R Ｃ１ When there are a plurality of R's Ｃ１ they may be the same as or different from each other R Ｃ２ When there are a plurality of Rs Ｃ２ they may be the same as each other or different R Ｃ３ When there are a plurality of R's Ｃ３ they may be the same as or different from each other.)

5. The first compound and the second compound are each independently a compound represented by the general formula (C1), The composition according to claim 4.

6. At least one of the aryl group and the heterocyclic group of the compound represented by the general formula (C1) and the compound represented by the general formula (C3) is substituted with a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, The composition according to claim 4 or claim 5.

7. The aryl group and the heterocyclic group of the compound represented by the general formula (C1) and the compound represented by the general formula (C3) are substituted with an alkyl group having 1 to 30 carbon atoms which may or may not be substituted. The composition according to claim 4 or claim 5.

8. Ar of the compound represented by the general formula (C1) １１１ , Ar １１２ and Ar １１３ one or more of which is a group represented by the following general formula (C4), or Ar of the compound represented by the general formula (C3) １３１ , Ar １３２ , Ar １３３ and Ar １３４ one or more of which is a group represented by the following general formula (C4). The composition according to any one of claims 4 to 7. [Chemical 3] (In the general formula (C4), R ３１１ ~R ３１８ One of them is a single bond that binds to *e, *R that is not a single bond bonded to e ３１１ ~R ３１８ Among them, a group consisting of two or more adjacent ones bond to each other to form a substituted or unsubstituted benzene ring, or do not bond to each other, *R which is not a single bond connecting to e and does not form the substituted or unsubstituted benzene ring ３１１ ~R ３１８ are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 30 ring-forming atoms, R ３１９ and R ３２０ consisting of a set of bond to each other to form a substituted or unsubstituted monocyclic ring, bond to each other to form a substituted or unsubstituted condensed ring, or do not bond to each other, R which does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring ３１９ and R ３２０ are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 12 ring-forming carbon atoms, ** is L Ａ１ L Ａ２ L Ａ３ L Ｃ１ L Ｃ２ L Ｃ３ or L Ｃ４ represents the coupling position with. )

9. Ar in the compound represented by the general formula (C1) １１１ , Ar １１２ and Ar １１３ Two or more of are groups represented by the general formula (C4), or Ar １３１ , Ar １３２ , Ar １３３ and Ar １３４ Two or more of are groups represented by the general formula (C4). The composition according to claim 8.

10. R ３１９ and R ３２０ are each independently a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, The composition according to claim 8 or claim 9.

11. R ３１９ and R ３２０ at least one of which is a substituted or unsubstituted aryl group having 6 to 12 ring-forming carbon atoms The composition according to claim 8 or claim 9.

12. R ３１９ and R ３２０ at least one of which is a phenyl group substituted with a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms The composition according to claim 8 or claim 9.

13. R ３１９ and R ３２０ is a substituted or unsubstituted phenyl group, The composition according to claim 8 or claim 9.

14. R ３１９ and R ３２０ in which a group consisting of and are bonded to each other to form an optionally substituted monocyclic ring or are bonded to each other to form an optionally substituted condensed ring, The composition according to claim 8 or claim 9.

15. R ３１１ ~R ３１８ at least one of which is a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms The composition according to any one of claims 8 to 14.

16. R ３１３ ~R ３１６ One of them is a single bond that binds to *e, The composition according to any one of claims 8 to 15.

17. Ar of the compound represented by the general formula (C1) １１１ , Ar １１２ and Ar １１３ , and Ar of the compound represented by the general formula (C3) １３１ , Ar １３２ , Ar １３３ and Ar １３４ is each independently a group represented by the following general formula (2-a), (2-b), (2-c), (2-d), (2-e) or (2-f). The composition according to any one of claims 4 to 7. 【Chemical Formula 4】 (In the general formula (2-a), R ２５１ to R ２５５ Among the groups consisting of two or more adjacent ones, none of them are bonded to each other, R ２５１ ~R ２５５ are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, or a substituted or unsubstituted cycloalkyl group having 3 to 30 ring-forming atoms, ** represents the bonding position.) [Chemical Formula 5] (In the general formula (2-b), R ２６１ ~R ２６８ One of them is a single bond that binds to *b, R other than a single bond that binds to b ２６１ ~R ２６８ Among them, any combination consisting of two or more adjacent ones does not bind to each other, R that is not a single bond connecting to *b ２６１ ~R ２６８ are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 30 ring-forming atoms, or a substituted or unsubstituted aryl group having 6 to 12 ring-forming carbon atoms, ** represents the bonding position.) 【Chemical Formula 6】 (In the general formula (2-c), R ２７１ ~R ２８２ One of them is a single bond that binds to *c, *R that is not a single bond bonded to c ２７１ ~R ２８２ Among them, any group consisting of two or more adjacent ones does not bond to each other, *R that is not a single bond binding to c ２７１ ~R ２８２ are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 30 ring-forming atoms, or a substituted or unsubstituted aryl group having 6 to 12 ring-forming carbon atoms, ** represents the bonding position.) 【Chemical Formula 7】 (In the general formula (2-d), R ２９１ ~R ３００ Among them, one is a single bond that binds to *d, *R that is not a single bond connecting to d ２９１ ~R ３００ Among them, any combination consisting of two or more adjacent ones does not bond to each other, *R that is not a single bond bonded to d ２９１ ~R ３００ are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 30 ring-forming atoms, or a substituted or unsubstituted aryl group having 6 to 12 ring-forming carbon atoms, wherein ** represents the bonding position.) [Chemical Formula 8] (In the general formula (2-e), Z ３ is an oxygen atom, a sulfur atom, NR ３１９ or C(R ３２０ )(R ３２１ ), and R ３１１ ~R ３２１ One of them is a single bond connecting to *e, or a carbon atom of any of the following substituted or unsubstituted benzene rings formed by the combination of two or more adjacent ones among R ３１１ ~R ３１８ is connected to *e by a single bond, *R that is not a single bond bonded to e ３１１ ~R ３１８ Among them, a group consisting of two or more adjacent ones bonded to each other to form a substituted or unsubstituted benzene ring, or not bonded to each other, R which is not a single bond connecting to e and does not form the substituted or unsubstituted benzene ring ３１１ ~R ３１８ are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 30 ring-forming atoms, a substituted or unsubstituted aryl group having 6 to 12 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 10 ring-forming atoms, *R which is not a single bond and binds to e ３１９ is a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 12 ring-forming carbon atoms, *R, which is not a single bond, bonded to e ３２０ and R ３２１ consist of a pair that bonded to each other to form a substituted or unsubstituted monocyclic ring, bonded to each other to form a substituted or unsubstituted condensed ring, or not bonded to each other, R which is not a single bond connecting to e, and which does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring ３２０ and R ３２１ are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 12 ring-forming carbon atoms, wherein ** represents the bonding position.) 【Chemical Formula 9】 (In the general formula (2-f), R ３４１ ~R ３４５ One of them is a single bond that binds to *h1, and R ３４１ ~R ３４５ The other one of them is a single bond that binds to *h2, R that is not a single bond connecting to *h1 and not a single bond connecting to *h2 ３４１ ~R ３４５ Among them, any group consisting of two or more adjacent ones does not bond to each other R ３５１ to R ３５５ at least one set of two or more adjacent ones among them forms bonded to each other to form a substituted or unsubstituted monocyclic ring, bonded to each other to form a substituted or unsubstituted condensed ring, or not bonded to each other, R ３６１ to R ３６５ at least one set consisting of two or more adjacent ones among them is bonded to each other to form a substituted or unsubstituted monocyclic ring, bonded to each other to form a substituted or unsubstituted condensed ring, or not bonded to each other, R which is not a single bond connecting to *h1 and not a single bond connecting to *h2 ３４１ ~R ３４５ and R which does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring ３５１ ~R ３５５ and R ３６１ ~R ３６５ each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 30 ring-forming atoms, or a substituted or unsubstituted aryl group having 6 to 12 ring-forming carbon atoms, wherein ** represents the bonding position.)

18. L Ａ１ 、L Ａ２ 、L Ａ３ 、L Ｃ１ 、L Ｃ２ 、L Ｃ３ and L Ｃ４ are each independently a single bond, a substituted or unsubstituted o-phenylene group, or a substituted or unsubstituted m-phenylene group. The composition according to any one of Claims 4 to 17.

19. An organic electroluminescence device comprising an anode, a cathode, and an organic layer disposed between the anode and the cathode, wherein at least one layer included in the organic layer contains the composition according to any one of Claims 1 to 18.

20. The organic electroluminescence device according to Claim 19, wherein the first compound and the second compound are contained in the same layer.

21. The organic layer includes a light-emitting band and a hole transport band, the light-emitting band includes at least one light-emitting layer, The hole transport region is disposed between the anode and the light-emitting region, At least one layer included in the hole transport region contains the first compound and the second compound, The organic electroluminescence device according to claim 19 or claim 20.

22. The hole transport region includes a hole injection layer and a hole transport layer, The organic electroluminescence device according to claim 21.

23. The hole transport layer contains the first compound and the second compound, The organic electroluminescence device according to claim 22.

24. The refractive index of the hole injection layer is greater than the refractive index of the hole transport layer, The organic electroluminescence device according to claim 23.

25. The hole transport layer includes a first hole transport layer and a second hole transport layer, The second hole transport layer is disposed between the first hole transport layer and the light-emitting region, The organic electroluminescence device according to any one of claims 22 to 24.

26. The refractive index n of the first hole transport layer ＨＴ１ is greater than the refractive index n ＨＴ２ of the second hole transport layer The organic electroluminescence device according to claim 25.

27. The film thickness of the second hole transport layer is 20 nm or more, The organic electroluminescence device according to claim 25 or claim 26.

28. The second hole transport layer contains the first compound and the second compound, The organic electroluminescence device according to any one of claims 25 to 27.

29. The hole transport layer further includes a third hole transport layer, The third hole transport layer is disposed between the hole injection layer and the first hole transport layer, From the anode side, the hole injection layer, the third hole transport layer, the first hole transport layer, and the second hole transport layer are arranged in this order, The organic electroluminescence device according to any one of claims 25 to 28.

30. The ratio of the total film thickness of the hole injection layer and the third hole transport layer to the film thickness of the second hole transport layer is 1:1.5 to 1.5:1, The organic electroluminescence device according to claim 29.

31. The ratio of the total film thickness of the hole injection layer and the third hole transport layer, the film thickness of the first hole transport layer, and the film thickness of the second hole transport layer is 1:1.5:1 to 1:2.5:1, The organic electroluminescence device according to claim 29 or claim 30.

32. The positive hole transport layer further includes a fourth positive hole transport layer, The fourth positive hole transport layer is disposed between the second positive hole transport layer and the light emission band, From the anode side, the first positive hole transport layer, the second positive hole transport layer, and the fourth positive hole transport layer are arranged in this order, The organic electroluminescence element according to any one of claims 25 to 31.

33. The refractive index n of the fourth hole transport layer ＨＴ４ is greater than the refractive index n of the first hole transport layer ＨＴ１ and the refractive index n of the second hole transport layer ＨＴ２ ​ The organic electroluminescence element according to claim 32.

34. The positive hole injection layer contains an acceptor material, The acceptor material includes at least one of a first ring structure represented by the following general formula (11) and a second ring structure represented by the following general formula (12), The organic electroluminescence element according to claim 22. 【Chemical 10】 (The first ring structure represented by the general formula (11) is condensed with at least one of a substituted or unsubstituted aromatic hydrocarbon ring having 6 to 50 ring-forming carbon atoms and a substituted or unsubstituted heterocyclic ring having 5 to 50 ring-forming atoms in the molecule of the acceptor material, = X １０ The structure represented by is represented by the following general formulas (11a), (11b), (11c), (11d), (11e), (11f), (11g), (11h), (11i), (11j), (11k) or (11m).) 【Chemical 11】 【Chemical Formula 12】 (In the general formulas (11a), (11b), (11c), (11d), (11e), (11f), (11g), (11h), (11i), (11j), (11k) or (11m), R １１ ~R １４ and R １１１ ~R １２０ are each independently, A hydrogen atom, A halogen atom, A hydroxy group, A cyano group, A substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, A substituted or unsubstituted halogenated alkyl group having 1 to 50 carbon atoms, A substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, -Si(R ９０１ )(R ９０２ )(R ９０３ ) group represented by -O-(R ９０４ ) group represented by -S-(R ９０５ ) group represented by -N(R ９０６ )(R ９０７ ) group represented by A substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or A substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms.) (In the general formula (12), X １ to X ５ are each independently A nitrogen atom, R １５ a carbon atom that binds to, or A carbon atom that binds to other atoms in the molecule of the acceptor material, X １ to X ５ at least one of which is a carbon atom that binds to other atoms in the molecule of the acceptor material, R １５ is A hydrogen atom, A halogen atom, A cyano group, A substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, A substituted or unsubstituted halogenated alkyl group having 1 to 50 carbon atoms, A substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, A substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, A substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, -Si(R ９０１ )(R ９０２ )(R ９０３ ) group represented by -O-(R ９０４ ) group represented by -S-(R ９０５ ) group represented by -N(R ９０６ )(R ９０７ ) group represented by A substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, A substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, A carboxy group, A substituted or unsubstituted ester group, A substituted or unsubstituted carbamoyl group, A nitro group, and Selected from the group consisting of substituted or unsubstituted siloxanyl groups, R １５ When there are a plurality of R's １５ they are identical to or different from each other.) (In the acceptor material, R ９０１ to R ９０７ are each independently, A hydrogen atom, A substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, A substituted or unsubstituted cycloalkyl group having 3 to 50 ring-forming carbon atoms, A substituted or unsubstituted aryl group having 6 to 50 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring-forming atoms, R ９０１ If there are a plurality of Rs ９０１ they are identical to each other or different R ９０２ If there are a plurality of Rs ９０２ they may be identical to each other or different R ９０３ If there are a plurality of Rs ９０３ they are identical to each other or different R ９０４ If there are a plurality of R's, the plurality of R's ９０４ are the same as or different from each other, R ９０５ If there are a plurality of R's, the plurality of R's ９０５ are identical to each other or different from each other, R ９０６ If there are a plurality of R's ９０６ they may be the same as or different from each other R ９０７ If there are a plurality of Rs ９０７ they are either identical to each other or different.

35. the acceptor material has at least one cyano group, The organic electroluminescence device according to claim 34.

36. the hole injection layer contains a first organic material, the acceptor material and the first organic material are different from each other, the content of the acceptor material in the hole injection layer is less than 50% by mass, The organic electroluminescence device according to claim 34 or claim 35.

37. the light emission band includes two or more light emitting layers, at least two of the light emitting layers are laminated, The organic electroluminescence device according to any one of claims 21 to 36.

38. the light emission band includes a light emitting layer containing a host material and a light emitting compound that exhibits light emission with a maximum peak wavelength of 500 nm or less, The organic electroluminescence device according to any one of claims 21 to 37.

39. the full width at half maximum of the maximum peak of the light emitting compound is 1 nm or more and 30 nm or less, The organic electroluminescence device according to claim 38.

40. having an electron transport band disposed between the cathode and the light emission band, the electron transport band includes at least one electron transport layer, at least one electron transport layer in the electron transport band contains a nitrogen-containing compound, at least one electron transport layer in the electron transport band contains, as the nitrogen-containing compound, at least one compound selected from the group consisting of imidazole derivatives, benzimidazole derivatives, azine derivatives, carbazole derivatives, and phenanthroline derivatives, The organic electroluminescence device according to any one of claims 21 to 39.

41. An electronic device equipped with the organic electroluminescence device according to any one of claims 19 to 40.

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