Organic electroluminescent element and electronic apparatus

Abstract

To provide an organic EL element, in which a deterioration of a mass productivity is suppressed, and an element performance is improved.SOLUTION: An organic EL element 1 includes: a positive electrode 3; a negative electrode 4; a light emission region 5; and a positive hole transportation band 6. The positive hole transportation band 6 contains: a first positive hole transportation layer 61; a second positive hole transportation layer 62; and a third positive hole transportation layer 63. A refraction factor NM2 of a construction material contained in the second positive hole transportation layer 62 is larger than a refraction factor NM1 of the construction material contained in the first positive hole transportation layer 61 and a refraction factor NM3 of the construction material contained in the third positive hole transportation layer 63, respectively. Both of the first positive hole transportation layer 61 and the third positive hole transportation layer 63 contain at least one kind of the same materials. In addition, the positive hole transportation band 6 contains at least any one of a positive hole injection layer 60 and a fourth positive hole transportation layer 64. The positive hole injection layer 60 contains an acceptor material, and the fourth positive hole transportation layer 64 contains at least one or more of chemical compounds having an ionization potential of 5.6 eV or more. A film thickness of the fourth positive hole transportation layer 64 is 15nm or less.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an organic electroluminescence element and an electronic device. [Background technology]

[0002] Organic electroluminescence elements (hereinafter sometimes referred to as "organic EL elements") are applied to full-color displays such as mobile phones and televisions. When a voltage is applied to an 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 laws of electron spin, singlet excitons are generated at a rate of 25% and triplet excitons are generated at a rate of 75%. The performance of an organic EL element includes, for example, luminance, emission wavelength, chromaticity, luminous efficiency, driving voltage, and life. For example, Patent Documents 1 and 2 discuss ways to improve the performance of organic EL elements. Patent Documents 1 and 2 disclose organic EL elements in which a hole transport region is composed of multiple layers. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] US Patent Application Publication No. 2021 / 0159418 [Patent Document 2] US Patent Application Publication No. 2021 / 0234098 Summary of the Invention [Problem to be solved by the invention]

[0004] Increasing the number of organic layers constituting the hole transport region may improve the performance of the device, but the increase in the number of materials and steps required to form the organic layers is likely to reduce the mass productivity of the organic electroluminescence device.

[0005] An object of the present invention is to provide an organic electroluminescence element in which a decrease in mass productivity is suppressed and element performance is improved, and to provide an electronic device incorporating the organic electroluminescence element. [Means for solving the problem]

[0006] According to one aspect of the present invention, there is provided an organic EL display device having an anode, a cathode, a light-emitting region disposed between the anode and the cathode, and a hole transport zone disposed between the anode and the light-emitting region, the light-emitting region including at least one light-emitting layer, the hole transport zone including a first hole transport layer, a second hole transport layer, and a third hole transport layer, the first hole transport layer, the second hole transport layer, and the third hole transport layer being disposed in this order from the anode side, and a refractive index NM 2 is the refractive index NM of the constituent material contained in the first hole transport layer 1 and the refractive index NM of the constituent material contained in the third hole transport layer. 3 the first hole transport layer and the third hole transport layer contain at least one of the same materials, the hole transport zone further includes at least one of a hole injection layer and a fourth hole transport layer, the hole injection layer is disposed between the anode and the first hole transport layer, the hole injection layer contains an acceptor material, the fourth hole transport layer is disposed between the third hole transport layer and the light emitting region, the fourth hole transport layer contains one or more compounds having an ionization potential of 5.6 eV or more, and the fourth hole transport layer has a thickness of 15 nm or less.

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

[0008] According to one aspect of the present invention, it is possible to provide an organic electroluminescence element in which a decrease in mass productivity is suppressed and element performance is improved, and to provide an electronic device equipped with the organic electroluminescence element. [Brief description of the drawings]

[0009] [Figure 1] 1 is a diagram showing a schematic configuration of an example of an organic electroluminescence element according to a first embodiment. [Diagram 2] FIG. 4 is a diagram showing a schematic configuration of another example of the organic electroluminescence element according to the first embodiment. [Diagram 3] FIG. 4 is a diagram showing a schematic configuration of another example of the organic electroluminescence element according to the first embodiment. [Figure 4] FIG. 4 is a diagram showing a schematic configuration of another example of the organic electroluminescence element according to the first embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] [Definition] In this specification, hydrogen atoms include isotopes having different numbers of neutrons, namely protium, deuterium, and tritium.

[0011] In the present specification, in a chemical structural formula, a hydrogen atom, i.e., a protium atom, a deuterium atom, or a tritium atom is assumed to be bonded to a possible bonding position that is not explicitly indicated with a symbol such as "R" or "D" representing a deuterium atom.

[0012] In this specification, the number of ring 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 with a substituent, the carbon contained in the substituent is not included in the number of ring carbon atoms. The "number of ring carbon atoms" described below is the same unless otherwise specified. For example, a benzene ring has 6 ring carbon atoms, a naphthalene ring has 10 ring carbon atoms, a pyridine ring has 5 ring carbon atoms, and a furan ring has 4 ring carbon atoms. For example, the number of ring carbon atoms of a 9,9-diphenylfluorenyl group is 13, and the number of ring carbon atoms of a 9,9'-spirobifluorenyl group is 25. In addition, when a benzene ring is substituted with, for example, an alkyl group as a substituent, the carbon number of the alkyl group is not included in the number of ring carbon atoms of the benzene ring. Therefore, the number of ring carbon atoms of the benzene ring substituted with an alkyl group is 6. In addition, when a naphthalene ring is substituted with, for example, an alkyl group as a substituent, the carbon number of the alkyl group is not included in the number of ring carbon atoms of the naphthalene ring. Therefore, the number of ring carbon atoms of the naphthalene ring substituted with an alkyl group is 10.

[0013] In this specification, the number of ring atoms refers to the number of atoms constituting the ring itself of a compound (e.g., a monocyclic compound, a fused ring compound, a bridged compound, a carbocyclic compound, and a heterocyclic compound) having a structure in which atoms are bonded in a ring (e.g., a monocyclic compound, a fused ring compound, and a ring assembly). The number of ring atoms does not include atoms that do not constitute a ring (e.g., a hydrogen atom that terminates the bond of an atom constituting a ring) or atoms contained in a substituent when the ring is substituted with a substituent. The "number of ring atoms" described below is the same unless otherwise specified. For example, the number of ring atoms of a pyridine ring is 6, the number of ring atoms of a quinazoline ring is 10, and the number of ring atoms of a furan ring is 5. For example, the number of hydrogen atoms or atoms constituting a substituent bonded to a pyridine ring is not included in the number of pyridine ring atoms. Therefore, the number of ring atoms of a pyridine ring to which a hydrogen atom or a substituent is bonded is 6. For example, hydrogen atoms bonded to carbon atoms of a quinazoline ring or atoms constituting a substituent are not included in the number of ring atoms of the quinazoline ring. Therefore, the number of ring atoms of a quinazoline ring to which a hydrogen atom or a substituent is bonded is 10.

[0014] In the present specification, the "number of carbon atoms XX to YY" in the expression "a substituted or unsubstituted ZZ group having carbon atoms XX to YY" 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 the ZZ group is substituted. Here, "YY" is larger than "XX", "XX" means an integer of 1 or more, and "YY" means an integer of 2 or more.

[0015] In the present specification, the "number of atoms XX to YY" in the expression "a substituted or unsubstituted ZZ group having the number of atoms XX to YY" represents the number of atoms when the ZZ group is unsubstituted, and does not include the number of atoms of the substituent when the ZZ group is substituted. Here, "YY" is larger than "XX", "XX" means an integer of 1 or more, and "YY" means an integer of 2 or more.

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

[0017] "Substituents Described Herein" The substituents described in this specification will be described below.

[0018] The "unsubstituted aryl group" described in this specification has 6 to 50 ring carbon atoms, preferably 6 to 30, and more preferably 6 to 18 ring carbon atoms, unless otherwise specified in this specification. The "unsubstituted heterocyclic group" described in this specification has 5 to 50 ring atoms, preferably 5 to 30, and more preferably 5 to 18 ring atoms, unless otherwise specified in this specification. The "unsubstituted alkyl group" described in this specification has 1 to 50 carbon atoms, preferably 1 to 20 carbon atoms, and more preferably 1 to 6 carbon atoms, unless otherwise specified in this specification. The "unsubstituted alkenyl group" described in this specification has 2 to 50 carbon atoms, preferably 2 to 20 carbon atoms, and more preferably 2 to 6 carbon atoms, unless otherwise specified in this specification. The "unsubstituted alkynyl group" described in this specification has 2 to 50 carbon atoms, preferably 2 to 20 carbon atoms, and more preferably 2 to 6 carbon atoms, unless otherwise specified in this specification. The "unsubstituted cycloalkyl group" described in this specification has 3 to 50 ring carbon atoms, preferably 3 to 20, and more preferably 3 to 6 ring carbon atoms, unless otherwise specified in this specification. The "unsubstituted arylene group" described in this specification has 6 to 50 ring carbon atoms, preferably 6 to 30, and more preferably 6 to 18 ring carbon atoms, unless otherwise specified in this specification. The "unsubstituted divalent heterocyclic group" described in this specification has 5 to 50 ring atoms, preferably 5 to 30, and more preferably 5 to 18 ring atoms, unless otherwise specified in this specification. The "unsubstituted alkylene group" described in this specification has 1 to 50 carbon atoms, preferably 1 to 20 carbon atoms, and more preferably 1 to 6 carbon atoms, unless otherwise specified in this specification.

[0019] "Substituted or unsubstituted aryl groups" Specific examples (specific example group G1) of the "substituted or unsubstituted aryl group" described in this specification include the following unsubstituted aryl group (specific example group G1A) and substituted aryl group (specific example group G1B). (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 the term "aryl group" is simply used, it includes both an "unsubstituted aryl group" and a "substituted aryl group". The term "substituted aryl group" refers to a group in which one or more hydrogen atoms of an "unsubstituted aryl group" are replaced with a substituent. Examples of the "substituted aryl group" include the "unsubstituted aryl group" in the specific example group G1A below in which one or more hydrogen atoms are replaced with a substituent, and the substituted aryl group in the specific example group G1B below. The examples of the "unsubstituted aryl group" and the examples of the "substituted aryl group" listed here are merely examples, and the "substituted aryl group" described in this specification also includes the "substituted aryl group" in the specific example group G1B below in which a hydrogen atom bonded to a carbon atom of the aryl group itself is further replaced with a substituent, and the "substituted aryl group" in the specific example group G1B below in which a hydrogen atom of a substituent is further replaced with a substituent.

[0020] Unsubstituted aryl groups (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, Benzanthryl group, A phenanthryl group, Benzophenanthryl group, A phenalenyl group, Pyrenyl group, Chrysenyl group, benzochrysenyl group, A triphenylenyl group, Benzotriphenylenyl group, tetracenyl group, Pentacenyl group, fluorenyl group, 9,9'-spirobifluorenyl group, Benzofluorenyl group, Dibenzofluorenyl group, fluoranthenyl group, Benzofluoranthenyl group, Perylenyl groups, and A monovalent aryl group derived by removing one hydrogen atom from a ring structure represented by the following general formulas (TEMP-1) to (TEMP-15).

[0021] [ka]

[0022] [ka]

[0023] Substituted aryl groups (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 a ring structure represented by any one of the general formulae (TEMP-1) to (TEMP-15) are replaced with a substituent.

[0024] "Substituted or unsubstituted heterocyclic groups" The "heterocyclic group" described herein is a cyclic group containing at least one heteroatom as a ring-forming atom. 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 groups" described herein are either monocyclic or fused ring groups. The "heterocyclic group" described herein may be 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 group (specific example group G2A) and substituted heterocyclic group (specific example group G2B). (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 the term "heterocyclic group" is simply used, it includes both an "unsubstituted heterocyclic group" and a "substituted heterocyclic group". The term "substituted heterocyclic group" refers to a group in which one or more hydrogen atoms of an "unsubstituted heterocyclic group" are replaced with a substituent. Specific examples of the "substituted heterocyclic group" include the groups in which the hydrogen atoms of the "unsubstituted heterocyclic group" in the specific example group G2A below are replaced, and the examples of the substituted heterocyclic group in the specific example group G2B below are exemplified. The examples of the "unsubstituted heterocyclic group" and the examples of the "substituted heterocyclic group" listed here are merely examples, and the "substituted heterocyclic group" described in this specification also includes the groups in which the hydrogen atoms bonded to the ring-forming atoms of the heterocyclic group itself in the "substituted heterocyclic group" in the specific example group G2B are further replaced with a substituent, and the groups in which the hydrogen atoms of the substituents in the "substituted heterocyclic group" in the specific example group G2B are further replaced with a substituent.

[0025] The 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 ring structures represented by the following general formulae (TEMP-16) to (TEMP-33) (specific example group G2A4).

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

[0027] Unsubstituted heterocyclic groups containing a nitrogen atom (specific example group G2A1): Pyrrolyl group, imidazolyl group, A pyrazolyl group, A triazolyl group, Tetrazolyl group, oxazolyl group, an isoxazolyl group, oxadiazolyl group, A thiazolyl group, isothiazolyl group, A thiadiazolyl group, Pyridyl group, pyridazinyl group, pyrimidinyl group, A pyrazinyl group, Triazinyl group, Indolyl groups, isoindolyl group, Indolizinyl group, A quinolizinyl group, quinolyl group, isoquinolyl group, Cinnolyl group, phthalazinyl group, A quinazolinyl group, A quinoxalinyl group, Benzimidazolyl group, Indazolyl group, A phenanthrolinyl group, A phenanthridinyl group, acridinyl group, A phenazinyl group, A carbazolyl group, Benzocarbazolyl group, morpholino group, phenoxazinyl group, A phenothiazinyl group, Azacarbazolyl and diazacarbazolyl groups.

[0028] Unsubstituted heterocyclic groups containing an oxygen atom (specific example group G2A2): Furyl group, oxazolyl group, an isoxazolyl group, oxadiazolyl group, xanthenyl group, benzofuranyl group, isobenzofuranyl group, Dibenzofuranyl group, naphthobenzofuranyl group, benzoxazolyl group, benzoisoxazolyl group, phenoxazinyl group, morpholino group, Dinaphthofuranyl group, azadibenzofuranyl group, diazadibenzofuranyl group, Azanaphthobenzofuranyl groups, and Diazanaphthobenzofuranyl group.

[0029] Unsubstituted heterocyclic groups containing a sulfur atom (specific example group G2A3): A thienyl group, A thiazolyl group, isothiazolyl group, A thiadiazolyl group, Benzothiophenyl group (benzothienyl group), Isobenzothiophenyl group (isobenzothienyl group), Dibenzothiophenyl group (dibenzothienyl group), Naphthobenzothiophenyl group (naphthobenzothienyl group), benzothiazolyl group, Benzisothiazolyl group, A phenothiazinyl group, Dinaphthothiophenyl group (dinaphthothienyl group), Azadibenzothiophenyl group (azadibenzothienyl group), Diazadibenzothiophenyl group (diazadibenzothienyl group), Azanapthobenzothiophenyl group (azanaphthobenzothienyl group), and Diazanaphthobenzothiophenyl group (diazanaphthobenzothienyl group).

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

[0031] [ka]

[0032] [ka]

[0033] In the general formulae (TEMP-16) to (TEMP-33), X A and Y A each independently represents an oxygen atom, a sulfur atom, NH, or CH 2 However, X A and Y A At least one of is an oxygen atom, a sulfur atom, or NH. In the general formulae (TEMP-16) to (TEMP-33), X A and Y A At least one of the groups is NH or CH 2 In this case, the monovalent heterocyclic group derived from the ring structure represented by the general formulae (TEMP-16) to (TEMP-33) may have any of these NH, CH 2 This includes monovalent groups obtained by removing one hydrogen atom from the group.

[0034] Substituted heterocyclic groups containing a nitrogen atom (specific example group G2B1): A (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, Ethyl benzimidazolyl 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 sulfur atoms (specific example group G2B3): Phenyldibenzothiophenyl group, methyldibenzothiophenyl group, t-Butyldibenzothiophenyl group, and A monovalent residue of spiro[9H-thioxanthene-9,9'-[9H]fluorene].

[0037] Groups in which one or more hydrogen atoms of a monovalent heterocyclic group derived from a ring structure represented by the above general formulae (TEMP-16) to (TEMP-33) are replaced with a substituent (specific example group G2B4):

[0038] The above-mentioned "one or more hydrogen atoms of a monovalent heterocyclic group" refers to a hydrogen atom bonded to a ring-forming carbon atom of the monovalent heterocyclic group, X A and Y A A hydrogen atom bonded to a nitrogen atom when at least one of the above is NH, and X A and YA One of them is CH 2 and methylene groups represented by the formula:

[0039] "Substituted or unsubstituted alkyl groups" Specific examples (specific example group G3) of the "substituted or unsubstituted alkyl group" described in this specification include the following unsubstituted alkyl group (specific example group G3A) and substituted alkyl group (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 the term "alkyl group" is simply mentioned, it includes both the "unsubstituted alkyl group" and the "substituted alkyl group". The term "substituted alkyl group" refers to a group in which one or more hydrogen atoms in the "unsubstituted alkyl group" are replaced with a substituent. Specific examples of the "substituted alkyl group" include the following "unsubstituted alkyl group" (specific example group G3A) in which one or more hydrogen atoms are replaced with a substituent, and examples of the substituted alkyl group (specific example group G3B). In this specification, the alkyl group in the "unsubstituted alkyl group" refers to a chain-like alkyl group. Therefore, the "unsubstituted alkyl group" includes a straight-chain "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 merely examples, and the "substituted alkyl group" described in this specification also includes a group in which a hydrogen atom of the alkyl group itself in the "substituted alkyl group" in the specific example group G3B is further replaced with a substituent, and a group in which a hydrogen atom of a substituent in the "substituted alkyl group" in the specific example group G3B is further replaced with a substituent.

[0040] Unsubstituted alkyl groups (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 groups (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 group (specific example group G4A) and substituted alkenyl group (specific example group G4B). (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, the term "alkenyl group" simply includes both an "unsubstituted alkenyl group" and a "substituted alkenyl group". The term "substituted alkenyl group" refers to a group in which one or more hydrogen atoms in an "unsubstituted alkenyl group" are replaced with a substituent. Specific examples of the "substituted alkenyl group" include the following "unsubstituted alkenyl group" (specific example group G4A) having a substituent, and examples of substituted alkenyl groups (specific example group G4B). The examples of the "unsubstituted alkenyl group" and the examples of the "substituted alkenyl group" listed here are merely examples, and the "substituted alkenyl group" described in this specification also includes a group in which a hydrogen atom of the alkenyl group itself in the "substituted alkenyl group" in specific example group G4B is further replaced with a substituent, and a group in which a hydrogen atom of a substituent in the "substituted alkenyl group" in specific example group G4B is further replaced with a substituent.

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

[0044] Substituted alkenyl groups (specific example group G4B): 1,3-butanedienyl group, 1-methylvinyl group, 1-methylallyl group, 1,1-dimethylallyl group, 2-methylallyl group, and 1,2-Dimethylallyl group.

[0045] "Substituted or unsubstituted alkynyl groups" 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). (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 term "substituted alkynyl group" refers to an "unsubstituted alkynyl group" in which one or more hydrogen atoms have been replaced with a substituent. Specific examples of the "substituted alkynyl group" include the following "unsubstituted alkynyl groups" (specific example group G5A) in which one or more hydrogen atoms have been replaced with a substituent.

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

[0047] "Substituted or unsubstituted cycloalkyl groups" Specific examples (specific example group G6) of the "substituted or unsubstituted cycloalkyl group" described in this specification include the following unsubstituted cycloalkyl group (specific example group G6A) and substituted cycloalkyl group (specific example group G6B). (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 the term "cycloalkyl group" is simply used, it includes both an "unsubstituted cycloalkyl group" and a "substituted cycloalkyl group". The term "substituted cycloalkyl group" refers to a group in which one or more hydrogen atoms in the "unsubstituted cycloalkyl group" are replaced with a substituent. Specific examples of the "substituted cycloalkyl group" include the following "unsubstituted cycloalkyl group" (specific example group G6A) in which one or more hydrogen atoms are replaced with a substituent, and the examples of the substituted cycloalkyl group (specific example group G6B). The examples of the "unsubstituted cycloalkyl group" and the examples of the "substituted cycloalkyl group" listed here are merely examples, and the "substituted cycloalkyl group" described in this specification also includes a group in the "substituted cycloalkyl group" in the specific example group G6B in which one or more hydrogen atoms bonded to a carbon atom of the cycloalkyl group itself are replaced with a substituent, and a group in the "substituted cycloalkyl group" in the specific example group G6B in which a hydrogen atom of a substituent is further replaced with a substituent.

[0048] Unsubstituted cycloalkyl groups (specific example group G6A): A cyclopropyl group, A cyclobutyl group, Cyclopentyl group, cyclohexyl group, 1-adamantyl group, 2-adamantyl group, 1-norbornyl group, and 2-Norbornyl group.

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

[0050] -Si(R 901 )(R 902 )(R 903 ) a group represented by As described herein, -Si(R 901 )(R 902 )(R 903 Specific examples (specific example group G7) of the group represented by -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) Here, G1 is a "substituted or unsubstituted aryl group" described in specific example group G1. G2 is a "substituted or unsubstituted heterocyclic group" described in specific example group G2. G3 is a "substituted or unsubstituted alkyl group" described in specific example group G3. G6 is a "substituted or unsubstituted cycloalkyl group" described in specific example group G6. The multiple G1s in -Si(G1)(G1)(G1) are the same as or different from each other. The multiple G2s in -Si(G1)(G2)(G2) are the same as or different from each other. The multiple G1s in -Si(G1)(G1)(G2) are the same as or different from each other. The multiple G2s in -Si(G2)(G2)(G2) are the same as or different from each other. The multiple G3s in -Si(G3)(G3)(G3) are the same as or different from each other. The multiple G6s in -Si(G6)(G6)(G6) are the same as or different from each other.

[0051] -O-(R 904 ) a group represented by As described herein, -O-(R904 Specific examples (specific example group G8) of the group represented by -O(G1), -O(G2), -O(G3), and -O(G6) Examples include: Where: G1 is a "substituted or unsubstituted aryl group" described in specific example group G1. G2 is a "substituted or unsubstituted heterocyclic group" described in specific example group G2. G3 is a "substituted or unsubstituted alkyl group" described in specific example group G3. G6 is a "substituted or unsubstituted cycloalkyl group" described in specific example group G6.

[0052] -S-(R 905 ) a group represented by As described herein, -S-(R 905 Specific examples (specific example group G9) of the group represented by -S(G1), -S(G2), -S(G3), and -S(G6) Examples include: Where: G1 is a "substituted or unsubstituted aryl group" described in specific example group G1. G2 is a "substituted or unsubstituted heterocyclic group" described in specific example group G2. G3 is a "substituted or unsubstituted alkyl group" described in specific example group G3. G6 is a "substituted or unsubstituted cycloalkyl group" described in specific example group G6.

[0053] -N(R 906 )(R 907 ) a group represented by As described herein, -N(R 906 )(R 907 Specific examples (specific example group G10) of the group represented by -N(G1)(G1), -N(G2)(G2), -N(G1)(G2), -N(G3)(G3), and -N(G6)(G6) Examples include: Where: G1 is a "substituted or unsubstituted aryl group" described in specific example group G1. G2 is a "substituted or unsubstituted heterocyclic group" described in specific example group G2. G3 is a "substituted or unsubstituted alkyl group" described in specific example group G3. G6 is a "substituted or unsubstituted cycloalkyl group" described in specific example group G6. -The multiple G1's in N(G1)(G1) are the same or different from each other. The multiple G2's in -N(G2)(G2) are the same or different from each other. -The multiple G3's in N(G3)(G3) are the same or different from each other. The multiple G6s in -N(G6)(G6) are the same or different from each other.

[0054] "Halogen atoms" Specific examples of the "halogen atom" described in this specification (specific example group G11) include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.

[0055] "Substituted or unsubstituted fluoroalkyl groups" The term "substituted or unsubstituted fluoroalkyl group" as used herein 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 with a fluorine atom, and also includes a group (perfluoro group) in which all hydrogen atoms bonded to carbon atoms constituting the alkyl group in the "substituted or unsubstituted alkyl group" are replaced with fluorine atoms. The number of carbon atoms in the "unsubstituted fluoroalkyl group" is 1 to 50, preferably 1 to 30, and more preferably 1 to 18, unless otherwise specified in the present specification. The term "substituted fluoroalkyl group" means a group in which one or more hydrogen atoms in the "fluoroalkyl group" are replaced with a substituent. The term "substituted fluoroalkyl group" as used herein also includes a group in which one or more hydrogen atoms bonded to a carbon atom in the alkyl chain in the "substituted fluoroalkyl group" are further replaced with a substituent, and a group in which one or more hydrogen atoms in the substituent in the "substituted fluoroalkyl group" are further replaced with a substituent. Specific examples of the "unsubstituted fluoroalkyl group" include the examples of the group in which one or more hydrogen atoms in the "alkyl group" (specific example group G3) are replaced with a fluorine atom.

[0056] "Substituted or unsubstituted haloalkyl groups" The term "substituted or unsubstituted haloalkyl group" as used herein 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 with a halogen atom, and also includes a group in which all hydrogen atoms bonded to carbon atoms constituting the alkyl group in the "substituted or unsubstituted alkyl group" are replaced with halogen atoms. The number of carbon atoms in the "unsubstituted haloalkyl group" is 1 to 50, preferably 1 to 30, and more preferably 1 to 18, unless otherwise specified in the present specification. The term "substituted haloalkyl group" means a group in which one or more hydrogen atoms in the "haloalkyl group" are replaced with a substituent. The term "substituted haloalkyl group" as used herein also includes a group in which one or more hydrogen atoms bonded to a carbon atom in the alkyl chain in the "substituted haloalkyl group" are further replaced with a substituent, and a group in which one or more hydrogen atoms in the substituent in the "substituted haloalkyl group" are further replaced with a substituent. Specific examples of the "unsubstituted haloalkyl group" include the examples of the group in which one or more hydrogen atoms in the "alkyl group" (specific example group G3) are replaced with a halogen atom. Haloalkyl groups are sometimes referred to as halogenated alkyl groups.

[0057] "Substituted or unsubstituted alkoxy groups" A specific example of the "substituted or unsubstituted alkoxy group" described in this specification is a group represented by -O(G3), where G3 is the "substituted or unsubstituted alkyl group" described in specific example group G3. The number of carbon atoms in the "unsubstituted alkoxy group" is 1 to 50, preferably 1 to 30, and more preferably 1 to 18, unless otherwise specified in this specification.

[0058] "Substituted or unsubstituted alkylthio groups" A specific example of the "substituted or unsubstituted alkylthio group" described in the present specification is a group represented by -S(G3), where G3 is the "substituted or unsubstituted alkyl group" described in the specific example group G3. The number of carbon atoms in the "unsubstituted alkylthio group" is 1 to 50, preferably 1 to 30, and more preferably 1 to 18, unless otherwise specified in the present specification.

[0059] "Substituted or unsubstituted aryloxy group" A specific example of the "substituted or unsubstituted aryloxy group" described in this specification is a group represented by -O(G1), where G1 is a "substituted or unsubstituted aryl group" described in specific example group G1. The number of ring 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" A specific example of the "substituted or unsubstituted arylthio group" described in this specification is a group represented by -S(G1), where G1 is a "substituted or unsubstituted aryl group" described in specific example group G1. The number of ring 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" A specific example of the "trialkylsilyl group" described in this specification is a group represented by -Si(G3)(G3)(G3), where G3 is a "substituted or unsubstituted alkyl group" described in the specific example group G3. The multiple G3s in -Si(G3)(G3)(G3) are the same or different from each other. The number of carbon atoms in 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" A specific example of the "substituted or unsubstituted aralkyl group" described in the present specification is a group represented by -(G3)-(G1), where G3 is a "substituted or unsubstituted alkyl group" described in the specific example group G3, and G1 is a "substituted or unsubstituted aryl group" described in the specific example group G1. Thus, the "aralkyl group" is a group in which a hydrogen atom of an "alkyl group" is replaced with an "aryl group" as a substituent, and is one aspect of a "substituted alkyl group". The "unsubstituted aralkyl group" is an "unsubstituted alkyl group" substituted with an "unsubstituted aryl group", and the carbon number of the "unsubstituted aralkyl group" is 7 to 50, preferably 7 to 30, and more preferably 7 to 18, unless otherwise specified in the present specification. Specific examples of "substituted or unsubstituted aralkyl groups" include benzyl, 1-phenylethyl, 2-phenylethyl, 1-phenylisopropyl, 2-phenylisopropyl, phenyl-t-butyl, α-naphthylmethyl, 1-α-naphthylethyl, 2-α-naphthylethyl, 1-α-naphthylisopropyl, 2-α-naphthylisopropyl, β-naphthylmethyl, 1-β-naphthylethyl, 2-β-naphthylethyl, 1-β-naphthylisopropyl, and 2-β-naphthylisopropyl.

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

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

[0065] In this specification, a carbazolyl group is specifically any of the following groups, unless otherwise specified in the specification.

[0066] [ka]

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

[0068] [ka]

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

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

[0071] [ka]

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

[0073] The substituted or unsubstituted alkyl groups described herein are preferably methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, t-butyl, and the like, unless otherwise specified herein.

[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-mentioned "substituted or unsubstituted aryl group". Specific examples of the "substituted or unsubstituted arylene group" (specific example group G12) 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.

[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 heterocycle from the above-mentioned "substituted or unsubstituted heterocyclic group". Specific examples of the "substituted or unsubstituted divalent heterocyclic group" (specific example group G13) include divalent groups derived by removing one hydrogen atom on the heterocycle from the "substituted or unsubstituted heterocyclic group" described in specific example group G2.

[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 of the "substituted or unsubstituted alkylene group" (specific example group G14) 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.

[0077] The substituted or unsubstituted arylene group described in this specification is preferably any of the groups represented by the following general formulae (TEMP-42) to (TEMP-68), unless otherwise specified in this specification.

[0078] [ka]

[0079] [ka]

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

[0081] [ka]

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

[0083] [ka]

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

[0085] The substituted or unsubstituted divalent heterocyclic group described in this specification is preferably any of the groups represented by the following general formulae (TEMP-69) to (TEMP-102), unless otherwise specified in this specification.

[0086] [ka]

[0087] [ka]

[0088] [ka]

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

[0090] [ka]

[0091] [ka]

[0092] [ka]

[0093] [ka]

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

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

[0096] - "When bonded to form a ring" In this specification, the phrase "one or more of a set consisting of two or more adjacent groups bond to each other to form a substituted or unsubstituted monocycle, bond to each other to form a substituted or unsubstituted fused ring, or are not bonded to each other" means the case where "one or more of a set consisting of two or more adjacent groups bond to each other to form a substituted or unsubstituted monocycle", the case where "one or more of a set consisting of two or more adjacent groups bond to each other to form a substituted or unsubstituted fused ring", and the case where "one or more of a set consisting of two or more adjacent groups are not bonded to each other". In this specification, the cases where "one or more of a set of two or more adjacent rings are bonded to each other to form a substituted or unsubstituted monocyclic ring" and "one or more of a set of two or more adjacent rings are bonded to each other to form a substituted or unsubstituted condensed ring" (hereinafter, these cases may be collectively referred to as "a case where they are bonded to form a ring") will be explained below. The case of an anthracene compound represented by the following general formula (TEMP-103), in which the mother skeleton is an anthracene ring, will be explained as an example.

[0097] [ka]

[0098] For example, R 921 ~R 930 In the case where "one or more pairs of adjacent two or more groups are bonded to each other to form a ring," one pair of adjacent two groups is R 921 and R 922 With R 922 and R 923 With R 923 and R 924 With R 924 and R 930 With R 930 and R 925 With R 925 and R 926 With R 926 and R 927 With R 927 and R 928 With R 928 and R 929 and R 929 and R 921 It is paired with .

[0099] The above "one or more pairs" means that two or more pairs of adjacent two or more groups may simultaneously form a ring. For example, R 921 and R 922 and are bonded to ring Q A At the same time, R 925 and R 926 and are bonded to ring Q B When the above general formula (TEMP-103) is formed, the anthracene compound represented by the general formula (TEMP-104) is represented by the following general formula (TEMP-104).

[0100] [ka]

[0101] The case where a "set of two or more adjacent units" forms a ring includes not only the case where a set of two adjacent units is bonded as in the previous example, but also the case where a set of three or more adjacent units is bonded. For example, R 921 and R 922 and are bonded to ring Q A and R 922 and R 923 and are bonded to ring Q C The three adjacent (R 921 , R 922 and R 923 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 Ring Q C is R 922 Share.

[0102] [ka]

[0103] The "monocyclic ring" or "condensed ring" formed may be a saturated or unsaturated ring as the structure of only the ring formed. Even when "one of the pairs of adjacent two" forms a "monocyclic ring" or a "condensed ring", the "monocyclic ring" or the "condensed ring" may form a saturated or unsaturated ring. For example, the ring Q formed in the general formula (TEMP-104) may be a saturated or unsaturated ring. A and Ring Q B are "monocyclic" or "condensed rings". In addition, the ring Q formed in the general formula (TEMP-105) A , and ring Q C is a "fused ring". The ring Q in the above general formula (TEMP-105) A and Kan Q C That is, Ring Q A and Kan Q C The ring Q in the general formula (TMEP-104) is condensed to form a condensed ring. AIf is a benzene ring, then ring Q A The ring Q in the general formula (TMEP-104) is a monocyclic ring. A If is a naphthalene ring, then ring Q A is a fused ring.

[0104] The term "unsaturated ring" refers to an aromatic hydrocarbon ring or an aromatic heterocyclic ring. The term "saturated ring" refers to an aliphatic hydrocarbon ring or a non-aromatic heterocyclic ring. Specific examples of the aromatic hydrocarbon ring include structures in which the groups given as specific examples in the specific example group G1 are terminated with a hydrogen atom. Specific examples of the aromatic heterocycle include structures in which the aromatic heterocyclic groups exemplified as specific examples in the specific example group G2 are terminated with a hydrogen atom. Specific examples of the aliphatic hydrocarbon ring include structures in which the groups given as specific examples in the specific example group G6 are terminated with a hydrogen atom. The term "form a ring" means that a ring is formed only with a plurality of atoms of the parent skeleton, or with a plurality of atoms of the parent skeleton and one or more optional elements. For example, R 921 and R 922 and are bonded together to form a ring Q A is R 921 The carbon atom of the anthracene skeleton to which R is bonded 922 It means a ring formed by the carbon atom of the anthracene skeleton to which R is bonded and one or more arbitrary elements. 921 and R 922 Todekan Q A In the case where R 921 The carbon atom of the anthracene skeleton to which R is bonded 922 When the carbon atom of the anthracene skeleton to which R is bonded forms a monocyclic unsaturated ring with four carbon atoms, R 921 and R 922 The ring formed by this is a benzene ring.

[0105] Here, unless otherwise specified in the present specification, the "arbitrary element" is preferably at least one element selected from the group consisting of carbon, nitrogen, oxygen, and sulfur. In the arbitrary 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 "arbitrary substituent" described below. When an arbitrary element other than a carbon element is included, the ring formed is a heterocycle. Unless otherwise specified in this specification, the "one or more arbitrary elements" constituting a single ring or a condensed ring is preferably 2 or more and 15 or less, more preferably 3 or more and 12 or less, and even more preferably 3 or more and 5 or less. Unless otherwise specified in this specification, of the "monocyclic ring" and the "condensed ring", the "monocyclic ring" is preferred. Unless otherwise specified in this specification, of the "saturated ring" and the "unsaturated ring", the "unsaturated ring" is preferred. Unless otherwise specified in this specification, a "monocyclic ring" is preferably a benzene ring. Unless otherwise specified in this specification, the "unsaturated ring" is preferably a benzene ring. When "one or more of a set of two or more adjacent rings" "combine with each other to form a substituted or unsubstituted monocyclic ring" or "combine with each other to form a substituted or unsubstituted fused ring", unless otherwise specified in this specification, preferably, one or more of a set of two or more adjacent rings combine with each other to form a substituted or unsubstituted "unsaturated ring" consisting of a plurality of atoms of the parent 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. When the above-mentioned "monocyclic ring" or "condensed ring" has a substituent, specific examples of the substituent are the substituents described in the above-mentioned section "Substituents described in this specification". When the above-mentioned "saturated ring" or "unsaturated ring" has a substituent, the substituent is, for example, the "optional substituent" described below. When the above-mentioned "monocyclic ring" or "condensed ring" has a substituent, specific examples of the substituent are the substituents described in the above section "Substituents described in this specification". The above is an explanation of the case where "one or more pairs of adjacent groups bond with each other to form a substituted or unsubstituted monocyclic ring" and the case where "one or more pairs of adjacent groups bond with each other to form a substituted or unsubstituted fused ring" ("combined to form a ring").

[0107] Substituents in the phrase "substituted or unsubstituted" In one embodiment of the present specification, the substituent in the case of "substituted or unsubstituted" (sometimes referred to as "optional substituent" in the present 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 carbon atoms; -Si(R 901 )(R 902 )(R 903 ), -O-(R 904 ), -S-(R 905 ), -N(R 906 )(R 907 ), Halogen atoms, cyano groups, nitro groups, an unsubstituted aryl group having 6 to 50 ring carbon atoms, and Unsubstituted heterocyclic group having 5 to 50 ring atoms and the like, Here, R 901 ~R 907 are each independently 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 carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or It is a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms. R 901 If there are two or more, there are two or more R 901 are identical or different from each other, R 902 If there are two or more, there are two or more R 902 are identical or different from each other, R 903 If there are two or more, there are two or more R 903 are identical or different from each other, R 904 If there are two or more, there are two or more R 904 are identical or different from each other, R 905 If there are two or more, there are two or more R 905 are identical or different from each other, R 906 If there are two or more, there are two or more R 906 are identical or different from each other, R 907 If there are two or more, there are two or more R 907 are the same or different from each other.

[0108] In one embodiment, the substituent in the above "substituted or unsubstituted" is: an alkyl group having 1 to 50 carbon atoms; an aryl group having 6 to 50 ring carbon atoms, and Heterocyclic groups with 5 to 50 ring atoms is a group selected from the group consisting of:

[0109] In one embodiment, the substituent in the above "substituted or unsubstituted" is: an alkyl group having 1 to 18 carbon atoms; An aryl group having 6 to 18 ring carbon atoms, and Heterocyclic groups with 5 to 18 ring atoms is a group selected from the group consisting of:

[0110] Specific examples of each group of the above optional substituents are the specific examples of the substituents described above in the section "Substituents described in this specification."

[0111] Unless otherwise specified in this specification, any adjacent substituents may be combined with each other to 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, more preferably a benzene ring. Unless otherwise specified in the present specification, the optional substituent may further have a substituent. The substituent that the optional substituent further has is the same as the optional substituent described above.

[0112] In this specification, a numerical range expressed using "AA to BB" means a range including the number AA written before "AA to BB" as the lower limit and the number BB written after "AA to BB" as the upper limit.

[0113] In this specification, a mathematical expression expressed as "A≧B" means that the value of A is equal to the value of B, or the value of A is greater than the value of B. In this specification, a mathematical expression expressed as "A≦B" means that the value of A is equal to the value of B, or the value of A is smaller than the value of B.

[0114] First Embodiment The organic electroluminescence element according to the present embodiment has an anode, a cathode, a light-emitting region disposed between the anode and the cathode, and a hole transport zone disposed between the anode and the light-emitting region, the light-emitting region includes at least one light-emitting layer, the hole transport zone includes a first hole transport layer, a second hole transport layer, and a third hole transport layer, the first hole transport layer, the second hole transport layer, and the third hole transport layer are disposed in this order from the anode side, and the refractive index NM2 is the refractive index NM of the constituent material contained in the first hole transport layer 1 and the refractive index NM of the constituent material contained in the third hole transport layer. 3 the first hole transport layer and the third hole transport layer contain at least one of the same materials; the hole transport zone further includes at least one of a hole injection layer and a fourth hole transport layer; the hole injection layer is disposed between the anode and the first hole transport layer, the hole injection layer contains an acceptor material; the fourth hole transport layer is disposed between the third hole transport layer and the light-emitting region, the fourth hole transport layer contains one or more compounds having an ionization potential of 5.6 eV or more; and the fourth hole transport layer has a thickness of 15 nm or less.

[0115] In the organic EL element of this embodiment, the refractive index NM of the constituent material contained in the second hole transport layer 2 is the refractive index NM of the constituent material contained in the first hole transport layer 1 That is, the first hole transport layer and the second hole transport layer satisfy the relationship of the following formula (Number N1). NM 2 >NM 1 …(Number N1)

[0116] In the organic EL element of this embodiment, the refractive index NM of the constituent material contained in the second hole transport layer 2 is the refractive index NM of the constituent material contained in the third hole transport layer 3 That is, the second hole transport layer and the third hole transport layer satisfy the relationship of the following formula (Number N2). NM 2 >NM 3 …(Number N2)

[0117] The refractive index NM of the constituent material contained in the first hole transport layer 1 When the first hole transport layer contains one type of compound, the refractive index NM corresponds to the refractive index of the one type of compound, and when the first hole transport layer contains multiple types of compounds, the refractive index NM corresponds to the refractive index of a mixture containing the multiple types of compounds. 2 , refractive index NM 3The refractive index of the constituent materials of the other layers is also expressed as NM 1 The refractive index can be measured by the measurement method described in the Examples below. In this specification, the refractive index of the material to be measured is the value of the refractive index at 2.7 eV in the substrate parallel direction (ordinary direction) measured by multi-angle incident spectroscopic ellipsometry. The refractive index at 2.7 eV corresponds to the refractive index at 460 nm.

[0118] According to this embodiment, the performance of the organic EL element can be improved. In the organic EL element of this embodiment, the refractive index NM 2 is the refractive index NM of the constituent material contained in the first hole transport layer 1 and the refractive index NM of the constituent material contained in the third hole transport layer. 3 In this manner, by disposing the low refractive index layer, the high refractive index layer, and the low refractive index layer in this order from the anode side in the hole transport region, the light extraction efficiency of the organic EL element of this embodiment is improved. Although an increase in the number of layers constituting the hole transport zone usually leads to a concern of a decrease in mass productivity of the organic EL element, in the organic EL element of the present embodiment, the first hole transport layer and the third hole transport layer contain at least one of the same materials, and therefore a common material can be used in the first hole transport layer and the third hole transport layer, thereby suppressing a decrease in mass productivity. From the viewpoint of the device performance of the organic EL device, when the hole transport zone is to be composed of three layers, the first hole transport layer, the second hole transport layer, and the third hole transport layer, the first hole transport layer arranged on the anode side is required to have the performance as a hole injection layer, and the third hole transport layer arranged on the light emitting region side is required to have the performance as an electron blocking layer. However, there is no material that has both the performance as a hole injection layer and the performance as an electron blocking layer. Therefore, the device performance is improved by having the hole transport zone of the organic EL device of this embodiment have one or both of the hole injection layer and the fourth hole transport layer in addition to the first hole transport layer, the second hole transport layer, and the third hole transport layer. Specifically, the driving voltage is reduced, the luminous efficiency is improved, and the device life is extended. As described above, according to the present embodiment, it is possible to provide an organic EL element in which a decrease in mass productivity is suppressed and element performance is improved.

[0119] <Hole transport band> The region of organic layers disposed between the anode and the light-emitting region is referred to herein as the hole-transporting zone.

[0120] The hole transport zone of the organic EL device of this embodiment includes at least one of a hole injection layer and a fourth hole transport layer in addition to the first hole transport layer, the second hole transport layer, and the third hole transport layer. In one aspect of the organic EL element of this embodiment, the hole transport zone includes a hole injection layer, a first hole transport layer, a second hole transport layer, and a third hole transport layer, in this order from the anode side. In one aspect of the organic EL element of this embodiment, the hole transport zone includes a first hole transport layer, a second hole transport layer, a third hole transport layer, and a fourth hole transport layer, in this order from the anode side. In one aspect of the organic EL element of this embodiment, the hole transport zone includes a hole injection layer, a first hole transport layer, a second hole transport layer, a third hole transport layer, and a fourth hole transport layer, in this order from the anode side.

[0121] In one aspect of the organic EL element of this embodiment, the anode and the hole injection layer are in direct contact with each other. In one aspect of the organic EL element of this embodiment, the hole injection layer and the first hole transport layer are in direct contact with each other. In one aspect of the organic EL element of this embodiment, the first hole transport layer and the second hole transport layer are in direct contact with each other. In one aspect of the organic EL element of this embodiment, the second hole transport layer and the third hole transport layer are in direct contact with each other. In one aspect of the organic EL element of this embodiment, the third hole transport layer and the fourth hole transport layer are in direct contact with each other. In one aspect of the organic EL device of this embodiment, the fourth hole transport layer and the light-emitting region are in direct contact with each other.

[0122] In one aspect of the organic EL element of the present embodiment, the refractive index NM A and the refractive index NM of the constituent material contained in the fourth hole transport layer. 4 At least one of the refractive index NM 2 or the same as the refractive index NM 2 Greater than.

[0123] In one aspect of the organic EL element of this embodiment, the hole transport region includes a hole injection layer. When the hole transport region includes a hole injection layer, the refractive index NM A and the refractive index NM of the constituent material contained in the second hole transport layer. 2 satisfies the relationship of the following formula (Number N3). NM A ≧NM 2 …(Number N3)

[0124] In one aspect of the organic EL element of the present embodiment, when the hole transport region includes a fourth hole transport layer, the refractive index NM 4 and the refractive index NM of the constituent material contained in the second hole transport layer. 2 satisfies the relationship of the following formula (Number N4). NM 4 ≧NM 2 …(Math N4)

[0125] In one aspect of the organic EL element of the present embodiment, the total thickness of the hole transport zone is 110 nm or more and 150 nm or less. In one aspect of the organic EL element of the present embodiment, the total thickness of the hole transport zone is 120 nm or more and 140 nm or less.

[0126] In one aspect of the organic EL element of this embodiment, the first hole transport layer, the second hole transport layer, and the third hole transport layer each have a thickness independently of each other of 20 nm or more.

[0127] In one aspect of the organic EL element of this embodiment, the total thickness of the hole injection layer and the first hole transport layer is 20 nm or more.

[0128] In one aspect of the organic EL element of this embodiment, the ratio of the total thickness of the hole injection layer and the first hole transport layer to the thickness of the third hole transport layer is 1:1.5 to 1.5:1.

[0129] In one aspect of the organic EL element of this embodiment, the ratio of the total thickness of the hole injection layer and the first hole transport layer to the thickness of the third hole transport layer is 1:1.3 to 1.3:1.

[0130] In one aspect of the organic EL element of this embodiment, the ratio of the total thickness of the hole injection layer and the first hole transport layer to the thickness of the second hole transport layer is 1:1.5 to 1:2.5.

[0131] In one aspect of the organic EL element of this embodiment, the ratio of the thickness of the third hole transport layer to the thickness of the second hole transport layer is 1:1.5 to 1:2.5.

[0132] In one aspect of the organic EL element of this embodiment, the ratio of the total thickness of the hole injection layer and the first hole transport layer to the thickness of the second hole transport layer and the thickness of the third hole transport layer is 1:1.5:1 to 1:2.5:1.

[0133] In one aspect of the organic EL element of this embodiment, the ratio of the total thickness of the hole injection layer and the first hole transport layer to the thickness of the second hole transport layer and the thickness of the third hole transport layer is 1:1.7:1 to 1:2.2:1.

[0134] In one aspect of the organic EL element of this embodiment, the ratio of the thickness of the first hole transport layer to the thickness of the second hole transport layer to the thickness of the third hole transport layer is 1:1.5:1 to 1:2.5:1.

[0135] In one aspect of the organic EL element of this embodiment, the ratio of the thickness of the first hole transport layer to the thickness of the second hole transport layer to the thickness of the third hole transport layer is 1:1.7:1 to 1:2.2:1.

[0136] In one aspect of the organic EL element of this embodiment, the thickness of the hole injection layer is 20 nm or less. In one aspect of the organic EL element of this embodiment, the thickness of the hole injection layer is 3 nm or more.

[0137] In one aspect of the organic EL device of this embodiment, the fourth hole transport layer is an electron blocking layer. The electron blocking layer is preferably a layer that transports holes and prevents electrons from reaching a layer (eg, a hole transport layer) that is closer to the anode than the electron blocking layer. In one aspect of the organic EL element of the present embodiment, the fourth hole transport layer may be a layer that prevents excitons generated in the light-emitting layer from migrating to a layer closer to the anode than the fourth hole transport layer (e.g., a hole transport layer and a hole injection layer, etc.) so that excitation energy does not leak from the light-emitting layer to a peripheral layer.

[0138] In the organic EL element of this embodiment, the fourth hole transport layer has a thickness of 15 nm or less. In one aspect of the organic EL element of this embodiment, the fourth hole transport layer has a thickness of 10 nm or less. In one aspect of the organic EL element of this embodiment, the fourth hole transport layer has a thickness of 3 nm or more.

[0139] In one aspect of the organic EL element of the present embodiment, the fourth hole transport layer has a thickness smaller than that of the third hole transport layer. The organic EL element of the present embodiment is considered to have a long life due to the inclusion of the fourth hole transport layer (preferably the electron blocking layer) having a thickness smaller than that of the third hole transport layer.

[0140] (Hole transport band material) In one aspect of the organic EL device of this embodiment, the first hole transport layer contains a first hole transport zone material, the second hole transport layer contains a second hole transport zone material, and the third hole transport layer contains a third hole transport zone material. The first hole transport zone material and the third hole transport zone material are the same or different from each other. The first hole transport zone material and the second hole transport zone material are different from each other. The third hole transport zone material and the second hole transport zone material are different from each other.

[0141] The first hole transport region material is one of the constituent materials contained in the first hole transport layer. The first hole transport layer may contain only the first hole transport region material, or may contain other materials. The second hole transport region material is one of the constituent materials contained in the second hole transport layer. The second hole transport layer may contain only the second hole transport region material, or may contain other materials. The third hole transport region material is one of the constituent materials contained in the third hole transport layer. The third hole transport layer may contain only the third hole transport region material, or may contain other materials.

[0142] In one aspect of the organic EL device of this embodiment, the first hole transport layer and the third hole transport layer preferably contain the same constituent material, and the refractive index and thickness of the first hole transport layer are preferably the same as or close to those of the third hole transport layer.

[0143] In one aspect of the organic EL device of this embodiment, when the hole-transporting zone includes a hole-injection layer, the hole-injection layer contains an acceptor material. In one aspect of the organic EL device of the present embodiment, the hole injection layer contains an acceptor material and a first organic material, the acceptor material and the first organic material being different from each other. In one aspect of the organic EL device of this embodiment, the hole injection layer may be composed of only one material (that is, the acceptor material).

[0144] In one aspect of the organic EL device of the present embodiment, the acceptor material and the first organic material are compounds different from the second hole transporting region material. In one aspect of the organic EL device of this embodiment, the first hole transporting region material and the first organic material may be different compounds or the same compound. In one aspect of the organic EL device of this embodiment, the third hole transporting region material and the first organic material may be different compounds or the same compound.

[0145] In one aspect of the organic EL element of this embodiment, when the hole transport region includes a fourth hole transport layer, the fourth hole transport layer contains a fourth hole transport region material. The fourth hole transport region material is one of the constituent materials contained in the fourth hole transport layer. The fourth hole transport layer may contain only the fourth hole transport region material, or may contain other materials.

[0146] In the organic EL device of this embodiment, the first hole transport layer and the third hole transport layer contain at least one of the same materials. An example of an embodiment that satisfies this condition is an embodiment in which the first hole transport layer contains two compounds, AA and AB, and the third hole transport layer contains one compound, AA, when the compounds AA and AB are different from each other. In this embodiment, the first hole transport layer and the third hole transport layer contain the same material with respect to the compound AA, and therefore the condition is satisfied. The condition is also satisfied when both the first hole transport layer and the third hole transport layer contain only the compound AA.

[0147] In one aspect of the organic EL device of this embodiment, the compounds contained in the first hole transport layer and the third hole transport layer are different from the compound contained in the second hole transport layer. An example of an embodiment that satisfies this condition is when the compound CA, the compound CB, the compound AA, and the compound AB are different compounds, and the second hole transport layer contains one type of compound AA, and the first hole transport layer contains two types of compounds CA and CB. In addition, for example, when the second hole transport layer contains two types of compounds AA and AB, and the first hole transport layer contains two types of compounds CA and CB, this is also an embodiment that satisfies the condition. On the other hand, for example, when the second hole transport layer contains one type of compound AA, and the first hole transport layer contains two types of compounds CA and AA, the first hole transport layer and the second hole transport layer contain the same compound with respect to the compound AA, and therefore the condition is not satisfied. The compounds contained in the third hole transport layer and the second hole transport layer are the same as those in the example of the first hole transport layer and the second hole transport layer.

[0148] In one aspect of the organic EL element of this embodiment, at least one of the highest occupied molecular orbital energy level HOMO (cHT1) of the first hole transport band material and the highest occupied molecular orbital energy level HOMO (cHT3) of the third hole transport band material is −5.6 eV or less.

[0149] In one aspect of the organic EL element of this embodiment, the absolute value of the difference between the energy level of the highest occupied molecular orbital (HOMO(cHT2)) of the second hole transport band material and the energy level of the highest occupied molecular orbital (HOMO(cHT3)) of the third hole transport band material satisfies the relationship of the following mathematical formula (Math. B1). |HOMO(cHT2)-HOMO(cHT3)|≦0.3 …(Number B1)

[0150] In one aspect of the organic EL element of the present embodiment, at least one of the hole mobility μh(cHT1) of the first hole transport zone material, the hole mobility μh(cHT2) of the second hole transport zone material, and the hole mobility μh(cHT3) of the third hole transport zone material is less than or equal to 1.0×10 -5 cm 2 / Vs is greater.

[0151] In one aspect of the organic EL device of this embodiment, the hole transport zone includes a first mixed layer between the first hole transport layer and the second hole transport layer, the first mixed layer containing the first hole transport zone material and the second hole transport zone material. In one aspect of the organic EL element of this embodiment, the thickness of the first mixed layer may be 10 nm or more. In one aspect of the organic EL element of this embodiment, the thickness of the first mixed layer is 50 nm or less. In one aspect of the organic EL element of this embodiment, the thickness of the first mixed layer is thinner than the thickness of the first hole transport layer and thinner than the thickness of the second hole transport layer. In one aspect of the organic EL element of the present embodiment, when the first hole transport layer and the second hole transport layer are successively 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.

[0152] In one aspect of the organic EL device of this embodiment, the hole transport zone includes a second mixed layer between the second hole transport layer and the third hole transport layer, the second mixed layer containing the second hole transport zone material and the third hole transport zone material. In one aspect of the organic EL element of this embodiment, the thickness of the second mixed layer may be 10 nm or more. In one aspect of the organic EL element of this embodiment, the thickness of the second mixed layer is 50 nm or less. In one aspect of the organic EL element of this embodiment, the thickness of the second mixed layer is thinner than the thickness of the second hole transport layer and thinner than the thickness of the third hole transport layer. In one aspect of the organic EL element of the present embodiment, when the second hole transport layer and the third hole transport layer are successively formed in the same film formation chamber, a second mixed layer may be formed between the second hole transport layer and the third hole transport layer.

[0153] In one aspect of the organic EL device of the present embodiment, the first hole transport zone material, the second hole transport zone material, the third hole transport zone material, the fourth hole transport zone material and the first organic 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.

[0154] In one aspect of the organic EL device of this embodiment, the second hole transporting zone material is a monoamine compound.

[0155] In one aspect of the organic EL device of this embodiment, the third hole transporting zone material is a monoamine compound.

[0156] In the monoamine compounds and diamine compounds, the nitrogen atom of the amino group is not a ring-forming atom. When the nitrogen atom is a ring-forming atom of a carbazole ring, an azine ring, or the like, the nitrogen atom is not a nitrogen atom serving as an amino group. For example, the following compound HT-X contains two nitrogen atoms in the molecule, but one of the nitrogen atoms in HT-X is a ring-forming atom of a carbazole ring, and the other nitrogen atom is not a ring-forming atom but a nitrogen atom serving 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 compound HT-Y shown below is also a monoamine compound having a structure in which a 9-carbazolyl group is bonded to the nitrogen atom of an amino group via a linking group.

[0157] [ka]

[0158] (First, second and third hole transporting zone materials) In one aspect of the organic EL device of the present embodiment, the first hole transport region material, the second hole transport region material, and the third hole transport region material are each independently at least one compound selected from the group consisting of compounds represented by the following general formula (C1) and compounds represented by the following general formula (C3):

[0159] In one aspect of the organic EL element of the present embodiment, the first hole transport layer, the second hole transport layer, and the third hole transport layer may each contain a compound represented by the following general formula (C1), but the compound contained in the second hole transport layer has a different molecular structure from the compound contained in the first hole transport layer, and the compound contained in the second hole transport layer has a different molecular structure from the compound contained in the third hole transport layer. In one aspect of the organic EL element of the present embodiment, the first hole transport layer, the second hole transport layer, and the third hole transport layer may each contain a compound represented by the following general formula (C3), but the compound contained in the second hole transport layer has a different molecular structure from the compound contained in the first hole transport layer, and the compound contained in the second hole transport layer has a different molecular structure from the compound contained in the third hole transport layer.

[0160] [ka]

[0161] (In the general formula (C1), Ar 311 , Ar 312 and Ar 313 are each independently a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms, or -Si(R C1 )(R C2 )(R C3 ) and R C1 , R C2 and R C3 each independently represents a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, R C1 If there are multiple R C1 are identical or different from each other, R C2 If there are multiple R C2 are identical or different from each other, R C3 If there are multiple R C3 are identical or different from each other, L D1 , L D2 and L D3 are each independently Single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or It is a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms.

[0162] [ka]

[0163] (In the general formula (C3), L C1 , L C2 , L C3 and LC4 are each independently Single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms, n2 is 1, 2, 3 or 4; If n2 is 1, L C5 teeth, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms, When n2 is 2, 3, or 4, multiple L C5 are identical or different from each other, When n2 is 2, 3, or 4, multiple L C5 teeth, combine together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, L does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring. C5 teeth, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms, Ar 131 , Ar 132 , Ar 133 and Ar 134 are each independently a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms, or -Si(R C1 )(R C2 )(R C3 ) and R C1 , R C2 and R C3 each independently represents a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, RC1 If there are multiple R C1 are identical or different from each other, R C2 If there are multiple R C2 are identical or different from each other, R C3 If there are multiple R C3 are identical or different from each other, 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.

[0164] [ka]

[0165] (In the general formulas (C3-1) and (C3-2), * represents L C5 ) (In the compound represented by the general formula (C3), the substituent in the case of "substituted or unsubstituted" is -N(R C6 )(R C7 ), but not a group represented by R C6 and R C7 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 carbon atoms, 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.

[0166] In one aspect of the organic EL element of the present embodiment, the compound represented by the general formula (C1) is at least any one compound selected from the group consisting of a compound represented by the following general formula (cHT3-1), a compound represented by the general formula (cHT3-2), a compound represented by the general formula (cHT3-3), and a compound represented by the general formula (cHT3-4).

[0167] [ka]

[0168] [ka]

[0169] [ka]

[0170] [ka]

[0171] (In the general formula (cHT3-1), general formula (cHT3-2), general formula (cHT3-3) and general formula (cHT3-4), Ar 312 , Ar 313 , L D1 , L D2 and L D3 each independently represents Ar 312 , Ar 313 , L D1 , L D2 and L D3 is synonymous with Ar 311 is a group represented by any one of the following general formulas (1-a), (1-b), (1-c), and (1-d), R D20 ~R D24 Among the groups of two or more adjacent joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R D31 ~R D38 Among the groups of two or more adjacent joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R D40 ~R D44 Among the groups of two or more adjacent joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, X 3 is an oxygen atom, a sulfur atom or a C(R D45 )(R D46 ) and R D45 and R D46 A set consisting of joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R D25 R does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring. D20 ~R D24 , R D31 ~R D38 , R D40 ~R D44 , R D45 And R D46 are each independently Hydrogen atoms, 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 carbon atoms, -Si(R 901 )(R 902 )(R 903 ) a group represented by -O-(R 904 ) a group represented by 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, In the compounds represented by the general formula (cHT3-1), the general formula (cHT3-2), the general formula (cHT3-3), and the general formula (cHT3-4), R 901 ~R 904 are each independently Hydrogen atoms, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms; a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, 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, R 901 If there are multiple R 901 are identical or different from each other, R 902 If there are multiple R 902 are identical or different from each other, R 903 If there are multiple R 903 are identical or different from each other, R 904 If there are multiple R 904 are either identical or different.)

[0172] [ka]

[0173] (In the general formula (1-a), R 51 ~R 55 Any pair of adjacent two or more of the R 51 ~R 55 each independently represents a hydrogen atom or a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, ** is L D1 )

[0174] [ka]

[0175] (In the general formula (1-b), R 61 ~R 68 One of them is a single bond that bonds to *b, *R that is not a single bond attached to b 61 ~R 68 Any pair of adjacent two or more of the *R that is not a single bond attached to b 61 ~R 68 each independently represents 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 carbon atoms, ** is L D1 )

[0176] [ka]

[0177] (In the general formula (1-c), R 71 ~R 80 One of them is a single bond that connects to *d, *R that is not a single bond attached to d 71 ~R 80 Any pair of adjacent two or more of the *R that is not a single bond attached to d 71 ~R 80 each independently represents 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 carbon atoms, ** is L D1 )

[0178] [ka]

[0179] (In the general formula (1-d), R141 ~R 145 One of them is a single bond that bonds to *h1, and R 141 ~R 145 The other one of them is a single bond that bonds to *h2, R that is not a single bond bonded to *h1 and is not a single bond bonded to *h2 141 ~R 145 Any pair of adjacent two or more of the R 151 ~R 155 Among the groups of two or more adjacent joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R 161 ~R 165 Among the groups of two or more adjacent joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R that is not a single bond bonded to *h1 and is not a single bond bonded to *h2 141 ~R 145 and R which does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring. 151 ~R 155 and R 161 ~R 165 each independently represents 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 carbon atoms, ** is L D1 )

[0180] In one aspect of the organic EL element of the present embodiment, in the compounds represented by the general formulae (cHT3-1), (cHT3-2), (cHT3-3), and (cHT3-4), the substituent in the case of being “substituted or unsubstituted” is —N(RC6 )(R C7 ), but not a group represented by R C6 and R C7 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 carbon atoms, 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.

[0181] In one aspect of the organic EL device of this embodiment, the compound represented by the general formula (C1) is a compound represented by the following general formula (C11).

[0182] [ka]

[0183] (In the above general formula (C11), Ar 111 , Ar 112 , Ar 113 and L A3 respectively represent Ar 311 , Ar 312 , Ar 313 and L D3 and n1 and n2 are 4; Multiple R C11 are identical or different from each other, Multiple R C11 Among the groups of two or more adjacent joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, Multiple R C12 are identical or different from each other, Multiple R C12 Among the groups of two or more adjacent joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring. C11 and R C12 are each independently Hydrogen atom, Cyano group, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms; a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, -Si(R 901 )(R 902 )(R 903 ), -O-(R 904 ), a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or It is a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms.

[0184] In the compound represented by the general formula (C1), Ar 311 , Ar 312 and Ar 313 At least one of these is preferably a group selected from the group consisting of groups represented by the following general formulae (21a), (21b), (21c), (21d), and (21e). In the compound represented by the general formula (C11), Ar 111 , Ar 112 and Ar 113 At least one of these is preferably a group selected from the group consisting of groups represented by the following general formulae (21a), (21b), (21c), (21d), and (21e).

[0185] [ka]

[0186] (In the general formula (21a), general formula (21b), general formula (21c), general formula (21d) and general formula (21e), X 21is NR 21 , C.R. 22 R 23 , an oxygen atom or a sulfur atom; X 21 If there are multiple X 21 are identical or different from each other, X 21 CR 22 R 23 If R 22 and R 23 The set consisting of joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R 21 and R which does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring. 22 and R 23 are each independently Hydrogen atoms, 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 carbon atoms, -Si(R 901 )(R 902 )(R 903 ) a group represented by -O-(R 904 ) a group represented by 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, R 211 ~R 218 Among the groups of two or more adjacent joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring. 211 ~R 218 are each independently Hydrogen atoms, 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 carbon atoms, -Si(R 901 )(R 902 )(R 903 ) a group represented by -O-(R 904 ) a group represented by 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, In the general formula (21a), the general formula (21b), the general formula (21c), the general formula (21d) and the general formula (21e), * each independently represents L A1 , L A2 and L A3 )

[0187] Ar which is not a group selected from the group consisting of groups represented by the general formula (21a), the general formula (21b), the general formula (21c), the general formula (21d), and the general formula (21e) 111 , Ar 112 and Ar 113 are each independently preferably a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, and more preferably a substituted or unsubstituted phenyl group or a substituted or unsubstituted biphenyl group.

[0188] In the compound represented by the general formula (C1), Ar 311 , Ar 312 and Ar 313two of the above are groups selected from the group consisting of groups represented by general formula (21a), general formula (21b), general formula (21c), general formula (21d), and general formula (21e), and Ar 311 , Ar 312 and Ar 313 It is also preferable that the other of these is a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms.

[0189] In the compound represented by the general formula (C11), Ar 111 , Ar 112 and Ar 113 two of the above are groups selected from the group consisting of groups represented by general formula (21a), general formula (21b), general formula (21c), general formula (21d), and general formula (21e), and Ar 111 , Ar 112 and Ar 113 It is also preferable that the other of these is a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms.

[0190] In the compound represented by the general formula (C1), Ar 311 , Ar 312 and Ar 313 one of the groups represented by general formula (21a), general formula (21b), general formula (21c), general formula (21d), and general formula (21e) is selected from the group consisting of groups represented by Ar 311 , Ar 312 and Ar 313 It is also preferred that the other two of these are substituted or unsubstituted aryl groups having 6 to 30 ring carbon atoms. In the compound represented by the general formula (C11), Ar 111 , Ar 112 and Ar 113 one of the groups represented by general formula (21a), general formula (21b), general formula (21c), general formula (21d), and general formula (21e) is selected from the group consisting of groups represented by Ar 111 , Ar 112 and Ar 113 It is also preferred that the other two of these are substituted or unsubstituted aryl groups having 6 to 30 ring carbon atoms.

[0191] In one aspect of the organic EL element of this embodiment, the second hole transport region material contained in the second hole transport layer is at least one compound selected from the group consisting of compounds represented by the following general formula (cHT2-1), compounds represented by the general formula (cHT2-2), and compounds represented by the general formula (cHT2-3).

[0192] [ka]

[0193] [ka]

[0194] [ka]

[0195] (In the general formula (cHT2-1), general formula (cHT2-2) and general formula (cHT2-3), Ar 112 , Ar 113 , Ar 121 ,Ar 122 , Ar 123 and Ar 124 are each independently a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms, or -Si(R C1 )(R C2 )(R C3 ) and R C1 , R C2 and R C3 each independently represents a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, R C1 If there are multiple R C1 are identical or different from each other, R C2If there are multiple R C2 are identical or different from each other, R C3 If there are multiple R C3 are identical or different from each other, L A1 , L A2 , L A3 , L B1 , L B2 , L B3 and L B4 are each independently Single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms, nb is 1, 2, 3 or 4; If nb is 1, L B5 teeth, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms, When nb is 2, 3, or 4, multiple L B5 are identical or different from each other, When nb is 2, 3, or 4, multiple L B5 teeth, combine together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, L does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring. B5 teeth, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms, R A35 and R A36 The set consisting of joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R A25 and R which does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring. A35 and R A36 are each independently Hydrogen atoms, 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 carbon atoms, -Si(R 901 )(R 902 )(R 903 ) a group represented by -O-(R 904 ) a group represented by 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, R A20 ~R A24 Among the groups of two or more adjacent joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R A30 ~R A34 Among the groups of two or more adjacent joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring. A20 ~R A24 And R A30 ~R A34 are each independently Hydrogen atoms, 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 carbon atoms, -Si(R 901 )(R 902 )(R 903 ) a group represented by -O-(R 904 ) a group represented by 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, In the compounds represented by the general formula (cHT2-1), the general formula (cHT2-2) and the general formula (cHT2-3), R 901 ~R 904 are each independently 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 carbon atoms, 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, R 901 If there are multiple R 901 are identical or different from each other, R 902 If there are multiple R 902 are identical or different from each other, R 903 If there are multiple R 903 are identical or different from each other, R 904 If there are multiple R 904 are either identical or different.)

[0196] In one aspect of the organic EL element of this embodiment, the second hole transport layer contains at least one compound selected from the group consisting of the compound represented by the general formula (cHT2-1), the compound represented by the general formula (cHT2-2), and the compound represented by the general formula (cHT2-3), and the third hole transport layer contains at least one compound selected from the group consisting of the compound represented by the 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).

[0197] In one aspect of the organic EL element of the present embodiment, the second hole transport region material has at least one group selected from the group consisting of a group represented by the following general formula (2-a), a group represented by the general formula (2-b), a group represented by the general formula (2-c), a group represented by the general formula (2-d), a group represented by the general formula (2-e), and a group represented by the general formula (2-f).

[0198] In one aspect of the organic EL element of the present embodiment, the second hole transport region material is a monoamine compound having one substituted or unsubstituted amino group in the molecule, and a group represented by the following general formula (2-a), a group represented by the general formula (2-b), a group represented by the general formula (2-c), a group represented by the general formula (2-d), a group represented by the general formula (2-e), and a group represented by the general formula (2-f) are each independently bonded to a nitrogen atom of the amino group of the monoamine compound directly, via a phenylene group, or via a biphenylene group.

[0199] [ka]

[0200] (In the general formula (2-a), R 251 ~R 255 Any pair of adjacent two or more of the R 251 ~R 255 are each independently A hydrogen atom, or a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms; ** indicates the bond position.)

[0201] [ka]

[0202] (In the general formula (2-b), R 261 ~R 268 One of them is a single bond that bonds to *b, *R that is not a single bond attached to b 261 ~R 268 Any pair of adjacent two or more of the *R that is not a single bond attached to b 261 ~R 268 are each independently 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 carbon atoms, ** indicates the bond position.)

[0203] [ka]

[0204] (In the general formula (2-c), R 271 ~R 282 One of them is a single bond that bonds to *c, *R that is not a single bond attached to c 271 ~R 282 Any pair of adjacent two or more of the *R that is not a single bond attached to c 271 ~R 282 are each independently 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 carbon atoms, ** indicates the bond position.)

[0205] [ka]

[0206] (In the general formula (2-d), R 291 ~R 300 One of them is a single bond that connects to *d, *R that is not a single bond attached to d 291 ~R 300 Any pair of adjacent two or more of the *R that is not a single bond attached to d 291 ~R 300 are each independently 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 carbon atoms, ** indicates the bond position.)

[0207] [ka]

[0208] (In the general formula (2-e), Z 3 is an oxygen atom, a sulfur atom, and NR 319 or C(R 320 )(R 321 ) and R 311 ~R 321 one of is a single bond bonded to *e, or R 311 ~R 318 Any carbon atom of the following substituted or unsubstituted benzene ring formed by combining two or more adjacent pairs of the following is bonded to *e by a single bond, *R that is not a single bond attached to e 311 ~R 318A pair of two or more adjacent combine with each other to form a substituted or unsubstituted benzene ring, or Not bonded to each other, * R which is not a single bond bonded to e and does not form the substituted or unsubstituted benzene ring 311 ~R 318 are each independently Hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms; a substituted or unsubstituted aryl group having 6 to 12 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 10 ring atoms, *R that is not a single bond attached to e 319 teeth, 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 carbon atoms, *R that is not a single bond attached to e 320 and R 321 A set consisting of joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, * R which is not a single bond bonded to e, 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 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 carbon atoms, ** indicates the bond position.)

[0209] [ka]

[0210] (In the general formula (2-f), R 341 ~R 345 One of them is a single bond that bonds to *h1, and R 341 ~R 345 The other one of them is a single bond that bonds to *h2, R that is not a single bond bonded to *h1 and is not a single bond bonded to *h2 341 ~R 345 Any pair of adjacent two or more of the R 351 ~R 355 Among the groups of two or more adjacent joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R 361 ~R 365 Among the groups of two or more adjacent joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R that is not a single bond bonded to *h1 and is not a single bond bonded 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 are each independently 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 carbon atoms, ** indicates the bond position.)

[0211] In one aspect of the organic EL element of the present embodiment, the group represented by the general formula (2-a), the group represented by the general formula (2-b), the group represented by the general formula (2-c), the group represented by the general formula (2-d), the group represented by the general formula (2-e), and the group represented by the general formula (2-f) are each independently bonded to a nitrogen atom of an amino group of the monoamine compound directly, via a phenylene group, or via a biphenylene group.

[0212] In one aspect of the organic EL element of the present embodiment, the group represented by general formula (2-e) is a group represented by the following general formula (2-e1), general formula (2-e2), or general formula (2-e3).

[0213] [ka]

[0214] (In the general formula (2-e1), general formula (2-e2) and general formula (2-e3), Z 3 is an oxygen atom, a sulfur atom, and NR 319 or C(R 320 )(R 321 ) and R 311 ~R 325 One of the bonds is a single bond that bonds to *e, *R that is not a single bond attached to e 311 ~R 318 And R 322 ~R 325 are each independently Hydrogen atoms, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms; a substituted or unsubstituted aryl group having 6 to 12 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 10 ring atoms, *R that is not a single bond attached to e 319 teeth, Hydrogen atoms, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 12 ring carbon atoms, *R that is not a single bond attached to e 320 and R 321 A set consisting of joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, * R which is not a single bond bonded to e, 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 Hydrogen atoms, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 12 ring carbon atoms, ** indicates the bond position.)

[0215] In one aspect of the organic EL device of this embodiment, the second hole transporting region material is a compound that does not contain a thiophene ring in the molecule.

[0216] (first organic material) In one aspect of the organic EL element of this embodiment, the first organic material contained in the hole injection layer is at least one compound selected from the group consisting of the compound represented by general formula (C1), the compound represented by general formula (cHT2-1), the compound represented by general formula (cHT2-2), and the compound represented by general formula (cHT2-3).

[0217] In one aspect of the organic EL element of the present embodiment, the first organic material contained in the hole injection layer is a monoamine compound.

[0218] In one aspect of the organic EL element of the present embodiment, the first organic material has at least one group selected from the group consisting of a group represented by general formula (2-a), a group represented by general formula (2-b), a group represented by general formula (2-c), a group represented by general formula (2-d), a group represented by general formula (2-e), and a group represented by general formula (2-f).

[0219] In one aspect of the organic EL element of the present embodiment, the first organic material is a monoamine compound having one substituted or unsubstituted amino group in the molecule, and the group represented by the general formula (2-a), the group represented by the general formula (2-b), the group represented by the general formula (2-c), the group represented by the general formula (2-d), the group represented by the general formula (2-e), and the group represented by the general formula (2-f) are each independently bonded to a nitrogen atom of the amino group of the monoamine compound directly, via a phenylene group, or via a biphenylene group.

[0220] In one aspect of the organic EL element of this embodiment, the first organic material is any compound selected from the group consisting of the compounds represented by the general formula (cHT2-1) and the compounds represented by the general formula (cHT2-2).

[0221] In one aspect of the organic EL element of the present embodiment, the compound represented by the general formula (cHT2-1) and the compound represented by the general formula (cHT2-2) as the first organic material are monoamine compounds.

[0222] (Fourth Hole Transporting Zone Material) In one aspect of the organic EL device of this embodiment, the fourth hole transport layer comprises a fourth hole transport zone material.

[0223] In one aspect of the organic EL device of this embodiment, the fourth hole transporting zone material and the third hole transporting zone material are different compounds. In one aspect of the organic EL device of the present embodiment, the fourth hole transport zone material, the third hole transport zone material, the second hole transport zone material and the first hole transport zone material are different compounds.

[0224] In one aspect of the organic EL device of the present embodiment, the fourth hole transport layer contains a compound represented by the general formula (C1) or a compound represented by the general formula (C3). In one aspect of the organic EL device of this embodiment, the third hole transport layer and the fourth hole transport layer may each contain a compound represented by the general formula (C1), but the compound contained in the third hole transport layer and the compound contained in the fourth hole transport layer have different molecular structures. The compound represented by the general formula (C1) is preferably a monoamine compound.

[0225] In one aspect of the organic EL device of this embodiment, when the fourth hole transport layer is an electron blocking layer, the compound contained in the electron blocking layer (fourth hole transport region material) is, for example, a compound used in a known electron blocking layer, and is at least one compound selected from the group consisting of aromatic amine compounds and carbazole derivatives. The compound contained in the electron blocking layer may also be a monoamine compound. The compound contained in the electron blocking layer may also be a compound having a substituted or unsubstituted carbazolyl group and one substituted or unsubstituted amino group in the molecule.

[0226] In one aspect of the organic EL device of this embodiment, the first hole transport layer, the second hole transport layer, the third hole transport layer, and the fourth hole transport layer each contain one or more different compounds.

[0227] In one aspect of the organic EL device of this embodiment, the fourth hole transport layer contains one or more compounds having an ionization potential of 5.6 eV or more. In one aspect of the organic EL device of this embodiment, the fourth hole transporting zone material has an ionization potential of 5.6 eV or more.

[0228] In one aspect of the organic EL device of the present embodiment, the hole injection layer, the first hole transport layer, the second hole transport layer, the third hole transport layer, and the fourth hole transport layer each independently contain a monoamine compound having only one substituted or unsubstituted amino group in the molecule. In one aspect of the organic EL device of this embodiment, the hole injection layer, the first hole transport layer, the second hole transport layer, the third hole transport layer, and the fourth hole transport layer do not contain a diamine compound.

[0229] In one aspect of the organic EL device of this embodiment, at least any one of the first hole transport layer, the second hole transport layer, the third hole transport layer, and the fourth hole transport layer may contain a diamine compound. The compound represented by the general formula (C3) is preferably a diamine compound.

[0230] In the organic EL device according to this embodiment, R 901 , R 902 , R 903 and R 904 are each independently Hydrogen atoms, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms; a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, 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, R 901 If there are multiple R 901 are the same or different from each other, R 902 If there are multiple R 902 are the same or different from each other, R 903 If there are multiple R 903 are the same or different from each other, R 904 If there are multiple R 904 are the same or different from each other.

[0231] In this embodiment, all of the groups described as "substituted or unsubstituted" are preferably "unsubstituted" groups.

[0232] In this embodiment, the first hole transport zone material, the second hole transport zone material, the third hole transport zone material, the fourth hole transport zone material, and the first organic material contained in the hole injection layer may be referred to as hole transport zone materials.

[0233] In the organic EL device according to the present embodiment, the hole transporting material may be a compound containing a substituted or unsubstituted 3-carbazolyl group in the molecule. Also, in the organic EL device according to the present embodiment, the hole transporting material may be a compound not containing a substituted or unsubstituted 3-carbazolyl group in the molecule.

[0234] (Method of manufacturing hole transporting material) The hole transporting zone materials according to the present invention can be prepared by known methods or can be prepared by following the methods but using known alternative reactions and raw materials suited to the intended purpose.

[0235] (Specific Examples of Hole Transporting Zone Materials) Specific examples of the hole transport material according to this embodiment include the following compounds, but the present invention is not limited to these specific examples.

[0236] [ka]

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[0321] In one aspect of the organic EL element of the present embodiment, the compound (first hole transport region material) contained in the first hole transport layer and the third hole transport region material are preferably each independently at least one compound selected from the group of compounds listed below.

[0322] [ka]

[0323] [ka]

[0324] [ka]

[0325] [ka]

[0326] [ka]

[0327] In one aspect of the organic EL element of the present embodiment, it is more preferable that the compound (first hole transport region material) and the third hole transport region material contained in the first hole transport layer are each independently at least one compound selected from the group of compounds listed below.

[0328] [ka]

[0329] [ka]

[0330] In one aspect of the organic EL device of this embodiment, the compound contained in the second hole transport layer (second hole transport region material) is preferably at least one compound selected from the group of compounds listed below.

[0331] [ka]

[0332] [ka]

[0333] [ka]

[0334] In one aspect of the organic EL device of this embodiment, the compound contained in the second hole transport layer (second hole transport region material) is more preferably at least one compound selected from the group of compounds listed below.

[0335] [ka]

[0336] [ka]

[0337] In one aspect of the organic EL device of this embodiment, the compound (first organic material) contained in the hole injection layer is preferably at least one compound selected from the group of compounds listed below.

[0338] [ka]

[0339] In one aspect of the organic EL device of this embodiment, the compound contained in the fourth hole transport layer (fourth hole transport region material) is preferably at least one compound selected from the group of compounds listed below.

[0340] [ka]

[0341] [ka]

[0342] In addition, a compound exemplified as a compound contained in any one of the first hole transport layer, the second hole transport layer, and the third hole transport layer may be shown redundantly as an example of another layer, but in this embodiment, different compounds can be appropriately selected from the group of exemplified compounds as compounds that can be used in the first hole transport layer, the second hole transport layer, and the third hole transport layer.

[0343] (Acceptor material) In one aspect of the organic EL device of this embodiment, the acceptor material contains 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).

[0344] [ka]

[0345] (The first ring structure represented by the general formula (11) is condensed with at least one ring structure of a substituted or unsubstituted aromatic hydrocarbon ring having 6 to 50 ring carbon atoms and a substituted or unsubstituted heterocycle having 5 to 50 ring atoms in a molecule of the acceptor material, =X 10 The structure represented by the formula (11a), (11b), (11c), (11d), (11e), (11f), (11g), (11h), (11i), (11j), (11k) or (11m) is represented by the following formula (11a), (11b), (11c), (11d), (11e), (11f), (11g), (11h), (11i), (11j), (11k) or (11m).

[0346] [ka]

[0347] [ka]

[0348] (In the general formula (11a), (11b), (11c), (11d), (11e), (11f), (11g), (11h), (11i), (11j), (11k) or (11m), R 11 ~R14 And R 111 ~R 120 are each independently Hydrogen atom, Halogen atoms, Hydroxy groups, 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 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 -N(R 906 )(R 907 ) a group represented by a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or It is a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms. (In the general formula (12), X 1 ~X 5 are each independently Nitrogen atom, R 15 a carbon atom bonded to a carbon atom bonded to another atom in the molecule of the acceptor material, X 1 ~X 5 at least one of which is a carbon atom bonded to another atom in a molecule of the acceptor material; R 15 teeth, Hydrogen atom, Halogen atoms, 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 carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring 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 -N(R 906 )(R 907 ) a 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; Carboxy group, a substituted or unsubstituted ester group; a substituted or unsubstituted carbamoyl group, Nitro groups, and selected from the group consisting of substituted or unsubstituted siloxanyl groups; R 15 If there are multiple R 15 are either identical or different.)

[0349] (In the acceptor material, R 901 ~R 907 are each independently 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 carbon atoms, 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, R 901 If there are multiple R 901 are identical or different from each other, R 902 If there are multiple R 902 are identical or different from each other, R903 If there are multiple R 903 are identical or different from each other, R 904 If there are multiple R 904 are identical or different from each other, R 905 If there are multiple R 905 are identical or different from each other, R 906 If there are multiple R 906 are identical or different from each other, R 907 If there are multiple R 907 are either identical or different.)

[0350] In one aspect of the organic EL device of this embodiment, the acceptor material has at least one cyano group.

[0351] In one aspect of the organic EL device of the present embodiment, the hole injection layer contains a first organic material, and the acceptor material and the first organic material are different from each other. In one aspect of the organic EL device of this embodiment, the content of the acceptor material in the hole injection layer is less than 50% by mass. In one aspect of the organic EL device of 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 of the present embodiment, the content of the acceptor material in the hole injection layer is 1% by mass or more and 3% by mass or less.

[0352] In one aspect of the organic EL device of this 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 even more preferably 50% by mass or more. The content of the first hole transport region 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.

[0353] The ester group in this specification is at least any group selected from the group consisting of an alkyl ester group and an aryl ester group. As used herein, an alkyl ester group is, for example, —C(═O)OR E It is expressed as R E is, for example, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms (preferably 1 to 10 carbon atoms). An aryl ester group herein is, for example, -C(=O)OR Ar It is expressed as R Ar is, for example, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms.

[0354] The siloxanyl group in this specification is a silicon compound group connected via an ether bond, for example, a trimethylsiloxanyl group.

[0355] As used herein, a carbamoyl group is -CONH 2 It is expressed as: The substituted carbamoyl group herein includes, for example, -CONH-Ar C , or -CONH-R C It is expressed as Ar C is, for example, at least one group selected from the group consisting of a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms (preferably 6 to 10 ring carbon atoms) and a heterocyclic group having 5 to 50 ring atoms (preferably 5 to 14 ring atoms). C may be a group in which a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms is bonded to a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms. R C is, for example, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms (preferably 1 to 6 carbon atoms).

[0356] In the acceptor material, any group described as "substituted or unsubstituted" is preferably an "unsubstituted" group.

[0357] (Specific examples of acceptor materials) Specific examples of the acceptor material include the following compounds, however, the present invention is not limited to these specific examples of the acceptor material.

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[0404] <Light emitting area> The light-emitting region is disposed between the hole-transporting zone and the electron-transporting zone. The light-emitting region includes at least one light-emitting layer.

[0405] In one aspect of the organic EL device of the present embodiment, the light-emitting region 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.

[0406] In one aspect of the organic EL element of the present embodiment, the half width of the maximum peak of the light-emitting compound is 1 nm or more and 30 nm or less.

[0407] (First light-emitting layer) In one aspect of the organic EL device of the present embodiment, the at least one light-emitting layer includes a first light-emitting layer. In one aspect of the organic EL device according to this embodiment, the first emitting layer contains a first host material. The first host material is not particularly limited, but may be, for example, a compound selected from the group consisting of a compound represented by general formula (H1) described later and a first compound described later. In one aspect of the organic EL device according to this 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 device of the present embodiment, the first emitting layer contains a first host material and a first emitting compound.

[0408] The first light-emitting compound is preferably a compound that exhibits luminescence with a maximum peak wavelength of 500 nm or less, and more preferably a compound that exhibits luminescence with a maximum peak wavelength of 430 nm or more and 480 nm or less. The first light-emitting compound is preferably a fluorescent compound that exhibits fluorescent emission with a maximum peak wavelength of 500 nm or less, and more preferably a fluorescent compound that exhibits fluorescent emission with a maximum peak wavelength of 430 nm or more and 480 nm or less. In one aspect of the organic EL device of the present embodiment, the first emitting layer contains a first host material and a first emitting compound that emits light with a maximum peak wavelength of 500 nm or less.

[0409] In one aspect of the organic EL element according to this embodiment, the half width of the maximum peak of the first light-emitting compound is 1 nm or more and 30 nm or less.

[0410] In one aspect of the organic EL device according to this embodiment, the first light-emitting compound is a compound that does not contain an azine ring structure in the molecule.

[0411] In one aspect of the organic EL device according to this embodiment, the first emitting compound is preferably not a boron-containing complex, and more preferably not a complex.

[0412] Examples of fluorescent compounds that emit blue fluorescence and can be used in the first light-emitting layer include pyrene derivatives, styrylamine derivatives, chrysene derivatives, fluoranthene derivatives, fluorene derivatives, diamine derivatives, and triarylamine derivatives. In this specification, blue emission refers to emission having a maximum peak wavelength in the emission spectrum within the range of 430 nm or more and 500 nm or less.

[0413] In one aspect of the organic EL device of the present embodiment, the light-emitting region includes two or more light-emitting layers.

[0414] In one aspect of the organic EL element of the present embodiment, when the light-emitting region includes two or more light-emitting layers, all of the two or more light-emitting layers are fluorescent light-emitting layers. That is, in one aspect of the organic EL element of the present embodiment, all of the light-emitting layers included in the light-emitting region are fluorescent light-emitting layers. In one aspect of the organic EL device according to this embodiment, the first emitting layer does not contain a metal complex. Also, in one aspect of the organic EL device according to this embodiment, the first emitting layer does not contain a boron-containing complex.

[0415] In one aspect of the organic EL element according to this embodiment, the first emitting layer does not contain a phosphorescent material (dopant material). In one aspect of the organic EL device according to this embodiment, the first light-emitting layer does not contain a heavy metal complex or a phosphorescent rare earth metal complex, for example, an iridium complex, an osmium complex, or a platinum complex.

[0416] 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 (vertical axis: emission intensity, horizontal axis: wavelength) of this sample is measured at room temperature (300K). The emission spectrum can be measured using a spectrofluorophotometer (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 at which the emission intensity is maximum is defined as the maximum peak wavelength. Note that in this specification, the maximum peak wavelength of the fluorescent emission may be referred to as the fluorescent emission maximum peak wavelength (FL-peak).

[0417] In the emission spectrum of the first luminescent compound, the peak at which the emission intensity is maximum is defined as the maximum peak, and when the height of the maximum peak is defined as 1, the heights of other peaks appearing in the emission spectrum are preferably less than 0.6. Note that the peaks in the emission spectrum are defined as maximum values. In addition, it is preferable that the emission spectrum of the first luminescent compound has less than three peaks.

[0418] In one aspect of the organic EL device according to this embodiment, the first light-emitting layer contains the first light-emitting compound in an amount of 0.5 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 mass % or less of the total mass of the first light-emitting layer, more preferably 7 mass % or less of the total mass of the first light-emitting layer, and even more preferably 5 mass % or less of the total mass of the first light-emitting layer.

[0419] In this specification, the term "host material" refers to a material that is contained in, for example, "50% by mass or more of a layer." In one aspect of the organic EL device according to this embodiment, the first emitting layer preferably contains the first host material in an amount of 60 mass % or more of the total mass of the first emitting layer, more preferably 70 mass % or more of the total mass of the first emitting layer, even more preferably 80 mass % or more of the total mass of the first emitting layer, even more preferably 90 mass % or more of the total mass of the first emitting layer, and even more preferably 95 mass % or more of the total mass of the first emitting layer. The first emitting layer preferably contains the first host material in an amount of 99.5% by mass or less of the total mass of the first emitting layer. However, when the first emitting layer contains a first host material and a first emitting compound, the upper limit of the total content of the first host material and the first emitting compound is 100 mass %.

[0420] In the organic EL device according to this embodiment, the first emitting layer may contain a material other than the first host material and the first emitting compound. The first light-emitting layer may contain only one type of first host material or two or more types. The first light-emitting layer may contain only one type of first light-emitting compound or two or more types.

[0421] (First host material) In one aspect of the organic EL device according to this embodiment, the first host material has at least one deuterium atom. In one aspect of the organic EL device according to this embodiment, the first host material does not have a deuterium atom.

[0422] A compound represented by the general formula (H1) In one aspect of the organic EL device according to this embodiment, the first host material is a compound represented by the following general formula (H1).

[0423] [ka]

[0424] (In the general formula (H1), R 301 ~R 308 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 -N(R 906 )(R 907 ) 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, L 301 and L 302 are each independently Single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms, Ar 301 and Ar 302 are each independently a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or It is a substituted or unsubstituted heterocyclic group having 5 to 50 ring 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 Hydrogen atoms, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms; a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, 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, R 901 If there are multiple R 901 are the same or different from each other, R 902If there are multiple R 902 are the same or different from each other, R 903 If there are multiple R 903 are the same or different from each other, R 904 If there are multiple R 904 are the same or different from each other, R 905 If there are multiple R 905 are the same or different from each other, R 906 If there are multiple R 906 are the same or different from each other, R 907 If there are multiple R 907 are the same or different from each other, R 801 If there are multiple R 801 are the same or different from each other, R 802 If there are multiple R 802 are either identical or different.)

[0425] In one aspect of the organic EL element according to the present embodiment, Ar 301 and Ar 302 are each independently Phenyl group, naphthyl group, A phenanthryl group, Biphenyl group, terphenyl group, Diphenylfluorenyl group, Dimethylfluorenyl group, Benzodiphenylfluorenyl group, Benzodimethylfluorenyl group, Dibenzofuranyl group, Dibenzothienyl group, a naphthobenzofuranyl group, or It is a naphthobenzothienyl group.

[0426] In one aspect of the organic EL element according to the present embodiment, L 301 teeth, A single bond, or an unsubstituted arylene group having 6 to 22 ring carbon atoms, Ar 301 represents a substituted or unsubstituted aryl group having 6 to 22 ring carbon atoms.

[0427] In one aspect of the organic EL element according to the present embodiment, R 301 ~R 308 are each independently Hydrogen atoms, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms; a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, or -Si(R 901 )(R 902 )(R 903 ) is a group represented by the formula:

[0428] In one aspect of the organic EL element according to this embodiment, R 301 ~R 308 is a hydrogen atom.

[0429] In one embodiment of the organic EL element according to the present embodiment, L 302 is a single bond, and Ar 302 is an unsubstituted phenyl group. In one embodiment of the organic EL element according to the present embodiment, L 302 is a single bond, and Ar 302 is an unsubstituted 2-naphthyl group. In one embodiment of the organic EL element according to the present embodiment, L 302 is a single bond, and Ar 302 is an unsubstituted 1-naphthyl group.

[0430] In one embodiment of the organic EL element according to the present embodiment, L 302 is an unsubstituted p-phenylene group, and Ar 302 is an unsubstituted phenyl group. In one embodiment of the organic EL element according to the present embodiment, L 302 is an unsubstituted m-phenylene group, and Ar 302 is an unsubstituted phenyl group. In one embodiment of the organic EL element according to the present embodiment, L 302 is an unsubstituted o-phenylene group, and Ar 302 is an unsubstituted phenyl group. In one embodiment of the organic EL element according to the present embodiment, L 302 is an unsubstituted p-phenylene group, and Ar 302 is an unsubstituted 1-naphthyl group. In one embodiment 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 embodiment 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 embodiment 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.

[0431] In one aspect of the organic EL element according to this embodiment, R 301 ~R 308 each independently has at least one deuterium atom. In one embodiment of the organic EL element according to the present embodiment, L 301 , L 302 , Ar 301 and Ar 302 each independently has at least one deuterium atom.

[0432] In one aspect of the organic EL device according to this embodiment, the first host material is a compound represented by the following general formula (H10).

[0433] [ka]

[0434] (In the above general formula (H10), Ar 301 , R 301 ~R 308 , L 301 and L 302 each independently represents Ar 301 , R 301 ~R 308 , L 301 and L 302 is synonymous with X 3 is an oxygen atom or a sulfur atom, The Three R's 310 At least one pair of adjacent pairs of joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R 311 ~R 314 At least one pair of adjacent pairs of joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring; R does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring. 310 ~R 314 teeth, Hydrogen atoms, 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 -N(R 906 )(R 907 ) a group represented by Halogen atoms, Cyano group, Nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or It is a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms. (In the compound represented by the general formula (H10), R 901 , R 902 , R 903 , R 904 , R 905 , R 906 and R 907 each independently represents R in the general formula (H1). 901 , R 902 , R 903 , R 904 , R 905 , R 906 and R 907 is equivalent to

[0435] In one aspect of the organic EL element of the present embodiment, R 311 ~R 314 At least one pair of adjacent pairs of two or more of the above are bonded to each other to form a substituted or unsubstituted benzene ring.

[0436] In one aspect of the organic EL element according to this embodiment, R 301 ~R 308 each independently has at least one deuterium atom. In one embodiment of the organic EL element according to the present embodiment, L 301 , L 302 , Ar 301 and R 310 ~R 314 each independently has at least one deuterium atom.

[0437] In one aspect of the organic EL device of this embodiment, the first host material is a compound represented by the following general formula (H31), (H32), or (H33).

[0438] [ka]

[0439] [ka]

[0440] [ka]

[0441] (In the general formulae (H31), (H32) and (H33), X 3 , R 301 ~R 308 , R 310 ~R 314 , L 301 , L 302 and Ar 301 each independently represents X in the general formula (H10). 3 , R 301 ~R 308 , R 310 ~R 314 , L 301 , L 302 and Ar 301 is synonymous with R 321 ~R 324 are each independently Hydrogen atoms, 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 -N(R 906 )(R 907 ) a group represented by Halogen atoms, Cyano group, Nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or It is a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms.

[0442] In one aspect of the organic EL device of this embodiment, the first host material is a compound represented by the following general formula (H301) or (H302).

[0443] [ka]

[0444] [ka]

[0445] (In the above general formulae (H301) and (H302), X 3 , R 301 ~R 308 , R 311 ~R 314 , L 301 , L 302 and Ar 301 each independently represents X in the general formula (H10). 3 , R 301 ~R 308 , R 311 ~R 314 , L 301 , L 302 and Ar 301 is synonymous with R 315 ~R 317 At least one pair of adjacent pairs of joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring. 315 ~R 317 are each independently Hydrogen atoms, 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 -N(R 906 )(R 907 ) a group represented by Halogen atoms, Cyano group, Nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or It is a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms.

[0446] In one aspect of the organic EL device of this embodiment, the first host material is a compound represented by the following general formula (H311), (H312), (H321), (H322), (H331) or (H332).

[0447] [ka]

[0448] [ka]

[0449] [ka]

[0450] [ka]

[0451] [ka]

[0452] [ka]

[0453] (In the above general formulae (H311), (H312), (H321), (H322), (H331) and (H332), X 3 , R 301 ~R 308 , L 301 , L 302 and Ar 301 each independently represents X in the general formula (H10). 3 , R 301 ~R 308 , L 301 , L 302 and Ar 301 is synonymous with R 311 ~R 317 and R 321 ~R 324 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 -N(R 906 )(R 907 ) a group represented by Halogen atoms, Cyano group, Nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or It is a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms.

[0454] In one aspect of the organic EL device of the present embodiment, the L 301 and L 302 each independently represents a single bond, or a substituted or unsubstituted arylene group having 6 to 14 ring carbon atoms.

[0455] In one aspect of the organic EL device of the present embodiment, the L 301 and L 302 each independently represents a single bond, a substituted or unsubstituted phenylene group, or a substituted or unsubstituted naphthylene group.

[0456] In one aspect of the organic EL device of the present embodiment, the L 301 and L 302 is a single bond.

[0457] In one aspect of the organic EL device of this embodiment, the first host material is a compound represented by the following general formula (H313), (H314), (H323), (H324), (H333) or (H334).

[0458] [ka]

[0459] [ka]

[0460] [ka]

[0461] [ka]

[0462] [ka]

[0463] [ka]

[0464] (In the above general formulae (H313), (H314), (H323), (H324), (H333) and (H334), X 3 , R 301 ~R 308 , and Ar 301 each independently represents X in the general formula (H10). 3 , R 301 ~R 308 , and Ar 301 is synonymous with R 311 ~R 317 , R 321 ~R 324 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 -N(R 906 )(R 907 ) a group represented by Halogen atoms, Cyano group, Nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or It is a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms.

[0465] In one aspect of the organic EL element of this embodiment, R 311 ~R 317 , R 321 ~R 324 are each independently Hydrogen atoms, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms; a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or It is a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms.

[0466] In one aspect of the organic EL element of this embodiment, R 311 ~R 317 , R 321 ~R 324 are each independently Hydrogen atoms, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, or It is a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms.

[0467] In one aspect of the organic EL device of this embodiment, the first host material, Ar 301is a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms.

[0468] In one aspect of the organic EL device of this embodiment, the first host material, Ar 301 is a group represented by the following general formula (a1), (a2), (a3) ​​or (a4).

[0469] [ka]

[0470] (In the general formulae (a1), (a2), (a3) ​​and (a4), R 330 ~R 335 At least one pair of adjacent pairs of joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R 341 ~R 348 At least one pair of adjacent pairs of joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring. 330 ~R 335 And R 341 ~R 348 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 -N(R 906 )(R 907 ) 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, Multiple R 330 are the same or different from each other, *L 301 The bond position is shown.)

[0471] In one aspect of the organic EL device of this embodiment, the first host material, Ar 301 is a group represented by general formula (a1) or (a2).

[0472] In one aspect of the organic EL element of this embodiment, R 330 ~R 335 And R 341 ~R 348 is a hydrogen atom.

[0473] In one aspect of the organic EL device of this embodiment, X of the first host material 3 is an oxygen atom.

[0474] In one aspect of the organic EL element of this embodiment, R 301 ~R 308 are each independently 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 carbon atoms, or It is a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms.

[0475] In one aspect of the organic EL element of this embodiment, R 301 ~R 308 are each independently Hydrogen atoms, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, or It is a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms.

[0476] In one aspect of the organic EL element of this embodiment, R 301 ~R 308 is a hydrogen atom.

[0477] Compounds represented by the general formula (H20) In one aspect of the organic EL device according to this embodiment, the first host material is a compound represented by the following general formula (H20).

[0478] [ka]

[0479] (In the general formula (H20), R 201 ~R 208 are each independently Hydrogen atoms, 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 )(R902 )(R 903 ) a group represented by -O-(R 904 ) a group represented by -S-(R 905 ) a group represented by -N(R 906 )(R 907 ) a group represented by Halogen atoms, Cyano group, Nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or It is a group represented by the following general formula (H21).

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[0481] (In the general formulae (H20) and (H21), L 201 , L 202 and L 203 are each independently A single bond, or a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, Ar 201 , Ar 202 and Ar 203 are each independently a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms. (In the above general formula (H20), R 901 , R 902 , R 903 , R 904 , R 905 , R 906 and R 907 are each independently Hydrogen atoms, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms; a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, 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, R 901 If there are multiple R 901 are the same or different from each other, R 902 If there are multiple R 902 are the same or different from each other, R 903 If there are multiple R 903 are the same or different from each other, R 904 If there are multiple R 904 are the same or different from each other, R 905 If there are multiple R 905 are the same or different from each other, R 906 If there are multiple R 906 are the same or different from each other, R 907 If there are multiple R 907 are either identical or different.)

[0482] In one aspect of the organic EL element according to this embodiment, Ar 201 , Ar 202 and Ar 203 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.

[0483] In one aspect of the organic EL element according to this embodiment, R 201 ~R 208 each independently has at least one deuterium atom. In one embodiment of the organic EL element according to the present embodiment, L 201 , L 202 , L 203 , Ar 201, Ar 202 and Ar 203 each independently has at least one deuterium atom.

[0484] In one aspect of the organic EL device according to this embodiment, the compound represented by the general formula (H20) is a compound represented by the following general formula (201), general formula (202), general formula (203), general formula (204), general formula (205), general formula (206), general formula (207), general formula (208), or general formula (209).

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[0494] (In the general formulas (201) to (209), L 201 and Ar 201 is L in the general formula (H20). 201 and Ar 201 is synonymous with R 201 ~R 208 each independently represents R in the general formula (H20). 201 ~R 208 is equivalent to

[0495] In one aspect of the organic EL device according to this embodiment, the compound represented by the general formula (H20) is a compound represented by the following general formula (221), general formula (222), general formula (223), general formula (224), general formula (225), general formula (226), general formula (227), general formula (228), or general formula (229).

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[0505] (In the general formula (221), the general formula (222), the general formula (223), the general formula (224), the general formula (225), the general formula (226), the general formula (227), the general formula (228) and the general formula (229), R 201 And R 203 ~R 208 each independently represents R in the general formula (H20). 201 And R 203 ~R 208 is synonymous with L 201 and Ar 201 respectively represent L in the general formula (H20). 201 and Ar 201 is synonymous with L 203 represents L in the general formula (H21). 203 is synonymous with L 203 and L 201 are identical or different from each other, Ar 203 represents Ar in the general formula (H21). 203 is synonymous with Ar 203 and Ar 201 are either identical or different.)

[0506] In one aspect of the organic EL device according to this embodiment, the compound represented by the general formula (H20) is a compound represented by the following general formula (241), general formula (242), general formula (243), general formula (244), general formula (245), general formula (246), general formula (247), general formula (248), or general formula (249).

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[0516] (In the general formula (241), the general formula (242), the general formula (243), the general formula (244), the general formula (245), the general formula (246), the general formula (247), the general formula (248) and the general formula (249), R 201 , R 202 And R 204 ~R 208 each independently represents R in the general formula (H20). 201 , R 202 And R 204 ~R 208 is synonymous with L 201 and Ar 201 respectively represent L in the general formula (H20). 201 and Ar 201 is synonymous with L 203 represents L in the general formula (H21). 203 is synonymous with L 203 and L 201 are identical or different from each other, Ar 203 represents Ar in the general formula (H21). 203 is synonymous with Ar 203 and Ar 201 are either identical or different.)

[0517] In one aspect of the organic EL element according to this embodiment, in the general formula (H20), R 201 ~R 208 each independently represents 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 carbon atoms, or -Si(R 901 )(R 902 )(R 903 ) is a group represented by the formula:

[0518] In one aspect of the organic EL element according to this embodiment, in the general formula (H20), L 201 is a single bond or an unsubstituted arylene group having 6 to 22 ring carbon atoms, Ar201 represents a substituted or unsubstituted aryl group having 6 to 22 ring carbon atoms.

[0519] In one aspect of the organic EL element according to this embodiment, in the general formula (H20), R 201 ~R 208 is preferably a hydrogen atom in order to prevent the intermolecular interaction from being inhibited and to suppress the decrease in electron mobility. 201 ~R 208 may be 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.

[0520] In one aspect of the organic EL device according to this embodiment, when the light-emitting region has at least a first light-emitting layer containing a first host material and a second light-emitting layer containing a second host material, R 301 ~R 308 is preferably a hydrogen atom in order to prevent the intermolecular interaction from being inhibited and to suppress the decrease in electron mobility. 301 ~R 308 may be 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. One aspect of the organic EL element according to this embodiment may have an anode, a second light-emitting layer, a first light-emitting layer, and a cathode in this order, or the order of the first light-emitting layer and the second light-emitting layer may be reversed. For example, when the first light-emitting layer and the second light-emitting layer are stacked in the order of the second light-emitting layer and the first light-emitting layer from the anode side, and the first host material contained in the first light-emitting layer is a compound represented by the general formula (H1), the following phenomenon may occur. 301 ~R 308 is preferably not a bulky substituent. In the general formula (H1), R 301 ~R 308When the compound represented by the general formula (H1) is a bulky substituent such as an alkyl group or a cycloalkyl group, the intermolecular interaction is suppressed, the electron mobility with respect to the second host material is reduced, and the relationship μe(H1)>μe(H2) in the mathematical formula (Mathematical formula 3) described later may not be satisfied. When the compound represented by the general formula (H1) is used as the first host material in the first light-emitting layer, it is expected that the decrease in the recombination ability of holes and electrons in the second light-emitting layer and the decrease in the light-emitting efficiency can be suppressed by satisfying the relationship μe(H1)>μe(H2). The substituents include haloalkyl groups, alkenyl groups, alkynyl groups, -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 -N(R 906 )(R 907 ), an aralkyl group, -C(=O)R 801 a group represented by -COOR 802 The groups represented by the following formula (I), halogen atoms, cyano groups, and nitro groups may be bulky, and alkyl groups and cycloalkyl groups may be even more bulky. In the compound represented by the general formula (H1), R 301 ~R 308 is preferably not a bulky substituent, is preferably not an alkyl group or a cycloalkyl group, and is preferably not an alkyl group, a cycloalkyl group, a haloalkyl group, an alkenyl group, an alkynyl group, -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 -N(R 906 )(R 907 ), an aralkyl group, -C(=O)R 801 a group represented by -COOR 802 More preferably, it is not a group represented by the following formula: embedded image a halogen atom, a cyano group, or a nitro group.

[0521] In the general formula (H1), R 301 ~R308 In the case of "substituted or unsubstituted" in R, it is also preferable that the substituent does not include the above-mentioned potentially bulky substituents, particularly substituted or unsubstituted alkyl groups and substituted or unsubstituted cycloalkyl groups. 301 ~R 308 In the case of "substituted or unsubstituted" in the above, the substituent does not include a substituted or unsubstituted alkyl group or a substituted or unsubstituted cycloalkyl group, thereby preventing suppression of intermolecular interactions due to the presence of bulky substituents such as alkyl groups and cycloalkyl groups, and preventing a decrease in electron mobility. Furthermore, when such a compound is used as the first host material in the first emitting layer, a decrease in the recombination ability of holes and electrons in the second emitting layer and a decrease in luminous efficiency can be suppressed.

[0522] R is a substituent of the anthracene skeleton 301 ~R 308 R is not a bulky substituent, but a 301 ~R 308 It is more preferable that R is unsubstituted. 301 ~R 308 is not a bulky substituent, R as a non-bulky substituent 301 ~R 308 When a substituent is bonded to R, the substituent is preferably not a bulky substituent. 301 ~R 308 The substituent bonded to is preferably not an alkyl group or a cycloalkyl group, and is preferably an alkyl group, a cycloalkyl group, a haloalkyl group, an alkenyl group, an alkynyl group, -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 -N(R 906 )(R 907 ), an aralkyl group, -C(=O)R 801 a group represented by -COOR 802More preferably, it is not a group represented by the following formula: embedded image a halogen atom, a cyano group, or a nitro group.

[0523] In the first host material, any group described as "substituted or unsubstituted" is preferably an "unsubstituted" group.

[0524] In one aspect of the organic EL device according to this embodiment, the light-emitting layer contains a compound represented by the general formula (H10) as a first host material. The compound represented by the general formula (H10) may or may not have at least one deuterium atom. In one aspect of the organic EL device according to this embodiment, the light-emitting layer contains a compound represented by the general formula (H20) as a first host material. The compound represented by the general formula (H20) may or may not have at least one deuterium atom. In one aspect of the organic EL device according to this embodiment, the light-emitting layer contains, as a first host material, a compound represented by the general formula (H10) and a compound represented by the general formula (H20). In this aspect, it is preferable that at least one of the compound represented by the general formula (H10) and the compound represented by the general formula (H20) has at least one deuterium atom.

[0525] In one aspect of the organic EL element according to this embodiment, when the light-emitting layer contains, as a first host material, a compound represented by general formula (H10) and a compound represented by general formula (H20), the compound represented by general formula (H10) does not substantially contain a deuterium atom, and the compound represented by general formula (H20) contains at least one deuterium atom. In one aspect of the organic EL element according to this embodiment, when the light-emitting layer contains, as a first host material, a compound represented by general formula (H10) and a compound represented by general formula (H20), the compound represented by general formula (H20) does not substantially contain deuterium atoms, and the compound represented by general formula (H10) does not contain at least one deuterium atom. Here, the phrase "the compound is substantially free of deuterium atoms" means that the compound does not contain any deuterium atoms at all, or that the compound is allowed to contain deuterium atoms at a natural abundance level, for example, 0.015% or less.

[0526] (Method for Producing First Host Material) The first host material can be produced by a known method. The first host material can also be produced by following a known method and using known alternative reactions and raw materials suited to the target product.

[0527] (Specific Examples of the First Host Material) Specific examples of the first host material include the following compounds, however, the present invention is not limited to these specific examples of the first host material.

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[0553] In one aspect of the organic EL element of the present embodiment, the light-emitting region is composed of only the first light-emitting layer. In one aspect of the organic EL device of the present embodiment, the light-emitting region includes a first light-emitting layer and further includes a second light-emitting layer. In one aspect of the organic EL element of the present embodiment, the light-emitting region is composed of only the first light-emitting layer and the second light-emitting layer.

[0554] In one aspect of the organic EL device according to this embodiment, the light-emitting region 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 being different from each other. When the light-emitting region has at least a first light-emitting layer and a second light-emitting layer, the light-emitting efficiency can be improved by utilizing Tripret-Tripret-Annhilation (sometimes referred to as TTA). TTA is a mechanism in which triplet excitons collide with each other to generate singlet excitons. The TTA mechanism is also sometimes called the TTF mechanism, as described in International Publication WO 2010 / 134350.

[0555] The TTF phenomenon will be explained. Holes injected from the anode and electrons injected from the cathode recombine in the light-emitting layer to generate excitons. As has been known in the past, the spin state is 25% singlet excitons and 75% triplet excitons. In conventionally known fluorescent elements, 25% of the singlet excitons emit light when they relax to the ground state, but the remaining 75% of the triplet excitons return to the ground state through a thermal deactivation process without emitting light. Therefore, the theoretical limit of the internal quantum efficiency of conventional fluorescent elements was said to be 25%. On the other hand, the behavior of triplet excitons generated inside organic materials has been theoretically investigated. According to S.M. Bachilo et al. (J.Phys.Chem.A,104,7711(2000)), if it is assumed that higher-order excitons such as quintets immediately return to triplet states, triplet excitons (hereafter, 3 A * When the density of triplet excitons (hereinafter referred to as triplet excitons) increases, the triplet excitons collide with each other and the reaction shown in the following formula 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, or 20%, of the 75% of triplet excitons initially generated will change to singlet excitons. Therefore, the singlet excitons that contribute as light will be 40%, which is the 25% initially generated plus 75% × (1 / 5) = 15%. In this case, the emission ratio of TTF-derived light in the total emission intensity (TTF ratio) will be 15 / 40, or 37.5%. In addition, if it is assumed that the 75% of the triplet excitons initially generated 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% will be obtained by adding 75% × (1 / 2) = 37.5% to the 25% of the initially generated singlet excitons. In this case, the TTF ratio is 37.5 / 62.5 = 60%.

[0556] In one aspect of the organic EL element according to the present embodiment, from the viewpoint of realizing the TTF mechanism, the triplet energy T 1 (H1) and the triplet energy T 1 (H2) preferably satisfies the relationship of the following mathematical formula (Math. 1), and more preferably satisfies the relationship of the following mathematical formula (Math. 2). T 1 (H2)>T 1 (H1) …(Number 1) T 1 (H2)-T 1 (H1)>0.03eV …(Number 2)

[0557] In one aspect of the organic EL element according to this embodiment, when the organic EL element has the first light-emitting layer and the second light-emitting layer that satisfy the relationship of the above mathematical formula (Mathematical Formula 1), the luminous efficiency of the element can be improved.

[0558] In one aspect of the organic EL element according to the present embodiment, by satisfying the relationship of the above formula (Mathematical formula 1), triplet excitons generated by recombination of holes and electrons in the second light-emitting layer are unlikely to be quenched at the interface between the second light-emitting layer and the organic layer even if there are excess carriers at the interface between the second light-emitting layer and the organic layer that is in direct contact with the second light-emitting 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 blocking layer, quenching due to excess 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 blocking layer, quenching due to excess holes is considered. In one aspect of the organic EL element according to the present embodiment, the first light-emitting layer and the second light-emitting layer are provided so as to satisfy the relationship of the above mathematical formula (Mathematical formula 1), so that triplet excitons generated in the second light-emitting layer can be transferred to the first light-emitting layer without being quenched by excess carriers, and reverse transfer from the first light-emitting layer to the second light-emitting layer can be suppressed. As a result, the TTF mechanism is expressed in the first light-emitting layer, singlet excitons are efficiently generated, and the luminous efficiency is improved. In this way, the organic EL element has a second light-emitting layer that mainly generates triplet excitons, and a first light-emitting layer that mainly exerts the TTF mechanism by utilizing triplet excitons transferred from the second light-emitting layer, as distinct regions, and uses 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, thereby providing a difference in triplet energy, thereby improving the luminous efficiency.

[0559] 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.

[0560] 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" can include, for example, any of the following embodiments (LS1), (LS2), and (LS3). (LS1) An embodiment in which a region in which both the first host material and the second host material are mixed is generated during the process of vapor-depositing a compound for the first emitting layer and the process of vapor-depositing a compound for the second emitting layer, and this region is present at the interface between the first emitting layer and the second emitting layer. (LS2) When the first and second emitting layers contain a light-emitting compound, a region in which the first host material, the second host material, and the light-emitting compound are mixed is generated during the process of vapor-depositing the compound for the first emitting layer and the process of vapor-depositing the compound for the second emitting layer, and this region is present at the interface between the first and second emitting layers. (LS3) When the first light-emitting layer and the second light-emitting layer contain a light-emitting compound, a region made of the light-emitting compound, a region made of the first host material, or a region made of the second host material is generated during the process of vapor-depositing the compound for the first light-emitting layer and the process of vapor-depositing the compound for the second light-emitting layer, and the region is present at the interface between the first light-emitting layer and the second light-emitting layer.

[0561] (Second light-emitting layer) In one aspect of the organic EL device according to this embodiment, the second emitting layer contains a second host material. The second host material is not particularly limited, but may be, for example, a compound selected from the group consisting of the first compound described below and the compound represented by the general formula (H1). In one aspect of the organic EL device according to this embodiment, the second light-emitting layer contains a second light-emitting compound. The second light-emitting compound is not particularly limited.

[0562] In one aspect of the organic EL device of the present embodiment, the second emitting layer contains a second host material and a second emitting compound. In one aspect of the organic EL device of 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 or different compounds. In one aspect of the organic EL device of the present embodiment, the second host material and the first host material contained in the first emitting layer are different compounds. The second light-emitting compound is preferably a compound that exhibits luminescence with a maximum peak wavelength of 500 nm or less, more preferably a compound that exhibits luminescence with a maximum peak wavelength of 430 nm or more and 480 nm or less. The second light-emitting compound is preferably a fluorescent compound that exhibits fluorescent emission with a maximum peak wavelength of 500 nm or less, more preferably a fluorescent compound that exhibits fluorescent emission with a maximum peak wavelength of 430 nm or more and 480 nm or less. In one aspect of the organic EL device of the present embodiment, the second emitting layer contains a second host material and a second emitting compound that emits light having a maximum peak wavelength of 500 nm or less.

[0563] In one aspect of the organic EL element according to this embodiment, the half width 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.

[0564] In one aspect of the organic EL device according to this embodiment, the second light-emitting compound is a compound that does not contain an azine ring structure in the molecule.

[0565] In one aspect of the organic EL device according to this embodiment, the second emitting compound is preferably not a boron-containing complex, and more preferably not a complex.

[0566] Examples of compounds that can be used in the second light-emitting layer and emit blue fluorescence include pyrene derivatives, styrylamine derivatives, chrysene derivatives, fluoranthene derivatives, fluorene derivatives, diamine derivatives, and triarylamine derivatives.

[0567] In one aspect of the organic EL device according to this embodiment, the second emitting layer does not contain a metal complex. Also, in one aspect of the organic EL device according to this embodiment, the second emitting layer does not contain a boron-containing complex.

[0568] In one aspect of the organic EL element according to this embodiment, the second emitting layer does not contain a phosphorescent material (dopant material). In one aspect of the organic EL device according to this embodiment, the second light-emitting layer does not contain a heavy metal complex or a phosphorescent rare earth metal complex.

[0569] In one aspect of the organic EL device according to this embodiment, the second light-emitting layer contains the 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 the light-emitting compound in an amount of 10% by mass or less of the total mass of the second light-emitting layer, more preferably contains the light-emitting compound in an amount of 7% by mass or less of the total mass of the second light-emitting layer, and further preferably contains the light-emitting compound in an amount of 5% by mass or less of the total mass of the second light-emitting layer.

[0570] In one aspect of the organic EL element according to this embodiment, the second emitting layer preferably contains the second host material in an amount of 60 mass % or more of the total mass of the second emitting layer, more preferably 70 mass % or more of the total mass of the second emitting layer, even more preferably 80 mass % or more of the total mass of the second emitting layer, even more preferably 90 mass % or more of the total mass of the second emitting layer, and even more preferably 95 mass % or more of the total mass of the second emitting layer. The second emitting layer preferably contains the second host material in an amount of 99.5 mass % or less of the total mass of the second emitting layer. When the second emitting layer contains a second host material and a second emitting compound, the upper limit of the total content of the second host material and the second emitting compound is 100 mass %.

[0571] In the organic EL device according to this embodiment, the second emitting layer may contain a material other than the second host material and the second emitting compound. The second light-emitting layer may contain only one type of second host material or two or more types. The second light-emitting layer may contain only one type of second light-emitting compound or two or more types.

[0572] In one aspect of the organic EL device according to this embodiment, the triplet energy T 1 (D1) and the triplet energy T of the first host material 1It is preferable that (H1) satisfies the relationship of the following mathematical formula (Mathematical Formula 4A). T 1 (D1)>T 1 (H1) …(Number 4A)

[0573] In one aspect of the organic EL element according to this embodiment, the first light-emitting compound and the first host material satisfy the relationship of the above mathematical formula (Mathematical Formula 4A), so that triplet excitons generated in the second light-emitting layer transfer energy to the molecules of the first host material, not to the first light-emitting compound having a higher triplet energy, when they move to the first light-emitting layer. Also, triplet excitons generated by recombination of holes and electrons on the first host material do not transfer to the first light-emitting compound having a higher triplet energy. Triplet excitons generated by recombination on the molecules of the first light-emitting compound transfer energy quickly to the molecules of the first host material. Triplet excitons of the first host material do not transfer to the first emitting compound, but efficiently collide with each other on the first host material due to the TTF phenomenon, generating singlet excitons.

[0574] In one aspect of the organic EL device according to this embodiment, the singlet energy S 1 (H1) and the singlet energy S of the first emissive compound 1 It is preferable that (D1) satisfies the relationship of the following mathematical formula (Mathematical Formula 4). S 1 (H1)>S 1 (D1) ...(Number 4)

[0575] In one aspect of the organic EL element according to this embodiment, the first light-emitting compound and the first host material satisfy the relationship of the above mathematical formula (Mathematical Formula 4), and thus the singlet energy of the first light-emitting compound is smaller than the singlet energy of the first host material. As a result, the singlet excitons generated by the TTF phenomenon transfer energy from the first host material to the first light-emitting compound, and contribute to the emission (preferably fluorescent emission) of the first light-emitting compound.

[0576] In one aspect of the organic EL element according to this embodiment, when the first light-emitting layer and the second light-emitting layer are stacked in the order of the second light-emitting layer and the first light-emitting layer from the anode side, it is preferable that the electron mobility μe(H2) of the second host material and the electron mobility μe(H1) of the first host material satisfy the relationship of the following formula (Mathematical Formula 3). When the first host material and the second host material satisfy the relationship of the following formula (Mathematical Formula 3), the recombination ability of holes and electrons in the second light-emitting layer is improved. μe(H1)>μe(H2) …(Equation 3)

[0577] In one aspect of the organic EL element according to this embodiment, when the first light-emitting layer and the second light-emitting layer are stacked in the order of the second light-emitting layer and the first light-emitting layer from the anode side, it is also preferable that the hole mobility μh(H2) of the second host material and the hole mobility μh(H1) of the first host material satisfy the relationship of the following mathematical formula (Mathematical Formula 31). μh(H2)>μh(H1) …(Equation 31)

[0578] In one aspect of the organic EL element according to this embodiment, when the first light-emitting layer and the second light-emitting layer are stacked in the order of the second light-emitting layer and the first light-emitting layer from the anode side, it is also preferable that the hole mobility μh(H2) of the second host material, the electron mobility μe(H2) of the second host material, the hole mobility μh(H1) of the first host material, and the electron mobility μe(H1) of the first host material satisfy the relationship of the following mathematical formula (Mathematical Formula 32). (μe(H1) / μh(H1))>(μe(H2) / μh(H2)) …(Math. 32)

[0579] In one aspect of the organic EL element according to this embodiment, the singlet energy S 1 (H2) and the singlet energy S of the second emissive compound 1 It is preferable that (D2) satisfies the relationship of the following mathematical formula (Mathematical formula 20). S 1 (H2)>S 1 (D2) ...(Number 20)

[0580] When the second host material and the second luminescent compound satisfy the relationship of mathematical formula (Mathematical formula 20), the singlet excitons generated on the second host material are easily able to transfer energy from the second host material to the second luminescent compound, and contribute to the emission (preferably fluorescent emission) of the second luminescent compound.

[0581] In the organic EL device according to the second embodiment, the triplet energy T 1 (H2) and the triplet energy T of the second emissive compound 1 It is preferable that (D2) satisfies the relationship of the following formula (Mathematical formula 20A). T 1 (D2)>T 1 (H2) ...(Number 20A)

[0582] When the second host material and the second light-emitting compound satisfy the relationship of mathematical formula (Mathematical Formula 20A), triplet excitons generated in the second light-emitting layer move over the second host material rather than the second light-emitting compound, which has a higher triplet energy, and therefore are more likely to move to the first light-emitting layer.

[0583] Triplet energy T 1 , singlet energy S 1 The methods for measuring the hole mobility and the electron mobility will be described later.

[0584] In one aspect of the organic EL device according to this embodiment, the thickness of the first light-emitting layer is preferably 5 nm or more, more preferably 15 nm or more. If the thickness of the first light-emitting layer is 5 nm or more, when the light-emitting region has a second light-emitting layer, it is easy to prevent 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. In addition, if the 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 thickness of the first emitting layer is preferably 20 nm or less. If the thickness of the first emitting layer is 20 nm or less, the density of triplet excitons in the first emitting layer can be improved, making the TTF phenomenon more likely to occur. In one aspect of the organic EL element according to this embodiment, the thickness of the first light-emitting layer is preferably 5 nm or more and 20 nm or less.

[0585] In one aspect of the organic EL element according to the present embodiment, the thickness of the second light-emitting layer is preferably 3 nm or more, more preferably 5 nm or more, which is sufficient to cause recombination of holes and electrons in the second light-emitting layer. In one aspect of the organic EL device according to the present embodiment, the thickness of the second emitting layer is preferably 15 nm or less, more preferably 10 nm or less, which is thin enough for triplet excitons to transfer to the first emitting layer. In one aspect of the organic EL element according to this embodiment, the thickness of the second emitting layer is more preferably 3 nm or more and 15 nm or less.

[0586] (First host material and second host material) In one aspect of the organic EL device according to this embodiment, the first host material and the second host material are preferably 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). The first compound can also be used as the first host material and the second host material.

[0587] A compound represented by the general formula (1) In one aspect of the organic EL element according to this 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).

[0588] [ka]

[0589] In the general formula (1), R 101 ~R 110 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, a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms, or A group represented by the general formula (11), However, R 101 ~R 110 At least one of the above is a group represented by general formula (11), When a plurality of groups represented by the general formula (11) are present, the plurality of groups represented by the general formula (11) are the same or different from each other, L 101 teeth, Single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms, Ar 101 teeth, 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, mx is 0, 1, 2, 3, 4 or 5; L 101 If there are two or more, there are two or more L 101 are identical or different from each other, Ar 101 If there are two or more, there are two or more Ar 101 are identical or different from each other, In the general formula (11), * indicates the bonding position to the pyrene ring in the general formula (1).

[0590] 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 Hydrogen atoms, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms; a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, 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, R 901 If there are multiple R 901 are the same or different from each other, R 902 If there are multiple R 902 are the same or different from each other, R 903 If there are multiple R903 are the same or different from each other, R 904 If there are multiple R 904 are the same or different from each other, R 905 If there are multiple R 905 are the same or different from each other, R 906 If there are multiple R 906 are the same or different from each other, R 907 If there are multiple R 907 are the same or different from each other, R 801 If there are multiple R 801 are the same or different from each other, R 802 If there are multiple R 802 are the same or different from each other.

[0591] In one embodiment, Ar 101 is preferably a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms.

[0592] In one embodiment, Ar 101 teeth, 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 pyrenyl group, a substituted or unsubstituted phenanthryl group, or A substituted or unsubstituted fluorenyl group is preferred.

[0593] In one embodiment, the first compound is preferably represented by the following general formula (101).

[0594] [ka]

[0595] (In the general formula (101), R 101 ~R 120 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, However, R 101 ~R 110 One of them is L 101 indicates the bond position with R 111 ~R 120 One of them is L 101 indicates the bonding position with L 101 teeth, Single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms, mx is 0, 1, 2, 3, 4 or 5; L 101 If there are two or more, there are two or more L 101 are either identical or different.)

[0596] In one embodiment, L 101 is preferably a single bond, or a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms.

[0597] In one embodiment, R 101 ~R 110 It is preferable that two or more of the above are groups represented by the general formula (11).

[0598] In one embodiment, R 101 ~R 110 At least two of the groups represented by the general formula (11) are Ar 101 is preferably a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms.

[0599] 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 a group represented by the general formula (11) 101 ~R 110 The substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms as represented by is preferably not a substituted or unsubstituted pyrenyl group.

[0600] In one embodiment, R other than the group represented by general formula (11) 101 ~R 110 are each independently 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 carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or It is preferably a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms.

[0601] In one embodiment, R other than the group represented by general formula (11) 101 ~R 110 are each independently Hydrogen atoms, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, or A substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms is preferred.

[0602] In one embodiment, R other than the group represented by general formula (11) 101 ~R 110 is preferably a hydrogen atom.

[0603] A compound represented by the general formula (1X) In one aspect of the organic EL device according to this embodiment, the first compound is a compound represented by the following general formula (1X).

[0604] [ka]

[0605] (In the general formula (1X), R 101 ~R 112 are each independently Hydrogen atoms, 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, a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms, or A group represented by the general formula (11X), However, R 101 ~R 112 At least one of the above is a group represented by general formula (11X), When a plurality of groups represented by the general formula (11X) are present, the plurality of groups represented by the general formula (11X) are the same or different from each other, L 101 teeth, Single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms, Ar 101 teeth, 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, mx is 1, 2, 3, 4 or 5; L 101 If there are two or more, there are two or more L 101 are identical or different from each other, Ar 101 If there are two or more, there are two or more Ar 101 are identical or different from each other, In the general formula (11X), * indicates the bonding position to the benz[a]anthracene ring in the general formula (1X).

[0606] In one aspect of the organic EL element according to this embodiment, the group represented by the general formula (11X) is a group represented by the following general formula (111X).

[0607] [ka]

[0608] (In the general formula (111X), X 1 CR 143 R 144 , oxygen atom, sulfur atom, or NR 145 and L 111 and L 112 are each independently Single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms, ma is 1, 2, 3 or 4; mb is 1, 2, 3 or 4; ma+mb is 2, 3 or 4, Ar 101 represents Ar in the general formula (11X). 101 is synonymous with R 141 , R 142 , R 143 , R 144 and R 145 are each independently Hydrogen atoms, 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.)

[0609] In the group represented by the general formula (111X), L is located at any one of positions *1 to *4 among positions *1 to *8 of carbon atoms in the ring structure represented by the following general formula (111aX): 111 is bonded, and R is placed in the remaining three positions of *1 to *4. 141 is bonded, and L is placed at any one of positions *5 to *8. 112 is bonded, and R is placed in the remaining three positions from *5 to *8. 142 are combined.

[0610] [ka]

[0611] For example, in the group represented by the general formula (111X), L 111is bonded to the carbon atom indicated by *2 in the ring structure represented by the general formula (111aX), and L 112 is bonded to the position of the carbon atom marked *7 in the ring structure represented by general formula (111aX), the group represented by general formula (111X) is represented by the following general formula (111bX).

[0612] [ka]

[0613] (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 each independently represents X in the general formula (111X). 1 , L 111 , L 112 , ma, mb, Ar 101 , R 141 , R 142 , R 143 , R 144 and R 145 is synonymous with Multiple R 141 are identical or different from each other, Multiple R 142 are either identical or different.)

[0614] In the organic EL device according to this embodiment, the group represented by the general formula (111X) is preferably a group represented by the general formula (111bX).

[0615] In the compound represented by the general formula (1X), it is preferable that ma is 1 or 2, and mb is 1 or 2.

[0616] In the compound represented by the general formula (1X), it is preferable that ma is 1 and mb is 1.

[0617] In the compound represented by the general formula (1X), Ar 101 is preferably a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms.

[0618] In the compound represented by the general formula (1X), Ar 101 teeth, 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 A substituted or unsubstituted fluorenyl group is preferred.

[0619] The compound represented by the general formula (1X) is also preferably represented by the following general formula (101X).

[0620] [ka]

[0621] (In the general formula (101X), R 111 and R 112 One of them is L 101 indicates the bond position with R 133 and R 134 One of them is L 101 indicates the bonding position with R 101 ~R 110 , R 121 ~R 130 , L 101 R is not a bond site with 111 or R 112 , and L 101 R is not a bond site with 133 or R 134are each independently Hydrogen atoms, 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, L 101 teeth, Single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms, mx is 1, 2, 3, 4 or 5; L 101 If there are two or more, there are two or more L 101 are either identical or different.)

[0622] In the compound represented by the general formula (1X), L 101 teeth, A single bond, or A substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms is preferred.

[0623] The compound represented by the general formula (1X) is also preferably represented by the following general formula (102X).

[0624] [ka]

[0625] (In the general formula (102X), R 111 and R 112 One of them is L 111 indicates the bond position with R 133 and R 134 One of them is L 112 indicates the bonding position with R 101 ~R 110 , R 121 ~R 130 , L 111 R is not a bond site with 111 or R 112 And L 112 R is not a bond site with 133 or R 134 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, X 1 CR 143 R 144 , oxygen atom, sulfur atom, or NR 145 and L 111 and L 112 are each independently Single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring 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 atoms, 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-(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 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.)

[0626] 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.

[0627] 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.

[0628] In the compound represented by the general formula (1X), the group represented by the general formula (11X) is also preferably a group represented by the following general formula (11AX) or a group represented by the following general formula (11BX).

[0629] [ka]

[0630] (In the general formula (11AX) and the general formula (11BX), R 121 ~R 131 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, When a plurality of groups represented by the general formula (11AX) are present, the plurality of groups represented by the general formula (11AX) are the same or different from each other, When a plurality of groups represented by the general formula (11BX) are present, the plurality of groups represented by the general formula (11BX) are the same or different from each other, L 131 and L 132 are each independently Single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms, In the general formula (11AX) and the general formula (11BX), * indicates a bonding position with the benz[a]anthracene ring in the general formula (1X).

[0631] The compound represented by the general formula (1X) is also preferably represented by the following general formula (103X).

[0632] [ka]

[0633] (In the general formula (103X), R 101 ~R 110 And R 112 respectively represent R in the general formula (1X). 101 ~R 110 And R 112 is synonymous with R 121 ~R 131 , L 131 and L 132 respectively represent R in the general formula (11BX). 121 ~R 131 , L 131 and L 132 is equivalent to

[0634] In the compound represented by the general formula (1X), L 131 is also preferably a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms.

[0635] In the compound represented by the general formula (1X), L 132 is also preferably a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms.

[0636] In the compound represented by the general formula (1X), R 101 ~R 112 It is also preferable that two or more of the above are groups represented by the general formula (11X).

[0637] In the compound represented by the general formula (1X), R 101 ~R 112 At least two of the above are groups represented by general formula (11X), and Ar101 is preferably a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms.

[0638] 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 carbon atoms as represented by the formula (I) is not a substituted or unsubstituted benz[a]anthryl group.

[0639] In the compound represented by the general formula (1X), R other than the group represented by the general formula (11X) 101 ~R 112 are each independently Hydrogen atoms, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms; a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or It is preferably a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms.

[0640] In the compound represented by the general formula (1X), R other than the group represented by the general formula (11X) 101 ~R 112 teeth, Hydrogen atoms, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, or A substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms is preferred.

[0641] In the compound represented by the general formula (1X), R other than the group represented by the general formula (11X) 101 ~R 112is preferably a hydrogen atom.

[0642] Compounds represented by the general formula (12X) In one aspect of the organic EL device according to this embodiment, the first compound is a compound represented by the following general formula (12X).

[0643] [ka]

[0644] (In the general formula (12X), R 1201 ~R 1210 At least one pair of adjacent pairs of joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring; R does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring. 1201 ~R 1210 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 802A group represented by Halogen atoms, Cyano group, Nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms, or A group represented by the general formula (121), However, when the substituted or unsubstituted monocyclic ring has a substituent, the substituent when the substituted or unsubstituted condensed ring has a substituent, and R 1201 ~R 1210 At least one of the above is a group represented by general formula (121), When a plurality of groups represented by the general formula (121) are present, the plurality of groups represented by the general formula (121) are the same or different from each other, L 1201 teeth, Single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms, Ar 1201 teeth, 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, mx2 is 0, 1, 2, 3, 4 or 5; L 1201 If there are two or more, there are two or more L 1201 are identical or different from each other, Ar 1201 If there are two or more, there are two or more Ar 1201 are identical or different from each other, In the general formula (121), * indicates the bonding position to the ring represented by the general formula (12X).

[0645] In the general formula (12X), R 1201 ~R 1210 A pair of adjacent pairs of R 1201 and R1202 With R 1202 and R 1203 With R 1203 and R 1204 With R 1204 and R 1205 With R 1205 and R 1206 With R 1207 and R 1208 With R 1208 and R 1209 and R 1209 and R 1210 It is paired with .

[0646] Compounds represented by the general formula (13X) In one aspect of the organic EL device according to this embodiment, the first compound is a compound represented by the following general formula (13X).

[0647] [ka]

[0648] (In the general formula (13X), R 1301 ~R 1310 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)R801 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, a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms, or A group represented by the general formula (131), However, R 1301 ~R 1310 At least one of the above is a group represented by general formula (131), When a plurality of groups represented by the general formula (131) are present, the plurality of groups represented by the general formula (131) are the same or different from each other, L 1301 teeth, Single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms, Ar 1301 teeth, 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, mx3 is 0, 1, 2, 3, 4 or 5; L 1301 If there are two or more, there are two or more L 1301 are identical or different from each other, Ar 1301 If there are two or more, there are two or more Ar 1301 are identical or different from each other, In the general formula (131), * indicates the bonding position to the fluoranthene ring in the general formula (13X).

[0649] In the organic EL device according to this embodiment, R 1301 ~R 1310In the general formula (13X), the pair of adjacent two or more of R 1301 and R 1302 With R 1302 and R 1303 With R 1303 and R 1304 With R 1304 and R 1305 With R 1305 and R 1306 With R 1307 and R 1308 With R 1308 and R 1309 and R 1309 and R 1310 It is paired with .

[0650] Compounds represented by the general formula (14X) In one aspect of the organic EL device according to this embodiment, the first compound is a compound represented by the following general formula (14X).

[0651] [ka]

[0652] (In the general formula (14X), R 1401 ~R 1410 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-(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 Halogen atoms, Cyano group, Nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms, or A group represented by the general formula (141), However, R 1401 ~R 1410 At least one of the above is a group represented by general formula (141), When a plurality of groups represented by the general formula (141) are present, the plurality of groups represented by the general formula (141) are the same or different from each other, L 1401 teeth, Single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms, Ar 1401 teeth, 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, mx4 is 0, 1, 2, 3, 4 or 5; L 1401 If there are two or more, there are two or more L 1401 are identical or different from each other, Ar 1401 If there are two or more, there are two or more Ar 1401 are identical or different from each other, In the general formula (141), * indicates the bonding position to the ring represented by the general formula (14X).

[0653] A compound represented by the general formula (15X) In one aspect of the organic EL device according to this embodiment, the first compound is a compound represented by the following general formula (15X).

[0654] [ka]

[0655] (In the general formula (15X), R 1501 ~R 1514 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, a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms, or A group represented by the general formula (151), However, R 1501 ~R 1514 At least one of the above is a group represented by 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 or different from each other, L 1501 teeth, Single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms, Ar 1501 teeth, 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, mx5 is 0, 1, 2, 3, 4 or 5; L 1501 If there are two or more, there are two or more L 1501 are identical or different from each other, Ar 1501 If there are two or more, there are two or more Ar 1501 are identical or different from each other, In the general formula (151), * indicates the bonding position to the ring represented by the general formula (15X).

[0656] Compounds represented by the general formula (16X) In one aspect of the organic EL device according to this embodiment, the first compound is a compound represented by the following general formula (16X).

[0657] [ka]

[0658] (In the general formula (16X), R 1601 ~R 1614 are each independently Hydrogen atoms, 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, a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms, or A group represented by the general formula (161), However, R 1601 ~R 1614 At least one of the above is a group represented by 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 or different from each other, L 1601 teeth, Single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms, Ar 1601 teeth, 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, mx6 is 0, 1, 2, 3, 4 or 5, L 1601If there are two or more, there are two or more L 1601 are identical or different from each other, Ar 1601 If there are two or more, there are two or more Ar 1601 are identical or different from each other, In the general formula (161), * indicates the bonding position to the ring represented by the general formula (16X).

[0659] A compound represented by the general formula (1000B) In one aspect of the organic EL device according to this embodiment, the first compound is a compound represented by the following general formula (1000B).

[0660] [ka]

[0661] (In the general formula (1000B), X is an oxygen atom or a sulfur atom; R 10 ~R 19 Among the groups of two or more adjacent joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring. 10 ~R 19 are each independently Hydrogen atoms, 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 )(R902 )(R 903 ) a group represented by -O-(R 904 ) a group represented by -S-(R 905 ) a group represented by -N(R 906 )(R 907 ) 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, Nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms, or A group represented by the general formula (110), However, R 10 ~R 19 At least one of the above is a group represented by general formula (110), When a plurality of groups represented by the general formula (110) are present, the plurality of groups represented by the general formula (110) are the same or different from each other, L 100 teeth, Single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms, mx is 1, 2 or 3; L 100 If there are two or more, there are two or more L 100 are identical or different from each other, Ar 100 teeth, 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, Ar100 If there are two or more, there are two or more Ar 100 are identical or different from each other, In the general formula (110), * indicates a 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 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 carbon atoms, 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, R 901 If there are multiple R 901 are the same or different from each other, R 902 If there are multiple R 902 are the same or different from each other, R 903 If there are multiple R 903 are the same or different from each other, R 904 If there are multiple R 904 are the same or different from each other, R 905 If there are multiple R 905 are the same or different from each other, R 906 If there are multiple R 906 are the same or different from each other, R 907 If there are multiple R 907 are the same or different from each other, R 801 If there are multiple R801 are the same or different from each other, R 802 If there are multiple R 802 are either identical or different.)

[0662] In the general formula (1000B), X is preferably an oxygen atom.

[0663] The compound represented by the general formula (1000B) has at least one group represented by the general formula (110) and is preferably a compound represented by the following general formula (100).

[0664] [ka]

[0665] (In the general formula (100), R 10 ~R 19 each independently represents R in the general formula (1000B). 10 ~R 19 is synonymous with Ar 100 , L 100 and mx are each Ar in the general formula (110). 100 , L 100 and mx.)

[0666] The compound represented by the general formula (1000B) is also preferably a compound represented by the following general formula (101) or (102).

[0667] [ka]

[0668] [ka]

[0669] (In the general formula (101) and the general formula (102), R 10 ~R19 each independently represents R in the general formula (1000B). 10 ~R 19 is synonymous with Ar 100 , L 100 and mx are each Ar in the general formula (110). 100 , L 100 and mx.)

[0670] In the general formula (1000B), R other than the group represented by the general formula (110) 10 ~R 19 are preferably 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 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms.

[0671] In the general formula (1000B), R other than the group represented by the general formula (110) 10 ~R 19 is preferably a hydrogen atom.

[0672] In the general formula (1000B), L 100 is preferably a single bond or an arylene group containing three or less substituted or unsubstituted benzene rings.

[0673] In the general formula (1000B), L 100 is preferably not a substituted or unsubstituted anthrylene group.

[0674] In the general formula (1000B), L 100 is also preferably a single bond.

[0675] In the general formula (1000B), -(L 100 ) mx It is also preferable that the group represented by - is a group represented by any one of the following general formulae (111) to (120).

[0676] [ka]

[0677] [ka]

[0678] (In the general formulae (111) to (120), * indicates a bonding position.)

[0679] In the above general formula (110), -(L 100 ) mx The group represented by - is preferably a group represented by the above general formula (111) or (112).

[0680] In the general formula (1000B), Ar 100 is preferably an aryl group having four or more condensed substituted or unsubstituted benzene rings.

[0681] In the general formula (1000B), Ar 100 is preferably an aryl group having four substituted or unsubstituted benzene rings condensed thereto, or an aryl group having five substituted or unsubstituted benzene rings condensed thereto.

[0682] 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).

[0683] [ka]

[0684] [ka]

[0685] [ka]

[0686] [ka]

[0687] (In the above general formula (1100), R 111 ~R 120 One of them is a bond, In the general formula (1200), R 1201 ~R 1212 One of them is a bond, In the general formula (1300), R 1301 ~R 1314 One of them is a bond, In the general formula (1400), R 1401 ~R 1414 One of them is a bond, In the general formula (1500), R 1501 ~R 1514 One of them is a bond, In the general formula (1600), R 1601 ~R 1612 One of them is a bond, In the general formula (1700), R 1701 ~R 1710 One of them is a bond, In the general formula (1800), R 1801 ~R 1812 One of them is a bond, R is not a bond 111 ~R 120 , R is not a bond 1201 ~R 1212 , R is not a bond 1301 ~R 1314 , R is not a bond 1401 ~R 1414 , R is not a bond 1501 ~R 1514 , R is not a bond 1601 ~R 1612 , R is not a bond 1701 ~R 1710 , and R which is not a bond1801 ~R 1812 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 -N(R 906 )(R 907 ) 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, Nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or It is a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms.

[0688] The group represented by the general formula (1100) is R 111 When R is a bond, it is a group represented by the following general formula (1112): 120 When R is a bond, it is a group represented by the following general formula (1113): 119 When is a bond, it is a group represented by the following general formula (1114).

[0689] [ka]

[0690] (In the general formula (1112), the general formula (1113) and the general formula (1114), R 111 ~R 120 are each independently Hydrogen atoms, 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 -N(R 906 )(R 907 ) 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, 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, In the general formulae (1112) to (1114), * indicates a bonding position.

[0691] In the general formulae (1100), (1200), (1300), (1400), (1500), (1600), (1700), and (1800), R which is not a bond 111 ~R 120 , R is not a bond 1201 ~R 1212 , R is not a bond1301 ~R 1314 , R is not a bond 1401 ~R 1414 , R is not a bond 1501 ~R 1514 , R is not a bond 1601 ~R 1612 , R is not a bond 1701 ~R 1710 , and R which is not a bond 1801 ~R 1812 are preferably 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 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms.

[0692] In the general formulae (1100), (1200), (1300), (1400), (1500), (1600), (1700), and (1800), R which is not a bond 111 ~R 120 , R is not a bond 1201 ~R 1212 , R is not a bond 1301 ~R 1314 , R is not a bond 1401 ~R 1414 , R is not a bond 1501 ~R 1514 , R is not a bond 1601 ~R 1612 , R is not a bond 1701 ~R 1710 , and R which is not a bond 1801 ~R 1812 is preferably a hydrogen atom.

[0693] 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) or general formula (102) is replaced with a benzothioxanthene ring.

[0694] A compound represented by the general formula (17X-1) In one aspect of the organic EL device according to this embodiment, the first compound is a compound represented by the following general formula (17X-1).

[0695] [ka]

[0696] (In the general formula (17X-1), X 14 is an oxygen atom or a sulfur atom, R 1401 ~R 1404 At least one pair of adjacent pairs of joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R 1405 ~R 1410 At least one pair of adjacent pairs of joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring. 1401 ~R 1410 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, a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms, or A group represented by the general formula (171-1), However, R 1401 ~R 1410 At least one of the above is a group represented by general formula (171-1), When a plurality of groups represented by the general formula (171-1) are present, the plurality of groups represented by the general formula (171-1) are the same or different from each other, L 1701 teeth, Single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms, Ar 1701 teeth, 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, mx7 is 0, 1, 2, 3, 4 or 5; L 1701 If there are two or more, there are two or more L 1701 are identical or different from each other, Ar 1701 If there are two or more, there are two or more Ar 1701 are identical or different from each other, R 901 ~R 905 , R 801 and R 802each independently represents R in the general formula (1000B). 901 ~R 905 , R 801 and R 802 is synonymous with In the general formula (171-1), * indicates the bonding position to the ring represented by the general formula (17X-1).

[0697] [ka]

[0698] (In the general formula (17X-2), R 1401 ~R 1410 and X 14 each independently represents R in the general formula (17X-1). 1401 ~R 1410 and X 14 is synonymous with The group represented by the general formula (171-2) has the same meaning as the group represented by the general formula (171-1), and in the general formula (171-2), L 1701 , Ar 1701 and mx7 each independently represent L in the general formula (171-1). 1701 , Ar 1701 and mx7, When a plurality of groups represented by the general formula (171-2) are present, the plurality of groups represented by the general formula (171-2) are the same or different from each other, In the general formula (171-2), * indicates the bonding position to the ring represented by the general formula (17X-2).

[0699] [ka]

[0700] (In the general formula (17X-3), R 1401 ~R 1410 and X 14 each independently represents R in the general formula (17X-1). 1401 ~R 1410 and X14 is synonymous with The group represented by the general formula (171-3) is the same as the group represented by the general formula (171-1), and in the general formula (171-3), L 1701 , Ar 1701 and mx7 each independently represent L in the general formula (171-1). 1701 , Ar 1701 and mx7, When a plurality of groups represented by the general formula (171-3) are present, the plurality of groups represented by the general formula (171-3) are the same or different from each other, In the general formula (171-3), * indicates the bonding position to the ring represented by the general formula (17X-3).

[0701] In the general formulae (17X-1), (17X-2) and (17X-3), X 14 is preferably an oxygen atom.

[0702] A compound represented by the general formula (18) In one aspect of the organic EL device according to this embodiment, the first compound is a compound represented by the following general formula (18).

[0703] [ka]

[0704] (In the general formula (18), X 18 is an oxygen atom or a sulfur atom, R 1801 ~R 1804 At least one pair of adjacent pairs of joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R 1805 ~R 1808 At least one pair of adjacent pairs of joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R 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 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, a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms, or A group represented by the general formula (18X), However, R 1801 ~R 1808 At least one of the above is a group represented by general formula (18X), When a plurality of groups represented by the general formula (18X) are present, the plurality of groups represented by the general formula (18X) are the same or different from each other, L1801 teeth, Single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms, Ar 1801 teeth, 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, mx8 is 0, 1, 2, 3, 4 or 5, L 1801 If there are two or more, there are two or more L 1801 are identical or different from each other, Ar 1801 If there are two or more, there are two or more Ar 1801 are identical or different from each other, R 901 ~R 905 , R 801 and R 802 each independently represents R in the general formula (1000B). 901 ~R 905 , R 801 and R 802 is synonymous with In the general formula (18X), * indicates the bonding position to the ring represented by the general formula (18).

[0705] In the general formula (18), X 18 is preferably an oxygen atom.

[0706] In the first compound, any group described as "substituted or unsubstituted" is preferably an "unsubstituted" group.

[0707] In the organic EL device according to this embodiment, it is also preferred that the second host material has a linking structure in the molecule including a benzene ring and a naphthalene ring linked by a single bond, the benzene ring and the naphthalene ring in the linking structure are each independently further fused with a single ring or a fused ring or are not fused with a single ring or a fused ring, and the benzene ring and the naphthalene ring in the linking structure are further linked by a bridge in at least one portion other than the single bond. When the second host material has a linking structure including such cross-links, it is expected that deterioration of the chromaticity of the organic EL device can be suppressed. In this case, the second host material may have a linking structure (sometimes referred to as a benzene-naphthalene linking structure) containing a benzene ring and a naphthalene ring linked by a single bond in the molecule, as represented by the following formula (X1) or formula (X2), as a minimum unit, and the benzene ring may be further condensed with a monocyclic or condensed ring, or the naphthalene ring may be further condensed with a monocyclic or condensed ring. For example, even when the second host material has a linking structure (sometimes referred to as a naphthalene-naphthalene linking structure) containing a naphthalene ring and a naphthalene ring linked by a single bond in the molecule, as represented by the following formula (X3), formula (X4), or formula (X5), one of the naphthalene rings contains a benzene ring, and therefore contains a benzene-naphthalene linking structure.

[0708] [ka]

[0709] In the organic EL element according to this embodiment, it is also preferable that the bridge 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 bridge structure containing a double bond in a portion other than a single bond.

[0710] When the benzene ring and the naphthalene ring in the benzene-naphthalene linked structure are further linked by a bridge at at least one portion other than a single bond, for example, in the case of the formula (X1), the linked structure (fused ring) is represented by the following formula (X11), and in the case of the formula (X3), the linked structure (fused ring) is represented by the following formula (X31). When the benzene ring and the naphthalene ring in the benzene-naphthalene linked structure are further linked by a bridge containing a double bond in a portion other than the single bond, for example, in the case of the formula (X1), the linked structure (fused ring) is represented by the following formula (X12); in the case of the formula (X2), the linked structure (fused ring) is represented by the following formula (X21) or formula (X22); in the case of the formula (X4), the linked structure (fused ring) is represented by the following formula (X41); and in the case of the formula (X5), the linked structure (fused ring) is represented by the following formula (X51). When the benzene ring and the naphthalene ring in the benzene-naphthalene linked structure are further linked by a bridge containing a heteroatom (e.g., an oxygen atom) in at least one portion other than a single bond, for example, in the case of the above formula (X1), the linked structure (fused ring) is represented by the following formula (X13).

[0711] [ka]

[0712] In the organic EL device according to this 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 that the first benzene ring and the second benzene ring in the biphenyl structure are further linked by a bridge in at least one portion other than the single bond.

[0713] In the organic EL device according to this 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 at one part other than the single bond. By having the second host material have a biphenyl structure including such a bridge, it is expected that the deterioration of the chromaticity of the organic EL device can be suppressed.

[0714] In the organic EL device according to this embodiment, it is also preferable that the crosslink contains a double bond. In the organic EL device according to this embodiment, it is also preferable that the crosslink does not contain a double bond.

[0715] It is also preferred that the first and second benzene rings in the biphenyl structure are further linked by the bridge at two portions other than the single bond.

[0716] In the organic EL device according to this embodiment, it is also preferred that the first and second benzene rings in the biphenyl structure are further linked by the bridge at two portions other than the single bond, and the bridge does not contain a double bond. By having the second host material have a biphenyl structure containing such a bridge, it is expected that the deterioration of the chromaticity of the organic EL device can be suppressed.

[0717] For example, when the first benzene ring and the second benzene ring in the biphenyl structure represented by the following formula (BP1) are further linked by a bridge at at least one portion other than a single bond, the biphenyl structure becomes a linked structure (condensed ring) such as the following formulae (BP11) to (BP15).

[0718] [ka]

[0719] The formula (BP11) is a structure linked by a bridge that does not contain a double bond in one part other than the single bond. The formula (BP12) is a structure in which the two groups are linked by a bridge containing a double bond in one part other than the single bond. The formula (BP13) is a structure in which the two moieties other than the single bond are linked by a bridge that does not contain a double bond. The formula (BP14) has a structure in which one of the two moieties other than the single bond is linked by a bridge that does not contain a double bond, and the other of the two moieties other than the single bond is linked by a bridge that contains a double bond. The formula (BP15) is a structure in which the two moieties other than the single bond are linked by a bridge containing a double bond.

[0720] In the first compound, any group described as "substituted or unsubstituted" is preferably an "unsubstituted" group.

[0721] (Method for producing the first compound) The first compound that can be used in the organic EL device according to the present embodiment can be produced by a known method. The first compound can also be produced by following a known method and using known alternative reactions and raw materials suited to the target product.

[0722] (Specific examples of the first compound) Specific examples of the first compound that can be used in the organic EL device according to this embodiment include the following compounds, however, the present invention is not limited to these specific examples of the first compound. In the present specification, in specific examples of compounds, D represents a deuterium atom, Me represents a methyl group, and tBu represents a tert-butyl group.

[0723] [ka]

[0724] [ka]

[0725] [ka]

[0726] [ka]

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[0738] [ka]

[0739] [ka]

[0740] (Luminescent Compounds) In one aspect of the organic EL device according to this embodiment, the light-emitting compound is one or more compounds selected from the group consisting of a compound represented by the following general formula (3), a compound represented by the following general formula (4), a compound represented by the following general formula (5), a compound represented by the following general formula (6), a compound represented by the following general formula (7), a compound represented by the following general formula (8), a compound represented by the following general formula (9), and a compound represented by the following general formula (10).

[0741] In one aspect of the organic EL device according to this embodiment, the light-emitting compound contained in the first light-emitting layer is a first light-emitting compound, and the light-emitting compound contained in the second light-emitting layer is a second light-emitting compound. As in the description of the light-emitting compound, the first light-emitting compound and the second light-emitting compound are each independently one or more compounds selected from the group consisting of compounds represented by the following general formulas (3) to (10).

[0742] In one aspect of the organic EL device according to this embodiment, the light-emitting compound is a compound represented by the following general formula (6).

[0743] (Compound represented by general formula (6)) The compound represented by the general formula (6) will be described.

[0744] [ka]

[0745] (In the general formula (6), Ring a, ring b and ring c each independently represent a substituted or unsubstituted aromatic hydrocarbon ring having 6 to 50 ring carbon atoms, or A substituted or unsubstituted heterocycle having 5 to 50 ring atoms, R 601 and R 602 each independently forms a substituted or unsubstituted heterocycle together with the ring a, ring b, or ring c, or does not form a substituted or unsubstituted heterocycle; R that does not form a substituted or unsubstituted heterocycle 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 carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or It is a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms.

[0746] In one aspect of the organic EL device according to this embodiment, ring a, ring b, and ring c are rings (substituted or unsubstituted aromatic hydrocarbon rings having 6 to 50 ring carbon atoms, or substituted or unsubstituted heterocycles having 5 to 50 ring atoms) fused to the central fused two-ring structure of general formula (6) composed of a boron atom and two nitrogen atoms.

[0747] The "aromatic hydrocarbon rings" of ring a, ring b, and ring c have the same structure as a compound in which a hydrogen atom has been introduced into an "aryl group." The "aromatic hydrocarbon ring" of ring a contains the three carbon atoms on the central fused two-ring structure of general formula (6) as ring-forming atoms. The "aromatic hydrocarbon ring" of ring b and ring c contains the two carbon atoms on the central fused two-ring structure of general formula (6) as ring-forming atoms.

[0748] Specific examples of the "substituted or unsubstituted aromatic hydrocarbon ring having 6 to 50 ring carbon atoms" include compounds in which a hydrogen atom has been introduced into the "aryl group" described in specific example group G1. The "heterocycles" of ring a, ring b and ring c have the same structure as the compounds in which a hydrogen atom has been introduced into the above-mentioned "heterocyclic group". The "heterocycle" of ring a contains three carbon atoms on the central fused bicyclic structure of general formula (6) as ring-forming atoms. The "heterocycle" of rings b and c contains two carbon atoms on the central fused bicyclic structure of general formula (6) as ring-forming atoms. Specific examples of the "substituted or unsubstituted heterocycle having 5 to 50 ring-forming atoms" include compounds in which a hydrogen atom has been introduced into the "heterocyclic group" described in specific example group G2.

[0749] R 601 and R 602 may each independently bond to ring a, ring b, or ring c to form a substituted or unsubstituted heterocycle. In this case, the heterocycle contains the nitrogen atom on the central fused two-ring structure of the general formula (6). In this case, the heterocycle may contain a heteroatom other than the nitrogen atom. R 601 and R 602 is bonded to the ring a, ring b, or ring c, specifically means that an atom constituting the ring a, ring b, or ring c is bonded to R 601 and R 602 It means that the atoms that make up R are bonded together. For example, R 601 is bonded to the a ring, R 601 A two-ring (or three-ring or more) nitrogen-containing heterocycle may be formed by condensing a ring containing the same with ring a. Specific examples of the nitrogen-containing heterocycle include compounds corresponding to the nitrogen-containing two-ring or more condensed heterocyclic groups in specific example group G2. R 601 When is bonded to ring b, R 602 When R is bonded to ring a, 602 The same applies when is bonded to ring c. R 601 and R 602 may each independently not be bonded to ring a, ring b, or ring c.

[0750] In one embodiment, the ring a, ring b, and ring c in the general formula (6) are each independently a substituted or unsubstituted aromatic hydrocarbon ring having 6 to 50 ring carbon atoms. In one embodiment, the ring a, the ring b, and the ring c in the general formula (6) are each independently a substituted or unsubstituted benzene ring or naphthalene ring.

[0751] 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 carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms, A substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms is preferred.

[0752] In one embodiment, the compound represented by the general formula (6) is a compound represented by the following general formula (62).

[0753] [ka]

[0754] (In the general formula (62), R 601A is R 611 and R 621 or a substituted or unsubstituted heterocyclic ring is formed by bonding to one or more selected from the group consisting of R 602A is R 613 and R 614 or a substituted or unsubstituted heterocyclic ring is formed by bonding to one or more selected from the group consisting of R that does not form a substituted or unsubstituted heterocycle 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 carbon atoms, 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, R 611 ~R 621 At least one pair of adjacent pairs of joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R does not form the substituted or unsubstituted heterocycle, does not form the substituted or unsubstituted monocycle, and does not form the substituted or unsubstituted fused ring. 611 ~R 621 are each independently Hydrogen atoms, 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 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 -N(R 906 )(R 907 ) a group represented by Halogen atoms, Cyano group, Nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or It is a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms. (In the general formula (62), R 901 , R 902 , R 903 , R 904 , R 905 , R 906 and R 907 are each independently 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 carbon atoms, 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, R 901 If there are multiple R 901 are the same or different from each other, R 902 If there are multiple R 902 are the same or different from each other, R 903 If there are multiple R 903 are the same or different from each other, R 904 If there are multiple R 904 are the same or different from each other, R 905 If there are multiple R 905 are the same or different from each other, R 906 If there are multiple R 906 are the same or different from each other, R 907 If there are multiple R 907 are either identical or different.)

[0755] R in the general formula (62) 601A and R 602A are R in the general formula (6), 601 and R 602 is a group corresponding to For example, R 601A and R 611may be bonded to form a two-ring (or three-ring or more) nitrogen-containing heterocycle in which a ring containing the ring is condensed with a benzene ring corresponding to the ring a. Specific examples of the nitrogen-containing heterocycle include compounds corresponding to the nitrogen-containing two-ring or more condensed heterocyclic groups in the specific example group G2. R 601A and R 621 If R is bonded, 602A and R 613 When R is bonded, 602A and R 614 The same applies when is combined.

[0756] R 611 ~R 621 At least one pair of adjacent pairs of joined together to form a substituted or unsubstituted monocyclic ring, or They may be bonded to each other to form a substituted or unsubstituted fused ring. For example, R 611 and R 612 may be bonded to the 6-membered ring to form a structure in which a benzene ring, an indole ring, a pyrrole ring, a benzofuran ring, a benzothiophene ring, or the like is condensed with the 6-membered ring to which they are bonded, and the condensed ring formed is a naphthalene ring, a carbazole ring, an indole ring, a dibenzofuran ring, or a dibenzothiophene ring.

[0757] In one embodiment, R 611 ~R 621 are each independently Hydrogen atoms, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms; a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or It is a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms.

[0758] In one embodiment, R 611 ~R 621 are each independently Hydrogen atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or It is a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms.

[0759] In one embodiment, R 611 ~R 621 are each independently A hydrogen atom, or It is a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms.

[0760] In one embodiment, R 611 ~R 621 are each independently A hydrogen atom, or a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms; R 611 ~R 621 At least one of them is a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms.

[0761] In one embodiment, the compound represented by the general formula (62) is a compound represented by the following general formula (63).

[0762] [ka]

[0763] (In the general formula (63), R 631 is R 646 or not forming a substituted or unsubstituted heterocycle, R 633 is R 647 or not forming a substituted or unsubstituted heterocycle, R 634 is R 651 or not forming a substituted or unsubstituted heterocycle, R 641 is R 642or not forming a substituted or unsubstituted heterocycle, R 631 ~R 651 At least one pair of adjacent pairs of joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R does not form the substituted or unsubstituted heterocycle, does not form the substituted or unsubstituted monocycle, and does not form the substituted or unsubstituted fused ring. 631 ~R 651 are each independently 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 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 -N(R 906 )(R 907 ) a group represented by Halogen atoms, Cyano group, Nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or It is a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms.

[0764] R 631 is R 646 may combine with R to form a substituted or unsubstituted heterocycle. For example, R 631 and R 646 Combined, R 646may be bonded to a benzene ring, a ring containing N, and a benzene ring corresponding to ring a to form a nitrogen-containing heterocyclic ring having three or more condensed rings. Specific examples of the nitrogen-containing heterocyclic ring include compounds corresponding to the nitrogen-containing heterocyclic ring group having three or more condensed rings in the specific example group G2. 633 and R 647 If R is bonded, 634 and R 651 When R is bonded, 641 and R 642 The same applies when is combined.

[0765] In one embodiment, R 631 ~R 651 are each independently Hydrogen atoms, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms; a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or It is a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms.

[0766] In one embodiment, R 631 ~R 651 are each independently Hydrogen atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or It is a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms.

[0767] In one embodiment, R 631 ~R 651 are each independently A hydrogen atom, or It is a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms.

[0768] In one embodiment, R 631 ~R 651 are each independently A hydrogen atom, or a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms; R 631 ~R 651 At least one of them is a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms.

[0769] In one embodiment, the compound represented by the general formula (63) is a compound represented by the following general formula (63A):

[0770] [ka]

[0771] (In the general formula (63A), R 661 teeth, Hydrogen atoms, 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 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, R 662 ~R 665 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 carbon atoms, or It is a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms.

[0772] In one embodiment, R 661 ~R 665 are each independently a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, or It is a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms.

[0773] In one embodiment, R 661 ~R 665 are each independently a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms.

[0774] In one embodiment, the compound represented by the general formula (63) is a compound represented by the following general formula (63B):

[0775] [ka]

[0776] (In the general formula (63B), R 671 and R 672 are each independently Hydrogen atoms, 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 carbon atoms, -N(R 906 )(R 907 ) a group represented by a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, R 673 ~R 675 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 carbon atoms, -N(R 906 )(R 907 ) a group represented by It is a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms.

[0777] In one embodiment, the compound represented by the general formula (63) is a compound represented by the following general formula (63B').

[0778] [ka]

[0779] (In the general formula (63B′), R 672 ~R 675 each independently represents R in the general formula (63B) 672 ~R 675 is equivalent to

[0780] In one embodiment, R 671 ~R 675 At least one of the 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 carbon atoms, -N(R 906 )(R 907 ) a group represented by It is a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms.

[0781] In one embodiment, R 672 teeth, Hydrogen atoms, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms; -N(R 906 )(R 907 ) a group represented by a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, R 671 and R 673 ~R 675 are each independently a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms; -N(R 906 )(R 907 ) a group represented by It is a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms.

[0782] In one embodiment, the compound represented by the general formula (63) is a compound represented by the following general formula (63C):

[0783] [ka]

[0784] (In the general formula (63C), R 681 and R 682 are each independently 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 carbon atoms, or It is a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms. R 683 ~R 686 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 carbon atoms, or It is a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms.

[0785] In one embodiment, the compound represented by the general formula (63) is a compound represented by the following general formula (63C'):

[0786] [ka]

[0787] (In the general formula (63C'), R 683 ~R 686 each independently represents R in the general formula (63C) 683 ~R 686 is equivalent to

[0788] In one embodiment, R 681 ~R 686 are each independently a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, or It is a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms.

[0789] In one embodiment, R 681 ~R 686 each independently represents a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms.

[0790] The compound represented by the general formula (6) is first prepared by connecting the ring a, the ring b and the ring c to a linking group (NR 601 Groups containing NR 602 An intermediate can be produced by linking the a, b and c rings with a linking group (a group containing a boron atom) (reaction 2). In reaction 1, an amination reaction such as the Bachbrut-Hartwig reaction can be applied. In reaction 2, a tandem hetero Friedel-Crafts reaction can be applied.

[0791] In one embodiment, the compound represented by the general formula (6) is a compound represented by the following general formula (42-2):

[0792] [ka]

[0793] (In the general formula (42-2), R 611 ~R617 , R 601A and R 602A each independently represents R in the general formula (62) 611 ~R 617 , R 601A and R 602A is synonymous with X 4 is an oxygen atom or a sulfur atom, R 701 ~R 704 At least one pair of adjacent pairs of joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R does not form the substituted or unsubstituted monocyclic ring and does not form the substituted or unsubstituted condensed ring. 701 ~R 704 are each independently 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 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 -N(R 906 )(R 907 ) 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, In the general formula (42-2), R 901 , R902 , R 903 , R 904 , R 905 , R 906 and R 907 each independently represents R in the general formula (62) 901 , R 902 , R 903 , R 904 , R 905 , R 906 and R 907 is equivalent to

[0794] (Specific examples of compounds represented by formula (6)) Specific examples of the compound represented by the general formula (6) are given below, but these are merely illustrative, and the compound represented by the general formula (6) is not limited to the following specific examples.

[0795] [ka]

[0796] [ka]

[0797] [ka]

[0798] [ka]

[0799] [ka]

[0800] [ka]

[0801] [ka]

[0802] [ka]

[0803] [ka]

[0804] [ka]

[0805] [ka]

[0806] [ka]

[0807] [ka]

[0808] (Compound represented by general formula (3)) The compound represented by the general formula (3) will be described.

[0809] [ka]

[0810] (In the general formula (3), R 301 ~R 310 At least one pair of adjacent pairs of joined together to form a substituted or unsubstituted monocyclic ring, or combine with each other to form a substituted or unsubstituted fused ring, or Not bonded to each other, R 301 ~R 310 At least one of the above is a monovalent group represented by the following general formula (31): R does not form the substituted or unsubstituted monocyclic ring, does not form the substituted or unsubstituted condensed ring, and is not a monovalent group represented by the following general formula (31): 301 ~R 310 are each independently 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 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 -N(R 906 )(R 907 ) a group represented by Halogen atoms, Cyano group, Nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or It is a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms.

[0811] [ka]

[0812] (In the general formula (31), Ar 301 and Ar 302 are each independently 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, L 301 ~L 303 are each independently Single bond, a substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 30 ring atoms, * indicates the bonding position in the pyrene ring in the general formula (3).

[0813] In the luminescent compound, R 901 , R 902 , R 903 , R 904 , R 905 , R 906 and R 907 are each independently Hydrogen atoms, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms; a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, 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, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, R 901 If there are multiple R 901 are the same or diff...

Claims

1. An anode; A cathode; a light emitting region disposed between the anode and the cathode; a hole transport zone disposed between the anode and the light emitting region; the light emitting region comprises at least one light emitting layer; the hole transport zone includes a first hole transport layer, a second hole transport layer, and a third hole transport layer; the first hole transport layer, the second hole transport layer, and the third hole transport layer are disposed in this order from the anode side; The refractive index NM of the constituent material contained in the second hole transport layer ２ is the refractive index N M of the constituent material contained in the first hole transport layer １ and the refractive index NM of the constituent material contained in the third hole transport layer ３ are greater than the first hole transport layer and the third hole transport layer contain at least one same material; the hole transport region further includes at least one layer of a hole injection layer and a fourth hole transport layer, the hole injection layer is disposed between the anode and the first hole transport layer; the hole injection layer comprises an acceptor material; the fourth hole transport layer is disposed between the third hole transport layer and the light emitting region; the fourth hole transport layer contains one or more compounds having an ionization potential of 5.6 eV or more; The fourth hole transport layer has a thickness of 15 nm or less. Organic electroluminescent element.

2. The refractive index NM of the constituent material contained in the hole injection layer Ａ and the refractive index NM of the constituent material contained in the fourth hole transport layer ４ At least one of the refractive index N M of the constituent material contained in the second hole transport layer ２ or the refractive index NM ２ Greater than The organic electroluminescence device according to claim 1 .

3. The total thickness of the hole transport region is 110 nm or more and 150 nm or less. The organic electroluminescence device according to claim 1 or 2.

4. the first hole transport layer, the second hole transport layer, and the third hole transport layer each have a thickness of 20 nm or more; The organic electroluminescence device according to claim 1 .

5. the first hole transport layer comprises a first hole transport zone material; the second hole transport layer comprises a second hole transport zone material; the third hole transport layer comprises a third hole transport zone material; the first hole transport zone material and the third hole transport zone material are the same or different from each other; the first hole transport zone material and the second hole transport zone material are different from each other; the third hole transport zone material and the second hole transport zone material are different from each other; The organic electroluminescence device according to claim 1 .

6. At least one of the energy level of the highest occupied molecular orbital (HOMO) (cHT1) of the first hole transport band material and the energy level of the highest occupied molecular orbital (HOMO) (cHT3) of the third hole transport band material is −5.6 eV or less; The organic electroluminescence device according to claim 5 .

7. At least one of the hole mobility μh (cHT1) of the first hole transport zone material, the hole mobility μh (cHT2) of the second hole transport zone material, and the hole mobility μh (cHT3) of the third hole transport zone material is 1.0×10 －５ cm ２ / Vs is greater than The organic electroluminescence device according to claim 5 or 6.

8. The absolute value of the difference between the energy level of the highest occupied molecular orbital (HOMO) of the second hole transport band material (cHT2) and the energy level of the highest occupied molecular orbital (HOMO) of the third hole transport band material (cHT3) satisfies the relationship of the following mathematical formula (Math. B1): The organic electroluminescence device according to claim 5 . |HOMO(cHT2)-HOMO(cHT3)|≦0.3 ... (number B1)

9. the hole transport region includes a first mixed layer between the first hole transport layer and the second hole transport layer, the first mixed layer contains the first hole transport zone material and the second hole transport zone material; The organic electroluminescence device according to claim 5 .

10. the hole transport region includes a second mixed layer between the second hole transport layer and the third hole transport layer; the second mixed layer contains the second hole transport zone material and the third hole transport zone material; The organic electroluminescence device according to claim 5 .

11. The hole transport region includes the hole injection layer. The organic electroluminescence device according to claim 1 .

12. 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 device according to claim 11 . 【Chemistry 1】 (The first ring structure represented by the general formula (11) is condensed with at least one ring structure of a substituted or unsubstituted aromatic hydrocarbon ring having 6 to 50 ring carbon atoms and a substituted or unsubstituted heterocycle having 5 to 50 ring atoms in the molecule of the acceptor material, =X １０ The structure represented by the formula (11a), (11b), (11c), (11d), (11e), (11f), (11g), (11h), (11i), (11j), (11k) or (11m) is represented by the following formula (11a), (11b), (11c), (11d), (11e), (11f), (11g), (11h), (11i), (11j), (11k) or (11m). 【Chemistry 2】 【Chemistry 3】 (In the above general formula (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 Hydrogen atoms, Halogen atoms, Hydroxy groups, 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 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 -N(R ９０６ ) (R ９０７ ) a group represented by a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or It is a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms. (In the general formula (12), X １ ~X ５ are each independently Nitrogen atom, R １５ a carbon atom bonded to a carbon atom bonded to another atom in the molecule of the acceptor material, X １ ~X ５ at least one of which is a carbon atom bonded to another atom in a molecule of the acceptor material; R １５ teeth, Hydrogen atoms, Halogen atoms, 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 carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring 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 -N(R ９０６ ) (R ９０７ ) a 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, Carboxy group, a substituted or unsubstituted ester group; a substituted or unsubstituted carbamoyl group, Nitro groups, and selected from the group consisting of substituted or unsubstituted siloxanyl groups; R １５ When there are multiple R １５ are the same or different.) (In the acceptor material, R ９０１ ~R ９０７ are each independently Hydrogen atoms, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, 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, R ９０１ If there are multiple R ９０１ are identical or different from each other, R ９０２ If there are multiple R ９０２ are identical or different from each other, R ９０３ If there are multiple R ９０３ are identical or different from each other, R ９０４ If there are multiple R ９０４ are identical or different from each other, R ９０５ If there are multiple R ９０５ are identical or different from each other, R ９０６ If there are multiple R ９０６ are identical or different from each other, R ９０７ If there are multiple R ９０７ are the same or different from each other.)

13. The acceptor material has at least one cyano group. The organic electroluminescence device according to claim 11 or 12.

14. the hole injection layer comprises 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 11 .

15. a ratio of a total thickness of the hole injection layer and the first hole transport layer to a thickness of the third hole transport layer is 1:1.5 to 1.5:1; The organic electroluminescence device according to claim 11 .

16. a ratio of a total thickness of the hole injection layer and the first hole transport layer, a thickness of the second hole transport layer, and a thickness of the third hole transport layer is 1:1.5:1 to 1:2.5:1; The organic electroluminescence device according to claim 11 .

17. an electron transport zone disposed between the cathode and the light emitting region; the electron transport zone comprises at least one electron transport layer; at least one electron transport layer in the electron transport zone comprises a nitrogen-containing compound; The nitrogen-containing compound has at least one of a five-membered ring containing a nitrogen atom and a six-membered ring containing a nitrogen atom. The organic electroluminescence device according to claim 1 .

18. At least one electron transport layer in the electron transport zone 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 claim 17.

19. The light-emitting region includes a light-emitting layer containing a host material and a light-emitting compound that emits light having a maximum peak wavelength of 500 nm or less. The organic electroluminescence device according to claim 1 .

20. The half width of the maximum peak of the luminescent compound is 1 nm or more and 30 nm or less.

20. The organic electroluminescence device according to claim 19.

21. The light-emitting compound is a compound represented by the following general formula (6): The organic electroluminescence device according to claim 19 or 20. 【Chemistry 4】 (In the general formula (6), Ring a, ring b and ring c each independently represent a substituted or unsubstituted aromatic hydrocarbon ring having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heterocyclic ring having 5 to 50 ring atoms, R ６０１ and R ６０２ each independently forms a substituted or unsubstituted heterocycle together with the ring a, ring b, or ring c, or does not form a substituted or unsubstituted heterocycle; R which does not form a substituted or unsubstituted heterocycle 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 carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or It is a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms.

22. The light emitting region comprises two or more light emitting layers. The organic electroluminescence device according to claim 1 .

23. An electronic device comprising the organic electroluminescence element according to any one of claims 1 to 22.

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