Polycyclic aromatic compounds

Abstract

[Technical Problem] To provide a compound useful as a material for organic devices such as organic electroluminescent devices. [Solution] A polycyclic aromatic compound having a structure composed of one or more structural units represented by Formula (1): in [Formula I], rings A to C are each a substituted or unsubstituted aryl ring or a substituted or unsubstituted heteroaryl ring; and Ar1 and Ar2 are each a substituted or unsubstituted aryl or a substituted or unsubstituted heteroaryl, at least one of which is a monovalent group represented by the formula (Ar) wherein A represents a substituent; Rg1 and Rg2 are each hydrogen or a substituent; and B1 and B2 are alkyl groups in which one or more hydrogens are substituted with deuterium. In the structure, one or more of the aryl or heteroaryl rings may be fused with one or more cycloalkane rings, and one or more hydrogens in the structure may be substituted with deuterium.

Description

polycyclic aromatic compounds The present invention relates to polycyclic aromatic compounds. In particular, the present invention relates to polycyclic aromatic compounds containing nitrogen and boron. The present invention also relates to materials for organic devices, organic electroluminescent devices, and display devices and lighting devices containing the polycyclic aromatic compounds. Existing display devices using electroluminescent light-emitting elements have been studied in various ways because they can save power and be made thinner. In addition, organic electroluminescent elements made of organic materials have been actively studied because they can be made lighter and larger. In particular, the development of organic materials with luminescent properties such as blue, one of the three primary colors of light, and the development of organic materials with charge transport capabilities such as holes and electrons (which have the potential to become semiconductors or superconductors) have been actively studied regardless of whether they are high-molecular compounds or low-molecular compounds. Organic electroluminescent devices have a structure comprising a pair of electrodes, each comprising an anode and a cathode, and one or more layers comprising an organic compound, positioned between the pair of electrodes. The layers comprising the organic compound include a light-emitting layer, a charge transport / injection layer that transports or injects charges such as holes and electrons, and various organic materials suitable for these layers are being developed. Among them, patent documents 1 to 4 disclose that polycyclic aromatic compounds containing boron are useful as materials for organic electroluminescent devices, etc. [Prior Art Literature] (Patent Document 1) International Publication No. 2015 / 102118 (Patent Document 2) Korean Patent No. 10-2453929 (Patent Document 3) International Publication No. 2021 / 107744 (Patent Document 4) Specification of U.S. Patent Application Publication No. 2023 / 0075017 As mentioned above, various materials are being developed for use in organic EL devices, but in order to expand the range of materials for organic EL devices, development of materials composed of new compounds is desired. The present invention aims to provide a novel compound useful as a material for organic devices such as organic EL elements. The present inventors have diligently studied to solve the above problems and, as a result, have succeeded in producing a novel polycyclic aromatic compound having superior luminescent properties among polycyclic aromatic compounds having a structure similar to the compounds described in Patent Documents 1 to 3. Furthermore, they have discovered that an excellent organic EL device can be obtained by arranging a layer containing this polycyclic aromatic compound between a pair of electrodes to form an organic EL device, thereby completing the present invention. That is, the present invention provides the following polycyclic aromatic compound, and further, a material for an organic device comprising the following polycyclic aromatic compound. The present invention specifically has the following configuration. <1> A polycyclic aromatic compound having a structure composed of one or two or more structural units represented by formula (1); In equation (1), Ring A, ring B and ring C are each independently a substituted or unsubstituted aryl ring or a substituted or unsubstituted heteroaryl ring, Ar 1 and Ar 2 are each independently hydrogen, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted alkyl, or substituted or unsubstituted cycloalkyl, provided that Ar 1 and Ar 2 At least one of them is a monovalent group represented by the formula (Ar), Among the foods (Ar), * is the bonding position with the nitrogen atom in formula (1), A is hydrogen, deuterium, or a substituent, R g1 and R g2 are each independently hydrogen or a substituent, B 1 and B 2 are each independently an alkyl in which one or more hydrogens are replaced by deuterium, But, A, R g1 and R g2 Two adjacent ones can be combined to form a ring, In the above structure, at least one of the aryl ring or heteroaryl ring may be condensed with at least one cycloalkane, the cycloalkane may have a substituent, and at least one -CH2- among the cycloalkanes may be substituted with -O-. In the above structure, one or more hydrogens may be replaced with deuterium, and one or more nitrogens may be nitrogen-15( 15 N) may be substituted, and one or more sulfurs may be sulfur-33( 33 S), Hwang-34( 34 S) or Hwang-36( 36 S) may be substituted, and one or more oxygens may be oxygen-17( 17 O) or oxygen-18( 18 O) may be substituted, and one or more carbons may be carbon-13( 13 C) may be substituted, and one or more borons are boron-11( 11 It may be replaced with B). <2> A structure having a structure composed of one or more structural units represented by formula (1-A) or formula (1-B), <1> Polycyclic aromatic compounds described in; Ar 1 and Ar 2 Ar in equation (1) 1 and Ar 2 are identical to each other, Among equations (1-A) and (1-B), R 1 Inland R 11 are each independently hydrogen or a substituent, R 1 Inland R 11 Among them, two adjacent ones on one benzene ring may be combined with each other to form a substituted or unsubstituted aryl ring or a substituted or unsubstituted heteroaryl ring together with the benzene ring. In equation (1-B), X is, >O, >NR NX , >C(-R CX )2, >Si(-R IX )2, >S or >Se, and R NX , R CX and R IX are each independently hydrogen, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted alkyl, or substituted or unsubstituted cycloalkyl, and two R CX They may be combined with each other to form a ring, and two R IX They may be combined with each other to form a ring, In the above structure, at least one of the aryl ring or heteroaryl ring may be condensed with at least one cycloalkane, and the cycloalkane may be substituted with at least one substituent, and at least one -CH2- among the cycloalkane may be replaced with -O-. In the above structure, one or more hydrogens may be replaced with deuterium, and one or more nitrogens may be nitrogen-15( 15 N) may be substituted, and one or more sulfurs may be sulfur-33( 33 S), Hwang-34( 34 S) or Hwang-36( 36 S) may be substituted, and one or more oxygens may be oxygen-17( 17 O) or oxygen-18( 18 O) may be substituted, and one or more carbons may be carbon-13( 13C) may be substituted, and one or more borons are boron-11( 11 It may be replaced with B). <3> The base represented by the formula (Ar) is the base represented by the formula (Ar-1), <1> Polycyclic aromatic compounds described in; Among the foods (Ar-1), * indicates the bonding position with the nitrogen atom in formula (1), A is the same as A in formula (Ar), and D is deuterium. <4> A is substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl. <1> Polycyclic aromatic compounds described in . <5> A base represented by the formula (Ar) or a base represented by the formula (Ar-2) or (Ar-3), <1> Polycyclic aromatic compounds described in; In formula (Ar-2) and formula (Ar-3), * indicates the bonding position with the nitrogen atom of formula (1), Me is methyl, and D is deuterium. <6> A is one independently selected from the group consisting of groups represented by formulas (A-1) to (A-37), <1> Polycyclic aromatic compounds described in; Among the above formulas (A-1) to (A-37), # is a bonding position with a carbon atom of formula (Ar), and one or more hydrogens of each ring may be independently substituted with deuterium, substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted cycloalkyl or substituted silyl, and two adjacent substituted or unsubstituted alkenyls of each ring may be bonded to each other to form a substituted or unsubstituted aryl ring or a substituted or unsubstituted heteroaryl ring together with the ring. Z is >O, >NR NX , >C(-RCX )2, >Si(-R IX )2, >S or >Se, and R NX , R CX and R IX are each independently hydrogen, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted alkyl, or substituted or unsubstituted cycloalkyl, and two R CX can be combined with each other to form a ring, and two R IX They can combine with each other to form a ring, Me is methyl, tBu is t-butyl, tAm is t-amyl, and D is deuterium. <7> Ar 1 and Ar 2 A monovalent group, each independently represented by the formula (Ar), <1> Polycyclic aromatic compounds described in . <8> Indicated by one of the following formulas: <1> Polycyclic aromatic compounds described in; In the formula, Me represents methyl, tBu represents t-butyl, tAm represents t-amyl, and D represents deuterium. <9> It comprises a pair of electrodes consisting of an anode and a cathode and a light-emitting layer disposed between the pair of electrodes, wherein the light-emitting layer <1> ∼ <8> An organic electroluminescent device containing a polycyclic aromatic compound described in any one of the following. <10> The above light-emitting layer comprises a host and the above polycyclic aromatic compound as a dopant, <9> An organic electroluminescent device described in . <11> The above host is an anthracene compound, a fluorene compound, a pyrene compound or a dibenzochrycene compound, <10> An organic electroluminescent device described in . <12> <9> A display device or lighting device comprising an organic electroluminescent element as described above. According to the present invention, a novel polycyclic aromatic compound useful as a material for organic devices such as organic electroluminescent devices is provided. The polycyclic aromatic compound of the present invention can be used in the manufacture of organic devices such as organic electroluminescent devices. Figure 1 is a schematic cross-sectional diagram showing an example of an organic electroluminescent device. Hereinafter, the present invention will be described in detail. The description of the constituent elements described below may be based on representative embodiments or specific examples, but the present invention is not limited to such embodiments. In addition, in this specification, the numerical range indicated using “∼” means a range that includes the numerical values ​​described before and after “∼” as the lower limit and the upper limit. In addition, in the description of the structural formula in this specification, “hydrogen” means “hydrogen atom (H).” Similarly, “carbon atom (C)” may be referred to as “carbon.” In this specification, the term “adjacent groups” refers to two groups each bonded to two adjacent atoms (two atoms directly bonded by a covalent bond) in the structural formula. In this specification, “Me” represents methyl, “Et” represents ethyl, “nBu” represents n-butyl (normal butyl), “tBu” represents t-butyl (tertiary butyl), “iBu” represents isobutyl, “secBu” represents sec-butyl, “nPr” represents n-propyl (normal propyl), “iPr” represents isopropyl, “tAm” represents t-amyl, “2EH” represents 2-ethylhexyl, “tOct” represents t-octyl, “Ph” represents phenyl, “Mes” represents mesityl (2,4,6-trimethylphenyl), “Ad” represents 1-adamantyl, “Tf” represents trifluoromethanesulfonyl, “TMS” represents trimethylsilyl, and “D” represents deuterium. In this specification, an organic electroluminescent device is sometimes referred to as an “organic EL device.” In this specification, there are cases where a chemical structure or a substituent is expressed by carbon number. However, in cases where a chemical structure is substituted by a substituent, or a substituent is additionally substituted by a substituent, the carbon number refers to the carbon number of each chemical structure or substituent, and does not refer to the total carbon number of the chemical structure and the substituent, or the total carbon number of the substituent and the substituent. For example, “a substituent B having a carbon number Y substituted by a substituent A having a carbon number X” means that “a substituent A having a carbon number X” is substituted for “a substituent B having a carbon number Y”, and the carbon number Y is not the total carbon number of substituents A and B. In addition, for example, “a substituent B having a carbon number Y substituted by a substituent A” means that “a substituent A (without a carbon number limitation)” is substituted for “a substituent B having a carbon number Y”, and the carbon number Y is not the total carbon number of substituents A and B. This specification describes numerous structural formulas for aromatic compounds. While aromatic compounds are described as a combination of double and single bonds, in reality, due to resonance between π electrons, even a single substance can have multiple equivalent resonance structures, such as alternating double and single bonds. Although this specification describes only one resonance structure for a single substance, unless otherwise specified, other organically equivalent resonance structures are also included. Also, in this specification, there are cases where the expression “may be doing ∼” is used, which means “is not doing ∼, or is doing ∼.” <Description of rings and substituents> First, the rings and substituents used in this specification are described in detail below. As used herein, “aryl ring” includes, for example, an aryl ring having 6 to 30 carbon atoms, preferably an aryl ring having 6 to 16 carbon atoms, more preferably an aryl ring having 6 to 12 carbon atoms, and particularly preferably an aryl ring having 6 to 10 carbon atoms. Specific examples of “aryl rings” include the monocyclic benzene ring, the bicyclic bicyclic bicyclic bicyclic naphthalene ring, indene ring, the tricyclic terphenyl ring (m-terphenyl, o-terphenyl, p-terphenyl), the fused tricyclic acenaphthylene ring, fluorene ring, phenalene ring, phenanthrene ring, anthracene ring, the fused tetracyclic triphenylene ring, pyrene ring, naphthacene ring, chrysene ring, benzoanthracene ring, fluoranthene ring, and the fused pentacyclic perylene ring, pentacene ring, and benzofluoranthene ring. In addition, the fluorene ring, benzofluorene ring, and indene ring also include structures in which a fluorene ring, a benzofluorene ring, and a cyclopentane ring are spiro-bonded, respectively. In addition, the fluorene ring, benzofluorene ring, and indene ring include those in which two of the two hydrogens of the methylene in the structure are each replaced with an alkyl such as methyl as the first substituent described below, thereby forming a dimethylfluorene ring, a dimethylbenzofluorene ring, a dimethylindene ring, etc. As used herein, the “heteroaryl ring” includes, for example, a heteroaryl ring having 2 to 30 carbon atoms, preferably a heteroaryl ring having 2 to 25 carbon atoms, more preferably a heteroaryl ring having 2 to 20 carbon atoms, still more preferably a heteroaryl ring having 2 to 15 carbon atoms, and particularly preferably a heteroaryl ring having 2 to 10 carbon atoms. In addition, the “heteroaryl ring” includes, for example, a heterocycle containing, in addition to carbon, 1 to 5 heteroatoms selected from oxygen, sulfur, nitrogen, boron, selenium, phosphorus, and tellurium as ring constituent atoms. Specific examples of “heteroaryl rings” include pyrrole ring, oxazole ring, isoxazole ring, thiazole ring, isothiazole ring, imidazole ring, oxadiazole ring (furazan ring, etc.), thiadiazole ring, triazole ring, tetrazole ring, pyrazole ring, pyridine ring, pyrimidine ring, pyridazine ring, pyrazine ring, triazine ring, indole ring, isoindole ring, 1H-indazole ring, benzoimidazole ring, benzoxazole ring, benzothiazole ring, 1H-benzotriazole ring, quinoline ring, isoquinoline ring, cinnoline ring, quinazoline ring, quinoxaline ring, phthalazine ring, naphthyridine ring, purine ring, pteridine ring, carbazole ring, acridine ring, phenoxathiine ring, phenoxazine ring, phenothiazine ring, Phenazine ring, phenazacillin ring, indolizine ring, furan ring, benzofuran ring, isobenzofuran ring, dibenzofuran ring, thiophene ring, benzothiophene ring, dibenzothiophene ring, thianthrene ring, indolocarbazole ring, benzoindolocarbazole ring, dibenzoindolocarbazole ring, naphthobenzofuran ring, dioxin ring, dihydroacridine ring, xanthene ring, thioxanthene ring, dibenzodioxin ring, dioxabora naphthoanthracene ring (5,9-dioxa-13b-bora-13bH-naphtho[3,2,1-de]anthracene ring, etc.), benzoselenophene ring, dibenzoselenophene ring, azacarbazole ring, azadibenzothiophene ring, azadibenzofuran ring, azadibenzoselenophene ring, Examples thereof include an azatriphenylene ring, an imidazoimidazole ring, an indoloindole ring, a benzofurocarbazole ring, a benzothienocarbazole ring, an indenocarbazole ring, a selenophenocarbazole ring, a spiro[fluorene-9,9'-xanthene] ring, and a spirobi[silafluorene] ring. In addition, a dihydroacridine ring, a xanthene ring, and a thioxanthene ring are preferably those in which two of the two hydrogens of the methylene in the structure are each replaced by an alkyl such as methyl as a first substituent described later, thereby forming a dimethyldihydroacridine ring, a dimethylxanthene ring, a dimethylthioxanthene ring, and the like. In addition, a bipyridine ring, a phenylpyridine ring, a pyridylphenyl ring, which are two-ring systems, and a terpyridyl ring, a bispyridylphenyl ring, and a pyridylbiphenyl ring, which are three-ring systems, can also be cited as “heteroaryl rings.” In addition, “heteroaryl ring” is defined to include a pyran ring. A ring represented by the following formula (BO) is also included. In this specification, a substituent may be substituted with an additional substituent. For example, a specific substituent may be described as “substituted or unsubstituted.” This means that the specific substituent may be substituted with one or more additional substituents, or may not be substituted. In the same sense, the phrase “may be substituted” may also be used. In this specification, the specific substituent in this case may be referred to as a “first substituent,” and the additional substituent may be referred to as a “second substituent.” In this specification, the substituent group Zα is composed of a substituent of the substituent group Z and a substituent represented by the formula (A30) described below. In this specification, the substituent group Z is Aryl, which may be substituted with one or more groups selected from the group consisting of aryl, heteroaryl, alkyl, cycloalkyl, cyano, and halogen, Heteroaryl, which may be substituted with one or more groups selected from the group consisting of aryl, heteroaryl, alkyl, cycloalkyl, cyano, and halogen, Diarylamino which may be substituted with one or more groups selected from the group consisting of aryl, heteroaryl, alkyl, cycloalkyl, cyano, and halogen (two aryls may be bonded to each other through a linking group), Diheteroarylamino which may be substituted with one or more groups selected from the group consisting of aryl, heteroaryl, alkyl, cycloalkyl, cyano, and halogen (two heteroaryls may be bonded to each other via a linking group), Arylheteroarylamino which may be substituted with one or more groups selected from the group consisting of aryl, heteroaryl, alkyl, cycloalkyl, cyano, and halogen (aryl and heteroaryl may be bonded to each other through a linking group), Diarylboryl which may be substituted with one or more groups selected from the group consisting of aryl, heteroaryl, alkyl, cycloalkyl, cyano, and halogen (two aryls may be connected through a single bond or a linking group), Alkyl, which may be substituted with one or more groups selected from the group consisting of aryl, heteroaryl, cycloalkyl, cyano, and halogen, Cycloalkyl which may be substituted with one or more groups selected from the group consisting of aryl, heteroaryl, alkyl, cycloalkyl, cyano, and halogen, Alkoxy, which may be substituted with one or more groups selected from the group consisting of aryl, heteroaryl, cycloalkyl, cyano, and halogen, Aryloxy, which may be substituted with one or more groups selected from the group consisting of aryl, heteroaryl, alkyl, cycloalkyl, cyano, and halogen, Arylthio, which may be substituted with one or more groups selected from the group consisting of aryl, heteroaryl, alkyl, cycloalkyl, cyano, and halogen, Alkenyl, which may be substituted with one or more groups selected from the group consisting of aryl, heteroaryl, alkyl, cycloalkyl, cyano, and halogen, It consists of substituted silyl, cyano and halogen. The second substituent, aryl, in each group of the substituent group Z may be further substituted with aryl, heteroaryl, alkyl, cycloalkyl, cyano, or halogen, and similarly, the second substituent, heteroaryl, may be substituted with aryl, heteroaryl, alkyl, cycloalkyl, cyano, or halogen. In the present specification, when referring to a “substituent,” the type of the substituent is not particularly limited, but unless otherwise specifically described, any one group selected from the substituent group Z may be used. For example, when a group that is “substituted or unsubstituted” is substituted, the group may be substituted with one or more groups selected from the substituent group Z. In the present specification, “aryl” is, for example, aryl having 6 to 30 carbon atoms, and preferably aryl having 6 to 20 carbon atoms, aryl having 6 to 16 carbon atoms, aryl having 6 to 12 carbon atoms, or aryl having 6 to 10 carbon atoms. A specific “aryl” can be a monovalent group that excludes one hydrogen from the aforementioned “aryl ring.” For example, monocyclic phenyl, bicyclic biphenylyl (2-biphenylyl, 3-biphenylyl or 4-biphenylyl), fused bicyclic naphthyl (1-naphthyl or 2-naphthyl), tricyclic terphenylyl (m-terphenyl-2'-yl, m-terphenyl-4'-yl, m-terphenyl-5'-yl, o-terphenyl-3'-yl, o-terphenyl-4'-yl, p-terphenyl-2'-yl, m-terphenyl-2-yl, m-terphenyl-3-yl, m-terphenyl-4-yl, o-terphenyl-2-yl, o-terphenyl-3-yl, o-terphenyl-4-yl, p-terphenyl-2-yl, p-terphenyl-3-yl, or p-terphenyl-4-yl), fused tricyclic acenaphthylene-(1-, 3-, 4- or 5-), fluoren-(1-, 2-, 3-, 4- or 9-)yl, phenalen-(1- or 2-), phenanthren-(1-, 2-, 3-, 4- or 9-)yl, or anthracen-(1-, 2-, or 9-)yl, a tetracyclic quaterphenylyl (5'-phenyl-m-terphenyl-2-yl, 5'-phenyl-m-terphenyl-3-yl, 5'-phenyl-m-terphenyl-4-yl, or m-quaterphenyl), a fused tetracyclic quaternary ... 6-, 7-, 8-, 9-, 10-, 11-, or 12-)yl, fluoranthene-(1-, 2-, 3-, 4-, 5-, 6-, 7-, 8-, 9-, or 10-)yl, or perylene-(1-, 2-, or 3-)yl, which is a fused pentacyclic ring, or pentacene-(1-, 2-, 5-, or 6-)yl, benzo[k]fluoranthene-(1-, 2-, 3-, 4-, 5-, 6-, 7-, 8-, 9-, 10-, 11-, or 12-)yl, etc. In addition, a monovalent group of spirofluorene can be mentioned. In addition, aryl as a second substituent also includes a structure in which the aryl is substituted with one or more groups selected from the group consisting of aryl such as phenyl (a specific example is a group described above), alkyl such as methyl (a specific example is a group described below), and cycloalkyl such as cyclohexyl or adamantyl (a specific example is a group described below). As an example, a group in which the 9th position of fluorenyl as the second substituent is substituted with an aryl such as phenyl, an alkyl such as methyl, or a cycloalkyl such as cyclohexyl or adamantyl may be mentioned. “Arylene” is, for example, arylene having 6 to 30 carbon atoms, preferably arylene having 6 to 20 carbon atoms, arylene having 6 to 16 carbon atoms, arylene having 6 to 12 carbon atoms, or arylene having 6 to 10 carbon atoms. A specific “arylene” may be, for example, a divalent group in which one hydrogen is removed from the aforementioned “aryl” (a monovalent group). “Heteroaryl” is, for example, a heteroaryl having 2 to 30 carbon atoms, preferably a heteroaryl having 2 to 25 carbon atoms, a heteroaryl having 2 to 20 carbon atoms, a heteroaryl having 2 to 15 carbon atoms, or a heteroaryl having 2 to 10 carbon atoms. “Heteroaryl” contains, in addition to carbon as a ring constituent atom, at least one, preferably 1 to 5, heteroatoms selected from oxygen, sulfur, nitrogen, and the like. A specific “heteroaryl” may include a monovalent group in which one hydrogen is removed from the aforementioned “heteroaryl ring.” For example, pyrrolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, imidazolyl, oxadiazolyl, thiadiazolyl, triazolyl, tetrazolyl, pyrazolyl, pyridyl, pyrimidinyl, pyridazinyl, pyrazinyl, triazinyl, indolyl, isoindolyl, 1H-indazolyl, benzoimidazolyl, benzoxazolyl, benzothiazolyl, 1H-benzotriazolyl, quinolinyl, isoquinolinyl, cinnolinyl, quinazolinyl, quinoxalinyl, phenanthrolinyl, phthalazinyl, naphthyridinyl, purinyl, pteridinyl, carbazolyl, acridinyl, phenoxathiinyl, phenoxadinyl, phenothiazinyl, phenazinyl, phenaxasilinyl, Indolizinyl, furanyl, benzofuranyl, isobenzofuranyl, dibenzofuranyl, naphthobenzofuranyl, thienyl, benzothienyl, isobenzothienyl, dibenzothienyl, naphthobenzothienyl, a monovalent group of a benzophosphol oxide ring, a monovalent group of a dibenzophosphol oxide ring, furazanyl, thianthrenyl, indolocarbazolyl, benzoindolocarbazolyl, dibenzoindolocarbazolyl, imidazolinyl, or oxazolinyl. In addition, there can be mentioned a monovalent group of spiro[fluorene-9,9'-xanthene], a monovalent group of spirobi[silafluorene], a monovalent group of benzoselenophene, a monovalent group obtained by excluding any one of the hydrogens of the compound represented by the formula (BO), etc. Examples of monovalent groups that can be obtained by excluding hydrogen from any one of the compounds represented by the formula (BO) include the following groups. In the formula, * indicates a bonding position. In addition, heteroaryl as a second substituent also includes a structure in which the heteroaryl is substituted with one or more groups selected from the group consisting of aryl such as phenyl (a specific example is a group described above), alkyl such as methyl (a specific example is a group described below), and cycloalkyl such as cyclohexyl or adamantyl (a specific example is a group described below). Examples thereof include a group in which the 9th position of carbazolyl as a second substituent is substituted with an aryl such as phenyl, an alkyl such as methyl, or a cycloalkyl such as cyclohexyl or adamantyl. In addition, a group in which a nitrogen-containing heteroaryl such as pyridyl, pyrimidinyl, triazinyl, or carbazolyl is further substituted with phenyl or biphenylyl is also included as a heteroaryl as a second substituent. “Heteroarylene” is, for example, a heteroarylene having 2 to 30 carbon atoms, preferably a heteroarylene having 2 to 25 carbon atoms, a heteroarylene having 2 to 20 carbon atoms, a heteroarylene having 2 to 15 carbon atoms, or a heteroarylene having 2 to 10 carbon atoms. In addition, “heteroarylene” is, for example, a divalent group such as a heterocycle containing, in addition to carbon, 1 to 5 heteroatoms selected from oxygen, sulfur, and nitrogen as ring constituent atoms. Specific “heteroarylene” may include, for example, a divalent group in which one hydrogen is removed from the aforementioned “heteroaryl” (monovalent group). “Diarylamino” is an amino substituted with two aryls, and the details of this aryl can be referred to the description of “aryl” mentioned above. “Diheteroarylamino” is an amino group substituted with two heteroaryls, and details of this heteroaryl can be referred to the description of “heteroaryl” mentioned above. “Arylheteroarylamino” is an amino group substituted with aryl and heteroaryl, and details of the aryl and heteroaryl can be referred to the description of “aryl” and “heteroaryl” mentioned above. In the diarylamino as the first substituent, two aryls may be bonded to each other via a linking group, in the diheteroarylamino as the first substituent, two heteroaryls may be bonded to each other via a linking group, and the aryl and heteroaryl of the arylheteroarylamino as the first substituent may be bonded to each other via a linking group. Here, the description “bonding via a linking group” indicates that, for example, two phenyls of diphenylamino form a bond via a linking group, as shown below. In addition, this description also applies to diheteroarylamino and arylheteroarylamino formed with aryl or heteroaryl. (* indicates the binding position.) Connectors are specifically >O, >NR X , >C(-R X )2, -C(-R X )=C(-R X )-, >Si(-R X )2, >S, >CO, >CS, >SO, >SO2, >SeO, >SeO2, >PO, >B(-R X ) and >Se. R X are each independently alkyl, cycloalkyl, aryl or heteroaryl, and may be substituted with alkyl, cycloalkyl, aryl or heteroaryl. In addition, >C(-R X )2, -C(-R X )=C(-R X )-, >Si(-R X )2 Two Rs in each X is a single bond or linker X Y They can be combined with each other to form a ring. X Y As for >O, >NR Y , >C(-R Y )2, >Si(-R Y )2, >S, >CO, >CS, >SO, >SO2 and >Se are examples, and R Yare each independently alkyl, cycloalkyl, aryl or heteroaryl, and may be substituted with alkyl, cycloalkyl, aryl or heteroaryl. However, X Y Go >C(-R Y )2 and >Si(-R Y ) In case of 2, there are 2 R Y are not combined to form additional rings. Also, alkenylene can be mentioned as a connecting group. Any hydrogen of the alkenylene is independently R 2X It can be replaced with R 2X are each independently alkyl, cycloalkyl, substituted silyl, aryl and heteroaryl, and they may be substituted with alkyl, cycloalkyl, substituted silyl and aryl. -C(-R X )=C(-R X )-2 R's X They may be combined with each other to form an aryl ring (such as a benzene ring) or a heteroaryl ring with the C=C to which they are combined. That is, -C(-R X )=C(-R X )- may be arylene (such as 1,2-phenylene) or heteroarylene. In addition, in the present specification, when simply described as “diarylamino”, “diheteroarylamino”, or “arylheteroarylamino”, unless specifically stated otherwise, it is assumed that the explanations “two aryls of the diarylamino may be bonded to each other via a linking group”, “two heteroaryls of the diheteroarylamino may be bonded to each other via a linking group”, and “the aryl and heteroaryl of the arylheteroarylamino may be bonded to each other via a linking group” are added, respectively. “Diarylboryl” is a boryl substituted with two aryls, and the details of this aryl can be referred to the description of “aryl” mentioned above. In addition, these two aryls may be bonded through a single bond or a linking group (e.g., -CH=CH-, -CR=CR-, -C≡C-, >NR, >O, >S, -C(=O)-, >C=S, >S=O, >S(=O)2, >Se(=O), >Se(=O)2, >P(=O), >B(-R), >C(-R)2, >Si(-R)2, or >Se. Here, R of -CR=CR-, R of >NR, R of >B(-R), R of >C(-R)2, and R of >Si(-R) are aryl, heteroaryl, diarylamino, alkyl, alkenyl, alkynyl, cycloalkyl, alkoxy or aryloxy, and at least one hydrogen in the R is further substituted with aryl, heteroaryl, alkyl, alkenyl, alkynyl or cycloalkyl. It may be substituted. In addition, two adjacent R's may be combined to form a ring, and cycloalkylene, arylene, and heteroarylene may be formed. For details of the substituents listed here, the descriptions of “aryl”, “arylene”, “heteroaryl”, “heteroarylene”, and “diarylamino” mentioned above, and the descriptions of “alkyl”, “alkenyl”, “alkynyl”, “cycloalkyl”, “cycloalkylene”, “alkoxy”, and “aryloxy” described below may be cited. In addition, in the present specification, when it is simply described as “diarylboryl”, unless otherwise specified, it is understood that the description that “two aryls of the diarylboryl may be combined with each other via a single bond or a linking group” is added. “Alkyl” may be either straight-chain or branched, for example, straight-chain alkyl having 1 to 24 carbon atoms or branched-chain alkyl having 3 to 24 carbon atoms, and preferably alkyl having 1 to 18 carbon atoms (branched-chain alkyl having 3 to 18 carbon atoms), alkyl having 1 to 12 carbon atoms (branched-chain alkyl having 3 to 12 carbon atoms), alkyl having 1 to 6 carbon atoms (branched-chain alkyl having 3 to 6 carbon atoms), alkyl having 1 to 5 carbon atoms (branched-chain alkyl having 3 to 5 carbon atoms), alkyl having 1 to 4 carbon atoms (branched-chain alkyl having 3 to 4 carbon atoms), etc. Specific “alkyl” includes, for example, methyl, ethyl, n-propyl, isopropyl, 1-ethyl-1-methylpropyl, 1,1-diethylpropyl, 1,1,2-trimethylpropyl, 1,1,2,2-tetramethylpropyl, 1-ethyl-1,2,2-trimethylpropyl, n-butyl, isobutyl, s-butyl, t-butyl, 2-ethylbutyl, 1,1-dimethylbutyl, 3,3-dimethylbutyl, 1,1-diethylbutyl, 1-ethyl-1-methylbutyl, 1-propyl-1-methylbutyl, 1,1,3-trimethylbutyl, 1-ethyl-1,3-dimethylbutyl, n-pentyl, isopentyl, neopentyl, t-pentyl(t-amyl), 1-methylpentyl, 2-propylpentyl, 1,1-dimethylpentyl, 1-Ethyl-1-methylpentyl, 1-propyl-1-methylpentyl, 1-butyl-1-methylpentyl, 1,1,4-trimethylpentyl, n-hexyl, 1-methylhexyl, 2-ethylhexyl, 1,1-dimethylhexyl, 1-ethyl-1-methylhexyl, 1,1,5-trimethylhexyl, 3,5,5-trimethylhexyl, n-heptyl, 1-methylheptyl, 1-hexylheptyl, 1,1-dimethylheptyl, 2,2-dimethylheptyl, 2,6-dimethyl-4-heptyl, n-octyl, t-octyl (1,1,3,3-tetramethylbutyl), 1,1-dimethyloctyl, n-nonyl, n-decyl, 1-methyldecyl, n-undecyl, n-dodecyl, n-tridecyl, n-tetradecyl, n-pentadecyl, n-hexadecyl, n-heptadecyl, n-octadecyl, or n-eicosyl. “Alkylene” is a divalent group obtained by excluding the hydrogen of any one of “alkyl”, for example, methylene, ethylene, and propylene. As for “alkenyl,” the explanation of “alkyl” mentioned above can be referred to, and it is a group in which a C-C single bond in the “alkyl” structure is replaced with a C=C double bond, and includes a group in which not only one but two or more single bonds are replaced with double bonds (also called alkadien-yl or alkatrien-yl). As for “alkenyl”, specifically, alkenyl having 2 to 30 carbon atoms can be mentioned, alkenyl having 2 to 20 carbon atoms is preferable, alkenyl having 2 to 10 carbon atoms is more preferable, alkenyl having 2 to 6 carbon atoms is still more preferable, and alkenyl having 2 to 4 carbon atoms is particularly preferable. Preferred alkenyls are vinyl, 1-propenyl, 2-propenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 4-pentenyl, 1-hexenyl, 2-hexenyl, 3-hexenyl, 4-hexenyl, or 5-hexenyl. “Alkenylene” is a divalent group obtained by removing the hydrogen of any one of “alkenyl” groups, and an example is vinylene. For “alkynyl”, reference may be made to the description of “alkyl” mentioned above, and it is a group in which a C-C single bond in the “alkyl” structure is replaced with a C≡C triple bond, and includes a group in which not only one but two or more single bonds are replaced with triple bonds (also called alkadiyn-yl or alkatriyn-yl). “Cycloalkyl” is, for example, cycloalkyl having 3 to 24 carbon atoms, preferably cycloalkyl having 3 to 20 carbon atoms, cycloalkyl having 3 to 16 carbon atoms, cycloalkyl having 3 to 14 carbon atoms, cycloalkyl having 3 to 12 carbon atoms, cycloalkyl having 5 to 10 carbon atoms, cycloalkyl having 5 to 8 carbon atoms, cycloalkyl having 5 to 6 carbon atoms, or cycloalkyl having 5 carbon atoms. Specific “cycloalkyl” groups include, for example, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, cyclononyl, cyclodecyl, or alkyl (especially methyl) substituents thereof having 1 to 5 or 1 to 4 carbon atoms, bicyclo[1.1.0]butyl, bicyclo[1.1.1]pentyl, bicyclo[2.1.0]pentyl, bicyclo[2.1.1]hexyl, bicyclo[3.1.0]hexyl, bicyclo[2.2.1]heptyl(norbornyl), bicyclo[2.2.2]octyl, adamantyl, diamantyl, decahydronaphthalenyl, or decahydroazulenyl. “Cycloalkylene” is, for example, cycloalkylene having 3 to 24 carbon atoms, preferably cycloalkylene having 3 to 20 carbon atoms, cycloalkylene having 3 to 16 carbon atoms, cycloalkylene having 3 to 14 carbon atoms, cycloalkylene having 3 to 12 carbon atoms, cycloalkylene having 5 to 10 carbon atoms, cycloalkylene having 5 to 8 carbon atoms, cycloalkylene having 5 to 6 carbon atoms, or cycloalkylene having 5 carbon atoms. A specific “cycloalkylene” may be, for example, a structure in which one hydrogen is removed from the aforementioned “cycloalkyl” (a monovalent group) and a divalent group is formed. “Cycloalkenyl” is a group having a structure in which at least one set of two carbon single bonds in the aforementioned “cycloalkyl” becomes a double bond (e.g., a group in which -CH2-CH2- is replaced with -CH=CH-), and examples thereof include groups that do not correspond to aryl. Specifically, 1-cyclohexenyl, 1-cyclopentenyl, etc. can be mentioned. “Alkoxy” is a group represented by “Alk-O-(Alk is alkyl)”, and for details on this alkyl, the description of “alkyl” mentioned above can be cited. “Aryloxy” is a group represented by “Ar-O-(Ar is aryl)”, and for details on this aryl, the description of “aryl” mentioned above can be cited. “Arylthio” is a group represented by “Ar-S-(Ar is aryl)”, and the details of this aryl can be referred to the description of “aryl” mentioned above. “Substituted silyl” is, for example, a silyl substituted with one or more of aryl, alkyl and cycloalkyl, preferably triarylsilyl, trialkylsilyl, tricycloalkylsilyl, dialkylcycloalkylsilyl, or alkyldicycloalkylsilyl. “Triarylsilyl” is a silyl group substituted with three aryls, and the details of this aryl can be referred to the description of “aryl” mentioned above. Specific “triarylsilyl” includes, for example, triphenylsilyl, diphenylmononaphthylsilyl, monophenyldinaphthylsilyl, or trinaphthylsilyl. “Trialkylsilyl” is a silyl group substituted with three alkyl groups, and the description of “alkyl” mentioned above can be cited for details of this alkyl group. Specific “trialkylsilyl” includes, for example, trimethylsilyl, triethylsilyl, tri-n-propylsilyl, triisopropylsilyl, tri-n-butylsilyl, tri-isobutylsilyl, tri-s-butylsilyl, tri-t-butylsilyl, ethyldimethylsilyl, n-propyldimethylsilyl, isopropyldimethylsilyl, n-butyldimethylsilyl, isobutyldimethylsilyl, s-butyldimethylsilyl, t-butyldimethylsilyl, methyldiethylsilyl, n-propyldiethylsilyl, isopropyldiethylsilyl, n-butyldiethylsilyl, s-butyldiethylsilyl, t-butyldiethylsilyl, methyldi-n-propylsilyl, ethyldi-n-propylsilyl, n-butyldi-n-propylsilyl, s-butyldi-n-propylsilyl, t-butyldi-n-propylsilyl, methyldiisopropylsilyl, Ethyldiisopropylsilyl, n-butyldiisopropylsilyl, s-butyldiisopropylsilyl, or t-butyldiisopropylsilyl. “Tricycloalkylsilyl” is a silyl group substituted with three cycloalkyls, and the details of this cycloalkyl can be referred to the description of “cycloalkyl” mentioned above. Specific “tricycloalkylsilyl” includes, for example, tricyclopentylsilyl or tricyclohexylsilyl. “Dialkylcycloalkylsilyl” is a silyl group substituted with two alkyls and one cycloalkyl, and for details of the alkyls and cycloalkyls, the descriptions of “alkyl” and “cycloalkyl” mentioned above can be cited. “Alkyldicycloalkylsilyl” is a silyl group substituted with one alkyl and two cycloalkyls, and for details of the alkyl and cycloalkyl, the description of “alkyl” and “cycloalkyl” mentioned above can be cited. “Halogen” is fluorine, chlorine, bromine or iodine, preferably fluorine, chlorine or bromine, more preferably fluorine or chlorine, and fluorine is even more preferred. In addition, when cyano or halogen is substituted, a state in which all or part of the hydrogen in the aryl ring or heteroaryl ring in the structure is substituted with cyano or halogen is also preferred. The substituent represented by formula (A30) has the following structure. Among the formulas (A30), Ak is hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted cycloalkyl or substituted or unsubstituted cycloalkenyl, and at least one -CH2- among the alkyl, cycloalkyl and cycloalkenyl may be substituted with -O- or -S-, R Ak is a substituted or unsubstituted aryl, a substituted or unsubstituted heteroaryl, a substituted or unsubstituted alkyl or a substituted or unsubstituted cycloalkyl, and R Ak It may be bound to Ak by a linker or single bond, and * is the binding site. In formula (A30), since Ak is the above substituent and does not conjugate with the unshared electron pair on N, the unshared electron pair can be conjugated with the π electron of the bonding site, and a greater wavelength change is possible compared to the case where aryl, etc. is present at the same position. In addition, the same applies to the influence on the multiple resonance effect, and a greater improvement in thermally activated delayed fluorescence (TADF) properties is possible. R Ak It is preferably an aryl which may be substituted with alkyl or cycloalkyl, a heteroaryl which may be substituted with alkyl or cycloalkyl, an alkyl or cycloalkyl, more preferably an aryl which may be substituted with alkyl, a heteroaryl which may be substituted with alkyl, an alkyl or cycloalkyl, more preferably an aryl which may be substituted with alkyl, and particularly preferably a phenyl which may be substituted with methyl. In formula (A30), Ak is preferably an alkyl having 1 to 6 carbon atoms or a cycloalkyl having 3 to 14 carbon atoms, preferably an alkyl having 1 to 4 carbon atoms or a cycloalkyl having 3 to 8 carbon atoms, more preferably an alkyl having 1 to 4 carbon atoms, and even more preferably a methyl. R Ak And Ak may be the same or different, but it is preferable that they are different. R Ak It may be bonded to Ak by a linking group or single bond. In this case, the linking group may include >O, >S or >Si(-R)2, etc. R of >Si(-R)2 is hydrogen, aryl having 6 to 12 carbon atoms, alkyl having 1 to 6 carbon atoms or cycloalkyl having 3 to 14 carbon atoms. R Ak Examples of structures in which Ak is bound by a linker or single bond include: In each of the above formulas, * indicates a bonding position. [When two groups bonded to the same atom bond to each other] In the present specification, when two groups bonded to the same atom may be bonded to each other to form a ring, they may be bonded by a single bond or a linking group (these are collectively referred to as a linking group), and the linking group may be -CH2-CH2-, -CHR-CHR-, -CR2-CR2-, -CH=CH-, -CR=CR-, -C≡C-, -N(-R)-, -O-, -S-, -C(-R)2-, -Si(-R)2-, -C(=O)-, -C(=S)-, -S(=O)-, -S(=O)2-, -Se(=O)-, -Se(=O)2-, -P(=O)-, -B(-R)-, -Si(-R)2- or -Se-, and examples thereof include the following structures. In addition, R of the above -CHR-CHR-, R of -CR2-CR2-, R of -CR=CR-, R of -N(-R)-, R of -C(-R)2-, R of -B(-R)- and R of -Si(-R)2- are each independently hydrogen, aryl which may be substituted with alkyl or cycloalkyl, heteroaryl which may be substituted with alkyl or cycloalkyl, alkyl which may be substituted with cycloalkyl, alkenyl which may be substituted with alkyl or cycloalkyl, alkynyl which may be substituted with alkyl or cycloalkyl, or cycloalkyl which may be substituted with alkyl or cycloalkyl. In addition, two adjacent R's may be combined to form a ring, thereby forming cycloalkylene, arylene, or heteroarylene. As a bonding group, -CR=CR-, -N(-R)-, -O-, -S-, -C(-R)2-, -Si(-R)2-, -C(=O)- and -Se- are preferred as single bonds and linking groups, -CR=CR-, -N(-R)-, -O-, -S-, -C(=O)- and -C(-R)2- are more preferred as single bonds and linking groups, -CR=CR-, -N(-R)-, -O- and -S- are even more preferred as single bonds and linking groups, and a single bond is most preferred. The positions at which two R's are bonded by the bonding group are not particularly limited as long as they are bondable positions, but bonding at the most adjacent positions is preferable, and for example, when the two groups are phenyl, bonding at the ortho (2nd position) positions based on the bonding position of "C" or "Si" in phenyl (1st position) is preferable (see the structural formula above). <Stereoisomers, etc.> The polycyclic aromatic compound of the present invention may have enantiomers or diastereomers depending on the type of substituent, etc., but regardless of the described structural formula, any pure form of any stereoisomer, any mixture of stereoisomers, racemates, etc. are all included within the scope of the present invention. <1. Polycyclic aromatic compounds> <Overall Structure> It has already been confirmed that polycyclic aromatic compounds in which aromatic rings are linked by heteroatoms such as boron, nitrogen, oxygen, and sulfur have a large HOMO-LUMO gap (band gap Eg in a thin film). This is because the six-membered ring containing the heteroatom has low aromaticity, and the decrease in the HOMO-LUMO gap accompanying the expansion of the conjugated system is suppressed. In addition, it was discovered that the HOMO-LUMO gap can be arbitrarily changed depending on the type and linking method of the heteroatom. This is thought to be because the HOMO and LUMO energies can be arbitrarily shifted depending on the spatial diffusion and energy of the empty orbital or lone pair of electrons of the heteroatom. These polycyclic aromatic compounds have a narrow half-width of the fluorescence emission peak, and when used as a dopant in organic EL devices, high color purity emission is obtained, because the excited states SOMO1 and SOMO2 are localized on each atom by electronic perturbation of heteroatoms. For the same reason, △E S1T1It exhibits thermally activated delayed fluorescence when made small, and high efficiency can be obtained when used as an emitting dopant in an organic EL device. Additionally, by introducing a substituent, the HOMO and LUMO energies can be arbitrarily shifted, making it possible to optimize the ionization potential or electron affinity depending on the surrounding materials. In the present invention, in particular, it was discovered that a polycyclic aromatic compound having a structure composed of one or two or more structural units represented by formula (1) having a specific group, which is a polycyclic aromatic compound in which an aromatic ring such as a benzene ring and a benzofuran ring are connected by a hetero element such as boron or nitrogen, enables the production of an organic electroluminescent device having a narrower half-width of an emission spectrum, a longer lifespan, and higher emission efficiency, compared to a polycyclic aromatic compound having a similar structure. The polycyclic aromatic compound of the present invention is a polycyclic aromatic compound having a structure composed of one or two or more structural units represented by formula (1) (hereinafter, sometimes referred to as “a polycyclic aromatic compound including a structural unit represented by formula (1)”). In equation (1), Ar 1 and Ar 2 At least one of them is a monovalent group represented by the formula (Ar), and in the formula (Ar), B 1 and B 2 are each independently an alkyl in which one or more hydrogens are replaced by deuterium, and also R g1 , R g2 and A are each independently hydrogen, deuterium, or a substituent. Hereinafter, a polycyclic aromatic compound including a structural unit represented by formula (1) is described in detail. <Description of ring structures in compounds> In formula (1), “A,” “B,” and “C” within the circles represent the ring structures represented by each circle. The structure represented by formula (1) has a structure in which three or more aromatic rings, namely ring A, ring B, and ring C, are connected by boron and oxygen to form an additional ring structure. The formed ring structure is a condensed ring structure composed of five or more rings. Ring A, ring B and ring C are each independently a substituted or unsubstituted aryl ring or a substituted or unsubstituted heteroaryl ring. Ring A forms a trivalent group having bonds to three consecutive atoms (preferably carbon) on the aryl ring or heteroaryl ring in the structural formula. Ring A is bonded to two N (nitrogen) and B (boron) through these three bonds. The ring that has the atoms having the bonds in ring A as ring constituent atoms is preferably a 5-membered ring or a 6-membered ring, and is more preferably a 6-membered ring. This ring may be fused with another ring. Examples of 6-membered rings include a benzene ring, a pyridine ring, a pyrazine ring, and a pyrimidine ring. Examples of 6-membered rings fused with another ring include a naphthalene ring, a quinoline ring, a dibenzofuran ring, a dibenzothiophene ring, and a carbazole ring. Examples of five-membered rings include furan rings, thiophene rings, pyrrole rings, and thiazole rings. Examples of five-membered rings fused with another ring include benzofuran rings, benzothiophene rings, and indole rings. Another example of a fused ring is the indene ring. Among the aryl ring or heteroaryl ring in the A ring, a benzene ring is preferred. Both the B ring and the C ring form a divalent group having bonds to two adjacent atoms (preferably carbon) on the aryl ring or heteroaryl ring in the structure. The B ring is bonded to N (nitrogen) and B (boron) with the two bonds, and the C ring is bonded to N (nitrogen) and B (boron) with the two bonds. In each of the B ring and the C ring, the ring having the atoms having the two bonds as ring constituent atoms is preferably a 5-membered ring or a 6-membered ring, and is more preferably a 6-membered ring. This ring may be fused with another ring. Examples of 6-membered rings include a benzene ring, a pyridine ring, a pyrazine ring, and a pyrimidine ring. Examples of 6-membered rings fused with another ring include a naphthalene ring, a quinoline ring, a benzofuran ring, a benzothiophene ring, an indole ring, a benzoselenophene ring, a dibenzofuran ring, a dibenzothiophene ring, a carbazole ring, and a dibenzoselenophene ring. Examples of 5-membered rings include a furan ring, a thiophene ring, a pyrrole ring, a thiazole ring, and a selenophene ring. Examples of 5-membered rings fused with another ring include a benzofuran ring, a benzothiophene ring, an indole ring, and a benzoselenophene ring. Indene rings are also examples of fused rings. Among the aryl ring or heteroaryl ring in the B ring and the C ring, a benzene ring, a naphthalene ring, a benzofuran ring, a benzothiophene ring, an indole ring, an indene ring, or a benzoselenophene ring is each independently preferred, a benzene ring, a benzofuran ring, an indene ring, or a benzothiophene ring is more preferred, and a benzene ring, a benzofuran ring, or a benzothiophene ring is even more preferred. In the substituted or unsubstituted aryl ring or substituted or unsubstituted heteroaryl ring in the A ring, B ring and C ring, the substituent in the case of "substituted or unsubstituted" may include, for example, one or more substituents selected from the substituent group Zα. In addition, the substituent may be a substituted or unsubstituted diarylphosphino such as diphenylphosphino. When there are multiple substituents, the multiple substituents may be the same or different from each other. As the substituent, substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted diarylamino, substituted or unsubstituted arylheteroarylamino or substituted silyl is preferable, and substituted or unsubstituted methyl, substituted or unsubstituted t-butyl, substituted or unsubstituted adamantyl, substituted or unsubstituted phenyl, substituted or unsubstituted diphenylamino, substituted or unsubstituted phenylbenzofuranylamino, substituted or unsubstituted carbazolyl or triphenylsilyl is more preferable. For other preferable substituents, reference can be made to the description in <Preferred Substituents> described below. <Ar 1 and Ar 2 > In equation (1), Ar 1 and Ar 2 are each independently hydrogen, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted alkyl, or substituted or unsubstituted cycloalkyl, provided that Ar 1 and Ar 2 One or more of these are independently monovalent groups represented by the formula (Ar). In the formula (Ar), * indicates the bonding position with the nitrogen atom. Among the formulas (Ar), R g1 and R g2are each independently hydrogen or a substituent. The substituent is preferably a group selected from the substituent group Zα, more preferably a substituted or unsubstituted alkyl, a substituted or unsubstituted cycloalkyl, a substituted or unsubstituted aryl (such as phenyl which may be substituted with methyl, t-butyl, t-amyl, adamantyl, or dimethyladamantyl), or a substituted or unsubstituted heteroaryl (such as dibenzothienyl, dibenzofuranyl, or carbazolyl in which the nitrogen atom may be substituted with a substituted or unsubstituted aryl, all of which may be substituted with methyl, t-butyl, t-amyl, adamantyl, or dimethyladamantyl), more preferably an alkyl or a cycloalkyl which may be substituted with an alkyl, and particularly preferably a methyl, t-butyl, t-amyl, adamantyl, or dimethyladamantyl. In formula (Ar), R g1 and R g2 It is desirable that all of them are hydrogen. A, R g1 and R g2 Two adjacent ones can be combined to form a ring. A is hydrogen, deuterium, or a substituent. The substituent is preferably a substituted or unsubstituted alkyl, a substituted or unsubstituted aryl, a substituted or unsubstituted heteroaryl, or a substituted or unsubstituted cycloalkyl. Specific examples of the substituted or unsubstituted aryl or substituted or unsubstituted heteroaryl include aryl in which at least one hydrogen is substituted with a substituted or unsubstituted cycloalkyl, or aryl or heteroaryl condensed with a cycloalkane. By using such a group as A, an excellent organic EL material, particularly a dopant compound, can be provided. This is because the cyclic alkyl structure suppresses intermolecular interactions, thereby improving luminous efficiency. When the A ring is a substituted or unsubstituted cycloalkyl, heat resistance is further improved, and when A is a substituted or unsubstituted aryl condensed with a cycloalkane, the sublimation temperature is lowered, making processes such as sublimation purification and deposition easier. As for the substituted or unsubstituted alkyl group A, it is preferable that it be a group represented by the formula (tR) described below. As the substituted or unsubstituted cycloalkyl A, substituted or unsubstituted cyclohexyl or substituted or unsubstituted adamantyl is preferred, and adamantyl in which one or more hydrogens may be replaced with methyl is more preferred. As the substituted or unsubstituted aryl of A, substituted or unsubstituted phenyl or substituted or unsubstituted naphthyl is preferred, and as the substituted or unsubstituted heteroaryl of A, substituted or unsubstituted dibenzofuranyl is preferred. Among the aryls in which at least one hydrogen is substituted with a substituted or unsubstituted cycloalkyl, the substituted or unsubstituted cycloalkyl is preferably a substituted or unsubstituted adamantyl, and more preferably adamantyl in which one or more hydrogens are substituted with methyl. The aryl is preferably phenyl. The substitution position of the substituted or unsubstituted cycloalkyl in phenyl is preferably the para position. The aryl may have a substituent other than a substituted or unsubstituted cycloalkyl, and in this case, examples of the substituent include alkyl such as methyl or t-butyl. The substituted or unsubstituted aryl of the substituted or unsubstituted aryl condensed with A cycloalkane is more preferably phenyl, biphenyl, or terphenyl, which may be substituted with alkyl, and is even more preferably phenyl, and is also preferably unsubstituted (in this case, with respect to the phrase “substituted or unsubstituted”, cycloalkane condensation is not considered as “substitution”). In addition, the alkyl is preferably methyl or t-butyl, but a form in which one or more hydrogens (preferably all hydrogens) are replaced with deuterium is also preferred. The substituted or unsubstituted heteroaryl of the substituted or unsubstituted heteroaryl condensed with A cycloalkane is preferably substituted or unsubstituted carbazole. In any case, in the form of cycloalkane condensation, a structure in which a partial structure represented by the formula (B11) or formula (B12) described below is bonded to an adjacent carbon atom in an aryl ring or heteroaryl ring is preferred. As for A, it is more preferable that it is a group in which a partial structure represented by the formula (B11) or formula (B12) described below is bonded to an adjacent carbon atom in the benzene ring of an unsubstituted phenyl, or a group in which a partial structure represented by the formula (B11) or formula (B12) described below is bonded to an adjacent carbon atom in the benzene ring of any one of substituted or unsubstituted biphenylyl, and it is particularly preferable that it is a group in which a partial structure represented by the formula (B11) or formula (B12) described below is bonded to an adjacent carbon atom in the benzene ring of an unsubstituted phenyl. A more preferable form of A may include one selected from the group consisting of groups represented by the following formulas (A-1) to (A-37). In the formulas below, # represents a bonding position with a carbon atom of the formula (Ar). Among the above formulas (A-1) to (A-37), One or more hydrogens of each ring may be independently substituted with deuterium, a substituted or unsubstituted alkyl, a substituted or unsubstituted alkenyl, a substituted or unsubstituted cycloalkyl, or a substituted silyl. Preferably, the substituted or unsubstituted alkyl is substituted or unsubstituted methyl or substituted or unsubstituted t-butyl, the substituted or unsubstituted alkenyl is preferably substituted or unsubstituted vinyl, and the substituted silyl is preferably trimethylsilyl or triphenylsilyl. In addition, two adjacent substituted or unsubstituted alkenyls of each ring may combine with each other to form a substituted or unsubstituted aryl ring or a substituted or unsubstituted heteroaryl ring together with the ring. For example, two adjacent substituted vinyls of a benzene ring may combine with each other to form a naphthalene ring together with the benzene ring. One or more hydrogens of each ring may be independently substituted with cycloalkyl, which may be substituted with alkyl or methyl, but is preferably methyl, a group represented by the formula (tR) described below (preferably t-butyl or t-amyl), adamantyl, or dimethyladamantyl. Z is >O, >NR NX , >C(-R CX )2, >Si(-R IX )2, >S or >Se, and R NX , R CX and R IX are each independently hydrogen, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted alkyl, or substituted or unsubstituted cycloalkyl, and two R CX can be combined with each other to form a ring, and two RIX can be combined with each other to form a ring. R NX Substituted or unsubstituted aryl is preferred, and phenyl, which may be substituted with alkyl, is more preferred. R CX Methyl or phenyl is preferred. R IX Methyl or phenyl is preferred. Z is preferably >O, >C(-CH3)2, or >S, more preferably >O or >S, and even more preferably >O. In addition, among the groups represented by formulas (A-1) to (A-37), it is preferable that A is formula (A-1), formula (A-2), formula (A-3), formula (A-4), formula (A-7), formula (A-8), formula (A-13), formula (A-14), formula (A-17), formula (A-18), or formula (A-33). In addition, it is also preferable that A is formula (A-17), formula (A-18), formula (A-30), formula (A-31), formula (A-32), formula (A-33), formula (A-34), formula (A-35), formula (A-36), or formula (A-37). And, it is more preferable that it is formula (A-17), formula (A-18), formula (A-30), formula (A-32), formula (A-33), formula (A-34), formula (A-35), formula (A-36) or formula (A-37). In formulas (A-1) to (A-37), at least one hydrogen is preferably substituted with deuterium, as are the groups represented by each formula above. For example, a structure in which all hydrogens directly bonded to some or all of the benzene rings are substituted with deuterium, or a structure in which all hydrogens of the alkyl ring are substituted with deuterium, may be mentioned. B 1 and B 2 are each independently alkyl in which one or more hydrogens are replaced by deuterium. B 1 and B 2 It is preferable that all hydrogens are deuterated methyl (CD3 group, hereinafter also referred to as D-methyl). B 1 and B 2When the is alkyl (methyl), the molecular skeleton is fixed, which can achieve the desirable effect of narrowing the full width at half maximum (FWHM). On the other hand, when the hydrogen of the alkyl is at the benzylic position, the CH bond at the benzylic position is more chemically reactive, so when the compound represented by formula (1) is used as a dopant for an organic electroluminescent device, durability may be an issue, resulting in a shortened lifespan of the device. Accordingly, this drawback can be overcome by replacing the hydrogen of the alkyl with deuterium (D), which has higher durability. This explanation can be similarly applied to the case where the hydrogen atoms at other positions of the compound represented by formula (1) are deuterated. A more preferable form of formula (Ar) includes a group represented by the following formula (Ar-1). In the formulas below, * indicates a bonding position with the nitrogen atom of formula (1). As for A, reference may be made to the description in this specification, but preferably, it is a monovalent group represented by the above formulas (A-1) to (A-37). More preferable forms of formula (Ar) include those represented by formula (Ar-2) or formula (Ar-3). * indicates a bonding position with the nitrogen atom in formula (1). The monovalent group represented by the formula (Ar) is a substituent with higher chemical stability, as the CH bond becomes a CD bond with a higher bond dissociation energy. 1 and B 2) has a structure that is twisted with respect to the condensed ring planar structure of the polycyclic aromatic compound including the structural unit represented by formula (1) because it has groups represented by formula (1) at ortho positions on both sides. As a result, a long device life can be obtained, and since the twisted partial structure covers the molecule, concentration quenching is suppressed, so that the luminescence efficiency is improved in an organic electroluminescent device using a polycyclic aromatic compound including the structural unit represented by formula (1). In addition, since the twisted structure is more firmly fixed by the ortho positions on both sides, the effect of narrowing the half width of the luminescence spectrum can also be obtained. Ar 1 and Ar 2 Each can be a univalent contribution represented by the formula (Ar) independently, or one can be a univalent contribution represented by the formula (Ar). From the perspective of device characteristics, Ar 1 and Ar 2 It is more preferable that all of them are monovalent groups represented by the formula (Ar). Ar 1 and Ar 2 In the case where both are monovalent groups represented by the formula (Ar), the two monovalent groups represented by the formula (Ar) may be the same or different. From the viewpoint of ease of synthesis, it is preferable that the two monovalent groups represented by the formula (Ar) be the same. Ar 1 and Ar 2When one of the groups is a monovalent group represented by the formula (Ar), the other is preferably a substituted or unsubstituted aryl or a substituted or unsubstituted heteroaryl, and is preferably a substituted or unsubstituted phenyl, a substituted or unsubstituted naphthyl, a substituted or unsubstituted biphenylyl, a substituted or unsubstituted terphenylyl, a substituted or unsubstituted quaterphenylyl, or a substituted or unsubstituted dibenzofuranyl, and is more preferably a substituted or unsubstituted phenyl, a substituted or unsubstituted biphenylyl, a substituted or unsubstituted terphenylyl, or a substituted or unsubstituted dibenzofuranyl, and is further preferably a substituted or unsubstituted phenyl, a substituted or unsubstituted biphenylyl, a substituted or unsubstituted terphenylyl, or a substituted or unsubstituted dibenzofuranyl, and is optionally substituted with alkyl or cycloalkyl, biphenylyl optionally substituted with alkyl or cycloalkyl, or phenyl optionally substituted with alkyl or cycloalkyl. 4-p-terphenylyl, 4'-m-terphenylyl which may be substituted with alkyl or cycloalkyl, or dibenzofuranyl (especially 4-dibenzofuranyl) which may be substituted with alkyl or cycloalkyl is particularly preferred. Ar which is not a monovalent group represented by the formula (Ar) 1 and Ar 2 In this case, it is also preferable that at least one selected from the group consisting of an aryl ring and a heteroaryl ring included in the structure is condensed with a cycloalkane as described below. The polycyclic aromatic compound of the present invention is a polycyclic aromatic compound having a structure composed of one or two or more structural units represented by formula (1). As a polycyclic aromatic compound having a structure composed of one of the above structural units, a polycyclic aromatic compound represented by formula (1) can be exemplified. As a polycyclic aromatic compound having a structure composed of two or more structural units represented by formula (1), a compound corresponding to a multimer of a polycyclic aromatic compound represented by the formula described above as a structural unit represented by formula (1) can be exemplified. The multimer is preferably a dimer to a hexamer, more preferably a dimer to a trimer, and particularly preferably a dimer. The multimer may have a plurality of the above structural units in one compound, and may be a form in which any ring (A ring, B ring, or C ring) included in the above structural unit is shared by a plurality of structural units and bonded together, or may be a form in which any ring (A ring, B ring, or C ring) included in the above structural unit is condensed and bonded together. In addition, the above structural unit may be a single bond, or a form in which multiple bonds are formed by connecting groups such as alkylene, phenylene, and naphthylene having 1 to 3 carbon atoms. Among these, a form in which the rings are shared is preferred. In a polycyclic aromatic compound having a structure composed of two or more structural units represented by formula (1), two or more structural units may be the same or different from each other. <Polycyclic aromatic compound having a structure composed of one or two or more structural units represented by Formula (1-A) or Formula (1-B)> Preferred examples of polycyclic aromatic compounds including a structural unit represented by formula (1) include polycyclic aromatic compounds having a structure composed of one or two or more structural units represented by formula (1-A) or formula (1-B). Among each of formulas (1-A) and (1-B), Ar 1 and Ar 2 Ar in equation (1)1 and Ar 2 are identical to each other, and the desirable range is also the same. Among each of equations (1-A) and (1-B), R 1 ~R 11 are each independently hydrogen or a substituent. Also, R 1 ~R 11 Among them, two adjacent ones on one benzene ring may be combined with each other to form a substituted or unsubstituted aryl ring or a substituted or unsubstituted heteroaryl ring together with the benzene ring. The two adjacent ones are R 8 and R 9 , R 9 and R 10 , R 10 and R 11 , and R 9 and R 10 This is preferable. The aryl ring or heteroaryl ring formed here includes a naphthalene ring, anthracene ring, quinoline ring, fluorene ring, benzofluorene ring, benzofuran ring, benzothiophene ring, indole ring, dibenzofuran ring, dibenzothiophene ring, carbazole ring, benzoselenophene ring, and dibenzoselenophene ring. R 1 ~R 11 As a substituent in the case of this substituent or a substituent for an aryl ring or heteroaryl ring formed as described above, one or more substituents selected from the substituent group Zα may be mentioned, and one or more substituents selected from the substituent group Z are preferable, and substituted or unsubstituted alkyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted diarylamino, substituted or unsubstituted arylheteroarylamino, or substituted silyl is more preferable, and t-butyl is even more preferable. Reference may also be made to examples of preferable substituents described below. In each of Equations (1-A) and (1-B), R 1 ~R 3Among them, it is preferable that one is a substituent and the others are hydrogen, or all are hydrogen. If one is a substituent, R 2 It is preferable that R is a substituent. 1 ~R 3 Among them, when one of the substituents is a substituent, the substituent is preferably a substituted or unsubstituted alkyl, a substituted or unsubstituted cycloalkyl, a substituted or unsubstituted aryl, a substituted or unsubstituted heteroaryl, a substituted or unsubstituted diarylamino, a substituted or unsubstituted heteroaryl, a substituted or unsubstituted diarylamino, a substituted or unsubstituted arylheteroarylamino, or a substituted silyl. In addition, particularly in formula (1-B), R 2 It is preferably a substituted or unsubstituted aryl, a substituted or unsubstituted heteroaryl, or a substituted silyl, and it is more preferably a substituted or unsubstituted aryl. As for the alkyl, it is preferably methyl, t-butyl, or t-amyl. As for the cycloalkyl, it is more preferably adamantyl in which one or more hydrogens may be replaced by methyl. As for the aryl, it is preferably methyl, t-butyl, t-amyl, phenyl, biphenyl, naphthyl, or terphenyl which may be substituted with adamantyl in which one or more hydrogens may be replaced by methyl, more preferably phenyl, biphenyl, naphthyl, or terphenyl, and particularly preferably phenyl. As for the heteroaryl, it is preferably methyl, t-butyl, t-amyl, adamantyl which may be substituted with methyl, or carbazolyl which may be substituted with phenyl (which may be substituted with methyl, t-butyl, t-amyl, or adamantyl which may be substituted with methyl). It is preferable that the carbazolyl is N-carbazolyl (9-carbazolyl). As the above diarylamino, diphenylamino, phenylnaphthylamino, or phenylbiphenylamino are preferable, and all of these may be substituted with methyl, t-butyl, t-amyl, or adamantyl, which may be substituted with methyl. As the above arylheteroarylamino, phenyldibenzofuranylamino or biphenyldibenzofuranylamino are preferable, and all of these may be substituted with methyl, t-butyl, t-amyl, or adamantyl, which may be substituted with one or more hydrogens of methyl. The substituted silyl is preferably trialkylsilyl (each alkyl is independently methyl, ethyl, isopropyl, normal butyl, or t-butyl, and more preferably all are methyl), or triphenylsilyl (each phenyl may be independently substituted with methyl, t-butyl, t-amyl, or adamantyl, which may be substituted with methyl, but it is more preferably all phenyls are unsubstituted). In each of equations (1-A) and (1-B), R 1 ~R 3In the case where one of the substituents is a substituent, a bulky substituent is preferable in order to suppress concentration quenching and improve the luminescence quantum yield. Bulky substituents include tertiary-alkyl (preferably t-butyl or t-amyl) and adamantyl in which one or more hydrogens are substituted with methyl. Alternatively, a group substituted with these groups (e.g., aryl, heteroaryl, diarylamino, or arylheteroarylamino) is also preferable for the same reason. Substituted silyl is also preferable for the same reason. In addition to the viewpoint of improving the luminescence quantum efficiency, in particular, from the viewpoint of improving the molecular orientation, R in formula (1-B) 1 ~R 3 As a substituent in case where either of them is a substituent, a substituted or unsubstituted aryl or a substituted or unsubstituted heteroaryl is also preferable. R 1 ~R 3 If either of them is a substituent, R 2 It is preferable that it is a substituent. R in Equation (1-A) 4 ~R 7 and R 8 ~R 11 and R of equation (1-B) 8 ~R 11 In R 5 , R 6 , R 9 or R 10 Each of these is independently hydrogen or a substituent, and it is also preferable that each of the others is hydrogen, and R 5 or R 6 and R 9 or R 10 It is more preferable that this substituent and the others are each hydrogen. R 6 and R 9 Each independently represents hydrogen, alkyl, or substituted or unsubstituted cycloalkyl. Preferably, t-butyl or t-amyl is used as the alkyl, and preferably, adamantyl is used as the cycloalkyl, wherein one or more hydrogens may be replaced with methyl. R 5and R 10 It is preferred that each independently be hydrogen, alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted diarylamino, substituted or unsubstituted arylheteroarylamino, or substituted or unsubstituted diheteroarylamino. As the alkyl, methyl, t-butyl, or t-amyl is preferred. As the cycloalkyl, adamantyl is preferred, wherein one or more hydrogens may be replaced by methyl. As the aryl, phenyl, biphenyl, naphthyl, or terphenyl is more preferred, phenyl, biphenyl, naphthyl, or terphenyl is preferred, and phenyl is more preferred, and all of these may be substituted with adamantyl, which may be substituted with methyl, t-butyl, t-amyl, or methyl. As the heteroaryl, carbazolyl, dibenzofuranyl, or dibenzothiophenyl is preferable, and these may be substituted with methyl, t-butyl, t-amyl, adamantyl which may be substituted with methyl, or phenyl (which may be substituted with adamantyl which may be substituted with methyl, t-butyl, t-amyl, or methyl). As the diarylamino, diphenylamino, phenylnaphthylamino, or phenylbiphenylamino is preferable, and these may all be substituted with adamantyl which may be substituted with methyl, t-butyl, t-amyl, or methyl. As the arylheteroarylamino, phenyldibenzofuranylamino or biphenyldibenzofuranylamino is preferable, and these may all be substituted with adamantyl which may be substituted with methyl, t-butyl, t-amyl, or methyl. In addition, R 5 and R 10 It is preferred that at least one of them is independently a substituted or unsubstituted diarylamino, a substituted or unsubstituted arylheteroarylamino, or a substituted or unsubstituted diheteroarylamino. R 5 and R 6 , R 9 and R 10 , or two sets of each (R5 and R 6 , R 9 and R 10 It is also desirable that these) combine with each other to form a cycloalkene with the carbon atom to which they are bonded. This structure is R 4 ~R 7 This bonding ring or R 8 ~R 11 This combined ring corresponds to a structure condensed with a cycloalkane as described later, and as described later, further reduction in melting point or sublimation temperature can be expected. Among these, R 5 and R 6 , or R 9 and R 10 It is particularly preferable that these are combined with each other to form a partial structure represented by the formula (B11) or formula (B12) described below. R 5 , R 6 , R 9 or R 10 In this case, a bulky substituent is preferable as a substituent to suppress concentration quenching and improve the luminescence quantum yield. Bulky substituents include tertiary-alkyl (preferably t-butyl or t-amyl) and an adamantyl group in which one or more hydrogens are replaced with methyl. In addition, a group substituted with these groups (for example, aryl, heteroaryl, diarylamino or arylheteroarylamino) is also preferable for the same reason. In addition, R 5 and R 10 In addition to these groups, from the viewpoint of further increasing the luminescence quantum efficiency, substituted or unsubstituted diarylamino, substituted or unsubstituted arylheteroarylamino, or substituted or unsubstituted carbazolyl is preferable. In addition, it is also preferable that at least one hydrogen of the diarylamino and the arylheteroarylamino is substituted with substituted silyl, fluoroalkyl, or fluorine. R of Equation (1-B) 4 ~R 7 In R 5 or R6 These are each independently hydrogen or a substituent, and it is also preferable that the others are each hydrogen, and R 5 or R 6 This substituent is, and it is more preferable that the others are each hydrogen. R 5 or R 6 In this case, the substituent is preferably alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl. The alkyl is preferably methyl, t-butyl, or t-amyl. The cycloalkyl is preferably adamantyl which may be substituted with methyl. The aryl is preferably phenyl, biphenyl, naphthyl, or terphenyl, and among these, phenyl is more preferable, and all of these may be substituted with methyl, t-butyl, t-amyl, or adamantyl which may be substituted with methyl. The heteroaryl is preferably dibenzofuranyl, which may be substituted with methyl, t-butyl, t-amyl, or adamantyl which may be substituted with methyl, t-butyl, t-amyl, or methyl, or phenyl (which may be substituted with methyl, t-butyl, t-amyl, or adamantyl which may be substituted with methyl). Also, R 5 or R 6 It is preferable that the aryl ring (such as a benzene ring) in the middle is condensed with a cycloalkane. R 5 and R 6 It is also desirable that these are bonded to each other to form a cycloalkene with the carbon atom to which they are bonded. This structure is R 4 ~R 7 This combined ring corresponds to a structure condensed with a cycloalkane as described later, and as described later, further reduction in melting point or sublimation temperature can be expected. Among these, R 5 and R 6 It is particularly preferable that these are combined with each other to form a partial structure represented by the formula (B11) or formula (B12) described below. In equation (1-B), R 5 or R6 In this case, a bulky substituent is preferable as a substituent to suppress concentration quenching and improve the luminescence quantum yield. Bulky substituents include tertiary-alkyl (preferably t-butyl or t-amyl) and adamantyl substituted with methyl. In addition, R 5 and R 6 In addition to these groups, substituted or unsubstituted diarylamino, substituted or unsubstituted arylheteroarylamino, or substituted or unsubstituted carbazolyl are preferable from the viewpoint of further increasing luminescence quantum efficiency. Also, R in equation (1-B) 5 or R 6 In addition to the viewpoint of improving the luminescence quantum yield, it is also preferable to use a substituted or unsubstituted aryl or a substituted or unsubstituted heteroaryl from the viewpoint of improving the molecular orientation. In addition, R of formula (1-B) 10 It is preferably a substituted or unsubstituted diarylamino, a substituted or unsubstituted arylheteroarylamino, or a substituted or unsubstituted diheteroarylamino. In equation (1-B), X is >O, >NR NX , >C(-R CX )2, >Si(-R IX )2, >S or >Se, and R NX , R CX and R IX are each independently hydrogen, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted alkyl, or substituted or unsubstituted cycloalkyl, and two R CX They may be combined with each other to form a ring, and two R IX They may be combined with each other to form a ring. R NX As for R, substituted or unsubstituted aryl is preferred, and phenyl, which may be substituted with alkyl, is more preferred. CX Methyl or phenyl is preferred. R IXMethyl or phenyl is preferred. X is preferably >O, >C(-CH3)2 or >S, more preferably >O or >S, and most preferably >O. <Preferred substituents> In polycyclic aromatic compounds used as emitting dopants (in other compounds used as dopants), among the substituents containing “alkyl”, a tertiary-alkyl represented by the following formula (tR) is particularly preferable. This is because the luminescence quantum yield (PLQY) is improved as the intermolecular distance increases due to such a bulky substituent. In addition, a substituent in which the tertiary-alkyl represented by the formula (tR) is substituted for another substituent as a second substituent is also preferable. Specifically, examples thereof include a diarylamino substituted with a tertiary-alkyl represented by the formula (tR), a carbazolyl substituted with a tertiary-alkyl represented by the formula (tR) (preferably N-carbazolyl), or a benzocarbazolyl substituted with a tertiary-alkyl represented by the formula (tR) (preferably N-benzocarbazolyl). Examples of substitution forms of the group of formula (tR) with diarylamino, carbazolyl, and benzocarbazolyl include those in which some or all of the hydrogens of the aryl ring or benzene ring in these groups are replaced with a group represented by formula (tR). In the formula (tR), R a , R b and R c Is Each independently represents an alkyl having 1 to 24 carbon atoms. In addition, R a , R b and R c Is In each alkyl group having 1 to 24 carbon atoms, one or more non-adjacent -CH2- may be substituted with -O-, except for the terminal CH3. The group represented by the formula (tR) has * as the bonding position. R a , R band R c “C1-24 alkyl” may be either straight or branched chain, for example, straight chain alkyl having 1 to 24 carbon atoms or alkyl having 3 to 24 carbon atoms. Branched-chain alkyl, alkyl having 1 to 18 carbon atoms (branched-chain alkyl having 3 to 18 carbon atoms), alkyl having 1 to 12 carbon atoms (branched-chain alkyl having 3 to 12 carbon atoms), alkyl having 1 to 6 carbon atoms (branched-chain alkyl having 3 to 6 carbon atoms), alkyl having 1 to 4 carbon atoms (branched-chain alkyl having 3 to 4 carbon atoms) can be mentioned. R in equation (tR) a , R b and R c The total number of carbon atoms is 3 to 20. Preferably, those having 3 to 10 carbon atoms are particularly preferred. R a , R b and R c Specific alkyls include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, s-butyl, t-butyl, n-pentyl, isopentyl, neopentyl, t-pentyl, n-hexyl, 1-methylpentyl, 4-methyl-2-pentyl, 3,3-dimethylbutyl, 2-ethylbutyl, n-heptyl, 1-methylhexyl, n-octyl, t-octyl, 1-methylheptyl, 2-ethylhexyl, 2-propylpentyl, n-nonyl, 2,2-dimethylheptyl, 2,6-dimethyl-4-heptyl, 3,5,5-trimethylhexyl, n-decyl, n-undecyl, 1-methyldecyl, n-dodecyl, n-tridecyl, 1-hexylheptyl, n-tetradecyl, n-pentadecyl, Examples include n-hexadecyl, n-heptadecyl, n-octadecyl, and n-eicosyl. Groups represented by the formula (tR) include, for example, t-butyl, t-amyl, 1-ethyl-1-methylpropyl, 1,1-diethylpropyl, 1,1-dimethylbutyl, 1-ethyl-1-methylbutyl, 1,1,3,3-tetramethylbutyl, 1,1,4-trimethylpentyl, 1,1,2-trimethylpropyl, 1,1-dimethyloctyl, 1,1-dimethylpentyl, 1,1-dimethylheptyl, 1,1,5-trimethylhexyl, 1-ethyl-1-methylhexyl, 1-ethyl-1,3-dimethylbutyl, 1,1,2,2-tetramethylpropyl, 1-butyl-1-methylpentyl, 1,1-diethylbutyl, 1-ethyl-1-methylpentyl, 1,1,3-trimethylbutyl, 1-propyl-1-methylpentyl, Examples include 1,1,2-trimethylpropyl, 1-ethyl-1,2,2-trimethylpropyl, 1-propyl-1-methylbutyl, and 1,1-dimethylhexyl. Among these, t-butyl and t-amyl are preferred. As a substituent, a substituent represented by formula (A30) is also preferable. The emission wavelength can be adjusted by the steric hindrance, electron donating property, and electron withdrawing property of the substituent structure of the compound used as a dopant (assisting dopant or emitting dopant). Preferably, it is a group represented by the structural formula below, more preferably, it is methyl, t-butyl, t-amyl, t-octyl, neopentyl, adamantyl, phenyl, o-tryl, p-tryl, 2,4-xylyl, 2,5-xylyl, 2,6-xylyl, 2,4,6-mesityl, diphenylamino, di-p-trylamino, bis(p-(t-butyl)phenyl)amino, carbazolyl, 3,6-dimethylcarbazolyl, 3,6-di-t-butylcarbazolyl and phenoxy, and even more preferably, it is methyl, t-butyl, t-amyl, t-octyl, neopentyl, adamantyl, phenyl, o-tryl, 2,6-xylyl, 2,4,6-mesityl, diphenylamino, di-p-trylamino, Bis(p-(t-butyl)phenyl)amino, carbazolyl, 3,6-dimethylcarbazolyl, 3,6-di-t-butylcarbazolyl and tribenzazepinyl. From the viewpoint of ease of synthesis, those with greater steric hindrance are preferable for selective synthesis, and specifically, t-butyl, t-amyl, t-octyl, adamantyl, o-tryl, p-tryl, 2,4-xylyl, 2,5-xylyl, 2,6-xylyl, 2,4,6-mesityl, di-p-trylamino, bis(p-(t-butyl)phenyl)amino, 3,6-dimethylcarbazolyl and 3,6-di-t-butylcarbazolyl are preferable. In the structural formula below, * indicates a bonding position. The polycyclic aromatic compound having a structure composed of one or more structural units represented by formula (1) is preferably a structure containing one or more tertiary-alkyls (such as t-butyl or t-amyl), neopentyl or adamantyls represented by the aforementioned formula (tR), and preferably contains tertiary-alkyls (such as t-butyl or t-amyl) represented by formula (tR). This is because the luminescence quantum yield (PLQY) is improved as the intermolecular distance increases due to such bulky substituents. In addition, diarylamino is also preferable as the substituent. In addition, diarylamino substituted with a group represented by formula (tR), carbazolyl substituted with a group represented by formula (tR) (preferably N-carbazolyl) or benzocarbazolyl substituted with a group represented by formula (tR) (preferably N-benzocarbazolyl) are also preferable. Examples of substitution forms of the group of formula (tR) with diarylamino, carbazolyl, and benzocarbazolyl include those in which some or all of the hydrogens of the aryl ring or benzene ring in these groups are replaced with the group of formula (tR). Among the structures composed of one or two or more structural units represented by formula (1), the substituent of the aryl ring or heteroaryl ring may be a substituent represented by the following formula (A20). The substituent represented by formula (A20) is bonded to two adjacent atoms on the ring of the aryl ring or heteroaryl ring in two *, respectively. In formula (A20), L is >NR, >O, >Si(-R)2 or >S, and R of the >NR is substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted alkyl or substituted or unsubstituted cycloalkyl, and R of the >Si(-R)2 is hydrogen, optionally substituted aryl, optionally substituted alkyl or optionally substituted cycloalkyl, and two R may be bonded to each other to form a ring, and further, at least one of the >NR and the R of the >Si(-R)2 is a linking group. Or it may be bonded to the aryl ring or heteroaryl ring by a single bond, r is an integer from 1 to 4, R A Is Each independently hydrogen, substituted or unsubstituted alkyl, or substituted or unsubstituted cycloalkyl, and any R A is any other R A They may be connected to each other by a connector or a single bond. Examples of the above substituents include substituents represented by any one of the following. In each formula, *, it is sufficient that each is bonded to two or three atoms that are consecutive (adjacent) on the ring of any one aryl ring or heteroaryl ring. Cycloalkane condensation Among the polycyclic aromatic compounds having a structure composed of one or more of the structural units represented by formula (1), at least one selected from the group consisting of an aryl ring and a heteroaryl ring may be condensed with one or more cycloalkanes. The same applies to polycyclic aromatic compounds having a structure composed of one or more of the structural units represented by formula (1-A) or formula (1-B), and the following description also applies equally to polycyclic aromatic compounds having a structure composed of one or more of the structural units represented by formula (1-A) or formula (1-B). As a cycloalkane, a cycloalkane having 3 to 24 carbon atoms is sufficient. At least one hydrogen in the cycloalkane may be substituted with an aryl having 6 to 30 carbon atoms, a heteroaryl having 2 to 30 carbon atoms, an alkyl having 1 to 24 carbon atoms, or a cycloalkyl having 3 to 24 carbon atoms, and at least one -CH2- in the cycloalkane is It can also be replaced with -O-. The cycloalkane is a cycloalkane having 3 to 20 carbon atoms, and it is preferably a cycloalkane in which at least one hydrogen of the cycloalkane is substituted with an aryl having 6 to 16 carbon atoms, a heteroaryl having 2 to 22 carbon atoms, an alkyl having 1 to 12 carbon atoms, or a cycloalkyl having 3 to 16 carbon atoms. Examples of “cycloalkanes” include cycloalkanes having 3 to 24 carbon atoms, cycloalkanes having 3 to 20 carbon atoms, cycloalkanes having 3 to 16 carbon atoms, cycloalkanes having 3 to 14 carbon atoms, cycloalkanes having 5 to 10 carbon atoms, cycloalkanes having 5 to 8 carbon atoms, cycloalkanes having 5 to 6 carbon atoms, and cycloalkanes having 5 carbon atoms. Specific cycloalkanes include, for example, cyclopropane, cyclobutane, cyclopentane, cyclohexane, cycloheptane, cyclooctane, cyclononane, cyclodecane, norbornane (bicyclo[2.2.1]heptane), bicyclo[1.1.0]butane, bicyclo[1.1.1]pentane, bicyclo[2.1.0]pentane, bicyclo[2.1.1]hexane, bicyclo[3.1.0]hexane, bicyclo[2.2.2]octane, adamantane, diamantane, decahydronaphthalene, and decahydroazulene, and alkyl (especially methyl) substituents, halogen (especially fluorine) substituents, and deuterium substituents of these having 1 to 5 carbon atoms. Among the above examples, for example, a structure having at least one substituent on the carbon atom at the α-position of a cycloalkane (in a cycloalkane condensed with an aryl ring or a heteroaryl ring, the carbon atom at the position adjacent to the carbon at the condensation site) as shown in the structural formula below is preferable, a structure having two substituents on the carbon atom at the α-position is more preferable, and a structure in which both carbon atoms at the α-positions have two substituents (a total of four substituents) is even more preferable. Examples of the substituents include alkyl having 1 to 5 carbon atoms (particularly methyl), halogen (particularly fluorine), and deuterium. In particular, a structure in which a partial structure represented by the following formula (B1) or the following formula (B12) is bonded to an adjacent carbon atom in an aryl ring or a heteroaryl ring is preferable, and a structure in which a partial structure represented by the following formula (B11) is bonded is more preferable. In formula (B11) and formula (B12), * indicates a bonding position. The number of cycloalkanes condensed onto one aryl ring or heteroaryl ring is preferably 1 to 3, more preferably 1 or 2, and even more preferably 1. For example, an example in which one or more cycloalkanes are condensed onto one benzene ring (phenyl) is shown below. * indicates a bonding position, and that position may be any of the carbons that constitute the benzene ring and do not constitute the cycloalkane. The condensed cycloalkanes may be condensed with each other as in the formulas (Cy-1-4) and (Cy-2-4). The same applies even when the ring (group) to be condensed is an aryl ring or heteroaryl ring other than the benzene ring (phenyl), and even when the condensed cycloalkane is a cycloalkane other than cyclopentane or cyclohexane. At least one -CH2- among the cycloalkanes is -O- may be substituted. For example, examples of cycloalkanes condensed on one benzene ring (phenyl) in which one or more -CH2- are substituted with -O- are shown below. The same applies even when the ring (group) to be condensed is an aryl ring or heteroaryl ring other than a benzene ring (phenyl), or when the cycloalkanes to be condensed are other cycloalkanes other than cyclopentane or cyclohexane. Cycloalkane may be substituted with one or more substituents, and the substituents include any one substituent selected from substituent group Z. Among these substituents, alkyl (e.g., alkyl having 1 to 6 carbon atoms) and cycloalkyl (e.g., cycloalkyl having 3 to 14 carbon atoms) are preferable. Furthermore, it is also preferable that any one hydrogen is replaced with halogen (e.g., fluorine) or deuterium. Furthermore, when cycloalkyl is substituted, it may be a substituted form that forms a spiro structure, and for example, an example in which a spiro structure is formed in a cycloalkane condensed with one benzene ring (phenyl) is shown below. In each structural formula, * means a benzene ring included in the skeletal structure of the compound in the case of a benzene ring, and means a bond substituted in the skeletal structure of the compound in the case of phenyl. In the form of cycloalkane condensation, first, in a polycyclic aromatic compound having a structure composed of one or two or more structural units represented by formula (1), an aryl ring or heteroaryl ring in the A ring, B ring or C ring is condensed with a cycloalkane, Ar 1 and Ar 2 Examples thereof include a form in which an aryl ring or heteroaryl ring is condensed with a cycloalkane, and a form in which an aryl ring or heteroaryl ring is condensed with a cycloalkane when any one of the other substituents is a group including an aryl ring or heteroaryl ring. In addition, by introducing a cycloalkane structure into a polycyclic aromatic compound having a structure composed of one or two or more structural units represented by formula (1), a further decrease in the melting point or sublimation temperature can be expected. This means that in sublimation purification, which is almost indispensable as a purification method for materials for organic devices such as organic EL devices requiring high purity, purification can be performed at a relatively low temperature, thereby avoiding thermal decomposition of the material, etc. In addition, this also applies to the vacuum deposition process, which is a powerful means for manufacturing organic devices such as organic EL devices, and since the process can be performed at a relatively low temperature, thermal decomposition of the material can be avoided, resulting in a high-performance organic device. In addition, since the introduction of a cycloalkane structure improves solubility in organic solvents, it becomes possible to apply it to manufacturing devices using a coating process. However, the present invention is not particularly limited to these principles. Substitution with heavy stable isotopes Each element in a polycyclic aromatic compound including a structural unit represented by formula (1) includes multiple naturally occurring isotopes in their natural abundance ratios, unless otherwise specified. However, all or part of the elements in each structural formula may include a heavy stable isotope exceeding the natural abundance ratio. In this specification, this is simply referred to as “substituted” with a “heavy stable isotope.” More specifically, one or more hydrogens may be replaced with deuterium, and one or more nitrogens may be replaced with nitrogen-15( 15 N) can be substituted, and one or more sulfurs are sulfur-33( 33 S), Hwang-34( 34 S) or Hwang-36( 36 S) can be substituted for oxygen-17( 17 O) or oxygen-18( 18 O) can be substituted, and one or more carbons are carbon-13( 13C) can be substituted with one or more borons, and boron-11( 11 B) can be substituted. The same applies to structures consisting of one or more of the structural units represented by formula (1-A) or formula (1-B), and this explanation also applies to polycyclic aromatic compounds having structures consisting of one or more of the structural units represented by formula (1-A) or formula (1-B). By replacing at least some of the elements with heavy stable isotopes, in particular, one or more borons can be replaced with boron-11( 11 By substituting with B), it is possible to extend the life of an organic electroluminescent device using a polycyclic aromatic compound containing a structural unit represented by formula (1) as a dopant. The abundance ratio of each isotope is, for example, boron-10( 10 In B), it is preferable that each is independently 70 atom% or more, more preferably 80 atom% or more, and even more preferably 90 atom% or more. Boron-11( 11 In B), it is preferable that each is independently 85 atom% or more, more preferable that it is 90 atom% or more, and even more preferable that it is 95 atom% or more. Substitution by deuterium In a polycyclic aromatic compound having a structure composed of one or more structural units represented by formula (1), all or part of the hydrogen may be deuterium. The same applies to a polycyclic aromatic compound having a structure composed of one or more structural units represented by formula (1-A) or formula (1-B), and the following description also applies to a polycyclic aromatic compound having a structure composed of one or more structural units represented by formula (1-A) or formula (1-B). From the viewpoint of the lifespan and high efficiency of the device, it is more preferable that the hydrogen in the polycyclic aromatic compound is replaced with deuterium. The deuteration rate of each hydrogen atom in the polycyclic aromatic compound is preferably independently 50% or more, more preferably 60% or more, still more preferably 70% or more, still more preferably 80% or more, still more preferably 90% or more, and still more preferably 95% or more. In addition, in cases where it is difficult to specify the deuteration rate of individual hydrogen atoms among substituents such as CD3, the deuteration rate of the entire group may be calculated, and the preferred range of the deuteration rate may be referred to the description described above. For example, in a polycyclic aromatic compound having a structure consisting of one or more structural units represented by formula (1), A ring, B ring, C ring, Ar 1 and Ar 2 Hydrogen in any one of them may be replaced with deuterium, but among these, a state in which all or part of the hydrogen is replaced with deuterium in aryl or heteroaryl is also mentioned. In addition, from the viewpoint of durability, it is also preferable that all or part of the hydrogen in a polycyclic aromatic compound having a structure composed of one or two or more structural units represented by formula (1) is deuterated. <Specific examples of polycyclic aromatic compounds> Specific examples of polycyclic aromatic compounds having a structure composed of one or more structural units represented by formula (1) include any of the compounds below. In the formula, Me represents methyl, tBu represents t-butyl, tAm represents t-amyl, and D represents deuterium. <Method for producing polycyclic aromatic compounds> A polycyclic aromatic compound having a structure composed of one or more structural units represented by formula (1) is basically a condensed ring including an A ring, a B ring, and a C ring, and a bonding group (N-Ar) 1 Ina N-Ar 2By combining with a group including a ring (a group including a boron), an intermediate can be manufactured (first reaction), and then, a final product can be manufactured (second reaction) by combining a condensed ring including an A ring, a B ring, and a C ring with a bonding group (a group including a boron). In the first reaction, for example, in the case of an etherification reaction, general reactions such as a nucleophilic substitution reaction and a Ullmann reaction can be used, and in the case of an amination reaction, general reactions such as a Buchwald-Hartwig reaction, a nucleophilic substitution reaction, and a Goldberg amination can be used. In addition, in the second reaction, a tandem hetero Friedel-Crafts reaction (a continuous aromatic armotic electrophilic substitution reaction, the same applies hereinafter) can be used. The target compound can be manufactured by using a raw material having a desired condensed ring somewhere in the reaction process, or by adding a process for condensing rings. [Manufacturing method via intermediate] The polycyclic aromatic compound of the present invention can be produced using a production method comprising the following steps. For each of the steps below, reference may be made to the description in International Publication No. 2015 / 102118. A reaction process for synthesizing the following intermediate from a halogenated precursor, and metallizing a halogen atom (Hal) in the following intermediate using an organic alkaline compound, and using a reagent selected from the group consisting of a halogenide of boron, an amino halide of boron (e.g., BCl3, BBr3 or BI3, etc.), an alkoxylate of boron and an aryloxylate of boron, to form a metal and Y 1The reaction process including the reaction process of exchanging (B, etc.) and the reaction process of combining the B ring and the C ring with boron by a continuous aromatic electron substitution reaction using a Bronsted base is described below. In the formula, the halogen atom (Hal) may be any of F, Cl, Br, and I, and may be the same or independently different, and may be appropriately selected considering the reactivity of the substrate. Metallizing reagents used in the halogen-metal exchange reaction in the schemes described so far include alkyl lithiums such as methyllithium, n-butyllithium, sec-butyllithium, and t-butyllithium, isopropylmagnesium chloride, isopropylmagnesium bromide, phenylmagnesium chloride, phenylmagnesium bromide, and lithium chloride complexes of isopropylmagnesium chloride, known as Turbo-Grignard reagents. In addition, as a metallization reagent used in the ortho metal exchange reaction in the scheme described so far, in addition to the above reagents, organic alkali compounds such as lithium diisopropylamide, lithium tetramethylpiperidide, lithium hexamethyldisilazide, potassium hexamethyldisilazide, lithium tetramethylpiperidinyl magnesium chloride / lithium chloride complex, and tri-n-butylmagnesium acid compounds can be mentioned. Furthermore, when alkyllithium is used as a metallizing reagent, additives that promote the reaction include N,N,N',N'-tetramethylethylenediamine, 1,4-diazabicyclo[2.2.2]octane, N,N-dimethylpropyleneurea, etc. Also, the Lewis acids used in the schemes described so far are AlCl3, AlBr3, AlF3, BF 3·Examples include OEt2, BCl3, BBr3, BI3, GaCl3, GaBr3, InCl3, InBr3, In(OTf)3, SnCl4, SnBr4, AgOTf, ScCl3, Sc(OTf)3, ZnCl2, ZnBr2, Zn(OTf)2, MgCl2, MgBr2, Mg(OTf)2, LiOTf, NaOTf, KOTf, Me3SiOTf, Cu(OTf)2, CuCl2, YCl3, Y(OTf)3, TiCl4, TiBr4, ZrCl4, ZrBr4, FeCl3, FeBr3, CoCl3, CoBr3, etc. In addition, those of these Lewis acids supported on solids can also be used in the same way. In addition, Bronsted acids used in the schemes described so far include p-toluenesulfonic acid, methanesulfonic acid, trifluoromethanesulfonic acid, fluorosulfonic acid, carboranoic acid, trifluoroacetic acid, (trifluoromethanesulfonyl)imide, tris(trifluoromethanesulfonyl)methane, hydrogen chloride, hydrogen bromide, hydrogen fluoride, etc. In addition, solid Bronsted acids include Amberlyst (trade name: Dow Chemical), Nafion (trade name: DuPont), zeolite, and Teika QUA (trade name: Teika Corporation). In addition, amines that can be added to the scheme described so far include diisopropylethylamine, triethylamine, tributylamine, 1,4-diazabicyclo[2.2.2]octane, N,N-dimethyl-p-toluidine, N,N-dimethylaniline, pyridine, 2,6-lutidine, 2,6-di-t-butylamine, etc. In addition, solvents used in the schemes described so far include o-dichlorobenzene, chlorobenzene, toluene, benzene, methylene chloride, chloroform, dichloroethylene, benzotrifluoride, decalin, cyclohexane, hexane, heptane, 1,2,4-trimethylbenzene, xylene, diphenyl ether, anisole, cyclopentyl methyl ether, tetrahydrofuran, dioxane, methyl-t-butyl ether, etc. Here, Y 1Although this B example is described, by appropriately changing the raw material, Y 1 Compounds of P, P=O, P=S, Al, Ga, As, Si-R or Ge-R can also be synthesized. In the above scheme, a Bronsted base or a Lewis acid may be used to promote the tandem hetero Friedel-Crafts reaction. However, Y 1 trifluoride, Y 1 Trichloride of Y 1 Tribromide of Y 1 Y, such as triiodide of 1 When using halides of , acids such as hydrogen fluoride, hydrogen chloride, hydrogen bromide, and hydrogen iodide are generated along with the progress of the aromatic electron substitution reaction, so the use of a Bronsted base that captures acids is effective. On the other hand, Y 1 Amino halides of Y 1 In the case of using an alkoxy compound, since amines and alcohols are produced as the aromatic electron substitution reaction progresses, in many cases there is no need to use a Bronsted base, but since the elimination ability of amino or alkoxy is low, the use of a Lewis acid that promotes the elimination is effective. In addition, the polycyclic aromatic compound of the present invention includes compounds in which at least some hydrogen is substituted with deuterium or compounds substituted with various substituents, and such compounds can be synthesized in the same manner as described above by using a raw material in which a desired position is deuterated or derivatized. <2. Organic Device> The polycyclic aromatic compound of the present invention can be used as a material for organic devices. Examples of organic devices include organic electroluminescent devices, organic field-effect transistors, and organic thin-film solar cells. The polycyclic aromatic compound according to the present invention can be used as a material for organic devices. Examples of the organic device include organic electroluminescent devices, organic field-effect transistors, and organic thin-film solar cells, but organic electroluminescent devices are preferred. The polycyclic aromatic compound according to the present invention is preferably an organic electroluminescent device material, more preferably a material for a light-emitting layer (light-emitting material), and most preferably a dopant material for a light-emitting layer. <2-1. Organic electroluminescent device> <2-1-1. Structure of organic electroluminescent device> Figure 1 is a schematic cross-sectional drawing showing an example of an organic EL element. The organic EL device (100) illustrated in FIG. 1 has a substrate (101), an anode (102) provided on the substrate (101), a hole injection layer (103) provided on the anode (102), a hole transport layer (104) provided on the hole injection layer (103), a light-emitting layer (105) provided on the hole transport layer (104), an electron transport layer (106) provided on the light-emitting layer (105), an electron injection layer (107) provided on the electron transport layer (106), and a cathode (108) provided on the electron injection layer (107). In addition, the organic EL element (100) may be manufactured in reverse order, for example, by having a structure including a substrate (101), a cathode (108) provided on the substrate (101), an electron injection layer (107) provided on the cathode (108), an electron transport layer (106) provided on the electron injection layer (107), a light-emitting layer (105) provided on the electron transport layer (106), a hole transport layer (104) provided on the light-emitting layer (105), a hole injection layer (103) provided on the hole transport layer (104), and an anode (102) provided on the hole injection layer (103). It is not necessary to have all of the above layers, and the minimum configuration unit is a configuration consisting of an anode (102), a light-emitting layer (105), and a cathode (108), and the hole injection layer (103), the hole transport layer (104), the electron transport layer (106), and the electron injection layer (107) are layers that are provided arbitrarily. In addition, each of the above layers may be formed as a single layer or as multiple layers. In the form of the layers constituting the organic EL device, in addition to the above-mentioned “substrate / anode / hole injection layer / hole transport layer / light emitting layer / electron transport layer / electron injection layer / cathode” configuration, there are also “substrate / anode / hole transport layer / light emitting layer / electron transport layer / electron injection layer / cathode”, “substrate / anode / hole injection layer / light emitting layer / electron transport layer / electron injection layer / cathode”, “substrate / anode / hole injection layer / hole transport layer / light emitting layer / electron injection layer / cathode”, “substrate / anode / hole injection layer / hole transport layer / light emitting layer / electron transport layer / cathode”, “substrate / anode / light emitting layer / electron transport layer / cathode”, “substrate / anode / hole transport layer / light emitting layer / electron injection layer / cathode”, It may also have the configuration form of “substrate / anode / hole injection layer / light-emitting layer / electron injection layer / cathode”, “substrate / anode / hole injection layer / light-emitting layer / electron transport layer / cathode”, “substrate / anode / light-emitting layer / electron transport layer / cathode”, “substrate / anode / light-emitting layer / electron injection layer / cathode”. <2-1-2. Light-emitting layer in organic electroluminescent devices> The polycyclic aromatic compound of the present invention is preferably used as a material for forming one or more organic layers in an organic electroluminescent device, and is more preferably used as a material for forming a light-emitting layer. The light-emitting layer (105) is a layer that emits light by recombination of holes injected from an anode (102) and electrons injected from a cathode (108) between electrodes to which an electric field is applied. The material for forming the light-emitting layer (105) may be any compound that is excited by the recombination of holes and electrons and emits light (a light-emitting compound), and is preferably a compound that can form a stable thin film shape and exhibits strong light-emitting (fluorescent) efficiency in a solid state. The polycyclic aromatic compound of the present invention can be used as a material for a light-emitting layer, a dopant material, or a host material, but is preferably used as a material for a light-emitting layer, and is more preferably used as a dopant material. In addition, as for dopants, there are examples of using an assisting dopant and an emitting dopant in combination, but in this specification, when simply described as “dopant,” it refers to an emitting dopant when an assisting dopant is not used. A polycyclic aromatic compound including a structural unit represented by formula (1) can be used as an emitting dopant for a TTF device that utilizes a phenomenon in which a singlet exciton is generated from multiple triplet excitons (triplet-triplet fusion (TTF)). In addition, a polycyclic aromatic compound containing a structural unit represented by formula (1) can be used as an emitting dopant in a TADF device as a "thermally activated delayed fluorescence". In a "thermally activated delayed fluorescence", by reducing the energy difference between the lowest excited singlet state and the lowest excited triplet state, the reverse intersystem crossing from the lowest excited triplet state, which normally has a low transition probability, to the lowest excited singlet state is efficiently induced, and luminescence (thermally activated delayed fluorescence, TADF) is expressed from the singlet. In normal fluorescence luminescence, 75% of triplet excitons generated by current excitation cannot be extracted as fluorescence because they pass through the thermal deactivation path. On the other hand, in TADF, all excitons can be utilized for fluorescence luminescence, so that a highly efficient organic EL device can be realized. The light-emitting layer may be formed of a single layer or multiple layers, and each layer is formed by light-emitting layer materials (host material, dopant material). The host material and the dopant material may be of one type or a combination of two or more. The dopant material may be contained in the entire host material or may be contained partially. As for the doping method, it can be formed by a co-deposition method with the host material, but it can also be mixed with the host material in advance and then simultaneously deposited. In the case of a combination of two or more dopants, specific examples of dopants to be combined with the compound of the present invention are shown below. From a durability perspective, it is also desirable that some or all of the hydrogen atoms in the dopant material be deuterated. The amount of host material to be used varies depending on the type of host material and can be determined based on the characteristics of the host material. The standard for the amount of host material to be used is preferably 50 to 99.999 mass% of the total mass of the material for the light-emitting layer, more preferably 80 to 99.95 mass%, and even more preferably 90 to 99.9 mass%. The amount of dopant material used varies depending on the type of dopant material and can be determined based on the characteristics of the dopant material. The standard amount of dopant material used is preferably 0.001 to 50 mass% of the total mass of the light-emitting layer material, more preferably 0.05 to 20 mass%, and even more preferably 0.1 to 10 mass%. The above range is preferable because, for example, concentration quenching can be prevented. Meanwhile, in organic EL devices using thermally activated delayed fluorescence dopant materials, it is preferable that the amount of dopant material used be low in terms of preventing concentration quenching, but it is preferable that the amount of dopant material used be high in terms of the efficiency of the thermally activated delayed fluorescence mechanism. Furthermore, in organic EL devices using thermally activated delayed fluorescence assist dopant materials, it is preferable that the amount of dopant material used be low in comparison with the amount of assist dopant material used, from the viewpoint of the efficiency of the thermally activated delayed fluorescence mechanism of the assist dopant material. The polycyclic aromatic compound of the present invention can be used as a dopant (also referred to as an emitting dopant) in organic EL devices using thermally activated delayed fluorescence assist dopant materials. In the case where an assist dopant material is used, the usage standards of the host material, assist dopant material, and dopant material are 40 to 99.999 mass%, 59 to 1 mass%, and 20 to 0.001 mass%, respectively, of the total material for the light-emitting layer, preferably 60 to 99.99 mass%, 39 to 5 mass%, and 10 to 0.01 mass%, respectively, and more preferably 70 to 99.95 mass%, 29 to 10 mass%, and 5 to 0.05 mass%, respectively. Host Material Host materials include condensed ring derivatives such as anthracene, pyrene, dibenzochrycene or fluorene, which have been previously known as luminescent materials; bistyryl derivatives such as bisstyrylanthracene derivatives or distyrylbenzene derivatives; tetraphenylbutadiene derivatives, cyclopentadiene derivatives, fluorene derivatives, benzofluorene derivatives, etc. Additionally, from a durability perspective, it is also desirable for some or all of the hydrogen atoms in the host material to be deuterated. Furthermore, it is also desirable to form a light-emitting layer by combining a host compound in which some or all of the hydrogen atoms are deuterated with a dopant compound in which some or all of the hydrogen atoms are deuterated. [Compound represented by any one of formulas (H1), (H2), and (H3)] As a host material, for example, a compound represented by any one of the following formulas (H1), (H2), and (H3) can be used. Among equations (H1), (H2) and (H3), L 1 is a single bond, or a divalent group containing at least arylene or heteroarylene. Specifically, L 1 is a single bond, or a divalent group formed by connecting arylene having 6 to 24 carbon atoms, heteroarylene having 2 to 24 carbon atoms, heteroarylenearylene having 6 to 24 carbon atoms, or aryleneheteroarylenearylene having 6 to 24 carbon atoms, or any two of these with -O-, -S-, -CH2-, -Si(-Arx)2- (Arx is aryl), or cycloalkylene. L 1 Among the arylenes, arylene having 6 to 16 carbon atoms is preferable, arylene having 6 to 12 carbon atoms is more preferable, and arylene having 6 to 10 carbon atoms is particularly preferable. Specifically, divalent groups such as a benzene ring, a biphenyl ring, a terphenyl ring, and a fluorene ring can be mentioned. L 1Among the heteroarylenes, heteroarylene having 2 to 24 carbon atoms is preferable, heteroarylene having 2 to 20 carbon atoms is more preferable, heteroarylene having 2 to 15 carbon atoms is even more preferable, and heteroarylene having 2 to 10 carbon atoms is particularly preferable, and specifically, a pyrrole ring, an oxazole ring, an isoxazole ring, a thiazole ring, an isothiazole ring, an imidazole ring, an oxadiazole ring (such as a furazan ring), a thiadiazole ring, a triazole ring, a tetrazole ring, a pyrazole ring, a pyridine ring, a pyrimidine ring, a pyridazine ring, a pyrazine ring, a triazine ring, an indole ring, an isoindole ring, a 1H-indazole ring, a benzoimidazole ring, a benzoxazole ring, a benzothiazole ring, a 1H-benzotriazole ring, a quinoline ring, an isoquinoline ring, Examples of divalent groups include cinnoline ring, quinazoline ring, quinoxaline ring, phthalazine ring, naphthyridine ring, purine ring, pteridine ring, carbazole ring, acridine ring, phenoxanthine ring, phenoxazine ring, phenothiazine ring, phenazine ring, indolizine ring, furan ring, benzofuran ring, isobenzofuran ring, dibenzofuran ring, thiophene ring, benzothiophene ring, dibenzothiophene ring, and thianthrene ring. In the compounds represented by each of the above formulas, one or more hydrogens may be substituted with one or more groups selected from the substituent group Z or deuterium, and may be substituted with, for example, alkyl having 1 to 6 carbon atoms, cyano, halogen, or deuterium. Preferred specific examples include compounds represented by any one of the structural formulae listed below. Furthermore, in the structural formulae listed below, one or more hydrogen atoms may be substituted with halogen, cyano, an alkyl group having 1 to 4 carbon atoms (e.g., methyl or t-butyl), phenyl, or naphthyl. (mCP) [Anthracene compound] As anthracene compounds as a host, examples thereof include a compound represented by formula (3-H) and a compound represented by formula (3-H2). X and Ar 4 are each independently hydrogen, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted diarylamino, optionally substituted diheteroarylamino, substituted or unsubstituted arylheteroarylamino, substituted or unsubstituted alkyl, optionally substituted cycloalkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkoxy, substituted or unsubstituted aryloxy, substituted or unsubstituted arylthio or substituted silyl, and all X and Ar 4 There is no case where both become hydrogen at the same time. One or more hydrogens in the compound represented by formula (3-H) may be substituted with halogen, cyano, deuterium, or substituted heteroaryl. In addition, the structure represented by formula (3-H) may be used as a unit structure to form a multimer (preferably a dimer). In this case, for example, a form in which the unit structures represented by formula (3-H) are bonded to each other through X can be exemplified, and this X can be a single bond, an arylene (such as phenylene, biphenylene, and naphthylene), and a heteroarylene (a group having a divalent bond, such as a pyridine ring, a dibenzofuran ring, a dibenzothiophene ring, a carbazole ring, a benzocarbazole ring, and a phenyl-substituted carbazole ring). The preferred form of the above anthracene compound is described below. In the structure below, the definitions of symbols are the same as those described above. In formula (3-H), X is each independently a group represented by formula (3-X1), formula (3-X2), or formula (3-X3), and the group represented by formula (3-X1), formula (3-X2), or formula (3-X3) is bonded to the anthracene ring of formula (3-H) at *. Preferably, there is no case where two Xs simultaneously become a group represented by formula (3-X3). More preferably, there is no case where two Xs simultaneously become a group represented by formula (3-X2). In addition, the structure represented by formula (3-H) may be used as a unit structure to form a multimer (preferably a dimer). In this case, for example, a form in which the unit structures represented by formula (3-H) are bonded to each other through X can be exemplified, and this X can be a single bond, an arylene (such as phenylene, biphenylene, and naphthylene), and a heteroarylene (a group having a divalent bond, such as a pyridine ring, a dibenzofuran ring, a dibenzothiophene ring, a carbazole ring, a benzocarbazole ring, and a phenyl-substituted carbazole ring). The naphthylene moieties of formulas (3-X1) and (3-X2) may be condensed into a single benzene ring. The condensed structure is as follows. Ar 1 and Ar 2 are each independently hydrogen, phenyl, biphenylyl, terphenylyl, quaterphenylyl, naphthyl, phenanthryl, fluorenyl, benzofluorenyl, chrysenyl, triphenylenyl, pyrenyl, or a group represented by formula (A) (including carbazolyl, benzocarbazolyl, and phenyl-substituted carbazolyl). In addition, Ar 1 or Ar 2 When the group represented by formula (A) is a group represented by formula (A), the group represented by formula (A) is bonded to the naphthalene ring in formula (3-X1) or formula (3-X2) at *. Ar 3is phenyl, biphenylyl, terphenylyl, quaterphenylyl, naphthyl, phenanthryl, fluorenyl, benzofluorenyl, chrysenyl, triphenylenyl, pyrenyl, or a group represented by formula (A) (including carbazolyl, benzocarbazolyl, and phenyl-substituted carbazolyl). In addition, Ar 3 In the case of a group represented by this formula (A), the group represented by the formula (A) is bonded to a single bond represented by a straight line in the formula (3-X3) at *. That is, the anthracene ring of the formula (3-H) and the group represented by the formula (A) are directly bonded. Also, Ar 3 It may have a substituent, Ar 3 One or more hydrogens among them may be further substituted with an alkyl having 1 to 4 carbon atoms, a cycloalkyl having 5 to 10 carbon atoms, phenyl, biphenylyl, terphenylyl, naphthyl, phenanthryl, fluorenyl, chrysenyl, triphenylenyl, pyrenyl, or a group represented by formula (A) (including carbazolyl and phenyl-substituted carbazolyl). In addition, Ar 3 If the substituent having this is a group represented by formula (A), the group represented by formula (A) is Ar in formula (3-X3) in * 3 is combined with Ar 4 Is Silyl, each independently substituted with hydrogen, phenyl, biphenylyl, terphenylyl, naphthyl, or alkyl having 1 to 4 carbon atoms (methyl, ethyl, t-butyl, etc.) and / or cycloalkyl having 5 to 10 carbon atoms. In addition, hydrogen in the chemical structure of the anthracene compound represented by formula (3-H) may be substituted with a group represented by formula (A). When substituted with a group represented by formula (A), the group represented by formula (A) substitutes with one or more hydrogens in the compound represented by formula (3-H) in the *. The group represented by formula (A) is one of the substituents that the anthracene compound represented by formula (3-H) can have. In formula (A), Y is -O-, -S-, >C(-R 29-1 )2 or >NR 29 And, R 21 ∼R 28 are each independently hydrogen, optionally substituted alkyl, optionally substituted cycloalkyl, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted alkoxy, optionally substituted aryloxy, optionally substituted arylthio, trialkylsilyl, tricycloalkylsilyl, dialkylcycloalkylsilyl, alkyldicycloalkylsilyl, optionally substituted amino, halogen, hydroxy or cyano, and R 21 ∼R 28 The adjacent groups may be combined with each other to form a hydrocarbon ring, an aryl ring, or a heteroaryl ring, and R 29 is hydrogen or aryl, which may be substituted. In formula (A), it is preferable that Y is -O-. ">NR as Y 29 "R in 29 is hydrogen or aryl, which may be substituted. ">C(-R as Y 29-1 )2" in R 29-1 are each independently hydrogen, alkyl or aryl which may be substituted. Also, two R 29-1 They may be combined with each other to form a hydrocarbon ring or an aryl ring. R 21 ∼R 28Adjacent groups may be combined with each other to form a hydrocarbon ring, an aryl ring or a heteroaryl ring. If a ring is not formed, the group is represented by the following formula (A-1), and if a ring is formed, for example, the groups represented by the following formulas (A-2) to (A-14) may be exemplified. In addition, in the group represented by any one of the formulas (A-1) to (A-14), at least one hydrogen may be substituted with alkyl, cycloalkyl, aryl, heteroaryl, alkoxy, aryloxy, arylthio, trialkylsilyl, tricycloalkylsilyl, dialkylcycloalkylsilyl, alkyldicycloalkylsilyl, diaryl (two aryls may be combined with each other via a linking group), substituted amino, diheteroaryl-substituted amino, arylheteroaryl-substituted amino, halogen, hydroxy or cyano. In formula (A), R 21 ~ 28 A ring formed by two adjacent groups bonded together is, for example, a cyclohexane ring if it is a hydrocarbon ring, and an aryl ring or heteroaryl ring is the aforementioned R 21 ∼R 28 In the case of "aryl" or "heteroaryl", the ring structure described above can be mentioned, and these rings are formed by condensing with one or two benzene rings in formula (A-1). The group represented by formula (A) is a group obtained by excluding one hydrogen at any position in formula (A), and * indicates that position. That is, the group represented by formula (A) may have any position as a bonding position. For example, any one of the two carbon atoms of the benzene ring in the structure of formula (A), R in the structure of formula (A) 21 ∼R 28 Any one of the ring atoms formed by the bonding of adjacent groups, or ">NR as Y in the structure of formula (A) 29 "R in 29 Either position, or ">NR 29 "N(R in29 (A-1) can be a group that directly bonds with a bonding hand. The same applies to groups represented by any one of formulas (A-1) to (A-14). As a group represented by formula (A), for example, a group represented by any one of formulas (A-1) to (A-14) is exemplified, a group represented by any one of formulas (A-1) to (A-5) and formulas (A-12) to (A-14) is preferred, a group represented by any one of formulas (A-1) to (A-4) is more preferred, a group represented by any one of formulas (A-1), (A-3) and (A-4) is still more preferred, and a group represented by formula (A-1) is particularly preferred. Examples of the groups represented by formula (A) include the groups below. Y and * in the formula have the same definitions as above. In the compound represented by formula (3-H), the group represented by formula (A) is a naphthalene ring in formula (3-X1) or formula (3-X2), a single bond in formula (3-X3), and Ar in formula (3-X3). 3 A form combined with either one is preferable. The group represented by formula (B) is one of the substituents that the anthracene compound represented by formula (3-H) can have. In equation (B), Y b is -O-, -S-, >C(-R 42 )2 or >NR 41 and R 31 ~R 40are each independently hydrogen, optionally substituted alkyl, optionally substituted cycloalkyl, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted alkoxy, optionally substituted aryloxy, optionally substituted arylthio, trialkylsilyl, tricycloalkylsilyl, dialkylcycloalkylsilyl, alkyldicycloalkylsilyl, optionally substituted amino, halogen, hydroxy or cyano, and R 31 ~R 40 The adjacent groups may be combined with each other to form a hydrocarbon ring, an aryl ring, or a heteroaryl ring, and R 41 is hydrogen or aryl, which may be substituted. Y in formula (B) b It is preferable that it be -O-. Y b As ">C(-R 42 )2" in R 42 are each independently hydrogen, alkyl or aryl which may be substituted. Also, two R 42 They may combine with each other to form a hydrocarbon ring or an aryl ring. In formula (B), R 31 ~R 40 As for the ring formed by combining two adjacent groups, if it is a hydrocarbon ring, an example is a cyclohexane ring, and as an aryl ring or heteroaryl ring, the above-mentioned R 31 ~R 40 In the present invention, a ring structure described as “aryl” or “heteroaryl” can be mentioned, and these rings are formed by condensation with one or two benzene rings in formula (A-1). The group represented by formula (B) is a group that can be obtained by excluding one hydrogen at any position of formula (B), and * indicates the corresponding position. In other words, the group represented by formula (B) can be bonded at any position. For example, any carbon atom on two benzene rings in the structure of formula (B), R in the structure of formula (B) 31 ~R40 One of the ring atoms formed by the bonding of adjacent groups, or Y in the structure of formula (B) b As ">NR 41 "In R 41 Either location or">NR 41 " In N(R 41 It can be a source that directly combines with this bond. The following groups can be cited as examples of groups represented by formula (B). Y in the formula b And * are the same definitions as above. Additionally, all or part of the hydrogen in the chemical structure of the anthracene compound represented by formula (3-H) may be deuterium. The anthracene compound as a host may be, for example, a compound represented by the following formula (3-H2). In formula (3-H2), Ar c is optionally substituted aryl or optionally substituted heteroaryl, and R c is hydrogen, alkyl or cycloalkyl, and Ar 11 , Ar 12 , Ar 13 , Ar 14 , Ar 15 , Ar 16 , Ar 17 and Ar 18are each independently hydrogen, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted diarylamino (two aryls may be bonded to each other via a linking group), optionally substituted diheteroarylamino (two heteroaryls may be bonded to each other via a linking group), optionally substituted arylheteroarylamino (aryl and heteroaryl may be bonded to each other via a linking group), optionally substituted alkyl, optionally substituted cycloalkyl, optionally substituted alkenyl, optionally substituted alkoxy, optionally substituted aryloxy, optionally substituted arylthio, or optionally substituted silyl, and at least one hydrogen in the compound represented by the formula (3-H2) may be substituted with halogen, cyano, or deuterium. As for “aryl which may be substituted”, it is also preferable to be a group represented by any one of the following formulae (3-H2-X1) to (3-H2-X8). In formulas (3-H2-X1) to (3-H2-X8), * indicates a bonding position. In formulas (3-H2-X1) to (3-H2-X3), Ar 21 , Ar 22 and Ar 23 are each independently hydrogen, phenyl, biphenylyl, terphenylyl, quaterphenylyl, naphthyl, phenanthryl, fluorenyl, benzofluorenyl, chrysenyl, triphenylenyl, pyrenyl, anthracenyl, or a group represented by formula (A). In addition, in the description of formula (3-H2), the group represented by formula (A) is the same as that described in the anthracene compound represented by formula (3-H). In formula (3-H2-X4)∼(3-H2-X8), Ar 24 , Ar 25 , Ar 26 , Ar 27 , Ar 28 , Ar 29 and Ar 30 silver Each independently represents hydrogen, phenyl, biphenylyl, terphenylyl, naphthyl, phenanthryl, fluorenyl, chrysenyl, triphenylenyl, pyrenyl, or a group represented by formula (A). In addition, in each of the groups represented by formulas (3-H2-X1) to (3-H2-X8), one or more hydrogens may be substituted with an alkyl group having 1 to 6 carbon atoms (preferably methyl or t-butyl). In addition, a preferred example of "aryl which may be substituted" includes terphenylyl (particularly m-terphenyl-5'-yl), which may be substituted with one or more substituents selected from the group consisting of phenyl, biphenylyl, terphenylyl, naphthyl, phenanthryl, fluorenyl, chrysenyl, triphenylenyl, pyrenyl, and groups represented by formula (A). Examples of "optionally substituted heteroaryl" include a group represented by formula (A). In addition, specific examples of "optionally substituted aryl" and "optionally substituted heteroaryl" include dibenzofuryl, naphthobenzofuryl, and phenyl-substituted dibenzofuryl. One or more hydrogen atoms in the compound represented by formula (3-H2) may be replaced by halogen, cyano, or deuterium. Examples of "halogen" in this case include fluorine, chlorine, bromine, and iodine. In particular, a compound represented by formula (3-H2) in which all hydrogen atoms are replaced by deuterium is preferred. In formula (3-H2), R c is hydrogen, alkyl or cycloalkyl, preferably hydrogen, methyl or t-butyl, more preferably hydrogen. In formula (3-H2), Ar 11 ∼Ar 18It is preferable that two or more of the anthracene ring be substituted aryl or substituted heteroaryl. That is, the anthracene compound represented by formula (3-H2) preferably has a structure in which three or more substituents selected from the group consisting of aryl or substituted heteroaryl are bonded to the anthracene ring. The anthracene compound represented by the formula (3-H2) is Ar 11 ∼Ar 18 It is more preferable that two of the groups are optionally substituted aryl or optionally substituted heteroaryl, and the other six are hydrogen, optionally substituted alkyl, optionally substituted cycloalkyl, optionally substituted alkenyl, or optionally substituted alkoxy. That is, it is more preferable that the anthracene compound represented by formula (3-H2) has a structure in which three substituents selected from the group consisting of optionally substituted aryl and optionally substituted heteroaryl are bonded to the anthracene ring. The anthracene compound represented by the formula (3-H2) is Ar 11 ∼Ar 18 It is more preferable that any two of them are optionally substituted aryl or optionally substituted heteroaryl, and the other six are hydrogen, methyl or t-butyl. Also, in formula (3-H2), R c go Hydrogen, Ar 11 ∼Ar 18 middle It is desirable that six of them are hydrogen. The anthracene compound represented by formula (3-H2) is preferably an anthracene compound represented by formula (3-H2-A), (3-H2-B), (3-H2-C), (3-H2-D) or (3-H2-E). Among the formulas (3-H2-A), (3-H2-B), (3-H2-C), (3-H2-D) or (3-H2-E), Arc' , Ar 11' , Ar 12' , Ar 13' , Ar 14' , Ar 15' , Ar 17' and Ar 18' are each independently phenyl, biphenylyl, terphenylyl, quaternaryl, naphthyl, phenanthryl, fluorenyl, benzofluorenyl, chrysenyl, triphenylenyl, pyrenyl, or a group represented by formula (A), and at least one hydrogen of these groups may be substituted with phenyl, biphenylyl, terphenylyl, quaternaryl, naphthyl, phenanthryl, fluorenyl, benzofluorenyl, chrysenyl, triphenylenyl, pyrenyl, or a group represented by formula (A). Here, when all hydrogens of methylene in fluorenyl and benzofluorenyl are substituted with phenyl, these phenyls may be bonded to each other by a single bond. Ar c' , Ar 11' , Ar 12' , Ar 13' , Ar 14' , Ar 15' , Ar 17' and Ar 18' The carbon atoms of this unbound anthracene ring may have methyl or t-butyl bonded instead of hydrogen. Ar c' , Ar 11' , Ar 12' , Ar 13' , Ar 14' , Ar 15' , Ar 17' and Ar 18' In the case where each of these is a substituted or unsubstituted phenyl or a substituted or unsubstituted naphthyl, it is preferable that it be a group represented by any one of the formulae (3-H2-X1) to (3-H2-X8). Ar c' , Ar 11' , Ar 12' , Ar 13' , Ar 14' , Ar 15' , Ar 17' and Ar18' silver It is more preferable that each independently be phenyl, biphenylyl (especially biphenyl-2-yl or biphenyl-4-yl), terphenylyl (especially m-terphenyl-5'-yl), naphthyl, phenanthryl, fluorenyl, or a group represented by any one of the above formulae (A-1) to (A-4), and in this case, at least one hydrogen of these groups may be substituted with phenyl, biphenylyl, naphthyl, phenanthryl, fluorenyl, or a group represented by any one of the above formulae (A-1) to (A-4). In addition, one or more hydrogen atoms in the compounds represented by formula (3-H2-A), (3-H2-B), (3-H2-C), (3-H2-D) or (3-H2-E) may be substituted with halogen, cyano or deuterium. In addition, a deuterated form is preferred, and a form in which all anthracene rings are deuterated or a form in which all hydrogen atoms are deuterated is preferred. As an anthracene compound represented by a particularly preferred formula (3-H2), an anthracene compound represented by the following formula (3-H2-Aa) may be mentioned. In the formula (3-H2-Aa), Ar c' , Ar 14' and Ar 15' are each independently phenyl, biphenylyl, terphenylyl, naphthyl, phenanthryl, fluorenyl, benzofluorenyl, chrysenyl, triphenylenyl, pyrenyl or a group represented by any one of the above formulae (A-1) to (A-11), and at least one hydrogen of these groups may be substituted with phenyl, biphenylyl, terphenylyl, naphthyl, phenanthryl, fluorenyl, benzofluorenyl, chrysenyl, triphenylenyl, pyrenyl or a group represented by any one of the formulae (A-1) to (A-11). Here, when all hydrogens of methylene in fluorenyl and benzofluorenyl are substituted with phenyl, these phenyls may be bonded to each other by a single bond. In addition, Ar c' , Ar 14' and Ar15' The carbon atoms of the anthracene ring to which methyl or t-butyl is not bonded may be substituted instead of hydrogen. One or more hydrogens in the compound represented by the formula (3-H2-Aa) may be substituted with halogen or cyano, and further, one or more hydrogens in the compound represented by the formula (3-H2-Aa) may be substituted with deuterium. In the formula (3-H2-Aa), Ar c' , Ar 14' and Ar 15' It is preferable that each independently be phenyl, biphenylyl, terphenylyl, naphthyl, phenanthryl, fluorenyl, or a group represented by any one of the above formulae (A-1) to (A-4), and at least one hydrogen of these groups may be substituted with phenyl, naphthyl, phenanthryl, fluorenyl, or a group represented by any one of the formulae (A-1) to (A-4). In the compound represented by the formula (3-H2-Aa), at least the carbon at position 10 of the anthracene ring (Ar c' It is preferable that the hydrogen bonded to the carbon atom (wherein the carbon atom is at position 9) is replaced with deuterium. That is, the compound represented by the formula (3-H2-Aa) is preferably a compound represented by the following formula (3-H2-Ab). In addition, in the formula (3-H2-Ab), D is deuterium, and Ar c' , Ar 14' and Ar 15' is the same as the definition in formula (3-H2-Aa). In formula (3-H2-Ab), D indicates that at least this position is deuterium, and any other one or more hydrogens in formula (3-H2-Ab) may be deuterium at the same time, and it is also preferable that all hydrogens in formula (3-H2-Ab) are deuterium. Specific examples of anthracene compounds include, for example, compounds represented by formulae (3-131-Y) to (3-182-Y), compounds represented by formulae (3-183-N), (3-184-Y) to (3-284-Y), and (3-500) to (3-557), and (3-600) to (3-605), and compounds represented by formulae (3-606-Y) to (3-626-Y). In these formulae, hydrogen atoms may be partially or fully substituted with deuterium, but particularly preferred forms of deuterium substitution are individually listed. Y in the formulae is -O-, -S-, >NR 29 (R 29 (same definition as above) or >C(-R 30 )2(R 30 It can be any of aryl, or alkyl, which may be connected, and R 29 For example, phenyl, R 30 For example, it is methyl. The formula number is, for example, when Y is O, formula (3-131-Y) becomes formula (3-131-O), and when Y is -S- or >NR 29 In this case, each is expressed as equation (3-131-S) or equation (3-131-N). In the above formula, D is deuterium. Among these compounds, formula (3-131-Y)∼(3-134-Y), formula (3-138-Y), formula (3-140-Y)∼(3-143-Y), formula (3-150-Y), formula (3-153-Y)∼(3-156-Y), formula (3-166-Y), formula (3-168-Y), formula (3-173-Y), formula (3-177-Y), formula (3-180-Y)∼(3-183-N), formula (3-185-Y), formula (3-190-Y), formula (3-223-Y), formula (3-241-Y), formula (3-250-Y), formula (3-252-Y)∼(3-254-Y), formula (3-270-Y)∼(3-284-Y), Compounds represented by formula (3-501), formula (3-507), formula (3-508), formula (3-509), formula (3-513), formula (3-514), formula (3-519), formula (3-521), formula (3-538) to formula (3-547) or formula (3-600) to formula (3-605), and formula (3-606-Y) to formula (3-626-Y) are preferred. In addition, Y is -O- or >NR 29 go Preferably, -O- is more preferable. Also, the form of deuterium substitution is also preferable. The above anthracene compound is a compound having a reactive group at a desired position of the anthracene skeleton and an anthracene compound represented by formula (3-H), X, Ar 4 And, using a compound having a reactive group in a partial structure such as the structure (A) as a starting material, it can be produced by applying Suzuki coupling, Negishi coupling, and other known coupling reactions. The reactive groups of these reactive compounds include halogens and boronic acids. As a specific production method, for example, see paragraph of International Publication No. 2014 / 141725.

[0089] ∼

[0175] You can refer to the synthesis method in . [Fluorene compounds] The compound represented by formula (4-H) basically functions as a host. In formula (4-H), R 1 ∼R 10 are each independently hydrogen, aryl, heteroaryl (the heteroaryl may be bonded to the fluorene skeleton of formula (4-H) via a single bond or a linking group), diarylamino (two aryls may be bonded to each other via a linking group), diheteroarylamino (two heteroaryls may be bonded to each other via a linking group), arylheteroarylamino (aryl and heteroaryl may be bonded to each other via a linking group), alkyl, cycloalkyl, alkenyl, alkoxy or aryloxy, and at least one hydrogen among these may be substituted with aryl, heteroaryl, alkyl or cycloalkyl, and further, R 1 and R 2 , R 2 Wow R 3 , R 3 and R 4 , R 5 Wow R 6 , R 6 and R 7 , R 7 and R 8 or R 9 Wow R 10These may each independently combine to form a condensed ring or spiro ring, and one or more hydrogens in the formed ring may be substituted with aryl, heteroaryl (the heteroaryl may be bonded to the formed ring via a single bond or a linking group), diarylamino (two aryls may be bonded to each other via a linking group), diheteroarylamino (two heteroaryls may be bonded to each other via a linking group), arylheteroarylamino (aryl and heteroaryl may be bonded to each other via a linking group), alkyl, cycloalkyl, alkenyl, alkoxy or aryloxy, and one or more hydrogens among these may be substituted with aryl, heteroaryl, alkyl or cycloalkyl, and one or more hydrogens in the compound represented by formula (4-H) may be substituted with halogen, cyano or deuterium. In addition, as a specific example of heteroaryl, a monovalent group represented by excluding any one hydrogen atom from a compound of the following formula (4-Ar1), formula (4-Ar2), formula (4-Ar3), formula (4-Ar4), or formula (4-Ar5) may also be mentioned. Among formulas (4-Ar1) to (4-Ar5), Y 1 are each independently O, S or NR, R is phenyl, biphenylyl, naphthyl, anthracenyl or hydrogen, and one or more hydrogens in the structures of formulae (4-Ar1) to (4-Ar5) may be substituted with phenyl, biphenylyl, naphthyl, anthracenyl, phenanthryl, methyl, ethyl, propyl, or butyl. These heteroaryls may be bonded to the fluorene skeleton of formula (4-H) via a single bond or a linking group. That is, the fluorene skeleton of formula (4-H) and the heteroaryl may be bonded not only directly but also via a linking group therebetween. Examples of this linking group include phenylene, biphenylene, naphthylene, anthracenylene, methylene, ethylene, -OCH2CH2-, -CH2CH2O-, or -OCH2CH2O-. Also, R in formula (4-H) 1 and R 2 , R 2 Wow R 3 , R 3 and R 4 , R 5 Wow R 6 , R 6 and R 7 , or R 7 and R 8 These are independently combined to form a condensed ring, R 9 Wow R 10 This bond may form a spirocycle. R 1 ∼R 8 The condensed ring formed by is a ring condensed with the benzene ring of formula (4-H) and is an aliphatic ring or an aromatic ring. Preferably, it is an aromatic ring, and structures including the benzene ring in formula (4-H) include a naphthalene ring or a phenanthrene ring. R 9 Wow R 10 The spiro ring formed by is a ring spiro-bonded to the 5-membered ring in formula (4-H), and is an aliphatic ring or an aromatic ring. Preferably, it is an aromatic ring, and examples thereof include a fluorene ring. The compound represented by formula (4-H) is preferably a compound represented by formula (4-H-1), formula (4-H-2) or formula (4-H-3), and in formula (4-H), R 1 and R 2 A compound formed by combining benzene rings, R in formula (4-H) 3 and R 4 A compound formed by combining benzene rings, R in formula (4-H) 1 ∼R 8 It is a compound in which none of the elements are combined. R in Eq. (4-H-1), Eq. (4-H-2) and Eq. (4-H-3) 1 ∼R 10 The definition of R corresponds to equation (4-H). 1 ∼R 10is the same as , and R in equations (4-H-1) and (4-H-2) 11 ∼R 14 The definition of R in equation (4-H) 1 ∼R 10 is the same as The compound represented by formula (4-H) is more preferably a compound represented by formula (4-H-1A), formula (4-H-2A) or formula (4-H-3A), wherein R in formula (4-H-1), formula (4-H-2) or formula (4-H-3) respectively 9 Wow R 10 This is a compound in which a spiro-fluorene ring is formed by combining. R in formula (4-H-1A), formula (4-H-2A) and formula (4-H-3A) 2 ∼R 7 The definition of R corresponds to equations (4-H-1), (4-H-2) and (4-H-3). 2 ∼R 7 is the same as, and R in formula (4-H-1A) and formula (4-H-2A) 11 ∼R 14 The definition of R in equations (4-H-1) and (4-H-2) 11 ∼R 14 is the same as Additionally, in the compound represented by formula (4-H), all or part of the hydrogen may be replaced with halogen, cyano, or deuterium. More specific examples of fluorene compounds as hosts of the present invention include compounds represented by the structural formula below. [Dibenzochrysene compound] The dibenzochrysene compound as a host is, for example, a compound represented by the following formula (5-H). In formula (5-H), R 1 ∼R 16are each independently hydrogen, aryl, heteroaryl (the heteroaryl may be bonded to the dibenzochrysene skeleton of formula (5-H) through a single bond or a linking group), diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, cycloalkyl, alkenyl, alkoxy or aryloxy, and at least one hydrogen among these may be substituted with aryl, heteroaryl, alkyl or cycloalkyl, and further, R 1 ∼R 16 Adjacent groups may be bonded to form a condensed ring, and one or more hydrogens in the formed ring may be substituted with aryl, heteroaryl (the heteroaryl may be bonded to the formed ring via a single bond or a linking group), diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, cycloalkyl, alkenyl, alkoxy or aryloxy, and one or more hydrogens in these may be substituted with aryl, heteroaryl, alkyl or cycloalkyl, and one or more hydrogens in the compound represented by formula (5-H) may be substituted with halogen, cyano or deuterium. As the alkenyl in the definition of formula (5-H), for example, alkenyl having 2 to 30 carbon atoms can be mentioned, alkenyl having 2 to 20 carbon atoms is preferable, alkenyl having 2 to 10 carbon atoms is more preferable, alkenyl having 2 to 6 carbon atoms is still more preferable, and alkenyl having 2 to 4 carbon atoms is particularly preferable. Preferred alkenyls are vinyl, 1-propenyl, 2-propenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 4-pentenyl, 1-hexenyl, 2-hexenyl, 3-hexenyl, 4-hexenyl, or 5-hexenyl. In addition, as a specific example of heteroaryl, a monovalent group represented by excluding any one hydrogen atom from a compound of the following formula (5-Ar1), formula (5-Ar2), formula (5-Ar3), formula (5-Ar4), or formula (5-Ar5) may also be mentioned. Among formulas (5-Ar1) to (5-Ar5), Y 1 silver Each independently represents O, S or NR, R represents phenyl, biphenylyl, naphthyl, anthracenyl or hydrogen, and one or more hydrogens in the structures of formulae (5-Ar1) to (5-Ar5) may be substituted with phenyl, biphenylyl, naphthyl, anthracenyl, phenanthryl, methyl, ethyl, propyl or butyl. These heteroaryls may be bonded to the dibenzochrysene skeleton of formula (5-H) via a single bond or a linking group. That is, the dibenzochrysene skeleton of formula (5-H) and the heteroaryl may be bonded not only directly but also via a linking group therebetween. Examples of this linking group include phenylene, biphenylene, naphthylene, anthracenylene, methylene, ethylene, -OCH2CH2-, -CH2CH2O-, or -OCH2CH2O-. The compound represented by formula (5-H) is preferably R 1 , R 4 , R 5 , R 8 , R 9 , R 12 , R 13 and R 16 is hydrogen. In this case, R in formula (5-H) 2 , R 3 , R 6 , R 7 , R 10 , R 11 , R 14 and R 15are each independently hydrogen, phenyl, biphenylyl, naphthyl, anthracenyl, phenanthryl, a monovalent group having a structure represented by formula (5-Ar1), formula (5-Ar2), formula (5-Ar3), formula (5-Ar4), or formula (5-Ar5) (the monovalent group having the structure may be bonded to the dibenzochrysene skeleton in formula (5-H) via phenylene, biphenylene, naphthylene, anthracenylene, methylene, ethylene, -OCH2CH2-, -CH2CH2O-, or -OCH2CH2O-), methyl, ethyl, propyl, or butyl. The compound represented by formula (5-H) is more preferably R 1 , R 2 , R 4 , R 5 , R 7 , R 8 , R 9 , R 10 , R 12 , R 13 , R 15 and R 16 is hydrogen. In this case, R in formula (5-H) 3 , R 6 , R 11 and R 14 At least one (preferably one or two, more preferably one) of which is a monovalent group having a structure of formula (5-Ar1), formula (5-Ar2), formula (5-Ar3), formula (5-Ar4), or formula (5-Ar5) via a single bond, phenylene, biphenylene, naphthylene, anthracenylene, methylene, ethylene, -OCH2CH2-, -CH2CH2O-, or -OCH2CH2O-, and other than at least one (i.e., other than the position where the monovalent group having the above structure is substituted) is hydrogen, phenyl, biphenylyl, naphthyl, anthracenyl, methyl, ethyl, propyl, or butyl, and one or more hydrogens among these may be substituted with phenyl, biphenylyl, naphthyl, anthracenyl, methyl, ethyl, propyl, or butyl. Also, R in formula (5-H) 2 , R 3 , R6 , R 7 , R 10 , R 11 , R 14 and R 15 In the case where a monovalent group having a structure represented by formula (5-Ar1) to formula (5-Ar5) is selected, at least one hydrogen in the structure is R in formula (5-H). 1 ∼R 16 It may be combined with any one of them to form a single bond. More specific examples of dibenzochrysene compounds as hosts of the present invention include compounds represented by the structural formula below. The above-mentioned light-emitting layer materials (host materials and dopant materials) can also be used as light-emitting layer materials as polymer compounds in which a reactive compound having a reactive substituent substituted therein is polymerized as a monomer, or as a polymer crosslinked product thereof, or as a pendant polymer compound in which a main chain polymer and the reactive compound are reacted, or as a pendant polymer crosslinked product thereof. In this case, as a reactive substituent, the description of the polycyclic aromatic compound represented by Formula (1) can be cited. [pyrene compounds] A pyrene compound as a host is, for example, a compound represented by the following formula (6-H). In the above formula (6-H), R 1 ∼R 11 are each independently hydrogen, aryl, heteroaryl, diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, cycloalkyl, alkenyl, alkoxy or aryloxy, and at least one hydrogen among them may be substituted with aryl, heteroaryl, alkyl or cycloalkyl, and further, R 1 ∼R 11Adjacent groups may be bonded to form a condensed ring, and one or more hydrogens in the formed ring may be substituted with aryl, heteroaryl (the heteroaryl may be bonded to the formed ring via a single bond or a linking group), diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, cycloalkyl, alkenyl, alkoxy or aryloxy, and one or more hydrogens in these may be substituted with aryl, heteroaryl, alkyl or cycloalkyl, and one or more hydrogens in the compound represented by formula (6-H) may be independently substituted with halogen, cyano or deuterium. More specific examples of pyrene compounds as hosts of the present invention include compounds represented by the structural formula below. [Fluoranthene compounds] The fluoranthene compound as a host is, for example, a compound represented by the following formula (7-H). In the above formula (7-H), R 1 ∼R 10 are each independently hydrogen, aryl, heteroaryl, diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, cycloalkyl, alkenyl, alkoxy or aryloxy, and at least one hydrogen among them may be substituted with aryl, heteroaryl, alkyl or cycloalkyl, and further, R 1 ∼R 10Adjacent groups may be bonded to form a condensed ring, and one or more hydrogens in the formed ring may be substituted with aryl, heteroaryl (the heteroaryl may be bonded to the formed ring via a single bond or a linking group), diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, cycloalkyl, alkenyl, alkoxy or aryloxy, and one or more hydrogens in these may be substituted with aryl, heteroaryl, alkyl or cycloalkyl, and one or more hydrogens in the compound represented by formula (7-H) may be independently substituted with halogen, cyano or deuterium. As a fluoranthene compound represented by formula (7-H), the following formula (7-H-1) is also preferable. In the above formula (7-H-1), R 1 ~R 12 The definition of R in equation (7-H) 1 ~R 10 and one or more hydrogens in the compound represented by formula (7-H-1) may be independently replaced with halogen, cyano, or deuterium. More specific examples of fluoranthene compounds as hosts of the present invention include compounds represented by the structural formula below. [Benzoanthracene compound] The benzoanthracene compound as a host is, for example, a compound represented by the following formula (8-H). In the above formula (8-H), R 1 ∼R 12 are each independently hydrogen, aryl, heteroaryl, diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, cycloalkyl, alkenyl, alkoxy or aryloxy, and at least one hydrogen among these may be substituted with aryl, heteroaryl, alkyl or cycloalkyl, and further, R1 ∼R 12 Adjacent groups may be bonded to form a condensed ring, and one or more hydrogens in the formed ring may be substituted with aryl, heteroaryl (the heteroaryl may be bonded to the formed ring via a single bond or a linking group), diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, cycloalkyl, alkenyl, alkoxy or aryloxy, and one or more hydrogens in these may be substituted with aryl, heteroaryl, alkyl or cycloalkyl, and one or more hydrogens in the compound represented by formula (8-H) may be independently substituted with halogen, cyano or deuterium. More specific examples of benzoanthracene compounds as hosts of the present invention include compounds represented by the structural formula below. <Assisting dopant (thermally activated delayed phosphor or phosphorescent material)> The light-emitting layer in an organic electroluminescent device may include a host compound as a first component, an assisting dopant as a second component, and an emitting dopant as a third component. The polycyclic aromatic compound of the present invention is preferably used as an emitting dopant. A thermally activated delayed fluorescent substance or a phosphorescent material may be used as the assisting dopant (compound). In the description below, an organic electroluminescent device that uses a thermally activated delayed fluorescent material as an assisting dopant is sometimes referred to as a "TAF device" (TADF Assisting Fluorescence device). In addition, an organic electroluminescent device that uses a phosphorescent material as an assisting dopant is sometimes referred to as a PSF device (phosphorescence assisted device: phosphorescence-sensitized fluorescent device). In the present embodiment, the light-emitting layer may be a single layer or may be composed of multiple layers. Furthermore, the host compound, the assisting dopant, and the polycyclic aromatic compound of the present invention may be contained in the same layer, or at least one component may be contained in multiple layers. The host compound, the assisting dopant, and the polycyclic aromatic compound of the present invention contained in the light-emitting layer may each be a single type, or a combination of multiple types. The assisting dopant and the emitting dopant may be contained entirely or partially in the host compound as a matrix. The light-emitting layer doped with an assisting dopant and an emitting dopant can be formed by a method of forming a film by a ternary co-deposition method of a host compound, an assisting dopant, and an emitting dopant, a method of mixing the host compound, an assisting dopant, and an emitting dopant in advance and then simultaneously depositing them, a wet film-forming method of applying a composition (paint) for forming a light-emitting layer prepared by dissolving the host compound, an assisting dopant, and an emitting dopant in an organic solvent, etc. The amount of the host compound used varies depending on the type of the host compound and can be determined based on the characteristics of the host compound. The standard amount of the host compound used is preferably 40 to 99 mass% of the total mass of the material for the light-emitting layer, more preferably 50 to 98 mass%, and even more preferably 60 to 95 mass%. The above range is preferable from the viewpoints of, for example, efficient charge transport and efficient energy transfer to the dopant. The amount of assisting dopant used varies depending on the type of assisting dopant and can be determined based on the characteristics of the assisting dopant. The standard amount of assisting dopant used is preferably 1 to 60 mass% of the total mass of the material for the light-emitting layer, more preferably 2 to 50 mass%, and even more preferably 5 to 30 mass%. The above range is preferable, for example, because it allows for efficient transfer of energy to the emitting dopant. The amount of emitting dopant (a compound containing boron atoms) used varies depending on the type of emitting dopant and can be determined based on the characteristics of the emitting dopant. The standard amount of emitting dopant used is preferably 0.001 to 30 mass% of the total mass of the material for the light-emitting layer, more preferably 0.01 to 20 mass%, and even more preferably 0.1 to 10 mass%. The above range is preferable in that, for example, concentration quenching can be prevented. A low concentration of emitting dopant is desirable from the perspective of preventing concentration quenching. A high concentration of assisting dopant is desirable from the perspective of improving the efficiency of the thermally activated delayed fluorescence mechanism. Furthermore, a low concentration of emitting dopant is desirable compared to the amount of assisting dopant used, from the perspective of improving the efficiency of the thermally activated delayed fluorescence mechanism. In the present embodiment, a known host compound can be used. The lowest excited triplet energy level E(1, T, Sh) obtained from the shoulder on the short-wavelength side of the peak of the phosphorescence spectrum of the host compound is preferably higher than the lowest excited triplet energy levels E(2, T, Sh), E(3, T, Sh) of the emitting dopant or assisting dopant having the highest lowest excited triplet energy level in the light-emitting layer, from the viewpoint of promoting rather than inhibiting the generation of TADF in the light-emitting layer. Specifically, the lowest excited triplet energy level E(1, T, Sh) of the host compound is preferably 0.01 eV or higher, more preferably 0.03 eV or higher, and even more preferably 0.1 eV or higher, compared to E(2, T, Sh), E(3, T, Sh). In addition, a TADF-active compound may be used for the host compound. In addition, in the TAF device, the term "host compound" means a compound having a lowest excited singlet energy level obtained from a shoulder on the short-wavelength side of the peak of the fluorescence spectrum that is higher than that of the thermally activated delayed fluorescent material as the second component and the emitting dopant as the third component. As the host compound, for example, a compound having at least one of a carbazole ring and a furan ring can be mentioned, and among these, a compound combined with at least one of furanyl and carbazolyl and at least one of arylene and heteroarylene is preferably used. As the host compound, for example, a compound represented by any one of the above formulae (H1), (H2), and (H3) can be used, and more specifically, mCP or mCBP can be used. [Thermal activated delayed phosphor (assisting dopant)] "Thermal activated delayed fluorescence" refers to a compound that can absorb thermal energy to cause reverse intersystem crossing from the lowest excited triplet state to the lowest excited singlet state, thereby emitting delayed fluorescence by radiative deactivation from the lowest excited singlet state. However, "thermal activated delayed fluorescence" also includes a compound that passes through a higher-order triplet during the excitation process from the lowest excited triplet state to the lowest excited singlet state. The polycyclic aromatic compound of the present invention can function as an emitting dopant, and the “thermally activated delayed fluorescent substance” can function as an assisting dopant that assists the luminescence of the polycyclic aromatic compound of the present invention. The thermally activated delayed fluorescent material (TADF compound) used in the TAF device is preferably a donor-acceptor type thermally activated delayed fluorescent material (DA type TADF compound) designed to localize the HOMO (Highest Occupied Molecular Orbital) and LUMO (Lowest Unoccupied Molecular Orbital) within the molecule by using an electron-donating substituent called a donor and an electron-accepting substituent called an acceptor, thereby allowing efficient reverse intersystem crossing. Here, the "electron-donating substituent" (donor) in the present specification means a substituent and partial structure in which the HOMO is localized among thermally activated delayed fluorescent material molecules, and the "electron-accepting substituent" (acceptor) means a substituent and partial structure in which the LUMO is localized among thermally activated delayed fluorescent material molecules. In general, thermally activated delayed phosphors using a donor or acceptor have a large spin-orbit coupling (SOC) due to their structure, and also have a small exchange interaction between HOMO and LUMO and a small △E(ST), so that a very fast inter-system crossing velocity is obtained. By using the polycyclic aromatic compound of the present invention as an emitting dopant and the thermally activated delayed phosphor (TADF material) as an assisting dopant, a device satisfying one or all of high efficiency, high color purity, and long life can be provided. The thermally activated delayed fluorescent material may be a compound whose emission spectrum overlaps at least partially with the absorption spectrum of the polycyclic aromatic compound of the present invention. The polycyclic aromatic compound of the present invention and the thermally activated delayed fluorescent material may both be contained in the same layer, or may be contained in adjacent layers or other adjacent layers. As a thermally activated delayed phosphor in a TAF device, for example, a compound in which a donor and an acceptor are bonded directly or through a spacer can be used. As an electron-donating group (donor structure) and an electron-accepting group (acceptor structure) used in the thermally activated delayed phosphor of the present invention, for example, a structure described in Chemistry of Materials, 2017, 29, 1946-1963 can be used. Donor structures include carbazole, dimethylcarbazole, di-tert-butylcarbazole, dimethoxycarbazole, tetramethylcarbazole, benzofluorocarbazole, benzothienocarbazole, phenyldihydroindolocarbazole, phenylbicarbazole, bicarbazole, tercarbazole, diphenylcarbazolylamine, tetraphenylcarbazolyldiamine, phenoxazine, dihydrophenazine, phenothiazine, dimethyldihydroacridine, diphenylamine, bis(tert-butylphenyl)amine, N1-(4-(diphenylamino)phenyl)-N4,N4-diphenylbenzene-1,4-diamine, dimethyltetraphenyldihydroacridinediamine, tetramethyl-dihydro-indenoacridine, and diphenyl-dihydrodibenzoazacilline. Acceptor structures include sulfonyldibenzene, benzophenone, phenylenebis(phenylmethanone), benzonitrile, isonicotinonitrile, phthalonitrile, isophthalonitrile, paraphthalonitrile, benzenetricarbonitrile, triazole, oxazole, thiadiazole, benzothiazole, benzobis(thiazole), benzoxazole, benzobis(oxazole), quinoline, benzimidazole, dibenzoquinoxaline, heptaazaphenalene, thioxanthone dioxide, dimethylanthracenone, anthracenedione, 5H-cyclopenta[1,2-b:5,4-b']dipyridine, fluorenedicarbonitrile, triphenyltriazine, pyrazinedicarbonitrile, pyrimidine, phenylpyrimidine, methylpyrimidine, Examples include pyridinedicarbonitrile, dibenzoquinoxalinedicarbonitrile, bis(phenylsulfonyl)benzene, dimethylthioxanthenedioxide, thianthrenetetraoxide, and tris(dimethylphenyl)borane.In particular, it is preferable that the compound having thermally activated delayed fluorescence in the TAF device is a compound having at least one selected from carbazole, phenoxazine, acridine, triazine, pyrimidine, pyrazine, thioxanthene, benzonitrile, phthalonitrile, isophthalonitrile, diphenylsulfone, triazole, oxadiazole, thiadiazole, and benzophenone as a partial structure. In a TAF device, the second component of the light-emitting layer is preferably a thermally activated delayed phosphor whose emission spectrum overlaps at least partially with the absorption peak of the emitting dopant. Below, compounds that can be used as the second component (thermally activated delayed phosphor) of the light-emitting layer in a TAF device are exemplified. However, the compounds that can be used as the thermally activated delayed phosphor in a TAF device are not limited to the exemplified compounds below. Additionally, as a thermally activated delayed fluorescent material, a compound represented by any one of the following formulae (AD1), (AD2), and (AD3) can also be used. In the above formulas (AD1), (AD2) and (AD3), M is each independently a single bond, -O-, >N-Ar or >CAr2, and in view of the depth of the HOMO of the formed partial structure and the height of the lowest excited singlet energy level and the lowest excited triplet energy level, it is preferably a single bond, -O- or >N-Ar. J is a spacer structure dividing the donor partial structure and the acceptor partial structure, and is each independently an arylene having 6 to 18 carbon atoms, and in view of the conjugation size exuded from the donor partial structure and the acceptor partial structure, an arylene having 6 to 12 carbon atoms is preferable. More specifically, phenylene, methylphenylene and dimethylphenylene can be mentioned. Q is each independently =C(-H)- or =N-, and in view of the shallowness of the LUMO of the formed partial structure and the height of the lowest excited singlet energy level and the lowest excited triplet energy level, it is preferably =N-. Ar is independently hydrogen, aryl having 6 to 24 carbon atoms, heteroaryl having 2 to 24 carbon atoms, alkyl having 1 to 12 carbon atoms, or cycloalkyl having 3 to 18 carbon atoms, and in view of the depth of HOMO of the formed partial structure and the height of the lowest excited singlet energy level and the lowest excited triplet energy level, it is preferably hydrogen, aryl having 6 to 12 carbon atoms, heteroaryl having 2 to 14 carbon atoms, alkyl having 1 to 4 carbon atoms, or cycloalkyl having 6 to 10 carbon atoms, more preferably hydrogen, phenyl, tolyl, xylyl, mesityl, biphenyl, pyridyl, bipyridyl, triazinyl, carbazolyl, dimethylcarbazolyl, di-tert-butylcarbazolyl, benzoimidazolyl, or phenylbenzoimidazolyl, and even more preferably hydrogen, phenyl, or carbazolyl. m is 1 or 2. n is an integer less than or equal to (6-m), and from the viewpoint of steric hindrance, it is preferably an integer from 4 to (6-m). In addition, one or more hydrogen atoms in the compounds represented by each of the above formulas may be replaced with halogen or deuterium. The compound used as the second component of the light-emitting layer in the TAF device is preferably, more specifically, 4CzBN, 4CzBN-Ph, 5CzBN, 3Cz2DPhCzBN, 4CzIPN, 2PXZ-TAZ, Cz-TRZ3, BDPCC-TPTA, MA-TA, PA-TA, FA-TA, PXZ-TRZ, DMAC-TRZ, BCzT, DCzTrz, DDCzTRz, spiroAC-TRZ, Ac-HPM, Ac-PPM, Ac-MPM, TCzTrz, TmCzTrz and DCzmCzTrz. The compound used as the second component of the light-emitting layer in the TAF device may be a donor-acceptor type TADF compound represented by DA in which one donor D and one acceptor A are bonded directly or through a linking group, but a compound having a structure represented by the following formula (DAD1) in which multiple donors D are bonded directly or through a linking group to one acceptor A is preferable because the characteristics of the organic electroluminescent device are improved. (D 1 -L 1 )nA 1 (DAD1) Formula (DAD1) includes a compound represented by the following formula (DAD2). D 2 -L 2 -A 2 -L 3 -D 3 (DAD2) In formula (DAD1) and formula (DAD2), D 1 , D 2 and D 3 Each independently represents a donor group. As a donor group, the donor structure mentioned above can be adopted. A 1 and A 2 Each independently represents an acceptor group. The acceptor group may adopt the above acceptor structure. L 1 , L 2 and L 3Each independently represents a single bond or a conjugated linking group. The conjugated linking group is a spacer structure that separates the donor group and the acceptor group, and is preferably an arylene having 6 to 18 carbon atoms, and more preferably an arylene having 6 to 12 carbon atoms. L 1 , L 2 and L 3 It is more preferable that each is independently phenylene, methylphenylene or dimethylphenylene. In formula (DAD1), n ​​is 2 or more, and A 1 This represents an integer less than or equal to the maximum number that can be substituted. n can be selected, for example, within the range of 2 to 10, or within the range of 2 to 6. When n is 2, it becomes a compound represented by the formula (DAD2). n D 1 may be the same or different, and n L 1 may be the same or different. Preferred specific examples of the compounds represented by formula (DAD1) and formula (DAD2) include 2PXZ-TAZ and the following compounds, but the second component that can be employed in the present invention is not limited to these compounds. [phosphorescent material (assisted dopant)] In the light-emitting layer, a phosphorescent material may be used as an assisting dopant. Phosphorescent materials obtain light emission from an excited triplet state by utilizing intramolecular spin-orbit interaction (heavy atom effect) by metal atoms. Such phosphorescent materials may, for example, be luminescent metal complexes. Examples of luminescent metal complexes include compounds represented by the following formulae (B-1) and (B-2). In formula (B-1), M is at least one selected from the group consisting of Ir, Pt, Au, Eu, Ru, Re, Ag, and Cu, n is an integer from 1 to 3, and “XY” are each independently a bidentate ligand. In formula (B-2), M is at least one selected from the group consisting of Pt, Re, and Cu, and “WXYZ” is a four-dentate ligand. In equation (B-1), from the viewpoint of efficiency and lifespan, M is preferably Ir, and n is preferably 3. In formula (B-2), from the viewpoint of efficiency and lifespan, Pt is preferable for M. The ligand (XY) in formula (B-1) has one or more ligands selected from the group consisting of the following. The ligand (WXYZ) in formula (B-2) has one or more ligands selected from the group consisting of the following as a part. During the meal, - - - combines with the central metal M, Y is each independently BR e , NR e , PR e , O, S, Se, C=O, S=O, SO2, CR e R f , SiR e R f or GeR e R f And, The aromatic carbons CH in the ring may each be independently substituted with N, R e and R f Is They may be arbitrarily condensed or combined to form a ring, R a , R b , R c and R d are each independently unsubstituted or 1~may be substituted with the maximum number that can be substituted, R a , R b , R c , R d, R e and Rf are each independently hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, aryl, heteroaryl, nitrile, isonitrile, sulfanyl, or a combination thereof, However, R a , R b, R c and R d Any two adjacent substituents in may be condensed or bonded to form a ring or a multidentate ligand. Compounds represented by formula (B-1) include, for example, Ir(ppy)3, Ir(ppy)2(acac), Ir(mppy)3, Ir(PPy)2(m-bppy), BtpIr(acac), Ir(btp)2(acac), Ir(2-phq)3, Hex-Ir(phq)3, Ir(fbi)2(acac), fac-Tris(2-(3-p-xylyl)phenyl)pyridine iridium(III), Eu(dbm)3(Phen), Ir(piq)3, Ir(piq)2(acac), Ir(Fliq)2(acac), Ir(Flq)2(acac), Ru(dtb-bpy)3·2(PF6), Ir(2-phq)3, Ir(BT)2(acac), Ir(DMP)3, Examples include Ir(Mphq)3IR(phq)2tpy, fac-Ir(ppy)2Pc, Ir(dp)PQ2, Ir(Dpm)(Piq)2, Hex-Ir(piq)2(acac), Hex-Ir(piq)3, Ir(dmpq)3, Ir(dmpq)2(acac), FPQIrpic, etc. Other compounds represented by formula (B-1) include, for example, the compounds below. In addition, the iridium complex described in the specifications of Japanese Patent Application Publication No. 2006-089398, Japanese Patent Application Publication No. 2006-080419, Japanese Patent Application Publication No. 2005-298483, Japanese Patent Application Publication No. 2005-097263, and Japanese Patent Application Publication No. 2004-111379, U.S. Patent Application Publication No. 2019 / 0051845, etc., or the platinum complex described in Advanced Materials, 26:7116-7121, NPG Asia Materials 13, 53 (2021), Applied Physics Letters, 117, 253301 (2020), Light-Emitting Diode-An Outlook On the Empirical Features and Its Recent Technological Advancements, Chapter 5 may be used. <2-1-3. Anode in organic electroluminescent devices> The anode (102) serves to inject holes into the light-emitting layer (105). In addition, when either a hole injection layer (103) or a hole transport layer (104) is installed between the anode (102) and the light-emitting layer (105), holes are injected into the light-emitting layer (105) through these layers. Examples of materials forming the anode (102) include inorganic compounds and organic compounds. Examples of inorganic compounds include metals (aluminum, gold, silver, nickel, palladium, chromium, etc.), metal oxides (indium oxide, tin oxide, indium-tin oxide (ITO), indium-zinc oxide (IZO), etc.), metal halides (copper iodide, etc.), copper sulfide, carbon black, ITO glass, Nesa glass, etc. Examples of organic compounds include polythiophenes such as poly(3-methylthiophene), conductive polymers such as polypyrrole, and polyaniline, etc. In addition, any material used as an anode of an organic EL device can be appropriately selected and used. <2-1-4. Hole injection layer and hole transport layer in organic electroluminescent devices> The hole injection layer (103) serves to efficiently inject holes moving from the anode (102) into the light-emitting layer (105) or the hole transport layer (104). The hole transport layer (104) serves to efficiently transport holes injected from the anode (102) or holes injected from the anode (102) through the hole injection layer (103) to the light-emitting layer (105). The hole injection layer (103) and the hole transport layer (104) are each formed by laminating or mixing one or more types of hole injection / transport materials, or by a mixture of a hole injection / transport material and a polymer binder. In addition, a layer may be formed by adding an inorganic salt such as iron (III) chloride to the hole injection / transport material. A hole-injecting and -transporting material must be capable of efficiently injecting and transporting holes from the positive electrode between electrodes subjected to an electric field. Preferably, the material should exhibit high hole-injection efficiency and efficiently transport the injected holes. To achieve this, a material with a low ionization potential, high hole mobility, excellent stability, and a low risk of trapping impurities during production and use is desirable. As a material forming the hole injection layer (103) and the hole transport layer (104), any compound can be selected and used from among compounds conventionally used as charge transport materials for holes in photoconductive materials, known compounds used in the hole injection layer and hole transport layer of p-type semiconductors and organic EL devices. Specific examples of these include carbazole derivatives (N-phenylcarbazole, polyvinylcarbazole, etc.), biscarbazole derivatives such as bis(N-arylcarbazole) or bis(N-alkylcarbazole), triarylamine derivatives (4,4',4''-tris(N-carbazole)triphenylamine, polymers having aromatic tertiary amino in the main chain or side chain, 1,1-bis(4-di-p-trilaminophenyl)cyclohexane, N,N'-diphenyl-N,N'-di(3-methylphenyl)-4,4'-diaminobiphenyl, N,N'-diphenyl-N,N'-dinaphthyl-4,4'-diaminobiphenyl, N,N'-diphenyl-N,N'-di(3-methylphenyl)-4,4'-diphenyl-1,1'-diamine, N,N'-dinaphthyl-N,N'-diphenyl-4,4'-diphenyl-1,1'-diamine, N 4 ,N 4' -Diphenyl-N 4 ,N 4' -Bis(9-phenyl-9H-carbazol-3-yl)-[1,1'-biphenyl]-4,4'-diamine, N 4 ,N 4 ,N 4' ,N 4'-Triphenylamine derivatives such as tetra([1,1'-biphenyl]-4-yl)-[1,1'-biphenyl]-4,4'-diamine, 4,4',4''-tris(3-methylphenyl(phenyl)amino)triphenylamine, starburst amine derivatives, etc.), stilbene derivatives, phthalocyanine derivatives (metal-free, copper phthalocyanine, etc.), pyrazoline derivatives, hydrazone compounds, benzofuran derivatives or thiophene derivatives, oxadiazole derivatives, quinoxaline derivatives (e.g., 1,4,5,8,9,12-hexaazatriphenylene-2,3,6,7,10,11-hexacarbonitrile, etc.), heterocyclic compounds such as porphyrin derivatives, polysilanes, etc. In the polymer system, polycarbonate, styrene derivative, polyvinylcarbazole, and polysilane having the above monomer in the side chain are preferable, but there is no particular limitation as long as it forms a thin film necessary for manufacturing a light-emitting element, can inject holes from the anode, and can transport holes. In addition, it is known that the conductivity of organic semiconductors is strongly influenced by their doping. These organic semiconductor matrix materials are composed of compounds with good electron donating properties or compounds with good electron accepting properties. For doping with electron donating materials, strong electron acceptors such as tetracyanoquinonedimethane (TCNQ) or 2,3,5,6-tetrafluorotetracyano-1,4-benzoquinonedimethane (F4TCNQ) are known (see, for example, the literature “M. Pfeiffer, A. Beyer, T. Fritz, K. Leo, Appl. Phys. Lett., 73(22), 3202-3204 (1998)” and the literature “J. Blochwitz, M. Pfeiffer, T. Fritz, K. Leo, Appl. Phys. Lett., 73(6), 729-731 (1998)”). These generate so-called holes through an electron transfer process in an electron-donating base material (hole transport material). The conductivity of the base material varies significantly depending on the number and mobility of holes. As matrix materials having hole transport properties, for example, benzidine derivatives (such as TPD) or starburstamine derivatives (such as TDATA), or specific metal phthalocyanines (particularly, zinc phthalocyanine (ZnPc)) are known (Japanese Patent Application Laid-Open No. 2005-167175). The polycyclic aromatic compound of the present invention may be used as a material for forming a hole injection layer or a hole transport layer. <2-1-5. Electron blocking layer in organic electroluminescent devices> An electron blocking layer may be installed between the hole injection / transport layer and the light-emitting layer to prevent electron diffusion from the light-emitting layer. The electron blocking layer may be formed using a compound represented by any one of the aforementioned formulae (H1), (H2), and (H3). The polycyclic aromatic compound of the present invention may be used as a material for forming the electron blocking layer. <2-1-6. Electron injection layer and electron transport layer in organic electroluminescent devices> The electron injection layer (107) plays a role of efficiently injecting electrons moving from the cathode (108) into the light-emitting layer (105) or the electron transport layer (106). The electron transport layer (106) plays a role of efficiently transporting electrons injected from the cathode (108) or electrons injected from the cathode (108) through the electron injection layer (107) to the light-emitting layer (105). The electron transport layer (106) and the electron injection layer (107) are each formed by laminating or mixing one or more types of electron transport / injection materials, or by a mixture of an electron transport / injection material and a polymer binder. The electron injection / transport layer is a layer that injects electrons from the cathode and is responsible for transporting them. It is desirable for the electron injection / transport layer to have high electron injection efficiency and efficiently transport the injected electrons. To achieve this, it is desirable to use a material that has high electron affinity, high electron mobility, excellent stability, and is unlikely to generate trapping impurities during manufacturing and use. However, when considering the transport balance between holes and electrons, if the electron injection / transport layer primarily plays a role in efficiently preventing holes from flowing from the anode to the cathode without recombination, even if the electron transport ability is not that high, the effect of improving luminous efficiency is equivalent to that of a material with high electron transport ability. Therefore, the electron injection / transport layer in the present embodiment may also include the function of a layer that can efficiently block the movement of holes. As a material (electron transport material) forming the electron transport layer (106) or electron injection layer (107), a compound conventionally used as an electron transport compound in a photoconductive material or a known compound used in an electron injection layer and electron transport layer of an organic EL device can be arbitrarily selected and used. It is preferable that the material used in the electron transport layer or electron injection layer contain at least one selected from compounds composed of aromatic rings or heteroaromatic rings composed of at least one atom selected from carbon, hydrogen, oxygen, sulfur, silicon, and phosphorus, pyrrole derivatives and condensed-ring derivatives thereof, and metal complexes having electron-accepting nitrogen. Specifically, examples thereof include condensed-ring aromatic ring derivatives such as naphthalene and anthracene, styryl aromatic ring derivatives represented by 4,4'-bis(diphenylethenyl)biphenyl, perinone derivatives, coumarin derivatives, naphthalimide derivatives, quinone derivatives such as anthraquinone and diphenoquinone, phosphine oxide derivatives, arylnitrile derivatives, and indole derivatives. Examples of metal complexes having electron-accepting nitrogen include hydroxyazole complexes such as hydroxyphenyloxazole complexes, azomethine complexes, tropolone metal complexes, flavonol metal complexes, and benzoquinoline metal complexes. These materials may be used alone, but may also be used in combination with other materials. In addition, as specific examples of other electron transfer compounds, pyridine derivatives, naphthalene derivatives, fluoranthene derivatives, BO derivatives, anthracene derivatives, phenanthroline derivatives, perinone derivatives, coumarin derivatives, naphthalimide derivatives, anthraquinone derivatives, diphenoquinone derivatives, diphenylquinone derivatives, perylene derivatives, oxadiazole derivatives (1,3-bis[(4-t-butylphenyl)1,3,4-oxadiazolyl]phenylene, etc.), thiophene derivatives, triazole derivatives (N-naphthyl-2,5-diphenyl-1,3,4-triazole, etc.), thiadiazole derivatives, metal complexes of oxine derivatives, quinolinol-based metal complexes, quinoxaline derivatives, polymers of quinoxaline derivatives, benzazole compounds, gallium complexes, pyrazole derivatives, perfluorinated phenylene derivatives, triazine derivatives, pyrazine derivatives, benzoquinolines Examples thereof include derivatives (2,2'-bis(benzo[h]quinolin-2-yl)-9,9'-spirobifluorene, etc.), imidazopyridine derivatives, borane derivatives, benzimidazole derivatives (tris(N-phenylbenzoimidazol-2-yl)benzene, etc.), benzoxazole derivatives, thiazole derivatives, benzothiazole derivatives, quinoline derivatives, oligopyridine derivatives such as terpyridine, bipyridine derivatives, terpyridine derivatives (1,3-bis(2,2':6',2''-terpyridin-4'-yl)benzene, etc.), naphthyridine derivatives (bis(1-naphthyl)-4-(1,8-naphthyridin-2-yl)phenylphosphineoxide, etc.), aldazine derivatives, pyrimidine derivatives, arylnitrile derivatives, indole derivatives, phosphine oxide derivatives, bistyryl derivatives, sirole derivatives, and azoline derivatives. there is. In addition, metal complexes having electron-accepting nitrogen may be used, and examples thereof include hydroxyazole complexes such as quinolinol-based metal complexes or hydroxyphenyloxazole complexes, azomethine complexes, tropolone metal complexes, flavonol metal complexes, and benzoquinoline metal complexes. The above-mentioned materials can be used alone, but can also be mixed with other materials. Among the materials mentioned above, borane derivatives, pyridine derivatives, fluoranthene derivatives, BO derivatives, anthracene derivatives, benzofluorene derivatives, phosphine oxide derivatives, pyrimidine derivatives, arylnitrile derivatives, triazine derivatives, benzimidazole derivatives, phenanthroline derivatives, quinolinol-based metal complexes, thiazole derivatives, benzothiazole derivatives, sirole derivatives, and azoline derivatives are preferable. The polycyclic aromatic compound of the present invention may be used as a material for forming an electron injection layer or a material for forming an electron transport layer. The electron transport layer or electron injection layer may further include a substance capable of reducing the material forming the electron transport layer or electron injection layer. Various substances can be used as the reducing substance as long as it has a certain reducing property, and for example, at least one selected from the group consisting of alkali metals, alkaline earth metals, rare earth metals, oxides of alkali metals, halides of alkali metals, oxides of alkaline earth metals, halides of alkaline earth metals, oxides of rare earth metals, halides of rare earth metals, organic complexes of alkali metals, organic complexes of alkaline earth metals, and organic complexes of rare earth metals can be suitably used. Preferred reducing substances include alkali metals such as Na (work function 2.36 eV), K (copper 2.28 eV), Rb (copper 2.16 eV), or Cs (copper 1.95 eV), or alkaline earth metals such as Ca (copper 2.9 eV), Sr (copper 2.0 to 2.5 eV), or Ba (copper 2.52 eV), and substances having a work function of 2.9 eV or less are particularly preferred. Among these, more preferred reducing substances are alkali metals such as K, Rb, or Cs, even more preferred are Rb or Cs, and most preferred are Cs. These alkali metals have particularly high reducing ability, and by adding a relatively small amount to a material forming an electron transport layer or an electron injection layer, it is possible to improve the luminance or extend the life of an organic EL device. In addition, as a reducing substance having a work function of 2.9 eV or less, a combination of two or more alkali metals is also preferable, and in particular, a combination including Cs, for example, a combination of Cs and Na, Cs and K, Cs and Rb, or Cs, Na and K is preferable. By including Cs, the reducing ability can be efficiently exhibited, and by adding it to a material forming an electron transport layer or an electron injection layer, the luminance of the organic EL device can be improved or the lifetime can be extended. <2-1-7. Cathode in organic electroluminescent devices> The cathode (108) serves to inject electrons into the light-emitting layer (105) through the electron injection layer (107) and the electron transport layer (106). The material forming the cathode (108) is not particularly limited as long as it is a material that can efficiently inject electrons into the organic layer, but the same material as the material forming the anode (102) can be used. Among them, metals such as tin, indium, calcium, aluminum, silver, copper, nickel, chromium, gold, platinum, iron, zinc, lithium, sodium, potassium, cesium, and magnesium, or alloys thereof (magnesium-silver alloy, magnesium-indium alloy, aluminum-lithium alloy such as lithium / aluminum fluoride, etc.) are preferable. In order to increase electron injection efficiency and improve device characteristics, alloys containing lithium, sodium, potassium, cesium, calcium, magnesium, or these low-work-function metals are effective. However, these low-work-function metals are generally often unstable in the air. To improve this, a method of using a highly stable electrode by doping a trace amount of lithium, cesium, and magnesium into the organic layer, for example, is known. Other dopants that can be used include, but are not limited to, inorganic salts such as lithium fluoride, cesium fluoride, lithium oxide, and cesium oxide. In addition, preferred examples include laminating metals such as platinum, gold, silver, copper, iron, tin, aluminum, and indium for electrode protection, or alloys using these metals, and inorganic materials such as silica, titania, and silicon nitride, polyvinyl alcohol, vinyl chloride, and hydrocarbon-based polymer compounds. The method for manufacturing these electrodes is not particularly limited as long as conductivity can be achieved, such as resistance heating, electron beam deposition, sputtering, ion plating, and coating. <2-1-8. Manufacturing method of organic electroluminescent device> Each layer constituting the organic EL device can be formed by forming a thin film using a material constituting each layer through a method such as vapor deposition, resistance heating vapor deposition, electron beam vapor deposition, sputtering, molecular layer deposition, printing, inkjet, spin coating, casting, or coating. There is no particular limitation on the film thickness of each layer formed in this way, and it can be appropriately set depending on the properties of the material, but it is usually in the range of 2 nm to 5000 nm. The film thickness can usually be measured using a crystal oscillation film thickness measuring device, etc. When forming a thin film using a vapor deposition method, the deposition conditions vary depending on the type of material, the crystal structure and association structure that the film is intended for, etc. The deposition conditions are generally a boat heating temperature of +50 to +400°C, a vacuum of 10 -6 ∼10 -3 It is desirable to set the Pa, deposition rate, substrate temperature, and film thickness appropriately within the range of 0.01 to 50 nm / sec, -150 to +300°C, and 2 nm to 5 μm. Next, as an example of a method for manufacturing an organic EL device, a method for manufacturing an organic EL device comprising an anode / hole injection layer / hole transport layer / emission layer composed of a host material and a dopant material / electron transport layer / electron injection layer / cathode will be described. On a suitable substrate, a thin film of an anode material is formed by a vapor deposition method or the like to manufacture an anode, and then thin films of a hole injection layer and a hole transport layer are formed on the anode. A host material and a dopant material are co-deposited thereon to form a thin film to form a light-emitting layer, and an electron transport layer and an electron injection layer are formed on the light-emitting layer, and a thin film composed of a cathode material is further formed by a vapor deposition method or the like to form a cathode, thereby obtaining a desired organic EL device. Furthermore, in manufacturing the above-described organic EL device, the manufacturing order can be reversed, and the devices can be manufactured in the following order: cathode, electron injection layer, electron transport layer, light-emitting layer, hole transport layer, hole injection layer, and anode. When applying a direct current voltage to the organic EL element obtained in this way, the polarity can be applied with the anode being + and the cathode being -, and when a voltage of about 2 to 40 V is applied, light emission can be observed from the transparent or translucent electrode side (anode or cathode, or both). In addition, this organic EL element also emits light when a pulse current or an alternating current is applied. In addition, the waveform of the applied alternating current can be arbitrary. <2-1-9. Application examples of organic electroluminescent devices> Organic EL devices can also be applied to display devices or lighting devices. A display device or lighting device having an organic EL element can be manufactured by a known method, such as connecting an organic EL element to a known driving device, and can be driven by appropriately using a known driving method, such as direct current driving, pulse driving, or alternating current driving. Examples of the display device include panel displays such as a color flat panel display, and flexible displays such as a flexible color organic electroluminescent (EL) display (see, for example, Japanese Patent Application Laid-Open No. 10-335066, Japanese Patent Application Laid-Open No. 2003-321546, and Japanese Patent Application Laid-Open No. 2004-281086). In addition, examples of the display method include either a matrix method or a segment method. In addition, matrix display and segment display may coexist on the same panel. In a matrix, display pixels are arranged two-dimensionally, such as in a grid or mosaic shape, and characters or images are displayed as a collection of pixels. The shape and size of the pixels are determined according to the purpose. For example, square pixels with a side of 300㎛ or less are typically used for image and character display on computers, monitors, and televisions, and furthermore, in the case of large displays such as display panels, pixels with a side of the order of millimeters are used. In the case of black and white display, pixels of the same color can be arranged, but in the case of color display, red, green, and blue pixels are displayed in an array. In this case, there are generally delta type and stripe type. The driving method of this matrix can be either a line-sequential driving method or an active matrix. Although line-sequential driving has the advantage of a simple structure, an active matrix can be superior when considering operating characteristics, so this also needs to be used separately depending on the purpose. In segmented mode (type), patterns are formed to display predetermined information and a designated area is illuminated. Examples include time and temperature displays on digital clocks and thermometers, operating status indicators on audio devices and electronic cookers, and panel displays on automobiles. Examples of lighting devices include lighting devices such as indoor lighting, and backlights for liquid crystal displays (see, for example, Japanese Patent Laid-Open No. 2003-257621, Japanese Patent Laid-Open No. 2003-277741, and Japanese Patent Laid-Open No. 2004-119211). Backlights are mainly used to improve the visibility of non-self-luminous display devices, and are used in liquid crystal displays, watches, audio devices, automobile panels, signs, and markings. In particular, when considering the difficulty of making liquid crystal displays, and especially computer-use backlights where thinning is an issue, since conventional methods consist of fluorescent lamps or light guide plates, backlights using organic EL elements are characterized by being thin and lightweight. <2-2. Other organic devices> The polycyclic aromatic compound according to the present invention can be used in the manufacture of organic field effect transistors or organic thin film solar cells, in addition to the organic electroluminescent devices described above. An organic field-effect transistor (OFET) is a transistor that controls current by an electric field generated by a voltage input. It has a gate electrode in addition to a source and drain electrodes. Applying voltage to the gate electrode generates an electric field, allowing the transistor to control current by arbitrarily stopping the flow of electrons (or holes) between the source and drain electrodes. Field-effect transistors are easier to miniaturize than simple transistors (bipolar transistors) and are frequently used as components in integrated circuits. The structure of an organic field effect transistor is typically such that a source electrode and a drain electrode are installed in contact with an organic semiconductor active layer formed using a polycyclic aromatic compound according to the present invention, and a gate electrode is installed with an insulating layer (dielectric layer) in contact with the organic semiconductor active layer interposed therebetween. Examples of the device structure include the structure below. (1) Substrate / gate electrode / insulator layer / source electrode / drain electrode / organic semiconductor active layer (2) Substrate / gate electrode / insulator layer / organic semiconductor active layer / source electrode / drain electrode (3) Substrate / organic semiconductor active layer / source electrode / drain electrode / insulator layer / gate electrode (4) Substrate / source electrode / drain electrode / organic semiconductor active layer / insulator layer / gate electrode An organic field effect transistor configured in this manner can be applied as a pixel driving switching element of an active matrix driving type liquid crystal display or an organic electroluminescence display. An organic thin-film solar cell has a structure in which an anode such as ITO, a hole transport layer, a photoelectric conversion layer, an electron transport layer, and a cathode are laminated on a transparent substrate such as glass. The photoelectric conversion layer has a p-type semiconductor layer on the anode side and an n-type semiconductor layer on the cathode side. The polycyclic aromatic compound according to the present invention can be used as a material for a hole transport layer, a p-type semiconductor layer, an n-type semiconductor layer, and an electron transport layer depending on its physical properties. The polycyclic aromatic compound according to the present invention can function as a hole transport material and an electron transport material in an organic thin-film solar cell. In addition to the above, the organic thin-film solar cell may appropriately include a hole blocking layer, an electron blocking layer, an electron injection layer, a hole injection layer, a smoothing layer, etc. Known materials used in organic thin-film solar cells can be appropriately selected and combined for use in the organic thin-film solar cell. <3. Wavelength conversion material> The polycyclic aromatic compound of the present invention can be used as a wavelength conversion material. Currently, the application of multi-color technology using color conversion is being actively studied for applications such as liquid crystal displays, organic EL displays, and lighting. Color conversion refers to the wavelength conversion of light emitted from a light source into longer wavelength light, for example, converting ultraviolet light or blue light into green or red light. By forming a wavelength conversion material with this color conversion function into a film and combining it with, for example, a blue light source, it becomes possible to extract the three primary colors of blue, green, and red from the blue light source, i.e., to extract white light. By combining a white light source unit comprising a blue light source and a wavelength conversion film with color conversion function, and combining it with a liquid crystal driver and a color filter, the production of a full-color display becomes possible. Furthermore, if a liquid crystal driver is not required, it can be used as a white light source as is, and can be applied as a white light source for LED lighting, for example. Furthermore, by using a blue organic EL element as a light source in combination with a wavelength conversion film that converts blue light into green and red light, it becomes possible to produce a full-color organic EL display without using a metal mask. Furthermore, by using a blue micro LED as a light source in combination with a wavelength conversion film that converts blue light into green and red light, it becomes possible to produce a low-cost full-color micro LED display. [Example] Hereinafter, the present invention will be described in more detail by examples, but the present invention is not limited to these. In the examples, APCI-MS stands for atmospheric pressure chemical ionization mass spectrometry. <<Synthesis Example>> Synthesis Example (1): Synthesis of Compound (1-1) Under a nitrogen atmosphere, intermediate (X-1) (50.0 g), 3,4,5-trichlorotoluene (26.3 g), dichlorobis[di-t-butyl(4-dimethylaminophenyl)phosphino]palladium (Pd-132) (0.910 g) as a palladium catalyst, tBuONa (18.5 g), and toluene (500 ml) were placed in a flask and heated at 120°C for 5 hours. After completion of the reaction, water and ethyl acetate were added to the reaction solution, stirred, and the organic layer was separated and washed with water. Thereafter, the organic layer was concentrated, and the crude product obtained was purified using a silica gel short column (eluent: toluene / heptane = 1 / 4 (volume ratio)), thereby obtaining 54.2 g of intermediate (X-2). Under a nitrogen atmosphere, intermediate (X-2) (30.0 g), intermediate (X-3) (26.9 g), Pd-132 (0.774 g) as a palladium catalyst, tBuONa (7.88 g), and toluene (300 ml) were placed in a flask and heated at 120°C for 3 hours. After completion of the reaction, water and ethyl acetate were added to the reaction solution, stirred, and the organic layer was separated and washed with water. Thereafter, the organic layer was concentrated, and the crude product obtained was purified using a silica gel short column (eluent: toluene / heptane = 1 / 4 (volume ratio)), thereby obtaining 42.2 g of intermediate (Int-1-1). Under a nitrogen atmosphere, a 1.60 M tert-butyllithium pentane solution (29.0 ml) was added to a flask containing the intermediate (Int-1-1) (19.2 g) and tert-butylbenzene (190 ml) at 0°C. After completion of the dropwise addition, the temperature was raised to 70°C and stirred for 0.5 hours, and then low-boiling components were distilled off from the tert-butylbenzene under reduced pressure. After cooling to -50°C, boron tribromide (10.0 g) was added, the temperature was raised to room temperature, and stirred for 0.5 hours. Thereafter, the temperature was cooled again to 0°C, N,N-diisopropylethylamine (5.15 g) was added, and the temperature was stirred at room temperature until the exotherm subsided, and then the temperature was raised to 100°C and heated and stirred for 1 hour. The reaction mixture was cooled to room temperature, and an aqueous sodium acetate solution cooled in an ice bath, followed by ethyl acetate, was added to separate the layers. The organic layer was concentrated and purified using a silica gel short column (eluent: chlorobenzene). The obtained crude product was recrystallized from toluene to obtain 3.69 g of compound (1-1). The production of the target product was confirmed by observing m / z(M+H)=933.71 by APCI-MS. Synthesis Example (2): Synthesis of Compound (1-2) Compound (1-2) was obtained from intermediate (Int-1-2) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1085.86 by APCI-MS. Synthesis Example (3): Synthesis of Compound (1-3) Compound (1-3) was obtained from intermediate (Int-1-3) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1115.90 by APCI-MS. Synthesis Example (4): Synthesis of Compound (1-4) Compound (1-4) was obtained from intermediate (Int-1-4) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1005.80 by APCI-MS. Synthesis Example (5): Synthesis of Compound (1-5) Compound (1-5) was obtained from intermediate (Int-1-5) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=949.73 by APCI-MS. Synthesis Example (6): Synthesis of Compound (1-6) Compound (1-6) was obtained from intermediate (Int-1-6) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1025.76 by APCI-MS. Synthesis Example (7): Synthesis of Compound (1-7) Compound (1-7) was obtained from intermediate (Int-1-7) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1114.79 by APCI-MS. Synthesis Example (8): Synthesis of Compound (1-8) Compound (1-8) was obtained from the intermediate (Int-1-8) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1025.76 by APCI-MS. Synthesis Example (9): Synthesis of Compound (1-9) Compound (1-9) was obtained from intermediate (Int-1-9) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=983.69 by APCI-MS. Synthesis Example (10): Synthesis of Compound (1-10) Compound (1-10) was obtained from the intermediate (Int-1-10) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=961.71 by APCI-MS. Synthesis Example (11): Synthesis of Compound (1-11) Compound (1-11) was obtained from intermediate (Int-1-11) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=907.66 by APCI-MS. Synthesis Example (12): Synthesis of Compound (1-12) Compound (1-12) was obtained from intermediate (Int-1-12) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1017.77 by APCI-MS. Synthesis Example (13): Synthesis of Compound (1-13) Compound (1-13) was obtained from the intermediate (Int-1-13) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=978.84 by APCI-MS. Synthesis Example (14): Synthesis of Compound (1-14) Compound (1-14) was obtained from intermediate (Int-1-14) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1017.77 by APCI-MS. Synthesis Example (15): Synthesis of Compound (1-15) Compound (1-15) was obtained from the intermediate (Int-1-15) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=961.70 by APCI-MS. Synthesis Example (16): Synthesis of Compound (1-16) Compound (1-16) was obtained from the intermediate (Int-1-16) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=825.61 by APCI-MS. Synthesis Example (17): Synthesis of Compound (1-17) Compound (1-17) was obtained from the intermediate (Int-1-17) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=990.67 by APCI-MS. Synthesis Example (18): Synthesis of Compound (1-18) Compound (1-18) was obtained from the intermediate (Int-1-18) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1218.85 by APCI-MS. Synthesis Example (19): Synthesis of Compound (1-19) Compound (1-19) was obtained from intermediate (Int-1-19) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1332.95 by APCI-MS. Synthesis Example (20): Synthesis of Compound (1-20) Compound (1-20) was obtained from intermediate (Int-1-20) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1235.85 by APCI-MS. Synthesis Example (21): Synthesis of Compound (1-21) Compound (1-21) was obtained from intermediate (Int-1-21) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=715.58 by APCI-MS. Synthesis Example (22): Synthesis of Compound (1-22) Compound (1-22) was obtained from intermediate (Int-1-22) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=869.67 by APCI-MS. Synthesis Example (23): Synthesis of Compound (1-23) Compound (1-23) was obtained from intermediate (Int-1-23) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=877.73 by APCI-MS. Synthesis example (24): Synthesis of compound (1-24) Compound (1-24) was obtained from intermediate (Int-1-24) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1190.82 by APCI-MS. Synthesis Example (25): Synthesis of Compound (1-25) Compound (1-25) was obtained from intermediate (Int-1-25) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=732.62 by APCI-MS. Synthesis Example (26): Synthesis of Compound (1-26) Compound (1-26) was obtained from intermediate (Int-1-26) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1042.88 by APCI-MS. Synthesis Example (27): Synthesis of Compound (1-27) Compound (1-27) was obtained from intermediate (Int-1-27) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1007.81 by APCI-MS. Synthesis example (28): Synthesis of compound (1-28) Compound (1-28) was obtained from the intermediate (Int-1-28) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1104.75 by APCI-MS. Synthesis Example (29): Synthesis of Compound (1-29) Compound (1-29) was obtained from intermediate (Int-1-29) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1006.74 by APCI-MS. Synthesis Example (30): Synthesis of Compound (1-30) Compound (1-30) was obtained from intermediate (Int-1-30) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=849.70 by APCI-MS. Synthesis Example (31): Synthesis of Compound (1-31) Compound (1-31) was obtained from intermediate (Int-1-31) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=927.75 by APCI-MS. Synthesis example (32): Synthesis of compound (1-32) Compound (1-32) was obtained from intermediate (Int-1-32) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1142.82 by APCI-MS. Synthesis Example (33): Synthesis of Compound (1-33) Compound (1-33) was obtained from intermediate (Int-1-33) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1044.73 by APCI-MS. Synthesis example (34): Synthesis of compound (1-34) Compound (1-34) was obtained from intermediate (Int-1-34) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1006.62 by APCI-MS. Synthesis example (35): Synthesis of compound (1-35) Compound (1-35) was obtained from intermediate (Int-1-35) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1224.77 by APCI-MS. Synthesis example (36): Synthesis of compound (1-36) Compound (1-36) was obtained from the intermediate (Int-1-36) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1373.85 by APCI-MS. Synthesis Example (37): Synthesis of Compound (1-37) Compound (1-37) was obtained from the intermediate (Int-1-37) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1246.80 by APCI-MS. Synthesis example (38): Synthesis of compound (1-38) Compound (1-38) was obtained from the intermediate (Int-1-38) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=735.51 by APCI-MS. Synthesis example (39): Synthesis of compound (1-39) Compound (1-39) was obtained from intermediate (Int-1-39) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=991.78 by APCI-MS. Synthesis example (40): Synthesis of compound (1-40) Compound (1-40) was obtained from intermediate (Int-1-40) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=888.68 by APCI-MS. Synthesis Example (41): Synthesis of Compound (1-41) Compound (1-41) was obtained from intermediate (Int-1-41) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1206.76 by APCI-MS. Synthesis example (42): Synthesis of compound (1-42) Compound (1-42) was obtained from intermediate (Int-1-42) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=940.71 by APCI-MS. Synthesis example (43): Synthesis of compound (1-43) Compound (1-43) was obtained from intermediate (Int-1-43) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1047.82 by APCI-MS. Synthesis example (44): Synthesis of compound (1-44) Compound (1-44) was obtained from intermediate (Int-1-44) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1023.75 by APCI-MS. Synthesis example (45): Synthesis of compound (1-45) Compound (1-45) was obtained from intermediate (Int-1-45) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1115.70 by APCI-MS. Synthesis example (46): Synthesis of compound (1-46) Compound (1-46) was obtained from intermediate (Int-1-46) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1068.71 by APCI-MS. Synthesis example (47): Synthesis of compound (1-47) Compound (1-47) was obtained from intermediate (Int-1-47) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1032.72 by APCI-MS. Synthesis example (48): Synthesis of compound (1-48) Compound (1-48) was obtained from the intermediate (Int-1-48) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1019.72 by APCI-MS. Synthesis example (49): Synthesis of compound (1-49) Compound (1-49) was obtained from intermediate (Int-1-49) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1236.81 by APCI-MS. Synthesis Example (50): Synthesis of Compound (1-50) Compound (1-50) was obtained from intermediate (Int-1-50) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1176.79 by APCI-MS. Synthesis Example (51): Synthesis of Compound (1-51) Compound (1-51) was obtained from intermediate (Int-1-51) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=931.65 by APCI-MS. Synthesis example (52): Synthesis of compound (1-52) Compound (1-52) was obtained from intermediate (Int-1-52) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=959.68 by APCI-MS. Synthesis example (53): Synthesis of compound (1-53) Compound (1-53) was obtained from intermediate (Int-1-53) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=919.65 by APCI-MS. Synthesis example (54): Synthesis of compound (1-54) Compound (1-54) was obtained from intermediate (Int-1-54) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=975.66 by APCI-MS. Synthesis example (55): Synthesis of compound (1-55) Compound (1-55) was obtained from intermediate (Int-1-55) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=941.67 by APCI-MS. Synthesis example (56): Synthesis of compound (1-56) Compound (1-56) was obtained from intermediate (Int-1-56) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1013.73 by APCI-MS. Synthesis example (57): Synthesis of compound (1-57) Compound (1-57) was obtained from intermediate (Int-1-57) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1051.74 by APCI-MS. Synthesis example (58): Synthesis of compound (1-58) Compound (1-58) was obtained from intermediate (Int-1-58) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1065.76 by APCI-MS. Synthesis Example (59): Synthesis of Compound (1-59) Compound (1-59) was obtained from intermediate (Int-1-59) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1037.73 by APCI-MS. Synthesis example (60): Synthesis of compound (1-60) Compound (1-60) was obtained from intermediate (Int-1-60) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1065.76 by APCI-MS. Synthesis example (61): Synthesis of compound (1-61) Compound (1-61) was obtained from intermediate (Int-1-61) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=955.66 by APCI-MS. Synthesis example (62): Synthesis of compound (1-62) Compound (1-62) was obtained from intermediate (Int-1-62) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=877.61 by APCI-MS. Synthesis example (63): Synthesis of compound (1-63) Compound (1-63) was obtained from intermediate (Int-1-63) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1101.76 by APCI-MS. Synthesis example (64): Synthesis of compound (1-64) Compound (1-64) was obtained from intermediate (Int-1-64) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1116.81 by APCI-MS. Synthesis example (65): Synthesis of compound (1-65) Compound (1-65) was obtained from intermediate (Int-1-65) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1144.84 by APCI-MS. Synthesis example (66): Synthesis of compound (1-66) Compound (1-66) was obtained from intermediate (Int-1-66) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=933.71 by APCI-MS. Synthesis example (67): Synthesis of compound (1-67) Compound (1-67) was obtained from intermediate (Int-1-67) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1075.79 by APCI-MS. Synthesis example (68): Synthesis of compound (1-68) Compound (1-68) was obtained from the intermediate (Int-1-68) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1055.82 by APCI-MS. Synthesis example (69): Synthesis of compound (1-69) Compound (1-69) was obtained from intermediate (Int-1-69) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=901.58 by APCI-MS. Synthesis example (70): Synthesis of compound (1-70) Compound (1-70) was obtained from intermediate (Int-1-70) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1136.74 by APCI-MS. Synthesis example (71): Synthesis of compound (1-71) Compound (1-71) was obtained from intermediate (Int-1-71) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=980.64 by APCI-MS. Synthesis example (72): Synthesis of compound (1-72) Compound (1-72) was obtained from intermediate (Int-1-72) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1056.68 by APCI-MS. Synthesis example (73): Synthesis of compound (1-73) Compound (1-73) was obtained from intermediate (Int-1-73) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1050.67 by APCI-MS. Synthesis example (74): Synthesis of compound (1-74) Compound (1-74) was obtained from intermediate (Int-1-74) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=999.66 by APCI-MS. Synthesis example (75): Synthesis of compound (1-75) Compound (1-75) was obtained from intermediate (Int-1-75) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1101.76 by APCI-MS. Synthesis example (76): Synthesis of compound (1-76) Compound (1-76) was obtained from intermediate (Int-1-76) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1101.76 by APCI-MS. Synthesis example (77): Synthesis of compound (1-77) Compound (1-77) was obtained from intermediate (Int-1-77) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1101.76 by APCI-MS. Synthesis example (78): Synthesis of compound (1-78) Compound (1-78) was obtained from intermediate (Int-1-78) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1157.82 by APCI-MS. Synthesis example (79): Synthesis of compound (1-79) Compound (1-79) was obtained from the intermediate (Int-1-79) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1041.80 by APCI-MS. Synthesis example (80): Synthesis of compound (1-80) Compound (1-80) was obtained from intermediate (Int-1-80) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1041.80 by APCI-MS. Synthesis example (81): Synthesis of compound (1-81) Compound (1-81) was obtained from intermediate (Int-1-81) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1027.79 by APCI-MS. Synthesis example (82): Synthesis of compound (1-82) Compound (1-82) was obtained from intermediate (Int-1-82) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1073.74 by APCI-MS. Synthesis example (83): Synthesis of compound (1-83) Compound (1-83) was obtained from intermediate (Int-1-83) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1061.63 by APCI-MS. Synthesis example (84): Synthesis of compound (1-84) Compound (1-84) was obtained from intermediate (Int-1-84) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1184.81 by APCI-MS. Synthesis Example (85): Synthesis of Compound (1-85) Compound (1-85) was obtained from intermediate (Int-1-85) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1072.53 by APCI-MS. Synthesis example (86): Synthesis of compound (1-86) Compound (1-86) was obtained from intermediate (Int-1-86) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1145.84 by APCI-MS. Synthesis example (87): Synthesis of compound (1-87) Compound (1-87) was obtained from intermediate (Int-1-87) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=931.65 by APCI-MS. Synthesis example (88): Synthesis of compound (1-88) Compound (1-88) was obtained from intermediate (Int-1-88) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1029.66 by APCI-MS. Synthesis Example (89): Synthesis of Compound (1-89) Compound (1-89) was obtained from intermediate (Int-1-89) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1024.61 by APCI-MS. Synthesis example (90): Synthesis of compound (1-90) Compound (1-90) was obtained from intermediate (Int-1-90) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1072.57 by APCI-MS. Synthesis example (91): Synthesis of compound (1-91) Compound (1-91) was obtained from intermediate (Int-1-91) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1038.63 by APCI-MS. Synthesis example (92): Synthesis of compound (1-92) Compound (1-92) was obtained from intermediate (Int-1-92) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1179.82 by APCI-MS. Synthesis example (93): Synthesis of compound (1-93) Compound (1-93) was obtained from intermediate (Int-1-93) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1005.67 by APCI-MS. Synthesis example (94): Synthesis of compound (1-94) Compound (1-94) was obtained from intermediate (Int-1-94) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1003.63 by APCI-MS. Synthesis Example (95): Synthesis of Compound (1-95) Compound (1-95) was obtained from intermediate (Int-1-95) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1048.66 by APCI-MS. Synthesis example (96): Synthesis of compound (1-96) Compound (1-96) was obtained from intermediate (Int-1-96) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1252.72 by APCI-MS. Synthesis Example (97): Synthesis of Compound (1-97) Compound (1-97) was obtained from intermediate (Int-1-97) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1186.67 by APCI-MS. Synthesis example (98): Synthesis of compound (1-98) Compound (1-98) was obtained from the intermediate (Int-1-98) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1065.76 by APCI-MS. Synthesis Example (99): Synthesis of Compound (1-99) Compound (1-99) was obtained from intermediate (Int-1-99) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1067.72 by APCI-MS. Synthesis Example (100): Synthesis of Compound (1-100) Compound (1-100) was obtained from intermediate (Int-1-100) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1091.68 by APCI-MS. Synthesis Example (101): Synthesis of Compound (1-101) Compound (1-101) was obtained from intermediate (Int-1-101) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1057.69 by APCI-MS. Synthesis example (102): Synthesis of compound (1-102) Compound (1-102) was obtained from intermediate (Int-1-102) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1003.65 by APCI-MS. Synthesis Example (103): Synthesis of Compound (1-97) Compound (1-103) was obtained from intermediate (Int-1-103) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1027.71 by APCI-MS. Synthesis example (104): Synthesis of compound (1-104) Compound (1-104) was obtained from intermediate (Int-1-104) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1080.80 by APCI-MS. Synthesis example (105): Synthesis of compound (1-105) Compound (1-105) was obtained from intermediate (Int-1-105) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1024.73 by APCI-MS. Synthesis example (106): Synthesis of compound (1-106) Compound (1-106) was obtained from intermediate (Int-1-106) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1094.69 by APCI-MS. Synthesis example (107): Synthesis of compound (1-107) Compound (1-107) was obtained from intermediate (Int-1-107) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1074.75 by APCI-MS. Synthesis example (108): Synthesis of compound (1-108) Compound (1-108) was obtained from intermediate (Int-1-108) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1114.74 by APCI-MS. Synthesis example (109): Synthesis of compound (1-109) Compound (1-109) was obtained from intermediate (Int-1-109) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=1284.84 by APCI-MS. Synthesis example (110): Synthesis of compound (1-110) Compound (1-110) was obtained from intermediate (Int-1-110) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=901.73 by APCI-MS. Synthesis Example (111): Synthesis of Compound (1-111) Compound (1-111) was obtained from intermediate (Int-1-111) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=929.76 by APCI-MS. Synthesis example (112): Synthesis of compound (1-112) Compound (1-112) was obtained from intermediate (Int-1-112) in the same manner as in Synthesis Example (1). The production of the target product was confirmed by observing m / z(M+H)=904.75 by APCI-MS. <<Fabrication and Evaluation of Deposition-Type Organic EL Devices>> Next, the production and evaluation of an organic EL device using the polycyclic aromatic compound of the present invention are described. <Composition of organic EL devices> An organic EL device was manufactured using the polycyclic aromatic compound of the present invention. The material composition of each layer in the organic EL devices of Examples B1 to B112 and Comparative Example B1 is shown in Table 1 below. Cathode 1 nm / 100 nm LiF / Al Electron transport layer 2 (25 nm) ET-2 + Liq Electron transport layer 1 (5 nm) ET-1 Emitting layer (25 nm) Host (97%): BH Dopant (3%): Compounds described in Table 2 or Table 3 Hole transport layer 2 (10 nm) HT-2 Hole transport layer 1 (45 nm) HT-1 Hole injection layer 2 (5 nm) HAT-CN Hole injection layer 1 (40 nm) HI The chemical structures of “HI”, “HAT-CN”, “HT-1”, “HT-2”, “ET-1”, “ET-2”, “BH”, “Liq”, and “comparative compound (1)” described in Japanese Patent Application Laid-Open No. 2022-065644 in Tables 1, 2, and 3 are shown below. <Element of Example B1> A 26 mm X 28 mm X 0.7 mm glass substrate (manufactured by Optoscience Co., Ltd.) on which ITO, which was formed into a film with a thickness of 180 nm by sputtering and polished to a thickness of 150 nm, was used as a transparent support substrate. This transparent support substrate was fixed to a substrate holder of a commercially available deposition device (manufactured by Showa Vacuum Co., Ltd.), and a molybdenum deposition boat containing HI, HAT-CN, HT-1, HT-2, BH, compound (1-1), ET-1, and ET-2, respectively, and an aluminum nitride deposition boat containing Liq, LiF, and aluminum, respectively, were mounted. The following layers were sequentially formed on the ITO film of a transparent support substrate. The vacuum chamber was 5X10 -4After decompressing to 10 Pa, HI was first heated and deposited to a film thickness of 40 nm, then HAT-CN was heated and deposited to a film thickness of 5 nm, then HT-1 was heated and deposited to a film thickness of 45 nm, and then HT-2 was heated and deposited to a film thickness of 10 nm, thereby forming a hole layer consisting of four layers. Next, BH and compound (1-1) were simultaneously heated and deposited to a film thickness of 25 nm, thereby forming a light-emitting layer. The deposition rate was controlled so that the mass ratio of BH to compound (1-1) was approximately 97:3. In addition, ET-1 was heated and deposited to a film thickness of 5 nm, then ET-2 and Liq were simultaneously heated and deposited to a film thickness of 25 nm, thereby forming an electron layer consisting of two layers. The deposition rate was controlled so that the mass ratio of ET-2 and Liq was approximately 50:50. The deposition rate of each layer was 0.01 to 1 nm / sec. After that, LiF was heated and deposited at a deposition rate of 0.01 to 0.1 nm / sec to obtain a film thickness of 1 nm, and then aluminum was heated and deposited to obtain a film thickness of 100 nm to form a cathode, thereby obtaining an organic EL device. <Elements of Examples B2 to B112 and Comparative Example B1> Organic EL devices of Examples B2 to B112 and Comparative Example B1 were obtained in the same manner as in Example B1, except that each compound listed in Tables 2 to 3 was used as a dopant material instead of compound (1-1). <Evaluation of organic EL characteristics> For the organic EL devices of Examples B1 to B112 and Comparative Example B1, a direct current voltage was applied using the ITO electrode as the anode and the LiF / aluminum electrode as the cathode, and 1000 cd / m 2 The driving voltage, external quantum efficiency, and device lifetime were measured during luminescence. In addition, the device lifetime was 1000 cd / m 2This is the time required to maintain a luminance of 95% or more of the initial luminance by continuously driving at the voltage at the time of emission. The results are shown in Tables 2 and 3. The quantum efficiency of a light-emitting device can be divided into internal quantum efficiency and external quantum efficiency. However, the internal quantum efficiency represents the rate at which external energy injected as electrons (or holes) into the light-emitting layer of the light-emitting device is purely converted into photons. On the other hand, the external quantum efficiency is calculated based on the amount of these photons emitted to the outside of the light-emitting device. Since some of the photons generated in the light-emitting layer are absorbed within the light-emitting device or continue to be reflected and are not emitted to the outside of the light-emitting device, the external quantum efficiency is lower than the internal quantum efficiency. The method for measuring external quantum efficiency is as follows. Using an ADVANTEST voltage / current generator R6144, a voltage is applied so that the device's luminance becomes 1000 cd / ㎡, causing the device to emit light. Using a TOPCON spectroradiometer SR-3AR, the spectral radiance in the visible region is measured perpendicular to the light-emitting surface. Assuming that the light-emitting surface is a completely diffuse surface, the value of the spectral radiance for each wavelength component measured is divided by the wavelength energy and multiplied by π, which is the number of photons at each wavelength. Next, the number of photons in the entire observed wavelength range is integrated to obtain the total number of photons emitted from the device. The number obtained by dividing the applied current value by the small charge is the number of carriers injected into the device, and the number obtained by dividing the total number of photons emitted from the device by the number of carriers injected into the device is the external quantum efficiency. Dopant 1000cd / m 2Characteristics at the time of luminescence Device lifetime (hours) External quantum efficiency (%) Example B1 Compound (1-1) 7.8250 Example B2 Compound (1-2) 8.7332 Example B3 Compound (1-3) 8.5300 Example B4 Compound (1-4) 8.3315 Example B5 Compound (1-5) 8.2292 Example B6 Compound (1-6) 8.5311 Example B7 Compound (1-7) 8.0313 Example B8 Compound (1-8) 8.3316 Example B9 Compound (1-9) 7.4262 Example B10 Compound (1-10) 7.9281 Example B11 Compound (1-11) 7.4269 Example B12 Compound (1-12) 7.7292 Example B13 Compound (1-13) 7.8299 Example B14 Compound (1-14) 7.9291 Example B15 Compound (1-15) 7.6289 Example B16 Compound (1-16) 7.8288 Example B17 Compound (1-17) 9.3369 Example B18 Compound (1-18) 9.5377 Example B19 Compound (1-19) 9.1388 Example B20 Compound (1-20) 8.5322 Example B21 Compound (1-21) 8.3331 Example B22 Compound (1-22) 8.0315 Example B23 Compound (1-23) 8.3309 Example B24 Compound (1-24) 8.5320 Example B25 Compound (1-25) 8.3314 Example B26 Compound (1-26) 8.5308 Example B27 Compound (1-27) 8.3313 Example B28 Compound (1-28) 9.3385 Example B29 Compound (1-29) 9.5369 Example B30 Compound (1-30) 8.2319 Example B31 Compound (1-31) 8.4306 Example B32 Compound (1-32) 8.5322 Example B33 Compound (1-33) 9.5385 Example B34 Compound (1-34) 8.7314 Example B35 Compound (1-35) 8.6321 Example B36 Compound (1-36) 9.7381 Example B37 Compound (1-37) 7.9299 Example B38 Compound (1-38) 7.6297 Example B39 Compound (1-39) 8.7317 Example B40 Compound (1-40) 7.8288 Example B41 Compound (1-41) 7.6280 Example B42 Compound (1-42) 7.6283 Example B43 Compound (1-43) 7.5286 Example B44 Compound (1-44) 7.6288 Example B45 Compound (1-45) 8.7310 Example B46 Compound (1-46) 8.6 308 Example B47 Compound (1-47) 7.8 289 Example B48 Compound (1-48) 7.8 283 Example B49 Compound (1-49) 7.5 286 Example B50 Compound (1-50) 8.7 319 Example B51 Compound (1-51) 8.5 315 Example B52 Compound (1-52) 8.7 308 Example B53 Compound (1-53) 7.8 288 Example B54 Compound (1-54) 7.7 281 Example B55 Compound (1-55) 7.7 291 Example B56 Compound (1-56) 8.7 300 Example B57 Compound (1-57) 8.6307 Example B58 Compound (1-58) 8.7322 Example B59 Compound (1-59) 8.6319 Example B60 Compound (1-60) 8.7312 Example B61 Compound (1-61) 8.6315 Example B62 Compound (1-62) 8.7319 Example B63 Compound (1-63) 8.6309 Example B64 Compound (1-64) 8.7317 Example B65 Compound (1-65) 8.6312 Example B66 Compound (1-66) 8.7322 Example B67 Compound (1-67) 8.6324 Example B68 Compound (1-68) 8.7310 Example B69 Compound (1-69) 8.6307 Example B70 Compound (1-70) 7.7297 Example B71 Compound (1-71) 7.8293 Example B72 Compound (1-72) 7.9294 Example B73 Compound (1-73) 7.8291 Example B74 Compound (1-74) 7.9291 Example B75 Compound (1-75) 8.7315 Example B76 Compound (1-76) 8.6319 Example B77 Compound (1-77) 8.7309 Example B78 Compound (1-78) 8.6317 Example B79 Compound (1-79) 8.7312 Example B80 Compound (1-80) 8.6322 Example B81 Compound (1-81) 8.7324 Example B82 Compound (1-82) 8.6310 Example B83 Compound (1-83) 9.3377 Example B84 Compound (1-84) 9.5369 Example B85 Compound (1-85) 9.1388 Example B86 Compound (1-86) 9.3392 Example B87 Compound (1-87) 8.7322 Example B88 Compound (1-88) 8.6314 Example B89 Compound (1-89) 9.5385 Example B90 Compound (1-90) 8.9322 Example B91 Compound (1-91) 9.3392 Example B92 Compound (1-92) 9.5381 Example B93 Compound (1-93) 8.7317 Example B94 Compound (1-94) 8.4312 Example B95 Compound (1-95) 7.9377 Example B96 Compound (1-96) 9.3369 Example B97 Compound (1-97) 9.5383 Example B98 Compound (1-98) 7.9299 Example B99 Compound (1-99) 7.8292 Example B100 Compound (1-100) 7.9291 Example B101 Compound (1-101) 7.8297 Example B102 Compound (1-102) 7.6296 Example B103 Compound (1-103) 9.1399 Example B104 Compound (1-104) 9.3391 Example B105 Compound (1-105) 9.5377 Example B106 Compound (1-106) 9.3369 Example B107 Compound (1-107) 9.5388 Example B108 Compound (1-108) 9.1380 Example B109 Compound (1-109) 9.3390 Example B110 Compound (1-110) 8.7310 Example B111 Compound (1-111) 8.6319 Example B112 compound (1-112)8.7308. Dopant 1000cd / m 2 Characteristics at the time of luminescence Device lifetime (hours) External quantum efficiency (%) Comparative example B1 Comparative compound (1) 7.3169 The polycyclic aromatic compound of the present invention is useful as a material for organic devices, particularly as a material for a light-emitting layer for forming a light-emitting layer of an organic electroluminescent device. By using the polycyclic aromatic compound of the present invention as a dopant for a light-emitting layer, an organic electroluminescent device with long life and high light emission efficiency can be obtained. [Explanation of symbols] 100 organic electroluminescent devices 101 substrate 102 Bipolar 103 hole injection layer 104 hole transport layer 105 luminescent layer 106 electron transport layer 107 electron injection layer 108 cathode

Claims

A polycyclic aromatic compound having a structure composed of one or two or more structural units represented by formula (1); In equation (1), Ring A, ring B and ring C are each independently a substituted or unsubstituted aryl ring or a substituted or unsubstituted heteroaryl ring, Ar 1 and Ar 2 are each independently hydrogen, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted alkyl, or substituted or unsubstituted cycloalkyl, provided that Ar 1 and Ar 2 At least one of them is a monovalent group represented by the formula (Ar), Among the foods (Ar), * is the bonding position with the nitrogen atom in formula (1), A is hydrogen, deuterium, or a substituent, R g1 and R g2 are each independently hydrogen or a substituent, B 1 and B 2 are each independently an alkyl in which one or more hydrogens are replaced by deuterium, But, A, R g1 and R g2 Two adjacent ones can be combined to form a ring, In the above structure, at least one of the aryl ring or heteroaryl ring may be condensed with at least one cycloalkane, the cycloalkane may have a substituent, and at least one -CH2- among the cycloalkanes may be substituted with -O-. In the above structure, one or more hydrogens may be replaced with deuterium, and one or more nitrogens may be nitrogen-15( 15 N) may be substituted, and one or more sulfurs may be sulfur-33( 33 S), Hwang-34( 34 S) or Hwang-36( 36 S) may be substituted, and one or more oxygens may be oxygen-17( 17 O) or oxygen-18( 18 O) may be substituted, and one or more carbons may be carbon-13( 13 C) may be substituted, and one or more borons are boron-11( 11 Even if it is replaced with B) It works. In the first paragraph, A polycyclic aromatic compound having a structure composed of one or two or more structural units represented by formula (1-A) or formula (1-B); Ar 1 and Ar 2 Ar in equation (1) 1 and Ar 2 are identical to each other, Among equations (1-A) and (1-B), R 1 Inland R 11 are each independently hydrogen or a substituent, R 1 Inland R 11 Among them, two adjacent ones on one benzene ring may be combined with each other to form a substituted or unsubstituted aryl ring or a substituted or unsubstituted heteroaryl ring together with the benzene ring. In equation (1-B), X is, >O, >NR NX , >C(-R CX )2, >Si(-R IX )2, >S or >Se, and R NX , R CX and R IX are each independently hydrogen, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted alkyl, or substituted or unsubstituted cycloalkyl, and two R CX They may be combined with each other to form a ring, and two R IX They may be combined with each other to form a ring, In the above structure, at least one of the aryl ring or heteroaryl ring may be condensed with at least one cycloalkane, and the cycloalkane may be substituted with at least one substituent, and at least one -CH2- among the cycloalkane may be replaced with -O-. In the above structure, one or more hydrogens may be replaced with deuterium, and one or more nitrogens may be nitrogen-15( 15 N) may be substituted, and one or more sulfurs may be sulfur-33( 33 S), Hwang-34( 34 S) or Hwang-36( 36 S) may be substituted, and one or more oxygens may be oxygen-17( 17 O) or oxygen-18( 18 O) may be substituted, and one or more carbons may be carbon-13( 13 C) may be substituted, and one or more borons are boron-11( 11 Even if it is replaced with B) It works. In the first paragraph, A polycyclic aromatic compound represented by the following formula (Ar-1) wherein the group represented by the formula (Ar) is a group; Among the foods (Ar-1), * indicates the bonding position with the nitrogen atom in formula (1), A is the same as A in formula (Ar), and D is deuterium. In the first paragraph, A polycyclic aromatic compound wherein A is substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl. In the first paragraph, A polycyclic aromatic compound, wherein the group represented by the formula (Ar) is a group represented by the formula (Ar-2) or formula (Ar-3); In formula (Ar-2) and formula (Ar-3), * indicates the bonding position with the nitrogen atom of formula (1), Me is methyl, and D is deuterium. In the first paragraph, A polycyclic aromatic compound, wherein A is independently one selected from the group consisting of groups represented by formulas (A-1) to (A-37); Among the above formulas (A-1) to (A-37), # is a bonding position with a carbon atom of formula (Ar), and one or more hydrogens of each ring may be independently substituted with deuterium, substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted cycloalkyl or substituted silyl, and two adjacent substituted or unsubstituted alkenyls of each ring may be bonded to each other to form a substituted or unsubstituted aryl ring or a substituted or unsubstituted heteroaryl ring together with the ring. Z is >O, >NR NX , >C(-R CX )2, >Si(-R IX )2, >S or >Se, and R NX , R CX and R IX are each independently hydrogen, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted alkyl, or substituted or unsubstituted cycloalkyl, and two R CX can be combined with each other to form a ring, and two R IX They can be combined with each other to form a ring, Me stands for methyl, tBu stands for t-butyl, tAm stands for t-amyl, and D stands for deuterium. In the first paragraph, Ar 1 and Ar 2 A polycyclic aromatic compound, each independently represented by a monovalent group (Ar). In the first paragraph, A polycyclic aromatic compound represented by any one of the following formulas: In the formula, Me represents methyl, tBu represents t-butyl, tAm represents t-amyl, and D represents deuterium. An organic electroluminescent device comprising a pair of electrodes consisting of an anode and a cathode and a light-emitting layer disposed between the pair of electrodes, wherein the light-emitting layer contains a polycyclic aromatic compound according to any one of claims 1 to 8. In paragraph 9, An organic electroluminescent device, wherein the light-emitting layer comprises a host and the polycyclic aromatic compound as a dopant. In Article 10, An organic electroluminescent device, wherein the host is an anthracene compound, a fluorene compound, a pyrene compound or a dibenzochrycene compound. A display device or lighting device comprising the organic electroluminescent element described in Article 9.

Images