Aromatic compound and organic electroluminescent device thereof

Abstract

The invention belongs to the technical field of organic photoelectric materials, and particularly relates to an aromatic compound and an organic electroluminescent device thereof. Benzene or aza-benzene is used as a center and is respectively connected with three groups, one group is dibenzofuran / thiophene or fused furan / thiophene, and the other group is linear fused aryl formed by fusing benzene or aza-benzene. According to the aromatic compound disclosed by the invention, molecules have relatively regular arrangement, so that the molecules have very good light transmittance and film-forming property, and the aromatic compound can be used as a covering layer to be applied to an OLED (Organic Light Emitting Diode) device, so that the luminous efficiency of the device can be improved. Meanwhile, the aromatic compound provided by the invention is used as an electron transport material or a main body material, and can also improve the performance of an OLED (Organic Light Emitting Diode) device.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of organic optoelectronic materials, and particularly relates to an aromatic compound and an organic electroluminescent device thereof. BACKGROUND

[0002] An organic light emitting diode (OLED) has a self-luminous characteristic, and also has many advantages over other display technologies, such as high luminance and efficiency, wide viewing angle, fast response, high driving voltage, wide material selection range, flexibility, etc., which perfectly meet the requirements of high definition, high quality and high portability. OLEDs have been widely used in display and lighting fields, and are one of the display and lighting technologies with the most development prospects in the future.

[0003] An OLED device adopts a classic “sandwich” structure, which is composed of a cathode, an anode and a light-emitting layer sandwiched between the two electrodes. The light-emitting mechanism is as follows: after a working voltage is applied between the two electrodes, holes are injected from the anode and electrons are injected from the cathode, and the two are recombined in the light-emitting layer to generate excitons and release energy to emit light. However, due to the light waveguide and plasmonic effects, most of the photons generated by the light-emitting layer cannot be emitted out of the device, so a cover layer is introduced above the cathode to form a microcavity effect with the anode, which can improve the light extraction efficiency. The CPL material needs to meet the requirements of high glass transition temperature, good film-forming property, high refractive index in the visible light range, and orderly molecular orientation in the thin film, and these characteristics can effectively adjust the optical interference distance, suppress external light reflection, reduce the surface plasmonic effect, thereby improving the light extraction efficiency of the device.

[0004] In order to improve the light-emitting efficiency and color purity of OLEDs and prolong the service life, it is increasingly important to deeply research and design and develop new cover layer materials. SUMMARY

[0005] To solve the above technical problems, the application provides an aromatic compound having a structure shown in formula (I):

[0006]

[0007] X is selected from O or S;

[0008] ring A and ring B are independently selected from one of a substituted or unsubstituted C6-C30 aromatic ring and a substituted or unsubstituted C3-C30 heteroaromatic ring;

[0009] Ar1is selected from the group consisting of a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C3-C30 heteroaryl group, a substituted or unsubstituted C6-C30 aryl ring fused with a substituted or unsubstituted C3-C7 aliphatic ring, a substituted or unsubstituted C3-C30 heteroaryl ring fused with a substituted or unsubstituted C3-C7 aliphatic ring, a combination thereof, and Ar1is not selected from a substituted or unsubstituted pyridyl group, a substituted or unsubstituted pyrimidyl group, a substituted or unsubstituted pyrazinyl group, a substituted or unsubstituted pyridazinyl group, a substituted or unsubstituted triazinyl group;

[0010] Ar2is selected from the group consisting of:

[0011]

[0012] each occurrence of u is the same or different, selected from N or CR1, and at most one u is selected from N;

[0013] each occurrence of v is the same or different, selected from N or CR2; when three v are simultaneously selected from N, Ar2cannot be selected from

[0014] each occurrence of R1is the same or different, selected from a hydrogen atom; a deuterium atom; a tritium atom; a halogen atom; a cyano group; a substituted or unsubstituted C1-C12 alkyl group; a substituted or unsubstituted C3-C12 cycloalkyl group; a substituted or unsubstituted silyl group; a substituted or unsubstituted C6-C30 aryl group substituted with one or more of a deuterium atom, a tritium atom, a halogen atom, a cyano group, a substituted or unsubstituted C1-C12 alkyl group, a substituted or unsubstituted C3-C12 cycloalkyl group, a substituted or unsubstituted silyl group; a monovalent group of a substituted or unsubstituted C6-C30 aryl ring fused with a C3-C7 aliphatic ring substituted with one or more of a deuterium atom, a tritium atom, a halogen atom, a cyano group, a substituted or unsubstituted C1-C12 alkyl group, a substituted or unsubstituted C3-C12 cycloalkyl group, a substituted or unsubstituted silyl group; a substituted or unsubstituted C3-C30 heteroaryl group substituted with one or more of a deuterium atom, a tritium atom, a halogen atom, a cyano group, a substituted or unsubstituted C1-C12 alkyl group, a substituted or unsubstituted C3-C12 cycloalkyl group, a substituted or unsubstituted silyl group; a monovalent group of a substituted or unsubstituted C3-C30 heteroaryl ring fused with a C3-C7 aliphatic ring substituted with one or more of a deuterium atom, a tritium atom, a halogen atom, a cyano group, a substituted or unsubstituted C1-C12 alkyl group, a substituted or unsubstituted C3-C12 cycloalkyl group, a substituted or unsubstituted silyl group;

[0015] R2is, on each occurrence, identically or differently, selected from the group consisting of a hydrogen atom, a deuterium atom, a tritium atom, a halogen atom, a cyano group, a substituted or unsubstituted C1-C12 alkyl group, a substituted or unsubstituted C3-C12 cycloalkyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C3-C30 heteroaryl group, a substituted or unsubstituted C6-C30 aryl ring-fused one-valent group of a substituted or unsubstituted C3-C7 alicyclic ring, a substituted or unsubstituted C3-C30 heteroaryl ring-fused one-valent group of a substituted or unsubstituted C3-C7 alicyclic ring, a combination thereof;

[0016] L1, L2, L3are independently selected from the group consisting of a single bond, a substituted or unsubstituted C6-C30 arylene group, a substituted or unsubstituted C3-C30 heteroarylene group, a substituted or unsubstituted C6-C30 aryl ring-fused divalent group of a substituted or unsubstituted C3-C7 alicyclic ring, a substituted or unsubstituted C3-C30 heteroaryl ring-fused divalent group of a substituted or unsubstituted C3-C7 alicyclic ring, a combination thereof;

[0017] a substituent of L1, L2, L3is, on each occurrence, identically or differently, selected from the group consisting of a deuterium atom, a tritium atom, a halogen atom, a cyano group, a C1-C12 alkyl group, a C3-C12 cycloalkyl group, a substituted or unsubstituted silyl group.

[0018] The present application also provides an organic electroluminescent device comprising a cathode, an anode, an organic layer, wherein the organic layer is located between the cathode and the anode, and the organic layer comprises a hole transport region, a light-emitting layer, and an electron transport region, and the electron transport region comprises the aromatic compound of the present application.

[0019] The present application also provides an organic electroluminescent device comprising a cathode, an anode, an organic layer, wherein the organic layer is located between the cathode and the anode, and the organic layer comprises a hole transport region, a light-emitting layer, and an electron transport region, and the light-emitting layer comprises a host material and a dopant material, and the host material comprises the aromatic compound of the present application.

[0020] The present application also provides an organic electroluminescent device comprising a cathode, an anode, an organic layer, and a capping layer, wherein the capping layer comprises the aromatic compound of the present application.

[0021] Advantages:

[0022] The present application takes benzene or azabenzene as the center, and connects three groups, one of which is dibenzofuran / thiophene or fused furan / thiophene, and the other is a linear fused aryl group fused by benzene or azabenzene. The aromatic compound described in the present application has a regular arrangement between molecules, so that the molecules have good light transmittance and film-forming property, and can be applied to OLED devices as a cover layer to improve the light-emitting efficiency of the device. At the same time, the aromatic compound described in the present application can also improve the performance of OLED devices as an electron transport material or a host material. DETAILED DESCRIPTION

[0023] The technical solutions of specific embodiments of the present application will be described below. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0024] In the compounds of the present application, any atom not specified as a particular isotope includes any stable isotope of that atom, and includes atoms in both their natural isotopic abundance and non-natural abundance. By way of example, every hydrogen atom of a naturally occurring compound contains about 0.0156 atomic % deuterium.

[0025] In the present application, the use of "H" and "hydrogen atom" means that the hydrogen atom in the chemical structure contains no more than the natural abundance of deuterium or tritium atoms, for example, no more than 0.0156 atomic % of deuterium. "D" and "deuterium atom" refer to deuterium content with an abundance above natural abundance, for example, any value above 0.1 atomic %, above 1 atomic %, above 10 atomic %, for example, about 95 atomic % of deuterium. "T" and "tritium atom" refer to tritium content with an abundance above natural abundance, for example, any value above 0.1 atomic %, above 1 atomic %, above 10 atomic %, for example, about 95 atomic % of tritium. In the present application, the omission of the hydrogen drawn indicates "H" or "hydrogen atom".

[0026] The halogen atom in the present application refers to fluorine atom, chlorine atom, bromine atom and iodine atom.

[0027] The "silyl group" in the present application refers to — SiH3 group, and the "substituted or unsubstituted silyl group" refers to one or more H on the silyl group being substituted or unsubstituted by a substituent. The "substituted or unsubstituted silyl group" can be represented by — Si(R k )3, wherein each R kidentically or differently selected from the group consisting of hydrogen, deuterium, a substituted or unsubstituted C1-C30 alkyl group, a substituted or unsubstituted C3-C30 cycloalkyl group, a substituted or unsubstituted C6-C60 aryl group. The number of carbon atoms of the alkyl group is preferably 1 to 20, preferably 1 to 15, more preferably 1 to 10, and most preferably 1 to 8. The number of carbon atoms of the cycloalkyl group is preferably 3 to 20, preferably 3 to 15, more preferably 3 to 10, and most preferably 3 to 7. The number of carbon atoms of the aryl group is preferably 6 to 20, preferably 6 to 13, more preferably 6 to 12, and most preferably 6 to 10. Preferably, each R k identically or differently selected from the group consisting of hydrogen, deuterium, a substituted or unsubstituted C1-C30 alkyl group, a substituted or unsubstituted C3-C30 cycloalkyl group, a substituted or unsubstituted C6-C60 aryl group. The number of carbon atoms of the alkyl group is preferably 1 to 20, preferably 1 to 15, more preferably 1 to 10, and most preferably 1 to 8. The number of carbon atoms of the cycloalkyl group is preferably 3 to 20, preferably 3 to 15, more preferably 3 to 10, and most preferably 3 to 7. The number of carbon atoms of the aryl group is preferably 6 to 20, preferably 6 to 13, more preferably 6 to 12, and most preferably 6 to 10. Preferably, each R k identically or differently selected from the group consisting of hydrogen, deuterium, a substituted or unsubstituted C1-C30 alkyl group, a substituted or unsubstituted C3-C30 cycloalkyl group, a substituted or unsubstituted C6-C60 aryl group. The number of carbon atoms of the alkyl group is preferably 1 to 20, preferably 1 to 15, more preferably 1 to 10, and most preferably 1 to 8. The number of carbon atoms of the cycloalkyl group is preferably 3 to 20, preferably 3 to 15, more preferably 3 to 10, and most preferably 3 to 7. The number of carbon atoms of the aryl group is preferably 6 to 20, preferably 6 to 13, more preferably 6 to 12, and most preferably 6 to 10. Preferably, each R

[0028] The alkyl group according to the present application refers to a hydrocarbon group formed by removing one hydrogen atom from an alkane molecule, which can be a straight-chain alkyl group, a branched-chain alkyl group, preferably has 1 to 15 carbon atoms, more preferably 1 to 12 carbon atoms, and particularly preferably 1 to 6 carbon atoms. The straight-chain alkyl group includes a methyl group, an ethyl group, a n-propyl group, a n-butyl group, a n-pentyl group, a n-hexyl group, a n-heptyl group, a n-octyl group, a n-nonyl group, a n-decyl group, a undecyl group, a dodecyl group, and the like, but is not limited thereto; the branched-chain alkyl group includes an isopropyl group, an isobutyl group, a sec-butyl group, a tert-butyl group, isomeric groups of the n-pentyl group, isomeric groups of the n-hexyl group, isomeric groups of the n-heptyl group, isomeric groups of the n-octyl group, isomeric groups of the n-nonyl group, isomeric groups of the n-decyl group, and the like, but is not limited thereto. The above alkyl group is preferably a methyl group, an ethyl group, a n-propyl group, an isopropyl group, a n-butyl group, an isobutyl group, a sec-butyl group, a tert-butyl group.

[0029] The cycloalkyl group according to the present application refers to a hydrocarbon group formed by removing one hydrogen atom from a cycloalkane molecule, which preferably has 3 to 15 carbon atoms, more preferably 3 to 12 carbon atoms, and particularly preferably 5 to 10 carbon atoms. Examples can include a cyclopropane group, a cyclobutane group, a cyclopentane group, a cyclohexane group, a cycloheptane group, an adamantane group, a norbornane group, and the like, but are not limited thereto. The above cycloalkyl group is preferably a cyclopentane group, a cyclohexane group, a 1-adamantane group, a 2-adamantane group, a norbornane group.

[0030] The cycloalkenyl group according to the present application refers to a hydrocarbon group formed by removing one hydrogen atom from a cycloalkene molecule, which preferably has 3 to 15 carbon atoms, more preferably 3 to 12 carbon atoms, and particularly preferably 5 to 10 carbon atoms. Examples can include a cyclopropene group, a cyclobutene group, a cyclopentene group, a cyclohexene group, a cycloheptene group, and the like, but are not limited thereto. The above cycloalkenyl group is preferably a cyclopentene group, a cyclohexene group.

[0031] The heterocycloalkyl group according to the present application refers to a group formed by removing one hydrogen atom from a heterocycle molecule in which an atom constituting a ring is at least one heteroatom other than a carbon atom, and the heteroatom includes a nitrogen atom, an oxygen atom, a sulfur atom, a silicon atom, a selenium atom, a phosphorus atom, and the like, and is preferably a nitrogen atom, an oxygen atom, a sulfur atom. It preferably contains 1 to 3 heteroatoms, more preferably 1 to 2 heteroatoms, and particularly preferably 1 heteroatom. It preferably has 3 to 15 ring atoms, more preferably 3 to 12 ring atoms, and particularly preferably 5 to 6 ring atoms. Examples can include an epoxyethane group, a cycloalkyl group, a propylene group, a tetrahydropyrrole group, a piperidine group, a morpholine group, a thiomorpholine group, a piperazine group, and the like, but are not limited thereto. The above heterocycloalkyl group is preferably a tetrahydropyrrole group, a piperidine group, a morpholine group, a thiomorpholine group, a piperazine group.

[0032] The aryl group according to the present application refers to a group of radicals left after removing one hydrogen atom from the aromatic nucleus carbon of an aromatic compound molecule, which can be a monocyclic aryl group, a polycyclic aryl group, a fused ring aryl group, preferably having 6 to 25 carbon atoms, more preferably 6 to 20 carbon atoms, particularly preferably 6 to 14 carbon atoms, and most preferably 6 to 12 carbon atoms. The monocyclic aryl group refers to an aryl group having only one aromatic ring in the molecule, for example, a phenyl group, but is not limited thereto; the polycyclic aryl group refers to an aryl group having two or more than two independent aromatic rings in the molecule, for example, a biphenyl group, a terphenyl group, but is not limited thereto; and the fused ring aryl group refers to an aryl group having two or more than two aromatic rings in the molecule and being fused to each other by sharing two adjacent carbon atoms, for example, a naphthyl group, an anthryl group, a phenanthryl group, a pyrenyl group, a perylenyl group, a fluorenyl group, a benzofluorenyl group, a triphenylenyl group, a fluoranthenyl group, a 9,9-dimethylfluorenyl group, a 9,9-diphenylfluorenyl group, a spirobifluorenyl group, a spiro-cyclopentyl-fluorenyl group, a spiro-cyclohexyl-fluorenyl group, a spiro-adamantyl-fluorenyl group, a spiro-cyclopentenyl-fluorenyl group, a spiro-cyclohexenyl-fluorenyl group, etc., but is not limited thereto. The aryl group is preferably a phenyl group, a biphenyl group, a terphenyl group, a 1-naphthyl group, a 2-naphthyl group, a 9,9-dimethylfluorenyl group, a 9,9-diphenylfluorenyl group, a spirobifluorenyl group, a spiro-cyclopentyl-fluorenyl group, a spiro-cyclohexyl-fluorenyl group, a spiro-adamantyl-fluorenyl group, a spiro-cyclopentenyl-fluorenyl group, a spiro-cyclohexenyl-fluorenyl group.

[0033] The heteroaryl group according to the present application refers to a group of radicals obtained by replacing one or more aromatic nucleus carbon atoms in an aryl group with a heteroatom, including but not limited to an oxygen atom, a sulfur atom, a nitrogen atom, a silicon atom, a selenium atom, or a phosphorus atom, preferably having 1 to 25 carbon atoms, more preferably 2 to 20 carbon atoms, particularly preferably 3 to 15 carbon atoms, and most preferably 3 to 12 carbon atoms, and the connecting site of the heteroaryl group can be on a ring-forming carbon atom or on a ring-forming nitrogen atom. The heteroaryl group can be a monocyclic heteroaryl group, a polycyclic heteroaryl group, or a fused ring heteroaryl group. The monocyclic heteroaryl group includes a furanyl group, a thiophenyl group, a pyrrolyl group, an imidazolyl group, a pyridyl group, a pyrimidinyl group, etc., but is not limited thereto; the polycyclic heteroaryl group includes a phenylfuranyl group, a phenylthiophenyl group, etc., but is not limited thereto; and the fused ring heteroaryl group includes a benzothiophenyl group, a benzofuranyl group, an indolyl group, a benzoxazolyl group, a benzimidazolyl group, a benzothiazolyl group, a dibenzofuranyl group, a dibenzodibenzofuranyl group, a dibenzothiophenyl group, a dibenzodibenzothiophenyl group, a carbazolyl group, a benzocarbazolyl group, an acridyl group, a 9,10-dihydroacridyl group, a phenoxazinyl group, a phenothiazinyl group, a phenoxathiinyl group, a quinolyl group, an isoquinolyl group, a quinoxalyl group, a quinazolyl group, etc., but is not limited thereto. The heteroaryl group is preferably a benzothiophenyl group, a benzofuranyl group, an indolyl group, a benzoxazolyl group, a benzimidazolyl group, a benzothiazolyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a carbazolyl group, a pyridyl group.

[0034] The monovalent group of the present application, which is a fused aromatic ring and aliphatic ring, means a general term of a monovalent group which is obtained by removing one hydrogen atom from a fused aromatic ring and aliphatic ring. The aromatic ring preferably has 6 to 25 carbon atoms, more preferably 6 to 20 carbon atoms, particularly preferably 6 to 14 carbon atoms, most preferably 6 to 12 carbon atoms, and can include benzene, naphthalene, anthracene, phenanthrene, etc., but is not limited thereto. The aliphatic ring preferably has 3 to 9 carbon atoms, more preferably 5 to 7 carbon atoms, and can include cyclopropane, cyclobutane, cyclopentane, cyclohexane, cycloheptane, cyclopropene, cyclobutene, cyclopentene, cyclohexene, cycloheptene, cyclopropyne, cyclobutyne, cyclopentyne, cyclohexyne, cycloheptyne. Preferably, examples of the monovalent group of the fused aliphatic ring and aromatic ring can include benzocyclopropyl, benzocyclobutyl, benzocyclopentyl, benzocyclohexyl, benzocycloheptyl, benzocyclopentenyl, benzocyclohexenyl, benzocycloheptenyl, naphthocyclopropyl, naphthocyclobutyl, naphthocyclopentyl, naphthocyclohexyl, etc., but are not limited thereto.

[0035] The monovalent group of the present application, which is a fused heteroaromatic ring and aliphatic ring, means a general term of a monovalent group which is obtained by removing one hydrogen atom from a fused heteroaromatic ring and aliphatic ring. The heteroatom includes, but is not limited to, oxygen, sulfur, nitrogen, silicon, selenium, or phosphorus atom, and preferably has 1 to 25 carbon atoms, more preferably 2 to 20 carbon atoms, particularly preferably 3 to 15 carbon atoms, most preferably 3 to 12 carbon atoms, and can include furanyl, thienyl, pyrrolyl, imidazolyl, pyridyl, pyrimidine, benzothienyl, benzofuranyl, indolyl, benzoxazolyl, benzimidazolyl, benzothiazolyl, dibenzofuranyl, dibenzofuranyl, dibenzothienyl, dibenzothienyl, carbazolyl, benzocarbazolyl, acridinyl, 9,10-dihydroacridinyl, phenoxazinyl, phenothiazinyl, phenoxathiazinyl, quinolyl, isoquinolyl, quinoxalyl, quinazolyl, etc., but is not limited thereto. The aliphatic ring preferably has 3 to 9 carbon atoms, more preferably 5 to 7 carbon atoms, and can include cyclopropane, cyclobutane, cyclopentane, cyclohexane, cycloheptane, cyclopropene, cyclobutene, cyclopentene, cyclohexene, cycloheptene, cyclopropyne, cyclobutyne, cyclopentyne, cyclohexyne, cycloheptyne. Preferably, examples of the monovalent group of the fused aliphatic ring and heteroaromatic ring can include pyridinocyclobutyl, pyridinocyclopentyl, pyridinocyclohexyl, pyridinocyclopentenyl, pyridinocyclohexenyl, pyrimidinocyclopentyl, pyrimidinocyclohexyl, etc., but are not limited thereto.

[0036] The arylene group of the present application means an aryl group having two bonding sites, i.e., a divalent group. As to which the above provided description of aryl group can be applied, except that the arylene group is a divalent group.

[0037] The arycycloalkyl group according to the present application means a group in which an aryl group is fused with a cycloalkyl group, i.e., a monovalent group. As for it, the description provided above for the arycycloalkyl group can be applied, except that the arycycloalkyl group is a monovalent group.

[0038] The arycycloalkyl group according to the present application means a group in which an aryl group is fused with a cycloalkyl group, i.e., a monovalent group. As for it, the description provided above for the arycycloalkyl group can be applied, except that the arycycloalkyl group is a monovalent group.

[0039] The arycycloalkyl group according to the present application means a group in which an aryl group is fused with a cycloalkyl group, i.e., a monovalent group. As for it, the description provided above for the arycycloalkyl group can be applied, except that the arycycloalkyl group is a monovalent group.

[0040] The "substituted" according to the present application means that a hydrogen atom in a certain functional group is replaced with another atom or functional group (i.e., a substituent), and the position of substitution is not limited as long as it is a position where a hydrogen atom is replaced, and when two or more are substituted, two or more substituents can be the same as or different from each other.

[0041] The "substituted or unsubstituted" according to the present application means unsubstituted or substituted with one or more substituents selected from the group consisting of a deuterium atom, a tritium atom, a halogen, an amino group, a cyano group, a nitro group, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C3 to C30 cycloalkyl group, a substituted or unsubstituted C3 to C30 cycloalkenyl group, a substituted or unsubstituted C3 to C30 heterocycloalkyl group, a substituted or unsubstituted C6 to C60 aryl group, a substituted or unsubstituted C6 to C60 aryloxy group, a substituted or unsubstituted C2 to C60 heteroaryl group, a substituted or unsubstituted silyl group, preferably a deuterium atom, a halogen, a cyano group, a nitro group, a C1 to C12 alkyl group, a C3 to C12 cycloalkyl group, a C3 to C12 cycloalkenyl group, a C3 to C12 heterocycloalkyl group, a C6 to C30 aryl group, a C2 to C30 heteroaryl group, a substituted or unsubstituted silyl group, in the case of being substituted with a plurality of substituents, the plurality of substituents are the same as or different from each other; preferably, means unsubstituted or substituted with one or more substituents selected from the group consisting of a deuterium atom, a fluorine atom, a cyano group, a methyl group, a trifluoromethyl group, a deuterated methyl group, an ethyl group, an n-propyl group, an iso-propyl group, a deuterated iso-propyl group, an n-butyl group, an iso-butyl group, a sec-butyl group, a tert-butyl group, a deuterated tert-butyl group, a cyclopropane group, a methyl-substituted cyclopropane group, an ethyl-substituted cyclopropane group, a cyclobutane group, a methyl-substituted cyclobutane group, an ethyl-substituted cyclobutane group, a cyclopentane group, a methyl-substituted cyclopentane group, an ethyl-substituted cyclopentane group, a cyclohexane group, a methyl-substituted cyclohexane group, an ethyl-substituted cyclohexane group, an n-propyl-substituted cyclohexane group, an n-butyl-substituted cyclohexane group, a cyclohexane-substituted cyclohexane group, a cycloheptane group, a cyclopentenyl group, a cyclohexenyl group, a cycloheptenyl group, an adamantane group, a methyl-substituted adamantane group, an ethyl-substituted adamantane group, a norbornane group, a methyl-substituted norbornane group, an ethyl-substituted norbornane group, a tetrahydropyrrole group, a piperidine group, a morpholine group, a thiomorpholine group, a methyl-substituted piperazine group, an ethyl-substituted piperazine group, a phenyl-substituted piperazine group, a naphthyl-substituted piperazine group, a phenyl group, a deuterated phenyl group, a naphthyl group, a deuterated naphthyl group, an anthracene group, a deuterated anthracene group, a phenanthrene group, a deuterated phenanthrene group, a triphenylene group, a deuterated triphenylene group, a pyrene group, a 9,9-dimethylfluorene group, a 9,9-diphenylfluorene group, a spirobifluorene group, a spiro-cyclopentyl-fluorene group, a spiro-cyclohexyl-fluorene group, a spiro-adamantyl-fluorene group, a spiro-cyclopentenyl-fluorene group, a spiro-cyclohexenyl-fluorene group, an N-phenylcarbazole group, a benzofuran group, a benzothiophene group, an indole group, a dibenzofuran group, a benzo-dibenzofuran group, a dibenzothiophene group, a benzo-dibenzothiophene group, a benzoxazole group, a benzothiazole group, a pyridine group, a pyrimidine group, a quinoline group, an isoquinoline group, a quinazoline group, a quinoxaline group, a trimethylsilyl group, a triphenylsilyl group, in the case of being substituted with a plurality of substituents, the plurality of substituents are the same as or different from each other, and adjacent two substituents can be linked to form a ring.

[0042] In the present specification, when the position of a substituent group or a bonding site on a ring is not fixed, it means that it can be bonded to any one of alternative sites of the ring. For example, may mean may mean may mean and so on.

[0043] In the present specification, when a substituent group or a bonding site is on a bond that extends through two or more rings, it means that it can be bonded to any one of the two or more rings, specifically, to any one of the corresponding alternative sites of the rings. For example, may mean may mean may mean and so on.

[0044] The ring structure formed by the connection described in the present application (for example, a saturated or unsaturated C3-C10 carbon ring, a substituted or unsubstituted saturated or unsaturated C3-C6 aliphatic ring) means that each group is connected to each other by a chemical bond, and optionally forms a double bond / triple bond, and can constitute an aromatic group, as exemplified below:

[0045]

[0046] In the present application, the ring formed by the connection can be an aromatic ring system, an aliphatic ring system, or a ring system formed by the fusion of both, and the ring formed by the connection can be a three-membered ring, a four-membered ring, a five-membered ring, a six-membered ring, a spiro ring, or a fused ring, for example, benzene, naphthalene, indene, cyclopentene, cyclopentane, cyclopentane benzene, cyclohexene, cyclohexane, cyclohexane benzene, pyridine, quinoline, isoquinoline, benzofuran, benzothiophene, dibenzofuran, dibenzothiophene, phenanthrene, or pyrene, but is not limited thereto.

[0047] In the present specification, "at least one" includes one, two, three, four, five, six, seven, eight, or more.

[0048] The layer described in the present application "on" another layer or electrode can be interpreted as directly on the other layer or electrode, or other layer structures can exist in between.

[0049] The layer described in the present application "between" two layers, two electrodes, or a layer and an electrode can be interpreted as the only layer structure between the two, or one or more layer structures can exist between the two.

[0050] The present application provides an aromatic compound having a structure represented by Formula (I):

[0051]

[0052] wherein X is selected from O or S;

[0053] ring A, ring B are independently selected from one of substituted or unsubstituted C6-C30 aryl ring, substituted or unsubstituted C3-C30 heteroaryl ring;

[0054] Ar1 is selected from one of substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C3-C30 heteroaryl, substituted or unsubstituted C6-C30 aryl ring fused with substituted or unsubstituted C3-C7 aliphatic ring, substituted or unsubstituted C3-C30 heteroaryl ring fused with substituted or unsubstituted C3-C7 aliphatic ring, combination thereof, and Ar1 is not selected from substituted or unsubstituted pyridyl, substituted or unsubstituted pyrimidyl, substituted or unsubstituted pyrazinyl, substituted or unsubstituted pyridazinyl, substituted or unsubstituted triazinyl;

[0055] Ar2 is selected from one of the following groups:

[0056]

[0057] each occurrence of u, same or different, is selected from N or CR1, and at most one u is selected from N;

[0058] each occurrence of v, same or different, is selected from N or CR2; when three v are simultaneously selected from N, Ar2 cannot be selected from

[0059] R1is selected from the group consisting of hydrogen atom; deuterium atom; tritium atom; halogen atom; cyano group; substituted or unsubstituted C1-C12alkyl group; substituted or unsubstituted C3-C12cycloalkyl group; substituted or unsubstituted silyl group; C6-C30aryl group substituted with one or more of deuterium atom, tritium atom, halogen atom, cyano group, substituted or unsubstituted C1-C12alkyl group, substituted or unsubstituted C3-C12cycloalkyl group, substituted or unsubstituted silyl group; a bivalent group derived from condensation of C6-C30aromatic ring with C3-C7aliphatic ring; C3-C30heteroaryl group substituted with one or more of deuterium atom, tritium atom, halogen atom, cyano group, substituted or unsubstituted C1-C12alkyl group, substituted or unsubstituted C3-C12cycloalkyl group, substituted or unsubstituted silyl group; a bivalent group derived from condensation of C3-C30heteroaromatic ring with C3-C7aliphatic ring, and combinations thereof;

[0060] R2is selected from the group consisting of hydrogen atom; deuterium atom; tritium atom; halogen atom; cyano group; substituted or unsubstituted C1-C12alkyl group; substituted or unsubstituted C3-C12cycloalkyl group; substituted or unsubstituted silyl group; C6-C30aryl group; C3-C30heteroaryl group; a bivalent group derived from condensation of C6-C30aromatic ring with C3-C7aliphatic ring; a bivalent group derived from condensation of C3-C30heteroaromatic ring with C3-C7aliphatic ring, and combinations thereof;

[0061] L1, L2, L3are independently selected from the group consisting of single bond, substituted or unsubstituted C6-C30arylene group, substituted or unsubstituted C3-C30heteroarylene group, a bivalent group derived from condensation of C6-C30aromatic ring with C3-C7aliphatic ring, a bivalent group derived from condensation of C3-C30heteroaromatic ring with C3-C7aliphatic ring, and combinations thereof;

[0062] L1, L2, L3are independently selected from the group consisting of single bond, substituted or unsubstituted C6-C30arylene group, substituted or unsubstituted C3-C30heteroarylene group, a bivalent group derived from condensation of C6-C30aromatic ring with C3-C7aliphatic ring, a bivalent group derived from condensation of C3-C30heteroaromatic ring with C3-C7aliphatic ring, and combinations thereof;

[0063] Preferably, the substituents in the "substituted or unsubstituted" are independently selected from the group consisting of a deuterium atom; a fluorine atom; a cyano group; a methyl group which is substituted or unsubstituted with one or more of a deuterium atom, a fluorine atom; an ethyl group; an n-propyl group; an isopropyl group which is substituted or unsubstituted with one or more of a deuterium atom, a fluorine atom; an n-butyl group; a sec-butyl group; an isobutyl group; a tert-butyl group which is substituted or unsubstituted with one or more of a deuterium atom, a fluorine atom; a group represented by the following formula which is substituted or unsubstituted with one or more of a deuterium atom, a methyl group, an ethyl group, an isopropyl group, a tert-butyl group: a cyclopropane group, a cyclobutane group, a cyclopentane group, a cyclohexane group, a cycloheptane group, an adamantane group, a norbornane group; a group represented by the following formula which is substituted or unsubstituted with one or more of a deuterium atom, a fluorine atom, a cyano group, a methyl group, a deuterated methyl group, a trifluoromethyl group, an ethyl group, an isopropyl group, a deuterated isopropyl group, a tert-butyl group, a deuterated tert-butyl group, a cyclopropane group, a cyclobutane group, a cyclopentane group, a cyclohexane group, a cycloheptane group, an adamantane group, a norbornane group: a phenyl group, a naphthyl group, an anthryl group, a phenanthryl group, a triphenylene group, a 9,9-dimethylfluorene group, a 9,9-diphenylfluorene group, a spirobifluorene group, a benzofuranyl group, a benzothiophenyl group, a dibenzofuranyl group, a dibenzothiophenyl group, an N-phenylcarbazolyl group, a pyridyl group, a pyrimidinyl group, a quinolyl group, an isoquinolyl group, a benzoxazolyl group, a benzothiazolyl group, a benzcyclopropane group, a benzcyclobutane group, a benzcyclopentane group, a benzcyclohexane group, a benzcycloheptane group; a silyl group which is substituted or unsubstituted with one or more of a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, a tert-butyl group, a phenyl group, a methyl-substituted phenyl group, a tert-butyl-substituted phenyl group, a fluorine atom-substituted phenyl group, a cyano-substituted phenyl group, an adamantane-substituted phenyl group, a norbornane-substituted phenyl group, a naphthyl group, an anthryl group, a phenanthryl group, a biphenyl group, a pyridyl group, a pyrimidinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a 9,9-dimethylfluorene group, when the substituents are plural, the plural substituents are the same or different.

[0064] Preferably, the ring A, the ring B are independently selected from one of the following formulae:

[0065]

[0066] wherein, the w is selected from N or CR3, the R3is selected from one of a hydrogen atom, a deuterium atom, a tritium atom, a halogen atom, a cyano group, a substituted or unsubstituted C1-C12 alkyl group, a substituted or unsubstituted C3-C12 cycloalkyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C3-C30 heteroaryl group, a substituted or unsubstituted C6-C30 aromatic ring and a substituted or unsubstituted C3-C7 aliphatic ring fused monovalent group, a substituted or unsubstituted C3-C30 heteroaromatic ring and a substituted or unsubstituted C3-C7 aliphatic ring fused monovalent group, a combination thereof, the same or different.

[0067] Y is selected from O or S.

[0068] Preferably, R3is selected from one or more of the following groups: Preferably, R3is selected from one or more of the following groups:

[0069]

[0070] wherein a3is selected from 0, 1, 2, 3 or 4, at each occurrence, identically or differently; b3is selected from 0 or 1, at each occurrence, identically or differently; c3is selected from 0, 1 or 2, at each occurrence, identically or differently; and d3is selected from 0, 1, 2 or 3, at each occurrence, identically or differently.

[0071] X and R3are as defined above.

[0072] Preferably, R3is selected from one or more of the following groups:

[0073] Preferably, Ar1is selected from one of the following groups:

[0074]

[0075]

[0076] a 11 each occurrence is the same or different selected from 0, 1, 2, 3, 4, or 5; b 11 each occurrence is the same or different selected from 0, 1, 2, 3, 4, 5, 6, or 7; c 11 each occurrence is the same or different selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, or 9; d 11 each occurrence is the same or different selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or 11; e 11 each occurrence is the same or different selected from 0, 1, 2, or 3; f 11 each occurrence is the same or different selected from 0, 1, 2, 3, or 4; g 11 each occurrence is the same or different selected from 0, 1, or 2; h 11 each occurrence is the same or different selected from 0, 1, 2, 3, 4, 5, or 6; i 11 each occurrence is the same or different selected from 0, 1, 2, 3, 4, 5, 6, 7, or 8; j 11 each occurrence is the same or different selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10;

[0077] R 11 each occurrence is the same or different selected from a hydrogen atom, a deuterium atom, a tritium atom, a halogen atom, a cyano group, a substituted or unsubstituted C1-C12 alkyl group, a substituted or unsubstituted C3-C12 cycloalkyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C2-C30 heteroaryl group, one of the monovalent groups fused from a substituted or unsubstituted C3-C12 alicyclic ring and a C6-C30 aromatic ring;

[0078] R 12 each occurrence is the same or different selected from a hydrogen atom, a deuterium atom, a tritium atom, a halogen atom, a cyano group, a substituted or unsubstituted C1-C12 alkyl group, a substituted or unsubstituted C3-C12 cycloalkyl group, a substituted or unsubstituted silyl group;

[0079] X1is selected from O, S, CR 13 R 14 or NR15 , said R 13 , R 14 , R 15 are independently selected from one of substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted C3-C12 cycloalkyl, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C2-C30 heteroaryl, and a monovalent group fused from C3-C12 alicyclyl and C6-C30 aryl, said R 13 , R 14 can be linked to form a ring;

[0080] said R 16 is selected from one of hydrogen atom, deuterium atom, tritium atom, halogen atom, cyano group, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted C3-C12 cycloalkyl, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C2-C30 heteroaryl, and a monovalent group fused from C3-C12 alicyclyl and C6-C30 aryl;

[0081] said X2 is selected from O, S or NR 17 , said R 17 is selected from one of substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted C3-C12 cycloalkyl, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C2-C30 heteroaryl, and a monovalent group fused from C3-C12 alicyclyl and C6-C30 aryl.

[0082] Preferably, said R 11each occurrence is the same or different selected from the group consisting of a hydrogen atom; a deuterium atom; a tritium atom; a fluorine atom; a cyano group; a trimethylsilyl group; a triphenylsilyl group; a dimethylphenylsilyl group; a methyldiphenylsilyl group; a methyl group; a deuterated methyl group; a trifluoromethyl group; an ethyl group; an n-propyl group; an isopropyl group; a deuterated isopropyl group; an n-butyl group; an isobutyl group; a sec-butyl group; a t-butyl group; a deuterated t-butyl group; a cyclopropane group; a cyclobutane group; a cyclopentane group; a cyclohexane group; a cycloheptane group; an adamantane group; a norbornane group; one or more of the following groups which are unsubstituted or substituted with a deuterium atom, a fluorine atom, a cyano group, a trimethylsilyl group, a triphenylsilyl group, a dimethylphenylsilyl group, a methyldiphenylsilyl group, a methyl group, a deuterated phenyl group, a trifluoromethyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a sec-butyl group, a t-butyl group, a deuterated t-butyl group, a cyclopropane group, a cyclobutane group, a cyclopentane group, a cyclohexane group, a cycloheptane group, an adamantane group, a norbornane group, a phenyl group, a deuterated phenyl group, a methyl-substituted phenyl group, an isopropyl-substituted phenyl group, a t-butyl-substituted phenyl group, a trimethylsilyl-substituted phenyl group, a fluorine atom-substituted phenyl group, a cyano-substituted phenyl group, a naphthyl group, an anthryl group, a phenanthryl group, a triphenylene group, a pyridyl group, a pyrimidinyl group, a quinolyl group, an isoquinolyl group, a quinoxalyl group, a quinazolyl group, a benzofuranyl group, a benzothiophenyl group, an indolyl group, a benzoxazolyl group, a benzothiazolyl group, a benzimidazolyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a benzocyclopropane group, a benzocyclobutane group, a benzocyclopentane group, a benzocyclohexane group, a benzocycloheptane group, a phenyl group, a biphenyl group, a naphthyl group, an anthryl group, a phenanthryl group, a triphenylene group, a fluorenyl group, a spirobifluorenyl group, a pyridyl group, a pyrimidinyl group, a triazinyl group, a quinolyl group, an isoquinolyl group, a quinoxalyl group, a quinazolyl group, a benzofuranyl group, a benzothiophenyl group, an indolyl group, a benzoxazolyl group, a benzothiazolyl group, a benzimidazolyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a carbazolyl group, a benzocyclopropane group, a benzocyclobutane group, a benzocyclopentane group, a benzocyclohexane group, a benzocycloheptane group, a phenyl group.

[0083] Preferably, the R 12 each occurrence is the same or different selected from the group consisting of a hydrogen atom; a deuterium atom; a tritium atom; a fluorine atom; a cyano group; a trimethylsilyl group; a triphenylsilyl group; a dimethylphenylsilyl group; a methyldiphenylsilyl group; a methyl group; a deuterated methyl group; a trifluoromethyl group; an ethyl group; an n-propyl group; an isopropyl group; a deuterated isopropyl group; an n-butyl group; an isobutyl group; a sec-butyl group; a t-butyl group; a deuterated t-butyl group; a cyclopropane group; a cyclobutane group; a cyclopentane group; a cyclohexane group; a cycloheptane group; an adamantane group; a norbornane group.

[0084] Preferably, the R 13 , R 14 , R 15independently selected from the group consisting of methyl; deuterated methyl; trifluoromethyl; ethyl; n-propyl; isopropyl; deuterated isopropyl; n-butyl; isobutyl; sec-butyl; t-butyl; deuterated t-butyl; cyclopropane; cyclobutane; cyclopentane; cyclohexane; cycloheptane; adamantane; norbornane; one or more of the following groups which is unsubstituted or substituted with one or more of the following groups independently selected from a deuterium atom, a fluorine atom, a cyano group, a trimethylsilyl group, a triphenylsilyl group, a dimethylphenylsilyl group, a methyl diphenylsilyl group, a methyl group, a deuterated phenyl group, a trifluoromethyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a sec-butyl group, a t-butyl group, a deuterated t-butyl group, a cyclopropane group, a cyclobutane group, a cyclopentane group, a cyclohexane group, a cycloheptane group, an adamantane group, a norbornane group, a phenyl group, a deuterated phenyl group, a methyl-substituted phenyl group, an isopropyl-substituted phenyl group, a t-butyl-substituted phenyl group, a trimethylsilyl-substituted phenyl group, a fluorine atom-substituted phenyl group, a cyano-substituted phenyl group, a naphthyl group, an anthryl group, a phenanthryl group, a triphenylene group, a pyridyl group, a pyrimidinyl group, a quinolyl group, an isoquinolyl group, a quinoxalyl group, a quinazolyl group, a benzofuranyl group, a benzothiophenyl group, an indolyl group, a benzoxazolyl group, a benzothiazolyl group, a benzimidazolyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a benzocyclopropane group, a benzocyclobutane group, a benzocyclopentane group, a benzocyclohexane group, a benzocycloheptane group, a phenyl group, a biphenyl group, a naphthyl group, an anthryl group, a phenanthryl group, a triphenylene group, a fluorenyl group, a spirobifluorenyl group, a pyridyl group, a pyrimidinyl group, a triazinyl group, a quinolyl group, an isoquinolyl group, a quinoxalyl group, a quinazolyl group, a benzofuranyl group, a benzothiophenyl group, an indolyl group, a benzoxazolyl group, a benzothiazolyl group, a benzimidazolyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a carbazolyl group, a benzocyclopropane group, a benzocyclobutane group, a benzocyclopentane group, a benzocyclohexane group, a benzocycloheptane group, and 13 , R 14 may be linked to form a ring.

[0085] Preferably, the R 16each occurrence is independently selected from the group consisting of hydrogen atom; deuterium atom; tritium atom; fluorine atom; cyano group; methyl group; deuterated methyl group; trifluoromethyl group; ethyl group; n-propyl group; isopropyl group; deuterated isopropyl group; n-butyl group; isobutyl group; sec-butyl group; tert-butyl group; deuterated tert-butyl group; cyclopropane group; cyclobutane group; cyclopentane group; cyclohexane group; cycloheptane group; adamantane group; norbornane group; one or more than one of the following groups which is unsubstituted or substituted by deuterium atom, fluorine atom, cyano group, trimethylsilyl group, triphenylsilyl group, dimethylphenylsilyl group, methyldiphenylsilyl group, methyl group, deuterated phenyl group, trifluoromethyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, deuterated tert-butyl group, cyclopropane group, cyclobutane group, cyclopentane group, cyclohexane group, cycloheptane group, adamantane group, norbornane group, phenyl group, deuterated phenyl group, methyl-substituted phenyl group, isopropyl-substituted phenyl group, tert-butyl-substituted phenyl group, trimethylsilyl-substituted phenyl group, fluorine atom-substituted phenyl group, cyano-substituted phenyl group, naphthyl group, anthryl group, phenanthryl group, triphenylene group, pyridyl group, pyrimidinyl group, quinolyl group, isoquinolyl group, quinoxalyl group, quinazolyl group, benzofuranyl group, benzothiophenyl group, indolyl group, benzoxazolyl group, benzothiazolyl group, benzimidazolyl group, dibenzofuranyl group, dibenzothiophenyl group, benzcyclopropane group, benzcyclobutane group, benzcyclopentane group, benzcyclohexane group, benzcycloheptane group; phenyl group, biphenyl group, naphthyl group, anthryl group, phenanthryl group, triphenylene group, fluorenyl group, spirobifluorenyl group, pyridyl group, pyrimidinyl group, triazinyl group, quinolyl group, isoquinolyl group, quinoxalyl group, quinazolyl group, benzofuranyl group, benzothiophenyl group, indolyl group, benzoxazolyl group, benzothiazolyl group, benzimidazolyl group, dibenzofuranyl group, dibenzothiophenyl group, carbazolyl group, benzcyclopropane group, benzcyclobutane group, benzcyclopentane group, benzcyclohexane group, benzcycloheptane group.

[0086] Preferably, the R 17Each time it appears, it is selected from the following groups, either identically or differently: methyl; deuterated methyl; trifluoromethyl; ethyl; n-propyl; isopropyl; deuterated isopropyl; n-butyl; isobutyl; sec-butyl; tert-butyl; deuterated tert-butyl; cyclopropane; cyclobutane; cyclopentane; cyclohexane; cycloheptane; adamantane; norbornene; deuterium atom; fluorine atom; cyano; trimethylsilyl; triphenylsilyl; dimethylphenylsilyl; methyldiphenylsilyl Alkyl, methyl, deuterated phenyl, trifluoromethyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, deuterated tert-butyl, cyclopropane, cyclobutane, cyclopentane, cyclohexane, cycloheptane, adamantane, norbornene, phenyl, deuterated phenyl, methyl-substituted phenyl, isopropyl-substituted phenyl, tert-butyl-substituted phenyl, trimethylsilyl-substituted phenyl, fluorine-substituted phenyl, cyano-substituted benzene One or more of the following groups, substituted or unsubstituted: phenyl, naphthyl, anthraceneyl, phenanthrene, triphenylene, pyridyl, pyrimidinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, benzofuranyl, benzothiopheneyl, indolyl, benzoxazolyl, benzothiazolyl, benzoimidazolyl, dibenzofuranyl, dibenzothiopheneyl, benzocyclopropane, benzocyclobutane, benzocyclopentane, benzocyclohexane, benzocycloheptane, phenyl One of the following: phenyl, naphthyl, anthraceneyl, phenanthrene, triphenylene, fluorenyl, spirodifluorenyl, pyridyl, pyrimidinyl, triazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, benzofuranyl, benzothiopheneyl, indolyl, benzoxazolyl, benzothiazolyl, benzoimidazolyl, dibenzofuranyl, dibenzothiopheneyl, carbazoleyl, benzocyclopropane, benzocyclobutane, benzocyclopentane, benzocyclohexane, and benzocycloheptane.

[0087] Preferably, the Ar2 is selected from one of the following groups:

[0088]

[0089]

[0090] said a1 is, at each occurrence, the same or different, selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, or 9; said b1 is, at each occurrence, the same or different, selected from 0, 1, 2, 3, 4, 5, 6, 7, or 8; said c1 is, at each occurrence, the same or different, selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or 1 1 ; said d1 is, at each occurrence, the same or different, selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10; said e1 is, at each occurrence, the same or different, selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1, 12, or 13; said f1 is, at each occurrence, the same or different, selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1, or 12; said g1 is, at each occurrence, the same or different, selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1, 12, 13, 14, or 15; said h1 is, at each occurrence, the same or different, selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1, 12, 13, or 14; said i1 is, at each occurrence, the same or different, selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1, 12, 13, 14, 15, 16, or 17; said j1 is, at each occurrence, the same or different, selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1, 12, 13, 14, 15, or 16;

[0091] said R1 is as described herein.

[0092] Preferably, R1is, at each occurrence, the same or different, selected from the group consisting of hydrogen atom; deuterium atom; tritium atom; fluorine atom; cyano group; trimethylsilyl group; triphenylsilyl group; dimethylphenylsilyl group; methyldiphenylsilyl group; methyl group; deuterated methyl group; trifluoromethyl group; ethyl group; n-propyl group; isopropyl group; deuterated isopropyl group; n-butyl group; isobutyl group; sec-butyl group; tert-butyl group; deuterated tert-butyl group; cyclopropane group; cyclobutane group; cyclopentane group; cyclohexane group; cycloheptane group; adamantane group; norbornane group; one or more than one of the following groups which is unsubstituted or substituted with deuterium atom, fluorine atom, cyano group, trimethylsilyl group, triphenylsilyl group, dimethylphenylsilyl group, methyldiphenylsilyl group, methyl group, deuterated phenyl group, trifluoromethyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, deuterated tert-butyl group, cyclopropane group, cyclobutane group, cyclopentane group, cyclohexane group, cycloheptane group, adamantane group, norbornane group, phenyl group, deuterated phenyl group, methyl-substituted phenyl group, isopropyl-substituted phenyl group, tert-butyl-substituted phenyl group, trimethylsilyl-substituted phenyl group, fluorine atom-substituted phenyl group, cyano-substituted phenyl group, naphthyl group, anthryl group, phenanthryl group, triphenylene group, pyridyl group, pyrimidinyl group, quinolyl group, isoquinolyl group, quinoxalyl group, quinazolyl group, benzofuranyl group, benzothiophenyl group, indolyl group, benzoxazolyl group, benzothiazolyl group, benzimidazolyl group, dibenzofuranyl group, dibenzothiophenyl group, benzcyclopropane group, benzcyclobutane group, benzcyclopentane group, benzcyclohexane group, benzcycloheptane group; and one of phenyl group, biphenyl group, naphthyl group, anthryl group, phenanthryl group, triphenylene group, fluorenyl group, spirobifluorenyl group, pyridyl group, pyrimidinyl group, triazinyl group, quinolyl group, isoquinolyl group, quinoxalyl group, quinazolyl group, benzofuranyl group, benzothiophenyl group, indolyl group, benzoxazolyl group, benzothiazolyl group, benzimidazolyl group, dibenzofuranyl group, dibenzothiophenyl group, carbazolyl group, benzcyclopropane group, benzcyclobutane group, benzcyclopentane group, benzcyclohexane group, benzcycloheptane group.

[0093] Preferably, Ar2is selected from one of the following groups:

[0094]

[0095] Preferably, R2is selected from the group consisting of hydrogen atom; deuterium atom; tritium atom; fluorine atom; cyano group; trimethylsilyl group; triphenylsilyl group; dimethylphenylsilyl group; methyldiphenylsilyl group; methyl group; deuterated methyl group; trifluoromethyl group; ethyl group; n-propyl group; isopropyl group; deuterated isopropyl group; n-butyl group; isobutyl group; sec-butyl group; tert-butyl group; deuterated tert-butyl group; cyclopropane group; cyclobutane group; cyclopentane group; cyclohexane group; cycloheptane group; adamantane group; norbornane group; phenyl group; deuterated phenyl group; methyl-substituted phenyl group; isopropyl-substituted phenyl group; tert-butyl-substituted phenyl group; trimethylsilyl-substituted phenyl group; fluorine atom-substituted phenyl group; cyano-substituted phenyl group; naphthyl group; anthryl group; phenanthryl group; triphenylene group; fluorenyl group; spirobifluorenyl group; quinolyl group; isoquinolyl group; quinoxalyl group; quinazolyl group; benzofuranyl group; benzothiophenyl group; indolyl group; benzoxazolyl group; benzothiazolyl group; benzimidazolyl group; dibenzofuranyl group; dibenzothiophenyl group; carbazolyl group; benzocyclopropane group; benzocyclobutane group; benzocyclopentane group; benzocyclohexane group; benzocycloheptane group; and one or more of the above groups are unsubstituted or substituted with one or more of the following groups: phenyl group; biphenyl group; naphthyl group; anthryl group; phenanthryl group; triphenylene group; fluorenyl group; spirobifluorenyl group; quinolyl group; isoquinolyl group; quinoxalyl group; quinazolyl group; benzofuranyl group; benzothiophenyl group; indolyl group; benzoxazolyl group; benzothiazolyl group; benzimidazolyl group; dibenzofuranyl group; dibenzothiophenyl group; carbazolyl group; benzocyclopropane group; benzocyclobutane group; benzocyclopentane group; benzocyclohexane group; benzocycloheptane group.

[0096] Preferably, L1, L2, L3are independently selected from the group consisting of a single bond or one of the following groups:

[0097]

[0098] wherein a is 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10; 101 each occurrence is independently selected from 0, 1, 2, 3, or 4; 101 each occurrence is independently selected from 0, 1, 2, 3, 4, 5, or 6; 101 each occurrence is independently selected from 0, 1, 2, 3, 4, 5, 6, 7, or 8; 101 each occurrence is independently selected from 0, 1, or 2; 101 each occurrence is independently selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10;101 each occurrence is the same or different selected from 0, 1, 2, or 3; and each occurrence is the same or different selected from 0, 1, 2, 3, 4, or 5. 101 each occurrence is the same or different selected from 0, 1, 2, 3, 4, or 5;

[0099] each occurrence is the same or different selected from 0, 1, 2, or 3; and each occurrence is the same or different selected from 0, 1, 2, 3, 4, or 5. 101 , R 102 each occurrence is the same or different selected from a hydrogen atom; a deuterium atom; a tritium atom; a halogen atom; a cyano group; a substituted or unsubstituted C1-C12 alkyl group; a substituted or unsubstituted C3-C12 cycloalkyl group; and a substituted or unsubstituted silyl group.

[0100] each occurrence is the same or different selected from 0, 1, 2, or 3; and each occurrence is the same or different selected from 0, 1, 2, 3, 4, or 5. 101 , R 102 each occurrence is the same or different selected from a hydrogen atom; a deuterium atom; a tritium atom; a halogen atom; a cyano group; a substituted or unsubstituted C1-C12 alkyl group; a substituted or unsubstituted C3-C12 cycloalkyl group; and a substituted or unsubstituted silyl group.

[0101] each occurrence is the same or different selected from 0, 1, 2, or 3; and each occurrence is the same or different selected from 0, 1, 2, 3, 4, or 5.

[0102]

[0103] each occurrence is the same or different selected from 0, 1, 2, or 3; and each occurrence is the same or different selected from 0, 1, 2, 3, 4, or 5.

[0104] each occurrence is the same or different selected from 0, 1, 2, or 3; and each occurrence is the same or different selected from 0, 1, 2, 3, 4, or 5.

[0105]

[0106]

[0107]

[0108]

[0109]

[0110]

[0111]

[0112]

[0113]

[0113]

[0113]

[0113]

[0113]

[0113]

[0113]

[0113]

[0113]

[0113]

[0113]

[0113]

[0113]

[0113]

[0113]

[0113]

[0113]

[0113]

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[0138]

[0139] The aromatic compound of formula (I) of the present application can be prepared by the following synthetic route:

[0140] wherein, X, ring A, ring B, Ar1, Ar2, v, L1, L2, L3 are as defined in the present application; Q1, Q2, Q3 are independently selected from fluorine atom, chlorine atom, bromine atom or iodine atom; G1, G2, G3 are independently selected from B(OH)2 or

[0141] The compound (Y1) and the compound (Y2), (Y3), (Y4) can obtain the target compound (I) through one-step, two-step or three-step C-C coupling reaction. The reaction sequence of the compound (Y1) and the compound (Y2), (Y3), (Y4) is not particularly limited.

[0142] The above synthetic route adopts the reaction type commonly used in organic synthesis, and the reaction conditions (for example, the selection, amount and order and method of addition of the types of reaction solvents, catalysts, ligands and bases) are not particularly limited. The raw materials of the above preparation method are easy to obtain, the preparation process is simple, and the yield is excellent. The present application can also be synthesized by other conventional reaction types in organic synthesis, which is not particularly limited. The above is only an example of the synthetic route.

[0143] The present application also provides an organic electroluminescent device comprising a cathode, an anode, an organic layer, wherein the organic layer is located between the cathode and the anode, and the organic layer comprises a hole transport region, a light emitting layer, and an electron transport region, and the electron transport region contains the aromatic compound of the present application.

[0144] The present application also provides an organic electroluminescent device comprising a cathode, an anode, an organic layer, wherein the organic layer is located between the cathode and the anode, and the organic layer comprises a hole transport region, a light emitting layer, and an electron transport region, and the light emitting layer comprises a host material and a dopant material, and the host material contains the aromatic compound of the present application.

[0145] The present application also provides an organic electroluminescent device comprising a cathode, an anode, an organic layer, a cover layer, wherein the cover layer contains the aromatic compound of the present application.

[0146] The hole transport region comprises at least one of a hole injection layer, a hole transport layer and a light-emitting auxiliary layer. Preferably, the hole transport region comprises the hole injection layer and the hole transport layer, the hole injection layer is located between the anode and the light-emitting layer, and the hole transport layer is located between the hole injection layer and the light-emitting layer. Preferably, the hole transport region comprises the hole injection layer, the hole transport layer and the light-emitting auxiliary layer, the hole injection layer is located between the anode and the light-emitting layer, the hole transport layer is located between the hole injection layer and the light-emitting layer, and the light-emitting auxiliary layer is located between the hole transport layer and the light-emitting layer.

[0147] The hole injection layer can be a single layer structure composed of a single substance, a single layer structure composed of different substances or a multi-layer structure. The triarylamine compound, the porphyrin compound, the styrene compound, the polythiophene and its derivatives, the phthalocyanine derivative, the fulvene compound and other substances with high hole injection property can be used, for example, 4,4',4"-tris[2-naphthylphenylamino]triphenylamine (2-TNATA), 2,3,6,7,10,11-hexacyano-1,4,5,8,9,12-hexaazatriphenylene (HATCN), copper phthalocyanine (CuPC), 2,3,5,6-tetrafluoro-7,7',8,8'-tetracyanoquinodimethane (F4-TCNQ), poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonic acid) (PEDOT / PSS), compounds HT-1 to HT-18 and compounds p-1 to p-5, but not limited thereto.

[0148]

[0149] The hole transport layer can be a single layer structure composed of a single substance, a single layer structure composed of different substances or a multi-layer structure. The triarylamine compound can be used, and other substances with hole mobility of 10 -6 cm 2 Vs or above can be used, for example, N,N'-diphenyl-N,N'-di(3-methylphenyl)-1,1'-biphenyl-4,4'-diamine (TPD), N,N'-diphenyl-N,N'-(1-naphthyl)-1,1'-biphenyl-4,4'-diamine (NPB), 4,4'4"-tris(N,N-diphenylamino)triphenylamine (TDATA), the compounds HT-1 to HT-18 as shown above, but not limited thereto.

[0150] The light-emitting auxiliary layer described in the present application can be a single layer structure composed of a single substance, or a single layer structure or a multi-layer structure composed of different substances. Tris-arylamines, spirofluorene derivatives, and dibenzofuran derivatives can be used, and other substances with appropriate HOMO and T1 energy levels can also be used. Examples include TPD, NPB, N4, N4-bis([1,1'-biphenyl]-4-yl)-N4'-phenyl N4'-[1,1':4',1"-terphenyl]-4-yl-[1,1'-biphenyl]-4,4'-diamine, N-([1,1'-biphenyl]-4-yl)-N-(9,9-dimethyl-9H-furan-2-yl)-9,9'-spirobifluorene-2-amine, N,N-bis([1,1'-biphenyl]-4-yl)-3'-(dibenz[b,d]furan-4-yl)-[1,1'-biphenyl]-4-amine, and compounds HT-1 to HT-18 shown above, but are not limited thereto.

[0151] The light-emitting layer described in the present application includes a guest material and a host material, and can use a double host material formed by two host materials. The host material includes heterocyclic compounds, metal complexes, aromatic amine compounds, etc., but is not limited thereto. Specific examples can include 4,4'-bis(carbazol-9-yl)biphenyl (CBP), 1,3-bis(N-carbazolyl)benzene (MCP), 1,3,5-tris(carbazol-9-yl)benzene (TCP), 9,10-di(2-naphthyl)anthracene (ADN), etc., aromatic compounds described in the present application, but are not limited thereto. Preferably, the host material is selected from the aromatic compounds described in the present application. The guest material includes aromatic amine derivatives, boron compounds, metal complexes, etc., but is not limited thereto. Specific examples can include tris(2-phenylpyridine)iridium (Ir(ppy)3), bis(1-phenyl-isoquinoline)(acetylacetone)iridium (Ir(piq)2(acac)), tris(1-phenyl-isoquinoline)iridium (Ir(piq)3), 2,5,8,11-tetra-t-butylperylene (TBPe), but are not limited thereto.

[0152] The light-emitting layer described in the present application can also include a sensitizer. The sensitizer described in the present application refers to a material that can make the light-emitting material in the light-emitting layer fully utilize the electrically excited particles, thereby improving the performance of the OLED device. The sensitizer can perform functions such as exciton capture, exciton conversion, and exciton transfer in the organic electroluminescent device. The sensitizer is mainly divided into phosphorescent sensitizers, TADF sensitizers, and exciplex sensitizers. Examples of the phosphorescent sensitizer include iridium complexes and platinum complexes, the TADF sensitizer mainly uses TADF materials, and the exciplex sensitizer is composed of a donor material and an acceptor material.

[0153] The electron transport region of the present application comprises at least one of an electron injection layer, an electron transport layer and a hole blocking layer. Preferably, the electron transport region comprises an electron injection layer and an electron transport layer, the electron injection layer is between the cathode and the light emitting layer, and the electron transport layer is between the electron injection layer and the light emitting layer. Preferably, the electron transport region comprises an electron injection layer, an electron transport layer and a hole blocking layer, the electron injection layer is between the cathode and the light emitting layer, the electron transport layer is between the electron injection layer and the light emitting layer, and the hole blocking layer is between the electron transport layer and the light emitting layer.

[0154] The electron injection layer of the present application can be a single layer structure composed of a single substance, a single layer structure composed of different substances or a multi-layer structure. One or more of the following substances can be selected: alkali metals, alkaline earth metals, halides of alkali metals, halides of alkaline earth metals, oxides of alkali metals, oxides of alkaline earth metals, alkali metal salts, alkaline earth metal salts, and other substances with high electron injection property. Examples can include Li, Ca, Sr, LiF, CsF, CaF2, BaO, Li2CO3, CaCO3, Li2C2O4, Cs2C2O4, CsAlF4, LiOx, Yb, Tb, etc., but are not limited thereto.

[0155] The electron transport layer of the present application can be a single layer structure composed of a single substance, a single layer structure composed of different substances or a multi-layer structure. Aluminum complexes, lithium complexes, beryllium complexes, zinc complexes, oxazole derivatives, benzoxazole derivatives, thiazole derivatives, benzothiazole derivatives, imidazole derivatives, benzimidazole derivatives, carbazole derivatives, phenanthroline derivatives, and high molecular compounds with high electron transport property can be used. Examples of the electron transport material of the electron transport layer can include 8-hydroxyquinoline aluminum (Alq3), bis(10-hydroxybenzo[h]quinoline) beryllium (BeBq2), bis(2-methyl-8-hydroxyquinoline-N1, O8)-(1,1'-biphenyl-4-hydroxy) aluminum (BAlq), 2-(4-biphenyl)-5-phenyl oxadiazole (PBD), the aromatic compound of the present application, but are not limited thereto. Preferably, the electron transport material is selected from the aromatic compound of the present application.

[0156] The hole blocking layer of the present application can be a single layer structure composed of a single substance, a single layer structure composed of different substances or a multi-layer structure. The hole blocking material of the hole blocking layer requires that the T1 level is higher than that of the light emitting layer, so as to block the energy loss of the light emitting layer. In addition, the HOMO level of the hole blocking material is lower than that of the host material of the light emitting layer, so as to block the holes. Further, the electron mobility of the hole blocking layer material is 10 -6 cm 2Vs or more, which is favorable for electron transport. One or more of the following substances can be used: aluminum complexes, lithium complexes, beryllium complexes, oxazole derivatives, benzoxazole derivatives, thiazole derivatives, benzothiazole derivatives, imidazole derivatives, benzimidazole derivatives, phenanthroline derivatives, high-molecular compounds, and the like. Examples can include 1,3,5-tris(1-phenyl-1H-benzimidazole-2-yl)benzene (TPBI), BAIq, the aromatic compounds described in the present application, and the like, but are not limited thereto. Preferably, the hole-blocking material is selected from the aromatic compounds described in the present application.

[0157] The anode described in the present application can be a reflective anode, such as a reflective film formed of silver (Ag), magnesium (Mg), aluminum (Al), gold (Au), nickel (Ni), chromium (Cr), ytterbium (Yb), or an alloy thereof, or can be a layer structure having a high work function and being transparent or semi-transparent, such as a layer structure formed of indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), aluminum zinc oxide (AZO), indium gallium oxide (IGO), indium oxide (In2O3), or tin oxide (SnO2), depending on the type of device to be produced, such as a transparent or semi-transparent anode when a bottom-emission device (light emission from the anode side) is to be produced, or a reflective anode when a top-emission device (light emission from the cathode side) is to be produced.

[0158] The cathode described in the present application can be a thin film having a low work function formed of lithium, calcium, lithium / calcium fluoride, lithium / aluminum fluoride, aluminum, silver, magnesium, a magnesium-silver alloy, or the like, and can be a reflective electrode, a transparent electrode, or a semi-transparent electrode by adjusting the thickness of the film, such as a reflective cathode when a bottom-emission device is to be produced, or a transparent or semi-transparent cathode when a top-emission device is to be produced.

[0159] The cover layer described in the present application can be a single layer structure composed of a single substance, or can be a single layer structure or a multi-layer structure composed of different substances. The cover layer material can use an organic or inorganic substance having an appropriate refractive index, such as a metal halide, an oxide, a nitride, an oxynitride, a sulfide, a selenide, an aromatic hydrocarbon compound, a heteroaromatic hydrocarbon compound, an aromatic amine compound, or the like, and examples can include LiF, CsF, MgF2, CaF2, CsCl, CuI, V2O5, WO3, MoO3, TiO2, ZrO, ZnO, SiO2, SiN, ZnS, AIq3, compound CP-1, compound CP-2, compound CP-3, compound CP-4, the aromatic compounds described in the present application, and the like, but are not limited thereto. Preferably, the cover layer material is selected from the aromatic compounds described in the present application.

[0160]

[0161] The above-mentioned each organic layer, cathode, and anode can be prepared by any one of vacuum evaporation, inkjet printing, sputtering, plasma, ion plating, spin coating, immersion, screen printing, etc., and the thickness of each layer is not particularly limited, as long as good device performance is obtained.

[0162] The above-mentioned each organic layer is preferably prepared by a method of vacuum evaporation, inkjet printing, or spin coating.

[0163] The thickness of the above-mentioned each organic layer is usually 1 nm to 100 micrometers, preferably 5 nm to 1000 nm, and more preferably 5 nm to 200 nm. The thickness of the anode and the cathode is adjusted according to the required transparency.

[0164] The organic electroluminescent device provided by the present application can be applied in the fields of lighting and display, and can be specifically listed as a smart phone display screen, a tablet computer display screen, a smart wearable device display screen, a large-size display such as a television, VR, and a car tail light, etc.

[0165] The technical solutions and technical effects of the present application are further illustrated by the following examples and comparative examples.

[0166] The mass spectrum of the compound of the present application is obtained by using a G2-Si quadrupole tandem time-of-flight high-resolution mass spectrometer of Waters Company, UK, and chloroform is used as the solvent.

[0167] Elemental analysis is performed by using a Vario EL cube type organic elemental analyzer of Elementar Company, Germany, and the sample mass is 5-10 mg.

[0168] Synthesis Example 1: Synthesis of intermediate DD / FF

[0169] Synthesis of intermediate DD-14:

[0170]

[0171] Under nitrogen protection, aa-14 (38.29 g, 200 mmol), bb-14 (34.60 g, 200 mmol), Pd(PPh3)4 (0.92 g, 0.8 mmol), and potassium carbonate (58.05 g, 420 mmol) were added to a reaction bottle, followed by adding 1400 ml of a mixed solution of toluene / ethanol / water (2:1:1), and refluxing for 6 hours. After the reaction was completed, it was cooled to room temperature, quenched with water, extracted with dichloromethane, and the organic phases were combined, dried with anhydrous magnesium sulfate, filtered, the filtrate was rotary evaporated, and recrystallized by toluene to obtain cc-14 (35.96 g, yield 75%); HPLC purity ≥ 99.86%. Mass spectrum m / z: 239.0521 (theoretical value: 239.0502).

[0172] Under nitrogen protection, add cc-14 (35.96 g, 150 mmol), THF (330 ml), cool to -78 °C, drop in n-butyllithium / hexane solution 114 ml (1.57 mol / L), stir for 1 h, add triisopropyl borate (42.88 g, 228 mmol) to it, stir for 1 h. Recover to room temperature, add saturated aqueous ammonium chloride solution 159 ml, toluene 330 ml. Wash the organic layer with distilled water (3*300 ml), dry over anhydrous magnesium sulfate, filter off the magnesium sulfate, remove the solvent by distillation under reduced pressure to obtain intermediate DD-14 (29.14 g, yield 78%), solid purity > 99.88% detected by HPLC. Mass spectrum m / z: 249.0969 (theoretical value: 249.0961). According to the synthesis steps of intermediate DD-14, the raw materials are replaced accordingly to obtain the intermediates shown in Table 1a:

[0173] Table 1a

[0174]

[0175]

[0176] Synthesis Example 2: Synthesis of intermediates BB / DD / FF

[0177] Synthesis of intermediate BB-42:

[0178]

[0179] Under nitrogen protection, add aa-42 (62.64 g, 200 mmol), THF (440 ml), cool to -78 °C, drop in n-butyllithium / hexane solution 152 ml (1.57 mol / L), stir for 1 h, add triisopropyl borate (57.17 g, 304 mmol) to it, stir for 1 h. Recover to room temperature, add saturated aqueous ammonium chloride solution 212 ml, toluene 440 ml. Wash the organic layer with distilled water (3*400 ml), dry over anhydrous magnesium sulfate, filter off the magnesium sulfate, remove the solvent by distillation under reduced pressure to obtain intermediate BB-42 (42.83 g, yield 77%), solid purity > 99.75% detected by HPLC. Mass spectrum m / z: 278.0586 (theoretical value: 278.0573). According to the synthesis steps of intermediate BB-42, the raw materials are replaced accordingly to obtain the intermediates shown in Table 2a:

[0180] Table 2a

[0181]

[0182]

[0183] Synthesis Example 3: Synthesis of compound 14

[0184]

[0185] To the reaction flask was added AA-14 (47.60 g, 150 mmol), BB-14 (51.63 g, 150 mmol), potassium carbonate (31.10 g, 225 mmol) and palladium acetate (0.68 g, 3 mmol) under nitrogen protection, then 1500 ml of a mixture of toluene / ethanol / water (2:1:1) was added, the mixture was stirred and heated to reflux for 5 hours. After the reaction was completed, the reaction solution was cooled to room temperature, water was added, extracted with dichloromethane, the organic phase was collected and dried over anhydrous magnesium sulfate, filtered, the solvent was removed under reduced pressure, recrystallized with toluene / methanol (9:1 by volume) to obtain intermediate CC-14 (48.92 g, yield 80%), the solid purity was ≥99.88% by HPLC. Mass spectrum m / z: 405.9767 (theoretical value: 405.9760).

[0186] To the reaction flask was added CC-14 (40.77 g, 100 mmol), DD-14 (24.91 g, 100 mmol), Pd(PPh3)4(0.46 g, 0.4 mmol) and potassium carbonate (20.73 g, 150 mmol) under nitrogen protection, then 1000 ml of a mixture of toluene / ethanol / water (2:1:1) was added, and refluxed for 6 hours. After the reaction was completed, it was cooled to room temperature, water was added to quench the reaction, extracted with dichloromethane, the organic phases were combined, the organic phase was dried over anhydrous magnesium sulfate, filtered, the filtrate was rotary evaporated, recrystallized with toluene to obtain EE-14 (40.97 g, 77%); HPLC purity ≥99.86%. Mass spectrum m / z: 531.1381 (theoretical value: 531.1390).

[0187] To the reaction flask was added EE-14 (26.60 g, 50 mmol), FF-14 (11.10 g, 50 mmol), potassium carbonate (10.37 g, 75 mmol) and Pd2(dba)3(0.46 g, 0.5 mmol) under nitrogen protection, then 500 ml of a mixture of toluene / ethanol / water (2:1:1) was added, the mixture was stirred and heated to reflux for 6.5 hours. After the reaction was completed, it was cooled to room temperature, water was added to quench the reaction, extracted with dichloromethane, the organic phases were combined, the organic phase was dried over anhydrous magnesium sulfate, filtered, the filtrate was rotary evaporated, recrystallized with toluene to obtain compound 14 (24.26 g, yield 72%), the solid purity was ≥99.98% by HPLC. Mass spectrum m / z: 673.2422 (theoretical value: 673.2406). Theoretical elemental content (%) 51 H 31C, 91.37; H, 4.70. Found (%): C, 91.36; H, 4.72.

[0188] Synthesis Example 4: Synthesis of compound 42

[0189]

[0190] To the reaction flask was added AA-42 (22.59 g, 100 mmol), BB-42 (27.81 g, 100 mmol), Pd(PPh3)4(0.46 g, 0.4 mmol) and potassium carbonate (20.73 g, 150 mmol) under nitrogen protection, then 1000 ml of a mixed solution of toluene / ethanol / water (2:1:1) was added, and the mixture was stirred and heated to reflux for 6 hours. After the reaction was completed, it was cooled to room temperature, water was added to quench the reaction, and dichloromethane was used to extract the reaction mixture. The organic phase was combined and dried over anhydrous magnesium sulfate, filtered, and the filtrate was rotary evaporated. The product was recrystallized from toluene to obtain CC-42 (28.45 g, 75%); HPLC purity ≥ 99.89%. Mass spectrum m / z: 378.0019 (theoretical value: 378.0037).

[0191] To the reaction flask was added CC-42 (18.97 g, 50 mmol), DD-42 (29.82 g, 100 mmol), potassium carbonate (20.74 g, 150 mmol) and Pd2(dba)3(0.92 g, 1.0 mmol) under nitrogen protection, then 1000 ml of a mixed solution of toluene / ethanol / water (2:1:1) was added, and the mixture was stirred and heated to reflux for 6.5 hours. After the reaction was completed, it was cooled to room temperature, water was added to quench the reaction, and dichloromethane was used to extract the reaction mixture. The organic phase was combined and dried over anhydrous magnesium sulfate, filtered, and the filtrate was rotary evaporated. The product was recrystallized from toluene to obtain compound 42 (28.93 g, yield 71%), HPLC detection of solid purity ≥ 99.96%. Mass spectrum m / z: 814.2682 (theoretical value: 814.2694). Theoretical elemental content (%) 62 H 38 S: C, 91.37; H, 4.70. Found (%): C, 91.36; H, 4.72.

[0192] Synthesis Example 5: Synthesis of compound 77

[0193]

[0194] Replace BB-14 with equal molar amount of BB-42, DD-14 with equal molar amount of DD-93, FF-14 with equal molar amount of FF-77, and other steps are the same as synthesis example 3, to obtain compound 93 (25.49 g, yield 74%), solid purity > 99.95% by HPLC. Mass m / z: 688.2239 (theoretical value: 688.2225). Theoretical elemental content (%) C 58 H 40 S: C, 90.59; H, 5.24. Actual elemental content (%) C, 90.57; H, 5.22;.

[0195] Synthesis example 6:

[0196]

[0197] Replace BB-14 with equal molar amount of BB-42, DD-14 with equal molar amount of DD-93, FF-14 with equal molar amount of FF-77, and other steps are the same as synthesis example 3, to obtain compound 93 (25.49 g, yield 74%), solid purity > 99.95% by HPLC. Mass m / z: 688.2239 (theoretical value: 688.2225). Theoretical elemental content (%) C 52 H 32 S: C, 90.66; H, 4.68. Actual elemental content (%) C, 90.68; H, 4.67.

[0198] Synthesis example 7: synthesis of compound 105

[0199]

[0200] Replace BB-14 with equal molar amount of BB-42, DD-14 with equal molar amount of DD-93, FF-14 with equal molar amount of FF-77, and other steps are the same as synthesis example 3, to obtain compound 93 (25.49 g, yield 74%), solid purity > 99.95% by HPLC. Mass m / z: 688.2239 (theoretical value: 688.2225). Theoretical elemental content (%) C 56 H 34 O: C, 93.05; H, 4.74. Actual elemental content (%) C, 93.04; H, 4.76.

[0201] Synthesis example 8: synthesis of compound 108

[0202]

[0203] Replace BB-14 with BB-105, DD-14 with DD-108, FF-14 with FF-105, and follow the same procedure as in Synthesis Example 3 to give Compound 108 (26.61 g, 73% yield) with solid purity > 99.95% by HPLC. Mass spectrum m / z: 728.2188 (calcd 728.2174). Theoretical elemental content (%) C 54 H 32 OS: C, 88.98; H, 4.43. Found elemental content (%) C, 88.95; H, 4.44.

[0204] Synthesis Example 9: Synthesis of Compound 113

[0205]

[0206] Replace BB-14 with BB-113, DD-14 with DD-113, FF-14 with FF-105, and follow the same procedure as in Synthesis Example 3 to give Compound 113 (25.70 g, 72% yield) with solid purity > 99.97% by HPLC. Mass spectrum m / z: 713.2363 (calcd 713.2355). Theoretical elemental content (%) C 53 H 31 NO2: C, 89.18; H, 4.38; N, 1.96. Found elemental content (%) C, 89.16; H, 4.37; N, 1.99.

[0207] Synthesis Example 10: Synthesis of Compound 116

[0208]

[0209] Replace BB-14 with BB-105, DD-14 with DD-116, FF-14 with FF-105, and follow the same procedure as in Synthesis Example 3 to give Compound 113 (27.15 g, 75% yield) with solid purity > 99.95% by HPLC. Mass spectrum m / z: 723.2578 (calcd 723.2562). Theoretical elemental content (%) C 55 H 33 NO: C, 91.26; H, 4.60; N, 1.94. Found elemental content (%) C, 91.27; H, 4.63; N, 1.91.

[0210] Synthesis Example 11: Synthesis of Compound 127

[0211]

[0212] Replace BB-14 with BB-127, DD-14 with DD-127, FF-14 with FF-105, and follow the same procedure as in Synthesis Example 3 to give Compound 127 (28.23 g, 74% yield) with solid purity > 99.98% by HPLC. Mass m / z: 762.2568 (calcd 762.2559). Theoretical elemental content (%) C 58 H 34 O2: C, 91.31; H, 4.49. Found elemental content (%) C, 91.32; H, 4.46.

[0213] Synthesis Example 12: Synthesis of Compound 155

[0214]

[0215] Replace BB-14 with BB-155, DD-14 with DD-155, FF-14 with FF-105, and follow the same procedure as in Synthesis Example 3 to give Compound 155 (25.10 g, 73% yield) with solid purity > 99.94% by HPLC. Mass m / z: 687.2181 (calcd 687.2198). Theoretical elemental content (%) C 51 H 29 NO2: C, 89.06; H, 4.25; N, 2.04. Found elemental content (%) C, 89.05; H, 4.26; N, 2.02.

[0216] Synthesis Example 13: Synthesis of Compound 167

[0217]

[0218] Replace BB-14 with BB-105, DD-14 with DD-167, FF-14 with FF-105, and follow the same procedure as in Synthesis Example 3 to give Compound 167 (29.41 g, 76% yield) with solid purity > 99.97% by HPLC. Mass m / z: 773.2736 (calcd 773.2719). Theoretical elemental content (%) C 59 H 35 NO: C, 91.56; H, 4.56; N, 1.81. Found elemental content (%) C, 91.58; H, 4.55; N, 1.83.

[0219] Synthesis Example 14: Synthesis of compound 172

[0220]

[0221] Replace BB-14 with BB-155 in equal molar amount, DD-14 with DD-172 in equal molar amount, FF-14 with FF-172 in equal molar amount, and follow the same procedures as in Synthesis Example 3 to give compound 172 (28.52 g, 77% yield) with solid purity > 99.96% by HPLC. Mass m / z: 740.2473 (calc. 740.2464). Theoretical elemental content (%) C 54 H 32 N2O2: C, 87.55; H, 4.35; N, 3.78. Found: C, 87.54; H, 4.37; N, 3.75.

[0222] Synthesis Example 15: Synthesis of compound 259

[0223]

[0224] Replace BB-14 with BB-259 in equal molar amount, DD-14 with DD-259 in equal molar amount, FF-14 with FF-105 in equal molar amount, and follow the same procedures as in Synthesis Example 3 to give compound 259 (27.41 g, 78% yield) with solid purity > 99.98% by HPLC. Mass m / z: 702.2939 (calc. 702.2923). Theoretical elemental content (%) C 54 H 38 O: C, 92.27; H, 5.45. Found: C, 92.24; H, 5.44.

[0225] Synthesis Example 16: Synthesis of compound 280

[0226]

[0227] Replace BB-14 with BB-280 in equal molar amount, DD-14 with DD-280 in equal molar amount, FF-14 with FF-105 in equal molar amount, and follow the same procedures as in Synthesis Example 3 to give compound 280 (26.14 g, 77% yield) with solid purity > 99.98% by HPLC. Mass m / z: 678.2007 (calc. 678.2017). Theoretical elemental content (%) C 50 H 30 OS: C, 88.47; H, 4.45. Found: C, 88.44; H, 4.47.

[0228] Synthesis of compound 292

[0229]

[0230] Replace BB-14 with BB-42 in equal molar amount, DD-14 with DD-105 in equal molar amount, FF-14 with FF-292 in equal molar amount, and other steps are the same as synthesis example 3, compound 292 (29.59 g, yield 75%) can be obtained, HPLC detection solid purity≧99.93%. Mass spectrum m / z: 788.2525 (theoretical value: 788.2538). Theoretical elemental content (%) C 60 H 36 S: C, 91.34; H, 4.60. Found elemental content (%) : C, 91.35; H, 4.62.

[0231] Synthesis of compound 294

[0232]

[0233] Replace BB-14 with BB-294 in equal molar amount, DD-14 with DD-294 in equal molar amount, FF-14 with FF-292 in equal molar amount, and other steps are the same as synthesis example 3, compound 294 (27.83 g, yield 77%) can be obtained, HPLC detection solid purity≧99.98%. Mass spectrum m / z: 722.2627 (theoretical value: 722.2610). Theoretical elemental content (%) C 56 H 34 O: C, 93.05; H, 4.74. Found elemental content (%) : C, 93.04; H, 4.76.

[0234] Synthesis of compound 337

[0235]

[0236] Replace BB-14 with DD-155 in equal molar amount, DD-14 with DD-337 in equal molar amount, FF-14 with FF-292 in equal molar amount, and other steps are the same as synthesis example 3, compound 337 (28.27 g, yield 78%) can be obtained, HPLC detection solid purity≧99.94%. Mass spectrum m / z: 724.2530 (theoretical value: 724.2515). Theoretical elemental content (%) C 54 H 32N2O: C, 89.48; H, 4.45; N, 3.86. Found (mass %): C, 89.46; H, 4.43; N, 3.87.

[0237] Synthesis Example 20: Synthesis of compound 354

[0238]

[0239] BB-14 was replaced with BB-105 in an equimolar amount, DD-14 was replaced with DD-354 in an equimolar amount, FF-14 was replaced with FF-292 in an equimolar amount, and the other steps were the same as those in Synthesis Example 3, to obtain compound 354 (29.37 g, yield 77%), which had a solid purity of > 99.92% as measured by HPLC. Mass m / z: 762.2572 (theoretical value: 762.2559). Theoretical elemental content (%) C 58 H 34 O2: C, 91.31; H, 4.49. Found (mass %): C, 91.30; H, 4.46.

[0240] Synthesis Example 21: Synthesis of compound 414

[0241]

[0242] BB-14 was replaced with BB-105 in an equimolar amount, DD-14 was replaced with DD-113 in an equimolar amount, FF-14 was replaced with FF-292 in an equimolar amount, and the other steps were the same as those in Synthesis Example 3, to obtain compound 414 (29.03 g, yield 76%), which had a solid purity of > 99.95% as measured by HPLC. Mass m / z: 763.2503 (theoretical value: 763.2511). Theoretical elemental content (%) C 57 H 33 NO2: C, 89.62; H, 4.35; N, 1.83. Found (mass %): C, 89.63; H, 4.38; N, 1.85.

[0243] Synthesis Example 22: Synthesis of compound 499

[0244]

[0245] Replace BB-14 with BB-499, DD-14 with DD-499, FF-14 with FF-292, and follow the same procedure as in the synthesis of Example 3 to give compound 499 (26.93 g, 73% yield) with solid purity > 99.96% by HPLC. Mass spectrum m / z: 737.2336 (calcd 737.2355). Theoretical elemental content (%) C 55 H 31 NO2: C, 89.53; H, 4.23; N, 1.90. Found elemental content (%) C, 89.51; H, 4.25; N, 1.91.

[0246] Synthesis Example 23: Synthesis of compound 525

[0247]

[0248] Replace BB-42 with BB-105, DD-42 with FF-105, and follow the same procedure as in the synthesis of Example 4 to give compound 525 (28.01 g, 75% yield) with solid purity > 99.97% by HPLC. Mass spectrum m / z: 746.2628 (calcd 746.2610). Theoretical elemental content (%) C 58 H 34 O: C, 93.27; H, 4.59. Found elemental content (%) C, 93.25; H, 4.56.

[0249] Synthesis Example 24: Synthesis of compound 539

[0250]

[0251] Replace BB-42 with BB-539, DD-42 with FF-292, and follow the same procedure as in the synthesis of Example 4 to give compound 539 (32.82 g, 74% yield) with solid purity > 99.95% by HPLC. Mass spectrum m / z: 886.2858 (calcd 886.2872). Theoretical elemental content (%) C 68 H 38 O2: C, 92.07; H, 4.32. Found elemental content (%) C, 92.05; H, 4.33.

[0252] Synthesis Example 25: Synthesis of compound 572

[0253]

[0254] Replace BB-42 with equal molar amount of FF-105, DD-42 with equal molar amount of BB-105, and other steps are the same as those in Synthesis Example 4, to obtain compound 572 (28.00 g, yield 76%), HPLC detection of solid purity≧99.96%. Mass spectrum m / z: 736.2417 (theoretical value: 736.2402). Theoretical elemental content (%) C 56 H 32 O2: C, 91.28; H, 4.38. Measured elemental content (%) C, 91.27; H, 4.35.

[0255] Synthesis Example 26: Synthesis of compound 595

[0256]

[0257] Replace BB-42 with equal molar amount of FF-14, DD-42 with equal molar amount of DD-595, and other steps are the same as those in Synthesis Example 4, to obtain compound 595 (28.04 g, yield 78%), HPLC detection of solid purity≧99.94%. Mass spectrum m / z: 718.1776 (theoretical value: 718.1789). Theoretical elemental content (%) C 52 H 30 S2: C, 86.87; H, 4.21. Measured elemental content (%) C, 86.86; H, 4.24.

[0258] Synthesis Example 27: Synthesis of compound 610

[0259]

[0260] Replace AA-14 with equal molar amount of AA-610, BB-14 with equal molar amount of BB-105, DD-14 with equal molar amount of DD-113, FF-14 with equal molar amount of FF-105, and other steps are the same as those in Synthesis Example 3, to obtain compound 610 (27.13 g, yield 76%), HPLC detection of solid purity≧99.92%. Mass spectrum m / z: 713.2368 (theoretical value: 713.2355). Theoretical elemental content (%) C 53 H 31 NO2: C, 89.18; H, 4.38; N, 1.96. Measured elemental content (%) C, 89.15; H, 4.37; N, 1.99.

[0261] Synthesis Example 28: Synthesis of compound 628

[0262]

[0263] Replace AA-14 with an equal molar amount of AA-628, BB-14 with an equal molar amount of BB-105, DD-14 with an equal molar amount of DD-628, FF-14 with an equal molar amount of FF-105, and follow the same procedure as in the synthesis of Example 3 to give compound 628 (25.26 g, 78% yield) with a solid purity of > 99.94% by HPLC. Mass spectrum m / z: 647.2241 (calcd 647.2249). Theoretical elemental content (%) C 49 H 29 NO: C, 90.86; H, 4.51; N, 2.16. Found elemental content (%): C, 90.87; H, 4.50; N, 2.13.

[0264] Synthesis Example 29: Synthesis of compound 648

[0265]

[0266] Replace AA-14 with an equal molar amount of AA-648, BB-14 with an equal molar amount of BB-648, DD-14 with an equal molar amount of BB-105, FF-14 with an equal molar amount of FF-105, and follow the same procedure as in the synthesis of Example 3 to give compound 648 (24.78 g, 73% yield) with a solid purity of > 99.95% by HPLC. Mass spectrum m / z: 678.2704 (calcd 678.2719). Theoretical elemental content (%) C 51 H 26 D5NO: C, 90.24; H, 5.34; N, 2.06. Found elemental content (%): C, 90.25; H, 5.32; N, 2.08.

[0267] Synthesis Example 30: Synthesis of compound 664

[0268]

[0269] Replace BB-14 with an equal molar amount of BB-664, DD-14 with an equal molar amount of DD-664, FF-14 with an equal molar amount of FF-105, and follow the same procedure as in the synthesis of Example 3 to give compound 664 (27.97 g, 74% yield) with a solid purity of > 99.93% by HPLC. Mass spectrum m / z: 755.2296 (calcd 755.2283). Theoretical elemental content (%) C 55 H 33 NOS: C, 87.39; H, 4.40; N, 1.85. Found elemental content (%): C, 87.38; H, 4.43; N, 1.88.

[0270] Synthesis of compound 674

[0271]

[0272] Replace AA-14 with equal molar amount of AA-672, BB-14 with equal molar amount of BB-105, DD-14 with equal molar amount of DD-113, FF-14 with equal molar amount of DD-42, and follow the same procedures as in synthesis of Example 3 to give compound 674 (26.64 g, 72% yield) with solid purity > 99.97% by HPLC. Mass spectrum m / z: 739.2528 (calcd 739.2511). Theoretical elemental content (%) C 55 H 33 NO2: C, 89.29; H, 4.50; N, 1.89. Found: C, 89.27; H, 4.51; N, 1.88.

[0273] Synthesis of compound 678

[0274]

[0275] Replace BB-14 with equal molar amount of DD-113, DD-14 with equal molar amount of DD-678, FF-14 with equal molar amount of FF-105, and follow the same procedures as in synthesis of Example 3 to give compound 678 (29.62 g, 75% yield) with solid purity > 99.98% by HPLC. Mass spectrum m / z: 789.2660 (calcd 789.2668). Theoretical elemental content (%) C 59 H 35 NO2: C, 89.71; H, 4.47; N, 1.77. Found: C, 89.72; H, 4.45; N, 1.78.

[0276] Synthesis of compound 695

[0277]

[0278] Replace BB-14 with equal molar amount of DD-155, DD-14 with equal molar amount of DD-695, FF-14 with equal molar amount of FF-172, and follow the same procedures as in synthesis of Example 3 to give compound 695 (27.75 g, 75% yield) with solid purity > 99.94% by HPLC. Mass spectrum m / z: 739.2502 (calcd 739.2511). Theoretical elemental content (%) C 55 H 33NO2: C, 89.29; H, 4.50; N, 1.89. Found (mass %): C, 89.28; H, 4.52; N, 1.86.

[0279] Synthesis Example 34: Synthesis of compound 724

[0280]

[0281] BB-42 was replaced with an equimolar amount of DD-155, DD-42 was replaced with an equimolar amount of DD-724, and other steps were the same as those in Synthesis Example 4, to obtain compound 724 (27.85 g, yield 73%), which had a solid purity of > 99.91% as measured by HPLC. Mass m / z: 762.2542 (theoretical value: 762.2559). Theoretical elemental content (%) C 58 H 34 O2: C, 91.31; H, 4.49. Found (mass %): C, 91.30; H, 4.46.

[0282] Synthesis Example 35: Synthesis of compound 814

[0283]

[0284] BB-14 was replaced with an equimolar amount of BB-42, DD-14 was replaced with an equimolar amount of DD-814, and FF-14 was replaced with an equimolar amount of FF-105, and other steps were the same as those in Synthesis Example 3, to obtain compound 814 (25.46 g, yield 76%), which had a solid purity of > 99.95% as measured by HPLC. Mass m / z: 669.2515 (theoretical value: 669.2508). Theoretical elemental content (%) C 50 H 23 D7S: C, 89.65; H, 5.57. Found (mass %): C, 89.66; H, 5.55.

[0285] Synthesis Example 36: Synthesis of compound 824

[0286]

[0287] BB-14 was replaced with an equimolar amount of BB-824, DD-14 was replaced with an equimolar amount of FF-14, and FF-14 was replaced with an equimolar amount of FF-824, and other steps were the same as those in Synthesis Example 3, to obtain compound 824 (24.82 g, yield 74%), which had a solid purity of > 99.96% as measured by HPLC. Mass m / z: 670.2288 (theoretical value: 670.2297). Theoretical elemental content (%) C 52 H 30O: C, 93.11; H, 4.51. Found: C, 93.12; H, 4.50.

[0288] Synthesis Example 37: Synthesis of compound 829

[0289]

[0290] BB-14 is replaced with BB-105, DD-14 is replaced with DD-829, FF-14 is replaced with FF-105, and the other steps are the same as those in Synthesis Example 3, to obtain compound 829 (27.45 g, yield 77%), with solid purity > 99.98% detected by HPLC. Mass m / z: 712.2783 (theoretical value: 712.2766). Theoretical elemental content (%) C 55 H 36 O: C, 92.67; H, 5.09. Found: C, 92.64; H, 5.07.

[0291] Synthesis Example 38: Synthesis of compound 847

[0292]

[0293] BB-14 is replaced with BB-105, DD-14 is replaced with DD-829, FF-14 is replaced with FF-105, and the other steps are the same as those in Synthesis Example 3, to obtain compound 829 (27.45 g, yield 77%), with solid purity > 99.98% detected by HPLC. Mass m / z: 712.2783 (theoretical value: 712.2766). Theoretical elemental content (%) C 51 H 31 NO: C, 90.91; H, 4.64; N, 2.08. Found: C, 90.93; H, 4.65; N, 2.07.

[0294] Synthesis Example 39: Synthesis of compound 865

[0295]

[0296] BB-14 is replaced with BB-105, DD-14 is replaced with DD-829, FF-14 is replaced with FF-105, and the other steps are the same as those in Synthesis Example 3, to obtain compound 829 (27.45 g, yield 77%), with solid purity > 99.98% detected by HPLC. Mass m / z: 712.2783 (theoretical value: 712.2766). Theoretical elemental content (%) C59 H 38 O: C, 92.88; H, 5.02. Found (%): C, 92.85; H, 5.00.

[0297] Synthesis Example 40: Synthesis of compound 868

[0298]

[0299] BB-14 is replaced with BB-105, DD-14 is replaced with DD-628, FF-14 is replaced with FF-879, and the other steps are the same as those in Synthesis Example 3, to obtain compound 879 (26.39 g, yield 73%), which has a solid purity of > 99.94% detected by HPLC. Mass m / z: 722.2602 (theoretical value: 722.2610). Theoretical elemental content (%) C 66 H 40 O: C, 93.05; H, 4.74. Found (%): C, 93.03; H, 4.75.

[0300] Synthesis Example 41: Synthesis of compound 879

[0301]

[0302] BB-14 is replaced with BB-105, DD-14 is replaced with DD-628, FF-14 is replaced with FF-879, and the other steps are the same as those in Synthesis Example 3, to obtain compound 879 (26.39 g, yield 73%), which has a solid purity of > 99.94% detected by HPLC. Mass m / z: 722.2602 (theoretical value: 722.2610). Theoretical elemental content (%) C 56 H 34 O: C, 93.05; H, 4.74. Found (%): C, 93.03; H, 4.75.

[0303] Synthesis Example 42: Synthesis of compound 899

[0304]

[0305] BB-42 is replaced with FF-14, DD-42 is replaced with DD-899, and the other steps are the same as those in Synthesis Example 4, to obtain compound 899 (28.83 g, yield 74%), which has a solid purity of > 99.96% detected by HPLC. Mass m / z: 778.2619 (theoretical value: 778.2604). Theoretical elemental content (%) C 56 H26 D8S2: C, 86.34; H, 5.43. Measured elemental content (%): C, 86.36; H, 5.44.

[0306] Synthesis Example 43: Synthesis of Compound 908

[0307]

[0308] By replacing BB-14 with an equimolar amount of BB-113, DD-14 with an equimolar amount of DD-908, and FF-14 with an equimolar amount of FF-908, and following the same steps as in Synthesis Example 3, compound 908 (28.37 g, yield 72%) was obtained. HPLC analysis showed a solid purity ≥ 99.97%. Mass spectrometry m / z: 787.2888 (theoretical value: 787.2875). Theoretical elemental content (%) C 60 H 37 NO: C, 91.46; H, 4.73; N, 1.78. Measured elemental content (%): C, 91.43; H, 4.74; N, 1.79.

[0309] Synthesis Example 44: Synthesis of Compound 918

[0310]

[0311] By replacing BB-14 with an equimolar amount of BB-42, DD-14 with an equimolar amount of DD-155, and FF-14 with an equimolar amount of FF-918, and following the same steps as in Synthesis Example 3, compound 918 (24.48 g, yield 75%) was obtained. HPLC analysis showed a solid purity ≥ 99.95%. Mass spectrometry m / z: 652.1878 (theoretical value: 652.1861). Theoretical elemental content (%) C 48 H 28 OS: C, 88.31; H, 4.32. Measured elemental content (%): C, 88.34; H, 4.30.

[0312] Synthesis Example 45: Synthesis of Compound 980

[0313]

[0314] By replacing AA-14 with an equimolar amount of AA-980, BB-14 with an equimolar amount of BB-105, DD-14 with an equimolar amount of DD-980, and FF-14 with an equimolar amount of FF-105, and following the same steps as in Synthesis Example 3, compound 980 (29.33 g, 70% yield) was obtained. HPLC analysis showed a solid purity ≥ 99.91%. Mass spectrometry m / z: 837.2792 (theoretical value: 837.2780). Theoretical elemental content (%) C 62 H 35 N3O: C, 88.87; H, 4.21; N, 5.01. Measured elemental content (%): C, 88.86; H, 4.24; N, 5.00.

[0315] Synthesis Example 46: Synthesis of Compound 984

[0316]

[0317] By replacing AA-14 with an equimolar amount of AA-980, BB-14 with an equimolar amount of BB-105, DD-14 with an equimolar amount of DD-984, and FF-14 with an equimolar amount of FF-984, and following the same steps as in Synthesis Example 3, compound 984 (28.40 g, yield 71%) was obtained. HPLC analysis showed a solid purity ≥ 99.92%. Mass spectrometry m / z: 799.2613 (theoretical value: 799.2624). Theoretical elemental content (%) C 59 H 33 N3O: C, 88.59; H, 4.16; N, 5.25. Measured elemental content (%): C, 88.57; H, 4.17; N, 5.26.

[0318] The following are compounds other than the aromatic compounds described in this invention used in the device fabrication examples:

[0319]

[0320]

[0321] A combined IVL testing system was constructed, consisting of testing software, a computer, a Keithley K2400 digital source meter, and a Photo Research PR788 spectral scanning luminance meter. The emission spectrum of the device prepared according to this invention was tested at atmospheric pressure and room temperature, as well as at a current density of 10 mA / cm². 2The luminous efficiency was measured. The lifetime (brightness decay to 95% of initial brightness) of the device prepared in this invention was tested using the McScience M6000 OLED lifetime testing system at atmospheric pressure and room temperature. The test results are shown in Tables 1 to 4.

[0322] Comparative device fabrication example 1: Comparative device 1

[0323] First, the ITO / Ag / ITO glass substrate is ultrasonically cleaned twice with deionized water for 20 minutes each time. Then, it is ultrasonically cleaned sequentially with isopropanol, acetone and methanol for 20 minutes each. After that, it is exposed to ultraviolet light and ozone for 30 minutes. Finally, it is placed in a vacuum evaporation equipment for later use.

[0324] The following layers were deposited layer by layer on the ITO / Ag / ITO glass substrate: a) HT-7 and p-3 (mass ratio 100:1) as hole injection layer with a thickness of 10 nm; b) HT-7 as hole transport layer with a thickness of 120 nm; c) HOST-1, HOST-2 and Ir(ppy)2(m-bppy) (mass ratio 47:47:6) as light-emitting layer with a thickness of 30 nm; d) TPBi as hole blocking layer with a thickness of 10 nm; e) TMPyPB and Liq (mass ratio 1:1) as electron transport layer with a thickness of 30 nm; f) LiF as electron injection layer with a thickness of 1 nm; g) Mg and Ag (mass ratio 10:1) as cathode with a thickness of 10 nm; h) ref-1 as capping layer with a thickness of 100 nm.

[0325] Comparative device fabrication examples 2-7: Comparative devices 2-7

[0326] By replacing ref-1 in the overlay layer with ref-2, ref-3, ref-4, ref-5, ref-6, and ref-7 in sequence, and following the same steps as in Comparative Device Preparation Example 1, Comparative Devices 2 to 7 can be obtained.

[0327] Device fabrication examples 1-44: Light-emitting devices 1-44

[0328] Replace ref-1 in the capping layer sequentially with compounds 14, 42, 77, 93, 105, 108, 113, 116, 127, 155, 167, 172, 259, 280, 292, 294, 337, 354, 414, 499, 525, 539, 572, 595, 610, 628, 648, 664, 674, 678, 695, 724, 814, 824, 829, 847, 865, 868, 879, 899, 908, 918, 980, and 984. All other steps are the same as in Comparative Device Preparation Example 1, thus obtaining light-emitting devices 1 to 44.

[0329] Table 1

[0330]

[0331]

[0332]

[0333] Comparative device fabrication example 8: Comparative device 8

[0334] First, the ITO / Ag / ITO glass substrate is ultrasonically cleaned twice with deionized water for 20 minutes each time. Then, it is ultrasonically cleaned sequentially with isopropanol, acetone and methanol for 20 minutes each. After that, it is exposed to ultraviolet light and ozone for 30 minutes. Finally, it is placed in a vacuum evaporation equipment for later use.

[0335] The following layers were deposited layer by layer on the aforementioned ITO / Ag / ITO glass substrate: a) HATCN as a hole injection layer with a thickness of 10 nm; b) HT-12 as a hole transport layer with a thickness of 120 nm; c) HT-10 as a light-emitting auxiliary layer with a thickness of 30 nm; d) TPBA and BD (mass ratio 95:5) as a light-emitting layer with a thickness of 40 nm; d) TPBi as a hole blocking layer with a thickness of 20 nm; e) ref-8 and Liq (mass ratio 1:1) as an electron transport layer with a thickness of 30 nm; f) LiF as an electron injection layer with a thickness of 1 nm; g) Mg and Ag (mass ratio 10:1) as a cathode with a thickness of 10 nm; h) CP-4 as a capping layer with a thickness of 120 nm.

[0336] Comparative device fabrication examples 9-10: Comparative devices 9-10

[0337] By replacing ref-8 in the electron transport layer with ref-9 and ref-10 in turn, and following the same steps as in Comparative Device Preparation Example 8, Comparative Devices 9 and 10 can be obtained.

[0338] Device fabrication examples 45-88: Light-emitting devices 45-88

[0339] Replace ref-8 in the electron transport layer sequentially with compounds 14, 42, 77, 93, 105, 108, 113, 116, 127, 155, 167, 172, 259, 280, 292, 294, 337, 354, 414, 499, 525, 539, 572, and so on. Compounds 595, 610, 628, 648, 664, 674, 678, 695, 724, 814, 824, 829, 847, 865, 868, 879, 899, 908, 918, 980, and 984, with all other steps being the same as in Comparative Device Preparation Example 8, can be used to obtain light-emitting devices 45–88.

[0340] Table 2

[0341]

[0342]

[0343]

[0344] Comparative device fabrication example 11: Comparative device 11

[0345] First, the ITO / Ag / ITO glass substrate is ultrasonically cleaned twice with deionized water for 20 minutes each time. Then, it is ultrasonically cleaned sequentially with isopropanol, acetone and methanol for 20 minutes each. After that, it is exposed to ultraviolet light and ozone for 30 minutes. Finally, it is placed in a vacuum evaporation equipment for later use.

[0346] The following layers were deposited layer by layer on the aforementioned ITO / Ag / ITO glass substrate: a) HT-7 and p-3 (mass ratio 100:1) as hole injection layer with a thickness of 10 nm; b) HT-7 as hole transport layer with a thickness of 100 nm; c) HT-17 as light-emitting auxiliary layer with a thickness of 40 nm; d) ref-11, HOST-3 and Ir(dpm)PQ2 (mass ratio 48:48:4) as light-emitting layer with a thickness of 30 nm; e) TPBi as hole blocking layer with a thickness of 10 nm; f) TMPyPB and Liq (mass ratio 1:1) as electron transport layer with a thickness of 30 nm; g) LiF as electron injection layer with a thickness of 1 nm; h) Mg and Ag (mass ratio 10:1) as cathode with a thickness of 10 nm; i) CP-4 as capping layer with a thickness of 120 nm.

[0347] Comparative device fabrication examples 12-14: Comparative devices 12-14

[0348] By sequentially replacing ref-11 in the light-emitting layer with ref-12, ref-13, and ref-14, and following the same steps as in Comparative Device Preparation Example 11, Comparative Devices 12 to 14 can be obtained.

[0349] Device fabrication examples 89-132: Light-emitting devices 89-132

[0350] The ref-1 in the luminescent layer was sequentially replaced with compounds 14, 42, 77, 93, 105, 108, 113, 116, 127, 155, 167, 172, 259, 280, 292, 294, 337, 354, 414, 499, 525, 539, 572, and 499. Compounds 595, 610, 628, 648, 664, 674, 678, 695, 724, 814, 824, 829, 847, 865, 868, 879, 899, 908, 918, 980, and 984, with all other steps being the same as in Comparative Device Preparation Example 11, yielded light-emitting devices 89–132.

[0351] Table 3

[0352]

[0353]

[0354]

[0355] Comparative device fabrication example 15: Comparative device 15

[0356] First, the ITO / Ag / ITO glass substrate is ultrasonically cleaned twice with deionized water for 20 minutes each time. Then, it is ultrasonically cleaned sequentially with isopropanol, acetone and methanol for 20 minutes each. After that, it is exposed to ultraviolet light and ozone for 30 minutes. Finally, it is placed in a vacuum evaporation equipment for later use.

[0357] The following layers were deposited layer by layer on the aforementioned ITO / Ag / ITO glass substrate: a) HT-3 and p-1 (mass ratio 100:1) as hole injection layer with a thickness of 10 nm; b) HT-3 as hole transport layer with a thickness of 130 nm; c) HOST-2, HOST-4 and Ir(ppy)3 (mass ratio 47:47:6) as light-emitting layer with a thickness of 30 nm; d) ref-8 as hole blocking layer with a thickness of 10 nm; e) TMPyPB and Liq (mass ratio 1:1) as electron transport layer with a thickness of 30 nm; f) LiF as electron injection layer with a thickness of 1 nm; g) Mg and Ag (mass ratio 10:1) as cathode with a thickness of 10 nm; h) CP-4 as capping layer with a thickness of 120 nm.

[0358] Comparative device fabrication examples 16-17: Comparative devices 16-17

[0359] By replacing ref-8 in the hole blocking layer with ref-9 and ref-10 in turn, and following the same steps as in Comparative Device Preparation Example 15, Comparative Devices 16 and 17 can be obtained.

[0360] Device fabrication examples 133-147: Light-emitting devices 133-147

[0361] By sequentially replacing ref-8 in the hole blocking layer with compounds 14, 113, 116, 172, 337, 414, 610, 628, 648, 674, 678, 847, 908, 980, and 984, and following the same steps as in Comparative Device Preparation Example 15, light-emitting devices 133–147 can be obtained.

[0362] Table 4

[0363]

[0364]

[0365] The device data in Tables 1 to 4 show that the aromatic compounds provided by this invention, when used as capping materials in OLED devices, can effectively improve the luminous efficiency and lifespan of the devices. When used as electron transport materials, hole blocking materials, or host materials, they can effectively improve the driving voltage, luminous efficiency, and lifespan of the devices.

[0366] It should be noted that the present invention has been specifically described with reference to individual embodiments, but those skilled in the art can make various forms or details of improvements to the present invention without departing from the principles of the present invention, and these improvements also fall within the protection scope of the present invention.

Claims

1. An aromatic compound, characterized in that, The aromatic compound has the structure shown in formula (I): Wherein, X is selected from O or S; The ring A and ring B are independently selected from one of substituted or unsubstituted C6-C30 aromatic rings and substituted or unsubstituted C3-C30 heteroaromatic rings; The Ar1 is selected from one of the following: substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C3-C30 heteroaryl, a monovalent group formed by fusion of a substituted or unsubstituted C6-C30 aromatic ring and a substituted or unsubstituted C3-C7 aliphatic ring, a monovalent group formed by fusion of a substituted or unsubstituted C3-C30 heteroaryl ring and a substituted or unsubstituted C3-C7 aliphatic ring, and combinations thereof; and the Ar1 is not selected from substituted or unsubstituted pyridyl, substituted or unsubstituted pyrimidinyl, substituted or unsubstituted pyrazinyl, substituted or unsubstituted pyridazinyl, substituted or unsubstituted pyridazinyl, or substituted or unsubstituted triazinyl. The Ar2 group is selected from one of the following groups: Each time u appears, it is selected from N or CR1, either the same or different, and at most one u is selected from N; Each time v appears, it is selected from N or CR2, either the same or different; when three v are simultaneously selected from N, Ar2 cannot be selected from N. Each time R1 appears, it is selected from the following groups, either identically or differently: hydrogen atom; deuterium atom; tritium atom; halogen atom; cyano group; substituted or unsubstituted C1-C12 alkyl group; substituted or unsubstituted C3-C12 cycloalkyl group; substituted or unsubstituted silyl group; aryl group of C6-C30 substituted or unsubstituted with one or more of deuterium atom, tritium atom, halogen atom, cyano group, substituted or unsubstituted C1-C12 alkyl group, substituted or unsubstituted C3-C12 cycloalkyl group, or substituted or unsubstituted silyl group; or alkyl group of C6-C30 substituted or unsubstituted with one or more of deuterium atom, tritium atom, halogen atom, cyano group, substituted or unsubstituted C1-C12 alkyl group, substituted or unsubstituted C3-C12 cycloalkyl group, or substituted or unsubstituted silyl group. A monovalent group formed by fusion of one or more substituted or unsubstituted C6-C30 aromatic rings with C3-C7 aliphatic rings; a heteroaryl group formed by fusion of one or more substituted or unsubstituted C3-C30 heteroaryl groups selected from deuterium atom, tritium atom, halogen atom, cyano group, substituted or unsubstituted C1-C12 alkyl group, substituted or unsubstituted C3-C12 cycloalkyl group, and substituted or unsubstituted silyl group; a monovalent group formed by fusion of one or more substituted or unsubstituted C3-C30 heteroaryl rings with C3-C7 aliphatic rings selected from deuterium atom, tritium atom, halogen atom, cyano group, substituted or unsubstituted C1-C12 alkyl group, substituted or unsubstituted C3-C12 cycloalkyl group, and substituted or unsubstituted silyl group. Each time R2 appears, it is selected from the same or different groups of hydrogen atom, deuterium atom, tritium atom, halogen atom, cyano group, substituted or unsubstituted C1-C12 alkyl group, substituted or unsubstituted C3-C12 cycloalkyl group, substituted or unsubstituted silyl group, substituted or unsubstituted C6-C30 aryl group, substituted or unsubstituted C3-C30 heteroaryl group, a monovalent group formed by fusion of a substituted or unsubstituted C6-C30 aromatic ring and a substituted or unsubstituted C3-C7 aliphatic ring, a monovalent group formed by fusion of a substituted or unsubstituted C3-C30 heteroaryl ring and a substituted or unsubstituted C3-C7 aliphatic ring, or a combination thereof. The L1, L2, and L3 are independently selected from one of the following: single bond, substituted or unsubstituted C6-C30 arylene, substituted or unsubstituted C3-C30 heteroarylene, a divalent group formed by fusion of a substituted or unsubstituted C6-C30 aromatic ring and a substituted or unsubstituted C3-C7 aliphatic ring, a divalent group formed by fusion of a substituted or unsubstituted C3-C30 heteroaromatic ring and a substituted or unsubstituted C3-C7 aliphatic ring, and combinations thereof; Each time the substituents of L1, L2, and L3 appear, they are selected from one of the following groups, either the same or different: deuterium atom, tritium atom, halogen atom, cyano group, C1-C12 alkyl group, C3-C12 cycloalkyl group, substituted or unsubstituted silyl group.

2. The aromatic compound according to claim 1, characterized in that, The rings A and B are independently selected from one of the following groups: Wherein, each time w appears, it is selected from N or CR3 in the same or different ways; each time R3 appears, it is selected from hydrogen atom, deuterium atom, tritium atom, halogen atom, cyano, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted C3-C12 cycloalkyl, substituted or unsubstituted silyl, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C3-C30 heteroaryl, a monovalent group formed by fusion of a substituted or unsubstituted C6-C30 aromatic ring and a substituted or unsubstituted C3-C7 aliphatic ring, a monovalent group formed by fusion of a substituted or unsubstituted C3-C30 heteroaryl ring and a substituted or unsubstituted C3-C7 aliphatic ring, or a combination thereof. The Y is selected from O or S.

3. The aromatic compound according to claim 1, characterized in that, The aforementioned Selected from one of the following groups: The X is as described in claim 1; Each time a3 appears, it is selected from 0, 1, 2, 3 or 4, either the same or different; each time b3 appears, it is selected from 0 or 1, either the same or different; each time c3 appears, it is selected from 0, 1 or 2, either the same or different; each time d3 appears, it is selected from 0, 1, 2 or 3, either the same or different. The R3 is as described in claim 2.

4. The aromatic compound according to claim 1, characterized in that, The Ar1 is selected from one of the following groups: The a mentioned 11 Each time it appears, it is selected from 0, 1, 2, 3, 4, or 5, either identically or differently; the b mentioned 11 Each time it appears, it is selected from 0, 1, 2, 3, 4, 5, 6, or 7, either identically or differently; c 11 Each time it appears, it is selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, or 9, either identically or differently; the d mentioned 11 Each time it appears, it is selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or 11, either identically or differently; the e 11 Each time it appears, it is selected from 0, 1, 2, or 3, either identically or differently; the f mentioned 11 Each time it appears, it is selected from 0, 1, 2, 3, or 4, either identically or differently; the g mentioned 11 Each time it appears, it is selected from 0, 1, or 2, either identically or differently; the h mentioned 11 Each time it appears, it is selected from 0, 1, 2, 3, 4, 5, or 6, either identically or differently; the i 11 Each time it appears, it is selected from 0, 1, 2, 3, 4, 5, 6, 7, or 8, either identically or differently; the j mentioned 11 Each time it appears, it is selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10, either the same or different. The R mentioned 11 Each time it appears, it is selected from one of the following groups, either the same or different: hydrogen atom, deuterium atom, tritium atom, halogen atom, cyano group, substituted or unsubstituted C1-C12 alkyl group, substituted or unsubstituted C3-C12 cycloalkyl group, substituted or unsubstituted silyl group, substituted or unsubstituted C6-C30 aryl group, substituted or unsubstituted C2-C30 heteroaryl group, or a monovalent group formed by fusion of a substituted or unsubstituted C3-C12 aliphatic ring and a C6-C30 aromatic ring; The R mentioned 12 Each time it appears, it is selected from one of the following, either the same or different: hydrogen atom, deuterium atom, tritium atom, halogen atom, cyano group, substituted or unsubstituted C1-C12 alkyl group, substituted or unsubstituted C3-C12 cycloalkyl group, or substituted or unsubstituted silyl group; X1 is selected from O, S, and CR. 13 R 14 or NR 15 The R mentioned 13 R 14 R 15 The R is independently selected from one of the following: substituted or unsubstituted C1-C12 alkyl groups, substituted or unsubstituted C3-C12 cycloalkyl groups, substituted or unsubstituted C6-C30 aryl groups, substituted or unsubstituted C2-C30 heteroaryl groups, and monovalent groups formed by the fusion of a substituted or unsubstituted C3-C12 aliphatic ring and a C6-C30 aromatic ring. 13 R 14 They can be connected to form a ring; The R mentioned 16 It is selected from one of the following: hydrogen atom, deuterium atom, tritium atom, halogen atom, cyano group, substituted or unsubstituted C1-C12 alkyl group, substituted or unsubstituted C3-C12 cycloalkyl group, substituted or unsubstituted C6-C30 aryl group, substituted or unsubstituted C2-C30 heteroaryl group, and a monovalent group formed by fusion of a substituted or unsubstituted C3-C12 aliphatic ring and a C6-C30 aromatic ring; The X2 is selected from O, S or NR. 17 The R mentioned 17 It is selected from one of the following: substituted or unsubstituted C1-C12 alkyl groups, substituted or unsubstituted C3-C12 cycloalkyl groups, substituted or unsubstituted C6-C30 aryl groups, substituted or unsubstituted C2-C30 heteroaryl groups, and monovalent groups formed by the fusion of substituted or unsubstituted C3-C12 aliphatic rings and C6-C30 aromatic rings.

5. The aromatic compound according to claim 1, characterized in that, The Ar2 group is selected from one of the following groups: Each time a1 appears, it is selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, or 9, either the same or different. Each time b1 appears, it is selected from 0, 1, 2, 3, 4, 5, 6, 7, or 8, either the same or different. Each time c1 appears, it is selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or 11, either the same or different. Each time d1 appears, it is selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10, either the same or different. Each time e1 appears, it is selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, or 13, either the same or different. Each time f1 appears, it is selected from 0, 1, 2, 3, 4, 5, 6, 7, or 9, either the same or different. The numbers g1, h1, i1, j1, and j1 are selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or 15, respectively. The numbers g1, h1, i1, and j1 are selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or 15, respectively. R1 is as described in claim 1.

6. The aromatic compound according to claim 1, characterized in that, The L1, L2, and L3 are independently selected from single bonds or one of the following groups: Wherein, the a 101 Each time it appears, it is selected from 0, 1, 2, 3, or 4, either identically or differently; the b mentioned 101 Each time it appears, it is selected from 0, 1, 2, 3, 4, 5, or 6, either identically or differently; the c mentioned 101 Each time it appears, it is selected from 0, 1, 2, 3, 4, 5, 6, 7, or 8, either identically or differently; the d mentioned 101 Each time it appears, it is selected from 0, 1, or 2, either identically or differently; the e 101 Each time it appears, it is selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10, either identically or differently; the f mentioned 101 Each time it appears, it is selected from 0, 1, 2, or 3, either identically or differently; the g mentioned 101 Each time it appears, it is selected from 0, 1, 2, 3, 4 or 5, either the same or different. The R mentioned 101 R 102 Each time it appears, it is selected from one of the following, either the same or different: hydrogen atom, deuterium atom, tritium atom, halogen atom, cyano group, substituted or unsubstituted C1-C12 alkyl group, substituted or unsubstituted C3-C12 cycloalkyl group, or substituted or unsubstituted silyl group.

7. The aromatic compound according to claim 1, characterized in that, The aromatic compound is selected from one of the following compounds:

8. An organic electroluminescent device, comprising a cathode, an anode, and an organic layer, wherein the organic layer is located between the cathode and the anode, and the organic layer includes a hole transport region, a light-emitting layer, and an electron transport region, characterized in that, The electron transport region contains an aromatic compound as described in any one of claims 1 to 7.

9. An organic electroluminescent device, comprising a cathode, an anode, and an organic layer, wherein the organic layer is located between the cathode and the anode, the organic layer comprising a hole transport region, a light-emitting layer, and an electron transport region, the light-emitting layer comprising a host material and a dopant material, characterized in that, The main material contains an aromatic compound as described in any one of claims 1 to 7.

10. An organic electroluminescent device, comprising a cathode, an anode, an organic layer, and a capping layer, characterized in that, The coating layer contains an aromatic compound as described in any one of claims 1 to 7.

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