Organic compound, organic electroluminescent device, and electronic apparatus

Abstract

The present application relates to the technical field of organic electroluminescent materials, and provides a compound, an organic electroluminescent device comprising same, and an electronic apparatus. The organic compound has a structure as shown in Formula II below. The compound structure of the present application contains a phenanthro[4,3-b]benzofuran (or thiophene) core structure, the core being connected by means of a specific position to a substituted triazine group, and serving as an electron-transport-type host material. When the compound of the present application is used as an electron-transport-type host material in a mixed host material, it can improve a carrier balance in a light-emitting layer, broaden a carrier recombination zone, increase exciton generation and utilization efficiency, and improve the luminous efficiency and lifespan of the device.

Description

Organic compound, organic electroluminescent device, and electronic device

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. CN202410437064.1, filed on April 11, 2024, the contents of which are incorporated herein in their entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of organic electroluminescent materials, in particular to an organic compound, an organic electroluminescent device and an electronic device thereof. BACKGROUND

[0004] In recent years, organic electroluminescent devices (OLEDs) have become a very popular emerging flat display product at home and abroad, because OLED displays have the characteristics of self-emission, wide viewing angle, short response time, high efficiency, wide color gamut, etc.

[0005] An organic electroluminescent device (OLED) generally includes an anode, a cathode, and an organic layer formed between the two electrodes. The organic layer can include a hole injection layer, a hole transport layer, a hole auxiliary layer, an electron blocking layer, a light-emitting layer (containing a host and a dopant material), a hole blocking layer, an electron transport layer, an electron injection layer, etc. If a voltage is applied to the organic electroluminescent device, holes and electrons are injected into the light-emitting layer from the anode and the cathode, respectively. Then in the light-emitting layer, the injected holes and electrons recombine to form excitons. The excitons in the excited state release energy outward, and then the light-emitting layer emits light outward.

[0006] At present, there are still problems of poor performance in the use of organic electroluminescent devices, such as excessively high driving voltage, excessively low luminous efficiency, or short service life, etc., which will affect the use field of organic electroluminescent devices. Therefore, it is still necessary to further study this field to improve the performance of organic electroluminescent devices. SUMMARY

[0007] In view of the above problems existing in the prior art, the purpose of the present application is to provide an organic compound, an organic electroluminescent device and an electronic device comprising the same, which is used in an organic electroluminescent device and can improve the performance of the device.

[0008] According to a first aspect of the present application, an organic compound is provided, having a structure as shown in formula II:

[0009] In formula II, D represents deuterium, and n represents 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or 11;

[0010] T is selected from O or S;

[0011] L, L1and L2are the same or different, and each is independently selected from a single bond, a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroarylene group having 3 to 30 carbon atoms;

[0012] the substituents in L, L1and L2are the same or different, and each is independently selected from deuterium, a cyano group, a halogen group, an alkyl group having 1 to 10 carbon atoms, a haloalkyl group having 1 to 10 carbon atoms, a deuterated alkyl group having 1 to 10 carbon atoms, a trialkylsilyl group having 3 to 12 carbon atoms, an aryl group having 6 to 20 carbon atoms, a deuterated aryl group having 6 to 20 carbon atoms, a heteroaryl group having 3 to 20 carbon atoms, or a cycloalkyl group having 5 to 10 carbon atoms;

[0013] Ar1is selected from a substituted or unsubstituted aryl group having 10 to 30 carbon atoms, or a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms;

[0014] Ar2is selected from a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, or a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms;

[0015] the substituents in Ar1and Ar2are the same or different, and each is independently selected from hydrogen, deuterium, a cyano group, a halogen group, an alkyl group having 1 to 10 carbon atoms, a haloalkyl group having 1 to 10 carbon atoms, a deuterated alkyl group having 1 to 10 carbon atoms, a trialkylsilyl group having 3 to 12 carbon atoms, an aryl group having 6 to 20 carbon atoms, a deuterated aryl group having 6 to 20 carbon atoms, a heteroaryl group having 3 to 20 carbon atoms, or a cycloalkyl group having 5 to 10 carbon atoms; optionally, any two adjacent substituents form a saturated or unsaturated 5- to 13-membered ring.

[0016] According to a second aspect of the present application, there is provided an organic electroluminescence device comprising an anode and a cathode arranged oppositely, and a functional layer arranged between the anode and the cathode; the functional layer comprising the organic compound described above.

[0017] In some embodiments, the organic electroluminescence device is selected from a red organic electroluminescence device.

[0018] According to a third aspect of the present application, there is provided an electronic device comprising the organic electroluminescence device of the second aspect.

[0019] The compound of the present application contains a mother nucleus structure of phenanthro[4,3-b]benzofuran (or thiophene) in the structure of the compound, and the mother nucleus is connected to a substituted or unsubstituted aryl group having 6 to 30 carbon atoms or a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms through a specific position (5th position or 6th position ) and an electron-deficient heteroaryl group of triazine as an electron transport type light-emitting host material. On the one hand, the special fused mode of phenanthrene and benzofuran ensures that the mother nucleus of phenanthro[4,3-b]benzofuran (or thiophene) has a relatively suitable first excited triplet state energy level, which is suitable as a red light host material fragment; on the other hand, the mother nucleus structure of phenanthro[4,3-b]benzofuran (or thiophene) has a larger conjugated system, which can enhance the intermolecular force and improve the electron mobility of the compound after being connected with the electron-deficient heteroaryl group of triazine through the 5th or 6th position; the adjacent position of the triazine group on the mother nucleus of the compound does not contain other substituents with a volume larger than hydrogen (or deuterium), which avoids affecting the spatial conformation of the triazine group. When the compound of the present application is used as an electron transport type host material in a mixed light-emitting host material, the carrier balance in the light-emitting layer can be improved, the carrier recombination area can be widened, the excitation generation and utilization efficiency can be improved, and the device luminous efficiency and service life can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, help to explain the present application, and together with the specific embodiments below, but do not constitute a limitation on the present application.

[0021] FIG. 1 is a schematic structural diagram of an organic electroluminescent device according to an embodiment of the present application.

[0022] FIG. 2 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

[0023] Reference signs 100, anode 200, cathode 300, functional layer 310, hole injection layer 321, first hole transport layer 322, light-emitting adjustment layer 320, hole transport layer 330, organic light-emitting layer 340, electron transport layer 350, electron injection layer 400, electronic device DETAILED DESCRIPTION

[0024] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, exemplary embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the present application will be more thorough and complete, and will fully convey the concept of exemplary embodiments to those skilled in the art. The described features, structures, or characteristics can be combined in one or more embodiments in any suitable manner. In the following description, numerous specific details are provided to give a sufficient understanding of the embodiments of the present application.

[0025] According to a first aspect of the present application, an organic compound having a structure as shown in formula II below is provided:

[0026] In formula II, D represents deuterium, and n represents 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or 11;

[0027] T is selected from O or S;

[0028] L, L1and L2are the same or different, and each is independently selected from a single bond, a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroarylene group having 3 to 30 carbon atoms;

[0029] The substituents in L, L1and L2are the same or different, and each is independently selected from deuterium, a cyano group, a halogen group, an alkyl group having 1 to 10 carbon atoms, a haloalkyl group having 1 to 10 carbon atoms, a deuterated alkyl group having 1 to 10 carbon atoms, a trialkylsilyl group having 3 to 12 carbon atoms, an aryl group having 6 to 20 carbon atoms, a deuterated aryl group having 6 to 20 carbon atoms, a heteroaryl group having 3 to 20 carbon atoms, or a cycloalkyl group having 5 to 10 carbon atoms;

[0030] Ar1is selected from a substituted or unsubstituted aryl group having 10 to 30 carbon atoms, or a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms;

[0031] Ar2is selected from a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, or a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms;

[0032] The substituents in Ar1and Ar2are the same or different, and each is independently selected from hydrogen, deuterium, a cyano group, a halogen group, an alkyl group having 1 to 10 carbon atoms, a haloalkyl group having 1 to 10 carbon atoms, a deuterated alkyl group having 1 to 10 carbon atoms, a trialkylsilyl group having 3 to 12 carbon atoms, an aryl group having 6 to 20 carbon atoms, a deuterated aryl group having 6 to 20 carbon atoms, a heteroaryl group having 3 to 20 carbon atoms, or a cycloalkyl group having 5 to 10 carbon atoms; optionally, any two adjacent substituents form a saturated or unsaturated 5 to 13-membered ring.

[0033] In some embodiments, the organic compound of the present application has a structure as shown in formula I below:

[0034] In formula I, T, L, L1, L2, Ar1and Ar2all have the same meaning as in formula II.

[0035] In the present application, the saturated or unsaturated 5 to 13-membered ring refers to a carbocyclic ring or a heterocyclic ring containing 5 to 13 ring atoms; for example, but not limited to, cyclopentane, cyclohexane, benzene ring, fluorene ring, pyran ring, tetrahydropyran ring, piperidine ring, tetrahydropiperidine ring, etc.

[0036] In the present application, the term "optionally" or "optionally" means that the event or environment described later can occur or can not occur. For example, "optionally, any two adjacent substituents form a saturated or unsaturated 3-15 membered ring" includes a case where any two adjacent substituents form a ring, and a case where any two adjacent substituents each independently exist without forming a ring. "Any two adjacent" can include a case where two substituents are on the same atom, and a case where one substituent is on each of two adjacent atoms. In the case where two substituents are on the same atom, the two substituents can form a saturated or unsaturated spiro ring with the atom to which they are commonly connected. In the case where one substituent is on each of two adjacent atoms, the two substituents can be fused into a ring.

[0037] In the present application, the description "each of... is independently" used interchangeably with "each of... is independently" and "each of... is independently" should be broadly interpreted. It can mean that the specific options expressed by the same symbols in different groups do not affect each other, or it can mean that the specific options expressed by the same symbols in the same group do not affect each other. For example, wherein each q is independently 0, 1, 2, or 3, and each R" is independently selected from hydrogen, deuterium, fluorine, chlorine, means that formula Q-1 represents a benzene ring having q substituents R", each of which can be the same or different, and the options for each R" do not affect each other; formula Q-2 represents a biphenyl in which each benzene ring has q substituents R", and the number q of R" substituents on the two benzene rings can be the same or different, and each R" can be the same or different, and the options for each R" do not affect each other.

[0038] In the present application, the term "substituted or unsubstituted" means that the functional group described after the term can or can not have a substituent (hereinafter, the substituent will be collectively referred to as Rc for convenience of description). For example, "substituted or unsubstituted aryl" means aryl having a substituent Rc or aryl without a substituent. The above-mentioned substituent Rc can be, for example, deuterium, a cyano group, a halogen group, an alkyl group having 1 to 10 carbon atoms, a haloalkyl group having 1 to 10 carbon atoms, a deuterated alkyl group having 1 to 10 carbon atoms, a trialkylsilyl group having 3 to 12 carbon atoms, an aryl group having 6 to 20 carbon atoms, a deuterated aryl group having 6 to 20 carbon atoms, a heteroaryl group having 3 to 20 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, or the like. The number of substitutions can be one or more.

[0039] In the present application, "a plurality of" means 2 or more, such as 2, 3, 4, 5, 6, and the like.

[0040] In the present application, the number of carbon atoms of a substituted or unsubstituted functional group refers to the total number of carbon atoms.

[0041] The hydrogen atoms in the structure of the compounds of the present application include various isotopes of the hydrogen element, such as hydrogen (H), deuterium (D), or tritium (T).

[0042] "D" in the structural formula of the compounds of the present application means deuterium.

[0043] In the present application, an aryl group refers to an optional functional group or substituent derived from an aromatic carbocyclic ring. The aryl group can be a monocyclic aryl group (e.g., phenyl) or a polycyclic aryl group, in other words, the aryl group can be a monocyclic aryl group, a fused ring aryl group, two or more monocyclic aryl groups linked by carbon-carbon bonds, a monocyclic aryl group and a fused ring aryl group linked by carbon-carbon bonds, or two or more fused ring aryl groups linked by carbon-carbon bonds. That is, unless otherwise specified, two or more aromatic groups linked by carbon-carbon bonds can also be regarded as an aryl group of the present application. Among them, the fused ring aryl group can include, for example, a bicyclic fused aryl group (e.g., naphthyl), a tricyclic fused aryl group (e.g., phenanthryl, fluorenyl, anthryl), and the like. The aryl group does not contain heteroatoms such as B, N, O, S, P, Se, and Si. Examples of the aryl group include, but are not limited to, phenyl, naphthyl, fluorenyl, spirobifluorenyl anthryl, phenanthryl, biphenyl, terphenyl, triphenylenyl pyrenyl, benzophenanthryl, chrysenyl, fluorenyl, spirobifluorenyl, and the like.

[0044] In the present application, an aryl group refers to an optional functional group or substituent derived from an aromatic carbocyclic ring. The aryl group can be a monocyclic aryl group (e.g., phenyl) or a polycyclic aryl group, in other words, the aryl group can be a monocyclic aryl group, a fused ring aryl group, two or more monocyclic aryl groups linked by carbon-carbon bonds, a monocyclic aryl group and a fused ring aryl group linked by carbon-carbon bonds, or two or more fused ring aryl groups linked by carbon-carbon bonds. That is, unless otherwise specified, two or more aromatic groups linked by carbon-carbon bonds can also be regarded as an aryl group of the present application. Among them, the fused ring aryl group can include, for example, a bicyclic fused aryl group (e.g., naphthyl), a tricyclic fused aryl group (e.g., phenanthryl, fluorenyl, anthryl), and the like. The aryl group does not contain heteroatoms such as B, N, O, S, P, Se, and Si. Examples of the aryl group include, but are not limited to, phenyl, naphthyl, fluorenyl, spirobifluorenyl

[0045] In the present application, terphenyl includes

[0046] In the present application, the number of carbon atoms of the substituted or unsubstituted aryl (arylene) group can be 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, or 30. In some embodiments, the substituted or unsubstituted aryl group is a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, in other embodiments, the substituted or unsubstituted aryl group is a substituted or unsubstituted aryl group having 6 to 25 carbon atoms, in other embodiments, the substituted or unsubstituted aryl group is a substituted or unsubstituted aryl group having 6 to 18 carbon atoms, in other embodiments, the substituted or unsubstituted aryl group is a substituted or unsubstituted aryl group having 6 to 15 carbon atoms.

[0047] In the present application, the fluorenyl group can be substituted with one or more substituents, and in the case where the above fluorenyl group is substituted, the substituted fluorenyl group can be: and the like, but is not limited thereto.

[0048] In the present application, as the substituent of aryl group, for example, but not limited to, phenyl, naphthyl, phenanthryl, biphenyl, fluorenyl, dimethylfluorenyl and the like.

[0049] In the present application, heteroaryl group refers to a monovalent aromatic ring or its derivative containing 1, 2, 3, 4, 5 or 6 heteroatoms in the ring, and the heteroatom can be one or more of B, O, N, P, Si, Se and S. The heteroaryl group can be a monocyclic heteroaryl group or a polycyclic heteroaryl group, in other words, the heteroaryl group can be a single aromatic ring system or a plurality of aromatic ring systems connected by carbon-carbon bonds, and any of the aromatic ring systems is an aromatic monocyclic ring or an aromatic fused ring. For example, the heteroaryl group can include thienyl, furanyl, pyrrolyl, imidazolyl, thiazolyl, oxazolyl, oxadiazolyl, triazolyl, pyridyl, bipyridyl, pyrimidyl, triazinyl, acridinyl, pyridazinyl, pyrazinyl, quinolyl, quinazolinyl, quinoxalinyl, phenoxazinyl, phthalazinyl, pyridopyrimidyl, pyridopyrazinyl, pyrazinopyrazinyl, isoquinolyl, indolyl, carbazolyl, benzoxazolyl, benzimidazolyl, benzothiazolyl, benzocarbazolyl, benzothiophenyl, dibenzothiophenyl, thienothiophenyl, benzofuranyl, phenanthrolinyl, isoxazolyl, thiadiazolyl, phenothiazinyl, silafluorenyl, dibenzofuranyl, and N-phenylcarbazolyl, N-pyridylcarbazolyl, N-methylcarbazolyl, and the like, but not limited thereto.

[0050] In the present application, the heteroaryl group referred to herein refers to a divalent or multivalent group formed by further losing one or more hydrogen atoms from the heteroaryl group.

[0051] In the present application, the number of carbon atoms of the substituted or unsubstituted heteroaryl (heteroarylene) group can be selected from 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 or 30. In some embodiments, the substituted or unsubstituted heteroaryl group is a substituted or unsubstituted heteroaryl group having a total number of carbon atoms of 3 to 30, in other embodiments, the substituted or unsubstituted heteroaryl group is a substituted or unsubstituted heteroaryl group having a total number of carbon atoms of 12 to 18, and in other embodiments, the substituted or unsubstituted heteroaryl group is a substituted or unsubstituted heteroaryl group having a total number of carbon atoms of 5 to 12.

[0052] In the present application, as the substituent of heteroaryl group, for example, but not limited to, pyridyl, carbazolyl, dibenzothiophenyl, dibenzofuranyl, benzoxazolyl, benzothiazolyl, benzimidazolyl.

[0053] In the present application, the substituted heteroaryl group can be a heteroaryl group in which one or more hydrogen atoms is replaced with a group such as a deuterium atom, a halogen group, a cyano group, an aryl group, a heteroaryl group, a trialkylsilyl group, an alkyl group, a cycloalkyl group, a halogenated alkyl group, and the like.

[0054] In the present application, the alkyl group having 1 to 10 carbon atoms can include a linear alkyl group having 1 to 10 carbon atoms and a branched alkyl group having 3 to 10 carbon atoms. The number of carbon atoms of the alkyl group can be, for example, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10. Specific examples of the alkyl group include, but are not limited to, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, t-butyl, n-pentyl, isopentyl, neopentyl, n-hexyl, and the like.

[0055] In the present application, the halogen group can be, for example, fluorine, chlorine, bromine, or iodine.

[0056] In the present application, specific examples of the trialkylsilyl group include, but are not limited to, trimethylsilyl, triethylsilyl, and the like.

[0057] In the present application, specific examples of the haloalkyl group include, but are not limited to, trifluoromethyl.

[0058] In the present application, the cycloalkyl group having 3 to 10 carbon atoms can have, for example, 3, 4, 5, 6, 7, 8, or 10 carbon atoms. Specific examples of the cycloalkyl group include, but are not limited to, cyclopentyl, cyclohexyl, adamantyl, and the like.

[0059] In the present application, the deuterated alkyl group having 1 to 10 carbon atoms can have, for example, 1, 2, 3, 4, 5, 6, 7, 8, or 10 carbon atoms. Specific examples of the deuterated alkyl group include, but are not limited to, trideuteromethyl.

[0060] In the present application, the haloalkyl group having 1 to 10 carbon atoms can have, for example, 1, 2, 3, 4, 5, 6, 7, 8, or 10 carbon atoms. Specific examples of the haloalkyl group include, but are not limited to, trifluoromethyl.

[0061] In the present application, the deuterated aryl group having 6 to 20 carbon atoms can have, for example, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or 20 carbon atoms. Specific examples of the deuterated aryl group include, but are not limited to, penta-deuterophenyl, tri-deuterophenyl, and the like.

[0062] In the present application, a ring system formed by n atoms is an n-membered ring. For example, a phenyl group is a 6-membered ring. A 5- to 13-membered ring refers to a cyclic group having 5 to 13 ring atoms. Examples of the 5- to 13-membered ring include a cyclopentane ring (5-membered ring), a cyclohexane ring (6-membered ring), a benzene ring (6-membered ring), a naphthalene ring (10-membered ring), a fluorene ring (13-membered ring), and the like.

[0063] In the present application, refers to a chemical bond to which other groups are mutually connected.

[0064] In the present application, the indefinite position connection bond refers to a single bond extending from a ring system which indicates that one end of the bond can be attached to any position in the ring system through which the bond runs, and the other end is attached to the remainder of the compound molecule. For example, as shown in the following formula (f), the naphthyl group represented by formula (f) is attached to the remainder of the molecule by two indefinite bonds that run through the bicyclic ring system, and the meaning represented thereby includes any of the possible attachment modes shown in formulae (f-1) to (f-10):

[0065] For another example, as shown in the following formula (X'), the dibenzofuranyl group represented by formula (X') is attached to the remainder of the molecule by one indefinite bond that runs from the middle of one of the phenyl rings, and the meaning represented thereby includes any of the possible attachment modes shown in formulae (X'-1) to (X'-4):

[0066] An indefinite substituent in the present application refers to a substituent that is attached by a single bond running from the center of a ring system, and indicates that the substituent can be attached to any possible position in the ring system. For example, as shown in the following formula (Y), the substituent R' represented by formula (Y) is attached to the quinoline ring by an indefinite bond, and the meaning represented thereby includes any of the possible attachment modes shown in formulae (Y-1) to (Y-7):

[0067] In some embodiments, the organic compound provided in the present application is selected from the structures represented by formula I-1, formula I-2, formula I-3, or formula I-4:

[0068] In some embodiments, L, L1, and L2 are the same or different, and each is independently selected from a single bond, a substituted or unsubstituted arylene group having a carbon atom number of 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, or 30, a substituted or unsubstituted heteroarylene group having a carbon atom number of 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, or 30.

[0069] In some embodiments, L, L1, and L2 are the same or different, and each is independently selected from a single bond, a substituted or unsubstituted arylene group having a carbon atom number of 6 to 18, a substituted or unsubstituted heteroarylene group having a carbon atom number of 5 to 18.

[0070] In some embodiments, the substituents in L, L1, and L2are each independently selected from deuterium, fluorine, cyano, alkyl of 1 to 4 carbon atoms, haloalkyl of 1 to 4 carbon atoms, deuterated alkyl of 1 to 4 carbon atoms, trialkylsilyl of 3 to 7 carbon atoms, aryl of 6 to 12 carbon atoms, or deuterated aryl of 6 to 12 carbon atoms.

[0071] In some embodiments, L, L1, and L2are the same or different and each independently a single bond, substituted or unsubstituted phenylene, substituted or unsubstituted naphthylene, substituted or unsubstituted biphenylene, substituted or unsubstituted phenanthrylene, substituted or unsubstituted fluorenylene, substituted or unsubstituted pyridylene, substituted or unsubstituted dibenzofuranylene, substituted or unsubstituted dibenzothiophenylene, substituted or unsubstituted carbazolylene.

[0072] In some embodiments, the substituents in L, L1, and L2are the same or different and each independently selected from deuterium, fluorine, cyano, methyl, ethyl, isopropyl, tert-butyl, trimethylsilyl, trideuteromethyl, pentadeuterophenyl, phenyl, or naphthyl.

[0073] In some embodiments, L1and L2are the same or different and each independently selected from a group consisting of a single bond or:

[0074] In some embodiments, L is selected from a group consisting of a single bond or:

[0075] In some embodiments, L1and L2are the same or different and each independently selected from a group consisting of a single bond or:

[0076] In some embodiments, L is selected from a group consisting of a single bond or:

[0077] In some embodiments, Ar1is selected from substituted or unsubstituted aryl of 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, or 30 carbon atoms, or substituted or unsubstituted heteroaryl of 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, or 30 carbon atoms.

[0078] In some embodiments, Ar2is selected from substituted or unsubstituted aryl having a carbon count of 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, or 30, or substituted or unsubstituted heteroaryl having a carbon count of 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, or 30.

[0079] In some embodiments, Ar1is selected from substituted or unsubstituted aryl having a carbon count of 10 to 25 or substituted or unsubstituted heteroaryl having a carbon count of 12 to 18; and Ar2is selected from substituted or unsubstituted aryl having a carbon count of 6 to 25 or substituted or unsubstituted heteroaryl having a carbon count of 12 to 18.

[0080] In some embodiments, the substituents in Ar1and Ar2are the same or different, and each is independently selected from deuterium, a halogen group, a cyano group, a haloalkyl group having a carbon count of 1 to 4, a deuterated alkyl group having a carbon count of 1 to 4, an alkyl group having a carbon count of 1 to 4, a cycloalkyl group having a carbon count of 5 to 10, an aryl group having a carbon count of 6 to 15, a heteroaryl group having a carbon count of 5 to 12, a trialkylsilyl group having a carbon count of 3 to 7, or a deuterated aryl group having a carbon count of 6 to 15, and optionally, any two adjacent substituents form a benzene ring or a fluorene ring.

[0081] In some embodiments, Ar1is selected from substituted or unsubstituted naphthyl, substituted or unsubstituted biphenyl, substituted or unsubstituted terphenyl, substituted or unsubstituted fluorenyl, substituted or unsubstituted phenanthryl, substituted or unsubstituted anthryl, substituted or unsubstituted pyrenyl, substituted or unsubstituted triphenylenyl, substituted or unsubstituted spirobifluorenyl, substituted or unsubstituted dibenzothiophenyl, substituted or unsubstituted dibenzofuranyl, substituted or unsubstituted carbazolyl.

[0082] In some embodiments, Ar2is selected from substituted or unsubstituted phenyl, substituted or unsubstituted naphthyl, substituted or unsubstituted biphenyl, substituted or unsubstituted terphenyl, substituted or unsubstituted fluorenyl, substituted or unsubstituted phenanthryl, substituted or unsubstituted anthryl, substituted or unsubstituted pyrenyl, substituted or unsubstituted triphenylenyl, substituted or unsubstituted spirobifluorenyl, substituted or unsubstituted dibenzothiophenyl, substituted or unsubstituted dibenzofuranyl, substituted or unsubstituted carbazolyl.

[0083] In some embodiments, the substituents in Ar1and Ar2are the same or different, and each is independently selected from deuterium, fluorine, cyano, methyl, ethyl, isopropyl, tert-butyl, trifluoromethyl, trideuteromethyl, trimethylsilyl, pentadeuteriophenyl, phenyl, or naphthyl.

[0084] In some embodiments, Ar1is selected from the group consisting of:

[0085] In some embodiments, Ar2is selected from the group consisting of:

[0086] In some embodiments, Ar1is selected from the group consisting of:

[0087] In some embodiments, Ar2is selected from the group consisting of:

[0088] In some embodiments, is selected from the group consisting of:

[0089] In some embodiments, is selected from the group consisting of:

[0090] In some embodiments, is selected from the group consisting of:

[0091] In some embodiments, is selected from the group consisting of:

[0092] In some embodiments, is selected from the group consisting of:

[0093] In some embodiments, the organic compound of the present application is selected from the group consisting of:

[0094] In a second aspect of the present application, an organic electroluminescent device is provided, comprising an anode, a cathode, and a functional layer disposed between the anode and the cathode; wherein the functional layer comprises the organic compound according to the first aspect of the present application.

[0095] The organic compound provided by the present application can be used to form at least one organic film layer in the functional layer, so as to improve the luminous efficiency and lifetime of the organic electroluminescent device.

[0096] In some embodiments, the functional layer comprises an organic light-emitting layer comprising the organic compound. The organic light-emitting layer can be composed of the organic compound provided by the present application, or composed of the organic compound provided by the present application and other materials.

[0097] According to a specific embodiment, the organic electroluminescent device is shown in FIG. 1, which can comprise an anode 100, a hole injection layer 310, a first hole transport layer 321, a light-emitting adjustment layer (also referred to as a hole auxiliary layer or a second hole transport layer) 322, an organic light-emitting layer 330, an electron transport layer 340, an electron injection layer 350, and a cathode 200, which are sequentially stacked.

[0098] In the present application, the anode 100 comprises an anode material, which is preferably a material with a large work function that facilitates hole injection into the functional layer. Specific examples of the anode material include: metals such as nickel, platinum, vanadium, chromium, copper, zinc, and gold or their alloys, metal oxides such as zinc oxide, indium oxide, indium tin oxide (ITO), and indium zinc oxide (IZO), combined metals and oxides such as ZnO:Al or SnO2:Sb, or conductive polymers such as poly(3-methylthiophene), poly[3,4-(ethylene-1,2-dioxy) thiophene] (PEDT), polypyrrole, and polyaniline, but are not limited thereto. In a preferred embodiment, a transparent electrode comprising indium tin oxide (ITO) is used as the anode.

[0099] In the present application, the first hole transport layer or the light-emitting adjustment layer can each comprise one or more hole transport materials, which can be selected from carbazole polymers, carbazole-linked triarylamine compounds, or other types of compounds, and can be selected from the following compounds or any combination thereof:

[0100] In one embodiment, the first hole transport layer 321 is composed of HT-1.

[0101] In one embodiment, the light-emitting adjustment layer 322 is composed of HT-2.

[0102] In an embodiment, a hole injection layer 310 is further provided between the anode 100 and the first hole transport layer 321 to enhance the ability of injecting holes into the first hole transport layer 321. The hole injection layer 310 can be selected from a dopamine derivative, a starburst arylamine compound, a phthalocyanine derivative, or other materials, which are not particularly limited in the present application. The material of the hole injection layer 310 can be selected from the following compounds or any combination thereof, for example:

[0103] In an embodiment, the hole injection layer 310 is composed of PD and HT-1.

[0104] In an embodiment, the organic light-emitting layer 330 can include the host material and the guest material. In an embodiment, the organic light-emitting layer 330 is composed of the host material and the guest material. The holes injected into the organic light-emitting layer 330 and the electrons injected into the organic light-emitting layer 330 can recombine to form excitons in the organic light-emitting layer 330. The excitons transfer energy to the host material, which further transfers energy to the guest material, so that the guest material can emit light.

[0105] In an embodiment, the host material of the organic light-emitting layer 330 can include a metal chelate compound, a bisstyryl derivative, an aromatic amine derivative, a dibenzofuran derivative, or other types of materials. In an embodiment, the host material includes the organic compound of the present application.

[0106] In an embodiment, the guest material of the organic light-emitting layer 330 can be a compound or derivative thereof having a condensed aryl ring, a compound or derivative thereof having a heteroaryl ring, an aromatic amine derivative, or other materials, which are not particularly limited in the present application. The guest material is also known as a dopant or a doping agent. According to the type of light emission, it can be classified into a fluorescent dopant and a phosphorescent dopant. For example, specific examples of the phosphorescent dopant include, but are not limited to,

[0107] In an embodiment of the present application, the organic electroluminescent device is a red organic electroluminescent device. In a more specific embodiment, the host material of the organic light-emitting layer 330 is composed of the organic compound. The guest material can be RD, for example.

[0108] In another embodiment, the host material of the organic light-emitting layer 330 includes the organic compound of the present application and RH-P The guest material can be RD, for example.

[0109] In an embodiment of the present application, the organic electroluminescent device is a green organic electroluminescent device. In a more specific embodiment, the host material of the organic light-emitting layer 330 comprises the organic compound of the present application. The guest material is, for example, fac-Ir(ppy)3.

[0110] The electron transport layer 340 can be a single layer structure or a multi-layer structure, which can comprise one or more electron transport materials selected from, but not limited to, BmPyPhB, LiQ, benzimidazole derivatives, oxadiazole derivatives, quinoxaline derivatives, triazine derivatives and other electron transport materials, which are not particularly limited in the present application. The material of the electron transport layer 340 comprises LiQ and other electron transport materials, which can be selected from, but not limited to, the following compounds:

[0111] In an embodiment of the present application, the electron transport layer 340 is composed of ET-1 and LiQ.

[0112] In the present application, the cathode 200 comprises a cathode material, which is a material with small work function that helps to inject electrons into the functional layer. Specific examples of the cathode material include, but are not limited to, metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin and lead or alloys thereof; or multi-layer materials such as LiF / Al, Liq / Al, LiO2 / Al, LiF / Ca, LiF / Al and BaF2 / Ca. In some embodiments, a metal electrode comprising magnesium and silver is used as the cathode.

[0113] In some embodiments, an electron injection layer 350 is further provided between the cathode 200 and the electron transport layer 340 to enhance the ability to inject electrons into the electron transport layer 340. The electron injection layer 350 can comprise inorganic materials such as alkali metal sulfides, alkali metal halides and the like, or can comprise complexes of alkali metals with organic substances. In an embodiment of the present application, the electron injection layer 350 comprises ytterbium (Yb).

[0114] The present application not only provides the organic electroluminescent device comprising the compound represented by Formula I for the organic light-emitting layer. The present application also provides an electronic device comprising the organic electroluminescent device of the present application.

[0115] According to an embodiment, as shown in FIG. 2, the provided electronic device is an electronic device 400. The electronic device 400 can be, for example, a display device, a lighting device, an optical communication device or other types of electronic devices, which can include, but are not limited to, computer screens, mobile phone screens, televisions, electronic paper, emergency lighting, optical modules and the like.

[0116] The synthesis of the organic compounds of the present application will now be described in detail with reference to the synthesis examples, but the present disclosure is not limited thereto.

[0117] Synthesis Example

[0118] It will be recognized by one of ordinary skill in the art that the chemical reactions described in the present application can be used to prepare a number of the heterocyclic compounds of the present application, and that other methods for preparing the compounds of the present application are also considered within the scope of the present application. For example, the synthesis of those compounds of the present application which are not specifically exemplified can be successfully performed by a person of ordinary skill in the art by applying the methods set forth in the present application or modifications thereof, employing appropriate synthetic methodology suitable for the synthesis of the compounds of the present application, including those described in the literature. The compounds of the present application which are not mentioned in the present application are prepared from commercially available starting materials using standard synthetic procedures.

[0119] Synthesis of Sub-a1:

[0120] Into a 500 mL three-necked flask, RM-1 (11.25 g, 50 mmol), RM-2 (11.35 g, 55 mmol), tetrakis(triphenylphosphine)palladium (0.58 g, 0.5 mmol), anhydrous sodium carbonate (10.60 g, 100 mmol), tetrabutylammonium bromide (TBAB, 1.61 g, 5 mmol), toluene (120 mL), anhydrous ethanol (30 mL) and deionized water (30 mL) were added successively under nitrogen atmosphere. The stirring was started and the reaction was heated to reflux for 8 h. After the system was cooled to room temperature, the mixture was extracted with dichloromethane (100 mL x 3 times), and the combined organic phase was dried over anhydrous magnesium sulfate. After filtration, the solvent was removed by distillation under reduced pressure to give a crude product. The crude product was purified by silica gel column chromatography using dichloromethane / n-heptane as the mobile phase to give Sub-a1 (10.27 g, yield 67%) as a white solid.

[0121] Referring to the synthesis of Sub-a1, Sub-a2 was synthesized by using the reactant A shown in Table 1 instead of RM-2.

[0122] Table 1: Synthesis of Sub-a2

[0123] Synthesis of Sub-b1:

[0124] Into a 1000 mL three-necked flask, Sub-b1 (39.84 g, 119 mmol), Eaton's reagent (4.5 mL) and chlorobenzene (500 mL) were added successively under nitrogen atmosphere, and the reaction was stirred at reflux for 4 h. After the reaction system was cooled to room temperature, the reaction solution was poured into 1000 mL deionized water, neutralized with saturated sodium hydroxide solution, and then extracted with dichloromethane (250 mL x 3 times). The combined organic phase was dried over anhydrous magnesium sulfate, filtered, and the solvent was removed by distillation under reduced pressure to obtain a crude product. The crude product was purified by silica gel column chromatography using dichloromethane / n-heptane as the mobile phase to obtain Sub-c1 (20.90 g, yield 58%) as a white solid.

[0125] Referring to the synthesis method of Sub-b1, Sub-b2 was synthesized by using the reactant B shown in Table 2 instead of Sub-a1.

[0126] Table 2: Synthesis of Sub-b2

[0127] Synthesis of Sub-c1:

[0128] Into a 1000 mL three-necked flask, Sub-b1 (39.84 g, 119 mmol), Eaton's reagent (4.5 mL) and chlorobenzene (500 mL) were added successively under nitrogen atmosphere, and the reaction was stirred at reflux for 4 h. After the reaction system was cooled to room temperature, the reaction solution was poured into 1000 mL deionized water, neutralized with saturated sodium hydroxide solution, and then extracted with dichloromethane (250 mL x 3 times). The combined organic phase was dried over anhydrous magnesium sulfate, filtered, and the solvent was removed by distillation under reduced pressure to obtain a crude product. The crude product was purified by silica gel column chromatography using dichloromethane / n-heptane as the mobile phase to obtain Sub-c1 (20.90 g, yield 58%) as a white solid.

[0129] Referring to the synthesis method of Sub-c1, Sub-c2 was synthesized by using the reactant C shown in Table 3 instead of Sub-b1.

[0130] Table 3: Synthesis of Sub-c2

[0131] Synthesis of Sub-d1:

[0132] Into a 500 mL three-necked flask, Sub-c1 (15.14 g, 50 mmol), bis(pinacolato)diboron (14.0 g, 55 mmol), potassium acetate (10.8 g, 110 mmol) and 1,4-dioxane (160 mL) were sequentially added under nitrogen atmosphere. The stirring and heating were started, and the system was warmed to 40 °C. Then tris(dibenzylideneacetone)dipalladium (Pd2(dba)3, 0.46 g, 0.50 mmol) and 2-dicyclohexylphosphino-2',4',6'-triisopropylbiphenyl (XPhos, 0.48 g, 1.0 mmol) were quickly added. The system was warmed to reflux, and the reaction was stirred overnight. After the system was cooled to room temperature, 200 mL of water was added, and the mixture was stirred thoroughly for 30 min. The mixture was filtered under reduced pressure. The filter cake was washed with deionized water until neutral, and then washed with 100 mL of anhydrous ethanol. Sub-d1 (15.18 g, 77% yield) was obtained as a white solid. The crude product was washed with n-heptane once, and then dissolved in 200 mL of toluene. The catalyst was removed by passing the solution through a silica gel column. Sub-d1 was obtained as a white solid after concentration.

[0133] Referring to the synthesis of Sub-d1, Sub-d2 was synthesized by using the reactants D shown in Table 4 instead of Sub-c1.

[0134] Table 4: Synthesis of Sub-d2

[0135] Synthesis of Sub-e1:

[0136] Into a 500 mL three-necked flask, RM-3 (17.14 g, 50 mmol), 4-chlorobenzeneboronic acid (8.60 g, 55 mmol), tetrakis(triphenylphosphine)palladium (0.58 g, 0.5 mmol), anhydrous sodium carbonate (10.60 g, 100 mmol), toluene (180 mL), anhydrous ethanol (45 mL), and deionized water (45 mL) were sequentially added under nitrogen atmosphere. The stirring and heating were started, and the system was warmed to reflux for 8 h. After the system was cooled to room temperature, the mixture was extracted with dichloromethane (100 mL x 3 times). The organic phases were combined and dried over anhydrous magnesium sulfate. The mixture was filtered, and the solvent was removed by distillation under reduced pressure to obtain the crude product. The crude product was purified by silica gel column chromatography using dichloromethane / n-heptane as the mobile phase to obtain Sub-e1 (14.24 g, 68% yield) as a white solid.

[0137] Referring to the synthesis of Sub-e1, Sub-e2 to Sub-e7 were synthesized by using the reactants E shown in Table 5 instead of RM-3, and the reactants F instead of 4-chlorobenzeneboronic acid.

[0138] Table 5: Synthesis of Sub-e2 to Sub-e7

[0139] Synthesis of Compound 1:

[0140] Into a 250 mL three-necked flask, Sub-dl (10.35 g, 26.25 mmol), RM-4 (8.95 g, 25 mmol), palladium acetate (42 mg, 0.25 mmol), 2-dicyclohexylphosphino-2',4',6'-triisopropylbiphenyl (XPhos, 0.24 g, 0.5 mmol), anhydrous potassium carbonate (6.9 g, 50 mmol), tetrabutylammonium bromide (0.8 g, 2.5 mmol), toluene (100 mL), tetrahydrofuran (25 mL) and deionized water (25 mL) were added successively under nitrogen atmosphere. The stirring and heating were started and the temperature was raised to reflux for 16 h. After the system was cooled to room temperature, dichloromethane (100 mL x 3 times) was used to extract the product. The organic phase was combined and dried over anhydrous magnesium sulfate. After filtration, the solvent was removed by distillation under reduced pressure to obtain the crude product. The crude product was purified by silica gel column chromatography using dichloromethane / n-heptane as the mobile phase to obtain compound 1 (10.61 g, yield 72%, m / z = 590.29 [M+H] + ) as yellow-green solid.

[0141] Referring to the synthesis of compound 1, the reactants G and H shown in Table 6 were used to replace Sub-dl and RM-4 respectively to synthesize the compounds of the application in Table 6.

[0142] Table 6: Synthesis of some compounds of the application

[0143] Compound 269 NMR: 1 H-NMR (400 MHz, CD2Cl2) δ ppm: 8.95 (d, 1H), 8.89 (s, 1H), 8.84 (s, 1H), 8.60-8.50 (m, 3H), 8.45-8.29 (m, 3H), 8.20 (d, 1H), 8.16-7.98 (m, 4H), 7.95 (d, 1H), 7.69-7.60 (m, 2H), 7.58-7.29 (m, 8H).

[0144] Organic electroluminescent device preparation and evaluation:

[0145] Example 1: Preparation of a red organic electroluminescent device

[0146] The anode was first pretreated by the following process: the thickness of the layers was in the order of 100 nm of PEDOT:PSS, 100 nm of HTM, 100 nm of EML, 100 nm of ETL and 100 nm of LiF / Al. The ITO / Ag / ITO substrate is surface treated by UV ozone and O2:N2 plasma to increase the work function of the anode, and the ITO substrate surface is cleaned by organic solvent to remove impurities and oil on the ITO substrate surface.

[0147] PD:HT-1 is co-evaporated on the experimental substrate (anode) at a deposition rate ratio of 2%:98% to form a hole injection layer (HIL) with a thickness of HT-1 is vacuum evaporated on the hole injection layer to form a first hole transport layer with a thickness of .

[0148] HT-2 is vacuum evaporated on the first hole transport layer to form a light-emitting adjustment layer with a thickness of .

[0149] Then, compound 1:RH-P:RD is co-evaporated on the light-emitting adjustment layer at a ratio of 49%:49%:2% to form a red light-emitting layer (EML) with a thickness of .

[0150] Compound ET-1 and LiQ are co-evaporated on the light-emitting layer at a deposition rate ratio of 1:1 to form an electron transport layer (ETL) with a thickness of Yb is evaporated on the electron transport layer to form an electron injection layer (EIL) with a thickness of Mg and Ag are co-evaporated on the electron injection layer at a deposition rate ratio of 1:9 to form a cathode with a thickness of .

[0151] In addition, CP is vacuum evaporated on the cathode to a thickness of , thereby completing the manufacture of the red organic electroluminescent device.

[0152] Examples 2-64

[0153] An organic electroluminescent device is prepared by the same method as in Example 1, except that the compound X in Table 7 below is used instead of compound 1 in Example 1 when preparing the light-emitting layer.

[0154] Comparative Examples 1-3

[0155] An organic electroluminescent device is prepared by the same method as in Example 1, except that the compound A, compound B, and compound C in Table 7 below are used instead of compound 1 in Example 1, respectively, when preparing the light-emitting layer.

[0156] In the preparation of each of the examples and comparative examples, the compounds used have the following structures:

[0157] The red organic electroluminescent devices prepared in Examples 1-64 and Comparative Examples 1-3 were tested for performance, specifically for IVL performance at 10 mA / cm 2 The T95 device lifetime was tested at 20 mA / cm 2 and the results are shown in Table 7.

[0158] Table 7

[0159] As can be seen from Table 7, compared to Comparative Examples 1-3, when the compound of the present application is used as the host material of the red organic electroluminescent device, the efficiency is increased by at least 12.3%, and the lifetime is increased by at least 13.1%.

[0160] The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the specific details of the above-described embodiments, and various simple modifications can be made to the technical solutions of the present application within the technical concept of the present application, and these simple modifications all belong to the protection scope of the present application.

Claims

1. An organic compound having a structure as shown in the following formula II: In formula II, D represents deuterium, and n represents the number of deuterium atoms, selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or 11; T is selected from O or S; L, L1 and L2 are the same or different and are each independently selected from a single bond, a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, or a substituted or unsubstituted heteroarylene group having 3 to 30 carbon atoms; The substituents in L, L1 and L2 are the same or different and are independently selected from deuterium, cyano, halogen, alkyl having 1 to 10 carbon atoms, haloalkyl having 1 to 10 carbon atoms, deuterated alkyl having 1 to 10 carbon atoms, trialkylsilyl having 3 to 12 carbon atoms, aryl having 6 to 20 carbon atoms, deuterated aryl having 6 to 20 carbon atoms, heteroaryl having 3 to 20 carbon atoms or cycloalkyl having 5 to 10 carbon atoms; Ar1 is selected from a substituted or unsubstituted aryl group having 10 to 30 carbon atoms, or a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms; Ar2 is selected from a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, or a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms; The substituents in Ar1 and Ar2 are the same or different and are independently selected from hydrogen, deuterium, cyano, a halogen group, an alkyl group having 1 to 10 carbon atoms, a haloalkyl group having 1 to 10 carbon atoms, a deuterated alkyl group having 1 to 10 carbon atoms, a trialkylsilyl group having 3 to 12 carbon atoms, an aryl group having 6 to 20 carbon atoms, a deuterated aryl group having 6 to 20 carbon atoms, a heteroaryl group having 3 to 20 carbon atoms or a cycloalkyl group having 5 to 10 carbon atoms; optionally, any two adjacent substituents form a saturated or unsaturated 5-13 membered ring.

2. The organic compound according to claim 1, wherein The organic compound has a structure as shown in the following formula I:

3. The organic compound according to claim 1 or 2, wherein L, L1 and L2 are the same or different and are each independently selected from a single bond, a substituted or unsubstituted phenylene group, a substituted or unsubstituted naphthylene group, a substituted or unsubstituted biphenylene group, a substituted or unsubstituted phenanthrenyl group, a substituted or unsubstituted fluorenylene group, a substituted or unsubstituted pyridinylene group, a substituted or unsubstituted dibenzofuranylene group, a substituted or unsubstituted dibenzothiophenylene group, or a substituted or unsubstituted carbazolylene group; Optionally, the substituents in L, L1 and L2 are the same or different and are each independently selected from deuterium, fluorine, cyano, methyl, ethyl, isopropyl, tert-butyl, trimethylsilyl, trideuteromethyl, pentadeuterophenyl, phenyl or naphthyl.

4. The organic compound according to any one of claims 1 to 3, wherein L1 and L2 are the same or different and are each independently selected from the group consisting of a single bond or the following groups: Optionally, L is selected from the group consisting of a single bond or the following groups:

5. The organic compound according to any one of claims 1 to 4, wherein Ar1 is selected from substituted or unsubstituted naphthyl, substituted or unsubstituted biphenyl, substituted or unsubstituted terphenyl, substituted or unsubstituted fluorenyl, substituted or unsubstituted phenanthrenyl, substituted or unsubstituted anthracenyl, substituted or unsubstituted pyrenyl, substituted or unsubstituted triphenylene, substituted or unsubstituted spirobifluorenyl, substituted or unsubstituted dibenzothiophenyl, substituted or unsubstituted dibenzofuranyl, substituted or unsubstituted carbazolyl; Alternatively, Ar2 is selected from substituted or unsubstituted phenyl, substituted or unsubstituted naphthyl, substituted or unsubstituted biphenyl, substituted or unsubstituted terphenyl, substituted or unsubstituted fluorenyl, substituted or unsubstituted phenanthrenyl, substituted or unsubstituted anthracenyl, substituted or unsubstituted pyrenyl, substituted or unsubstituted triphenylene, substituted or unsubstituted spirobifluorenyl, substituted or unsubstituted dibenzothiophenyl, substituted or unsubstituted dibenzofuranyl, substituted or unsubstituted carbazolyl; Optionally, the substituents in Ar1 and Ar2 are the same or different and are each independently selected from deuterium, fluorine, cyano, methyl, ethyl, isopropyl, tert-butyl, trifluoromethyl, trideuteromethyl, trimethylsilyl, pentadeuterophenyl, phenyl or naphthyl.

6. The organic compound according to any one of claims 1 to 5, wherein Ar1 is selected from the group consisting of: Optionally, Ar2 is selected from the group consisting of:

7. The organic compound according to any one of claims 1 to 6, wherein Selected from the group consisting of: Optionally, Selected from the group consisting of:

8. The organic compound according to any one of claims 1 to 7, wherein Selected from the group consisting of:

9. The organic compound according to any one of claims 1 to 8, wherein The organic compound is selected from the group consisting of the following compounds:

10. An organic electroluminescent device comprising an anode and a cathode disposed opposite to each other, and a functional layer disposed between the anode and the cathode; characterized in that: The functional layer comprises the organic compound according to any one of claims 1 to 9; Optionally, the functional layer includes an organic light-emitting layer, and the organic light-emitting layer contains the organic compound.

11. An electronic device, characterized in that: The organic electroluminescent device according to claim 10 is included.

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