Organic compound, organic electroluminescent component, and electronic device

Abstract

The present application relates to the technical field of organic electroluminescent materials, and provides an organic compound, and an organic electroluminescent component comprising same, and an electronic device. The organic compound has a structure represented by formula 1. The arylamine compound of the present application comprises a phenanthro[1,2-b]benzofuran core structure. When the compound of the present application is used as a host material of a light-emitting layer, the charge carrier balance in the light-emitting layer can be ameliorated, the charge carrier recombination region can be widened, the exciton generation and utilization efficiency can be improved, and the component light-emitting efficiency and service life of a device are enhanced.

Description

Organic compounds, organic electroluminescent devices and electronic devices

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. CN202411328507.X, filed on September 23, 2024, the contents of which are incorporated herein by reference in their entirety as part of this application. 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 comprising the same and an electronic device. BACKGROUND

[0004] With the development of electronic technology and the progress of material science, the application range of electronic components and devices for realizing electroluminescence or photoelectric conversion is more and more extensive. An organic electroluminescent device (OLED) generally comprises a cathode and an anode arranged oppositely, and a functional layer arranged between the cathode and the anode. The functional layer is composed of multiple organic or inorganic film layers, and generally comprises an organic light-emitting layer, a hole transport layer, an electron transport layer, etc. When a voltage is applied to the cathode and the anode, an electric field is generated between the two electrodes. Under the action of the electric field, electrons on the cathode side move to the electroluminescent layer, and holes on the anode side also move to the electroluminescent layer. The electrons and holes combine in the organic electroluminescent layer to form excitons. The excitons in the excited state release energy to the outside, thereby making the electroluminescent layer emit light.

[0005] The most important problems in the existing organic electroluminescent devices are the service life and the efficiency. With the large-area display, the driving voltage is also increased, and the luminous efficiency and the current efficiency also need to be improved. Therefore, it is necessary to continue to develop new materials to further improve the performance of the organic electroluminescent device. SUMMARY

[0006] In view of the above problems existing in the prior art, the purpose of the present application is to provide an organic compound, an electronic element and an electronic device comprising the same, which is used in an organic electroluminescent device and can improve the performance of the device.

[0007] According to a first aspect of the present application, an organic compound is provided, the organic compound has a structure represented by Formula 1:

[0008] wherein 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 6 to 30 carbon atoms, or a substituted or unsubstituted heteroarylene group having 3 to 30 carbon atoms;

[0009] Ar1 and Ar2 may be the same or different, and each is independently selected from substituted or unsubstituted aryl groups with 6 to 30 carbon atoms, or substituted or unsubstituted heteroaryl groups with 3 to 30 carbon atoms.

[0010] The substituents in L, L1, L2, Ar1, and Ar2 may be the same or different, and each is independently selected from deuterium, cyano, halogen group, alkyl with 1 to 10 carbon atoms, haloalkyl with 1 to 10 carbon atoms, deuteratedalkyl with 1 to 10 carbon atoms, trialkylsilyl with 3 to 12 carbon atoms, aryl with 6 to 18 carbon atoms, deuteratedaryl with 6 to 18 carbon atoms, heteroaryl with 3 to 12 carbon atoms, or cycloalkyl with 5 to 10 carbon atoms; optionally, any two adjacent substituents in Ar1 and Ar2 form a saturated or unsaturated 5 to 13-membered ring;

[0011] R1 is selected from hydrogen or deuterium;

[0012] D represents deuteration, and m and n represent the number of D substitutions, respectively. m is selected from 0, 1, 2, 3, 4, 5 or 6, and n is selected from 0, 1, 2, 3 or 4.

[0013] According to a second aspect of this application, an organic electroluminescent device is provided, comprising an anode and a cathode disposed opposite to each other, and a functional layer disposed between the anode and the cathode; the functional layer comprising the aforementioned organic compound.

[0014] According to a third aspect of this application, an electronic device is provided, including the organic electroluminescent device described in the second aspect.

[0015] The compound structure of this application contains a parent structure of phenanthrene[1,2-b]benzofuran, which is connected to a triazine fragment via its carbon atom at position 7, serving as an electron-transporting luminescent host material. On one hand, the parent structure of phenanthrene[1,2-b]benzofuran... The compound possesses a suitable first excited triplet energy level, making it suitable as a fragment for the host luminescent material. Furthermore, the phenanthrene[1,2-b]benzofuran core has a large conjugated area, which helps enhance intermolecular packing of the target compound and increase its charge carriers. Finally, the hydrogen atoms at positions 6 and 8 of the phenanthrene[1,2-b]benzofuran core provide steric hindrance to the triazine fragment connected to position 7, creating a dihedral angle between the core and the triazine fragment, resulting in good film-forming properties. When this compound is used as an electron transport material in a hybrid luminescent host material, it can improve the carrier balance in the luminescent layer, broaden the carrier recombination region, improve exciton generation and utilization efficiency, and enhance the stability of the luminescent layer film morphology, thereby improving the device's luminous efficiency and lifetime. Attached Figure Description

[0016] The accompanying drawings are included to provide a further understanding of the present application, and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and serve to explain the principles of the present application, but are not intended to limit the present application.

[0017] FIG. 1 is a schematic view of a structure of an organic electroluminescent device according to an embodiment of the present application.

[0018] FIG. 2 is a schematic view of a structure of an electronic device according to an embodiment of the present application.

[0019] Reference numeral 100, anode 200, cathode 300, functional layer 310, hole injection layer 321, hole transport layer 322, light-emitting auxiliary layer 330, organic light-emitting layer 340, electron transport layer 350, electron injection layer 400, electronic device DETAILED DESCRIPTION

[0020] Exemplary embodiments now will be described more fully hereinafter with reference to the accompanying drawings; however, this application should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art. Like reference numerals refer to like elements throughout.

[0021] In a first aspect, the present application provides an organic compound having a structure represented by Formula 1:

[0022] wherein 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 6 to 30 carbon atoms, or a substituted or unsubstituted heteroarylene group having 3 to 30 carbon atoms;

[0023] Ar1and Ar2are the same or different, and each is independently 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;

[0024] the substituents in L, L1, L2, Ar1and Ar2are 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 18 carbon atoms, a deuterated aryl group having 6 to 18 carbon atoms, a heteroaryl group having 3 to 12 carbon atoms, or a cycloalkyl group having 5 to 10 carbon atoms; optionally, any two adjacent substituents in Ar1and Ar2form a saturated or unsaturated 5- to 13-membered ring;

[0025] R1is selected from hydrogen or deuterium;

[0026] D represents deuterium, m and n represent the number of D substitutions, m is selected from 0, 1, 2, 3, 4, 5 or 6, and n is selected from 0, 1, 2, 3 or 4.

[0027] In the present application, the term "optionally" or "optionally" means that the event or environment described subsequently can occur or not occur. For example, "optionally, any two adjacent substituents form a ring" means that the two substituents can form a ring or not, i.e. including the case where the two adjacent substituents form a ring and the case where the two adjacent substituents do not form a ring. For another example, "optionally, any two adjacent substituents form a ring" means that any two adjacent substituents are connected to each other to form a ring, or any two adjacent substituents can exist independently. "Any two adjacent" can include two substituents on the same atom, and can also include two substituents on two adjacent atoms; wherein when 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; when two substituents are on two adjacent atoms, the two substituents can be fused into a ring.

[0028] In the present application, the description "each... is independently" used in the present application can be interchangeable with "each... is independently" and "each... is independently", which should be interpreted broadly, and can mean that in different groups, the specific options expressed by the same symbols do not affect each other, or can mean that in the same group, the specific options expressed by the same symbols 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, which means that formula Q-1 represents a benzene ring having q substituents R", each R" can be the same or different, and the options for each R" do not affect each other; formula Q-2 represents a biphenyl, each benzene ring has q substituents R", 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.

[0029] In the present application, the term "substituted or unsubstituted" used herein means that a functional group described later can or can not have a substituent (hereinafter, the substituent is collectively denoted as Rc). For example, "substituted or unsubstituted aryl" means aryl having a substituent Rc, or aryl without a substituent. The substituent Rc can be, for example, deuterium, a halogen group, a cyano group, a heteroaryl group, a trialkylsilyl group, an alkyl group, a haloalkyl group, a cycloalkyl group, or the like. The number of substitutions can be one or more.

[0030] In the present application, "a plurality of" means 2 or more, for example, 2, 3, 4, 5, 6, and the like.

[0031] In the present application, a saturated or unsaturated 5- to 13-membered ring means a ring containing 5 to 13 ring atoms; for example, it includes, but is not limited to, cyclopentane, cyclohexane, a benzene ring, a fluorene ring, and the like.

[0032] In the present application, a hydrogen atom in the structure of a compound means various isotopes of a hydrogen element, for example, hydrogen (H), deuterium (D), or tritium (T).

[0033] In the present application, the number of carbon atoms of a substituted or unsubstituted functional group means the total number of carbon atoms. For example, if L1 is a substituted arylene group having 12 carbon atoms, the total number of carbon atoms of the arylene group and the substituent thereon is 12.

[0034] In the present application, an aryl group means an optional functional group or substituent derived from an aromatic carbocyclic ring. The aryl group can be a monocyclic aryl group (for example, a phenyl group) 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 a carbon-carbon bond, a monocyclic aryl group and a fused ring aryl group linked by a carbon-carbon bond, or two or more fused ring aryl groups linked by a carbon-carbon bond. That is, unless otherwise specified, two or more aromatic groups linked by a carbon-carbon bond can also be regarded as an aryl group of the present application. The fused ring aryl group can include, for example, a bicyclic fused aryl group (for example, a naphthyl group), a tricyclic fused aryl group (for example, a phenanthryl group, a fluorenyl group, an anthryl group), 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 having 6 to 30 carbon atoms include, but are not limited to, a phenyl group, a naphthyl group, a fluorenyl group, a spirobifluorenyl group an anthryl group, a phenanthryl group, a biphenyl group, a terphenyl group, a triphenylene group a pyrenyl group a benzo[9,10]phenanthryl group, a pyrenyl group a benzo[9,10]phenanthryl group, a pyrenyl group a benzo[9,10]phenanthryl group, a pyrenyl group a benzo[c]phenanthryl group and the like.

[0035] In the present application, aryl group refers to a divalent or polyvalent group formed by further losing one or more hydrogen atoms from an aromatic group.

[0036] In the present application, terphenyl group includes

[0037] In the present application, the number of carbon atoms of a substituted aryl group refers to the total number of carbon atoms of the aryl group and the substituents on the aryl group, for example, a substituted aryl group having 18 carbon atoms refers to the total number of carbon atoms of the aryl group and the substituents being 18.

[0038] In the present application, the number of carbon atoms of a substituted or unsubstituted aryl (arylene) group can be 6, 8, 10, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, or 30, etc. 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 15 carbon atoms.

[0039] In the present application, fluorenyl group can be substituted by one or more substituents. In the case where the above-mentioned fluorenyl group is substituted, the substituted fluorenyl group can be: etc., but is not limited thereto.

[0040] In the present application, the aryl group as a substituent of L, L1, L2, Ar1, and Ar2, for example, but not limited to, phenyl, naphthyl, biphenyl, phenanthryl, biphenyl, fluorenyl, dimethylfluorenyl, and the like.

[0041] In the present application, heteroaryl refers to a monovalent aromatic ring or its derivative comprising 1, 2, 3, 4, 5, or 6 heteroatoms in the ring, and the heteroatoms can be one or more of B, O, N, P, Si, Se, and S. The heteroaryl can be a monocyclic heteroaryl or a polycyclic heteroaryl, in other words, the heteroaryl 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. Examples of heteroaryl groups having 3 to 30 carbon atoms include thienyl, furanyl, pyrrolyl, imidazolyl, thiazolyl, oxazolyl, oxadiazolyl, triazolyl, pyridyl, bipyridyl, pyrimidinyl, triazinyl, acridinyl, pyridazinyl, pyrazinyl, quinolinyl, quinazolinyl, quinoxalinyl, phenoxazinyl, phthalazinyl, pyridopyrimidinyl, pyridopyrazinyl, pyrazinopyrazinyl, isoquinolinyl, 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 are not limited thereto.

[0042] In the present application, the term "heteroaryl" refers to a divalent or polyvalent group formed by further losing one or more hydrogen atoms from a heteroaryl group.

[0043] 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, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, or 30, and the like. In some embodiments, the substituted or unsubstituted heteroaryl group is a substituted or unsubstituted heteroaryl group having a total of 3 to 30 carbon atoms; in other embodiments, the substituted or unsubstituted heteroaryl group is a substituted or unsubstituted heteroaryl group having a total of 3 to 18 carbon atoms; in other embodiments, the substituted or unsubstituted heteroaryl group is a substituted or unsubstituted heteroaryl group having a total of 5 to 12 carbon atoms.

[0044] In the present application, the heteroaryl group as a substituent of L, L1, L2, Ar1, and Ar2 is, for example, but not limited to, pyridyl, carbazolyl, quinolinyl, isoquinolinyl, phenanthrolinyl, benzoxazolyl, benzothiazolyl, benzimidazolyl, dibenzothiophenyl, and dibenzofuranyl.

[0045] 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. It should be understood that the number of carbon atoms of the substituted heteroaryl group refers to the total number of carbon atoms of the heteroaryl group and the substituents on the heteroaryl group.

[0046] 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.

[0047] In the present application, the halogen group can be, for example, fluorine, chlorine, bromine, or iodine.

[0048] In the present application, specific examples of the trialkylsilyl group include, but are not limited to, trimethylsilyl, triethylsilyl, and the like.

[0049] In the present application, the haloalkyl group having 1 to 10 carbon atoms has, for example, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 carbon atoms. Specific examples of the haloalkyl group include, but are not limited to, trifluoromethyl.

[0050] In the present application, the cycloalkyl group having 3 to 10 carbon atoms has, for example, 3, 4, 5, 6, 7, 8, 9, or 10 carbon atoms. Specific examples of the cycloalkyl group include, but are not limited to, cyclopentyl, cyclohexyl, adamantyl, and the like.

[0051] In the present application, the deuterated alkyl group having 1 to 10 carbon atoms has, for example, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 carbon atoms. Specific examples of the deuterated alkyl group include, but are not limited to, trideuteromethyl.

[0052] In the present application, the deuterated aryl group having 6 to 18 carbon atoms has, for example, 6, 7, 8, 9, 10, 11, 22, 13, 14, 15, 16, 17, or 18 carbon atoms. Specific examples of the deuterated aryl group include, but are not limited to, penta-deuterophenyl, nona-deuteronaphthyl, undeca-deuterobiphenyl, and the like.

[0053] 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 fluorene ring (13-membered ring), and the like.

[0054] In the present application, an indefinite single bond refers to a single bond that extends 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 extends, 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 through two indefinite bonds that extend 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):

[0055] 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 through one indefinite bond that extends 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):

[0056] An indefinite substituent in the present application refers to a substituent that is attached through a single bond that extends 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 through an indefinite bond, and the meaning represented thereby includes any of the possible attachment modes shown in formulae (Y-1) to (Y-7):

[0057] In some embodiments, Ar1and Ar2are the same or different, and each is independently selected from substituted or unsubstituted aryl having 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, or 25 carbon atoms, and substituted or unsubstituted heteroaryl having 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, or 24 carbon atoms.

[0058] In some embodiments, Ar1and Ar2are the same or different, and each is independently selected from substituted or unsubstituted aryl having 6 to 25 carbon atoms, and substituted or unsubstituted heteroaryl having 3 to 24 carbon atoms.

[0059] In some embodiments, the substituents in Ar1and Ar2are each independently selected from deuterium, a halogen group, a cyano group, a haloalkyl group having 1 to 4 carbon atoms, a deuterated alkyl group having 1 to 4 carbon atoms, an alkyl group having 1 to 4 carbon atoms, a cycloalkyl group having 5 to 10 carbon atoms, an aryl group having 6 to 15 carbon atoms, a heteroaryl group having 5 to 12 carbon atoms, a trialkylsilyl group having 3 to 8 carbon atoms, or a deuterated aryl group having 6 to 15 carbon atoms; optionally, any two adjacent substituents form a benzene ring or a fluorene ring.

[0060] In some embodiments, Ar1 and Ar2 may be the same or different, and each is independently selected from substituted or unsubstituted phenyl, substituted or unsubstituted biphenyl, substituted or unsubstituted terphenyl, substituted or unsubstituted naphthyl, substituted or unsubstituted anthraceneyl, substituted or unsubstituted phenanthyl, substituted or unsubstituted fluorenyl, substituted or unsubstituted spirodifluorenyl, substituted or unsubstituted triphenylene, substituted or unsubstituted pyrene, substituted or unsubstituted perylene, substituted or unsubstituted Benzyl, substituted or unsubstituted benzo[c]phenanthryl, substituted or unsubstituted dibenzothiophenyl, substituted or unsubstituted dibenzofuranyl, substituted or unsubstituted benzothiophenyl, substituted or unsubstituted benzofuranyl, substituted or unsubstituted benzothiazolyl, substituted or unsubstituted benzooxazolyl, substituted or unsubstituted carbazolyl.

[0061] In some embodiments, the substituents in Ar1 and Ar2 are each independently selected from deuterium, fluorine, cyano, trideuterated methyl, trimethylsilyl, trifluoromethyl, cyclopentyl, cyclohexyl, adamantyl, methyl, ethyl, isopropyl, tert-butyl, phenyl, naphthyl, pentadeuterated phenyl, nonadeuterated naphthyl, pyridyl, dibenzofuranyl, dibenzothiopheneyl, or carbazoyl; optionally, any two adjacent substituents in Ar1 and Ar2 form a benzene ring or a fluorene ring.

[0062] In some embodiments, Ar1 and Ar2 may be the same or different, and each is independently selected from the group consisting of:

[0063] In some embodiments, Ar1 and Ar2 may be the same or different, and each is independently selected from the group consisting of:

[0064] In some embodiments, L, L1, and L2 may be the same or different, and each is independently selected from single bonds, substituted or unsubstituted aryl groups with 6 to 15 carbon atoms, and substituted or unsubstituted heteroaryl groups with 12 to 18 carbon atoms.

[0065] In some embodiments, L, L1, and L2 may be the same or different, and each is independently selected from single bonds, substituted or unsubstituted aryl groups having 6, 7, 8, 9, 10, 11, 12, 13, 14, or 15 carbon atoms, and substituted or unsubstituted heteroaryl groups having 12, 13, 14, 15, 16, 17, or 18 carbon atoms.

[0066] In some embodiments, the substituents in L, L1and L2are each independently selected from the group consisting of deuterium, fluorine, cyano, alkyl group having 1 to 5 carbon atoms, trialkylsilyl group having 3 to 8 carbon atoms, fluoroalkyl group having 1 to 4 carbon atoms, deuterium- substituted alkyl group having 1 to 4 carbon atoms, penta-deuteriophenyl group, phenyl group or naphthyl group.

[0067] In some embodiments, L, L1and L2are the same or different and each is independently selected from the group consisting of a single bond, substituted or unsubstituted phenylene group, substituted or unsubstituted naphthylene group, substituted or unsubstituted biphenylene group, substituted or unsubstituted dithiophenylene group, substituted or unsubstituted difuranylene group, substituted or unsubstituted fluorenylene group, substituted or unsubstituted phenanthrylene group, substituted or unsubstituted carbazolylene group.

[0068] In some embodiments, the substituents in L, L1and L2are the same or different and each is independently selected from the group consisting of deuterium, fluorine, cyano, methyl group, ethyl group, isopropyl group, tert-butyl group, trifluoromethyl group, tri-deuteromethyl group, trimethylsilyl group, penta-deuteriophenyl group or phenyl group.

[0069] In some embodiments, L is selected from the group consisting of a single bond or the following groups:

[0070] In some embodiments, L is selected from the group consisting of a single bond or the following groups:

[0071] In some embodiments, L is selected from the group consisting of the following groups:

[0072] When L in the compound of the present application is selected from an arylene group, the carrier mobility of the compound is improved, and thus the light emitting efficiency of the device can be improved when the compound is applied to an electroluminescent device.

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

[0074] In some embodiments, L1and L2are the same or different and each is independently selected from the group consisting of a single bond or the following groups:

[0075] In some embodiments, are the same or different and each is independently selected from the group consisting of the following groups:

[0076] In some embodiments, the group in Formula 1 is selected from the group consisting of the following groups:

[0077] In some embodiments, the organic compound is selected from the following compounds:

[0078] 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.

[0079] 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.

[0080] In some embodiments, the functional layer comprises an organic light-emitting layer, and the organic light-emitting layer comprises the organic compound. The organic light-emitting layer can be composed of the organic compound provided by the present application, or can be composed of the organic compound provided by the present application and other materials.

[0081] According to a specific embodiment, the organic electroluminescent device is shown in FIG. 1. The organic electroluminescent device can comprise, in sequence, an anode 100, a hole injection layer 310, a hole transport layer 321, a light-emitting auxiliary layer (hole auxiliary layer) 322, an organic light-emitting layer 330, an electron transport layer 340, an electron injection layer 350, and a cathode 200.

[0082] In the present application, the anode 100 comprises an anode material, which is preferably a material having 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 alloys thereof; metal oxides such as zinc oxide, indium oxide, indium tin oxide (ITO), and indium zinc oxide (IZO); combinations of 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.

[0083] In the present application, the hole transport layer 321 can 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:

[0084] In one embodiment, the hole transport layer 321 can be composed of HT-1.

[0085] In one embodiment, the light-emitting auxiliary layer 322 is composed of HT-2.

[0086] In some embodiments, a hole injection layer 310 is further provided between the anode 100 and the hole transport layer 321 to enhance the ability of injecting holes into the hole transport layer 321. The hole injection layer 310 can be selected from diphenylamine derivatives, starburst arylamine compounds, phthalocyanine derivatives or other materials, which are not particularly limited in the present application. The material of the hole injection layer 310 is for example selected from the following compounds or any combination thereof:

[0087] In one embodiment, the hole injection layer 310 is composed of PD and HT-1.

[0088] In the present application, the organic light-emitting layer 330 can be composed of a single light-emitting material, or can include a host material and a guest material (i.e. a dopant material). In one embodiment, the organic light-emitting layer 330 is composed of a host material and a guest material, and holes injected into the organic light-emitting layer 330 and 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, the host material transfers energy to the guest material, and the guest material can then emit light.

[0089] The host material of the organic light-emitting layer 330 can include metal chelate compounds, bisstyryl derivatives, aromatic amine derivatives, dibenzofuran derivatives or other types of materials. In one embodiment, the host material includes an organic compound of the present application.

[0090] The guest material of the organic light-emitting layer 330 can be a compound or derivative thereof having condensed aryl rings, a compound or derivative thereof having heteroaryl rings, 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 material or a dopant. According to the type of light emission, it can be divided into fluorescent dopants and phosphorescent dopants. Specific examples of the phosphorescent dopant include, but are not limited to,

[0091] In one embodiment of the present application, the organic electroluminescent device is a red organic electroluminescent device.

[0092] In one embodiment, the host material of the organic light-emitting layer 330 includes an organic compound of the present application. The guest material is for example RD-1.

[0093] In an embodiment, the host material of the organic light-emitting layer 330 comprises the organic compound of the present application and

[0094] 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.

[0095] In an embodiment, 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, BTB, LiQ, benzimidazole derivatives, oxadiazole derivatives, quinoxaline derivatives or other electron transport materials, which are not particularly limited in the present application. The material of the electron transport layer 340 comprises, but is not limited to, the following compounds:

[0096] In an embodiment of the present application, the electron transport layer 340 can be composed of ET-1 and LiQ.

[0097] In the present application, the cathode 200 can comprise a cathode material, which is a material with small work function that is helpful for electron injection 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.

[0098] 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 of injecting electrons into the electron transport layer 340. The electron injection layer 350 can comprise inorganic materials such as alkali metal sulfides, alkali metal halides, etc., or can comprise complexes of alkali metals and organic matters. In an embodiment of the present application, the electron injection layer 350 can comprise ytterbium (Yb).

[0099] The third aspect of the present application provides an electronic device comprising the organic electroluminescent device of the second aspect of the present application.

[0100] According to an embodiment, as shown in FIG. 2, an electronic device provided is an electronic device 400 comprising the above-mentioned organic electroluminescent device. 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, etc.

[0101] The synthesis of the organic compounds of the present application will now be illustrated with the aid of the following synthetic examples, without the disclosure being limited in any way thereby.

[0102] Synthetic Examples

[0103] It will be recognized by one of ordinary skill in the art that the chemical reactions described in the present application can be conducted in any order unless otherwise specified. Also, the synthesis of the compounds of the present application can be achieved using other methods known to those of ordinary skill in the art.

[0104] Synthesis of Sub-a1:

[0105] Into a 500 mL three-necked flask, 2-bromo-1-naphthaldehyde (11.75 g, 50 mmol), benzofuran-2-boronic acid (8.90 g, 55 mmol), tetrakis(triphenylphosphine)palladium (0.58 g, 0.5 mmol), tetrabutylammonium bromide (TBAB, 1.61 g, 5 mmol), anhydrous sodium carbonate (10.60 g, 100 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), the organic phases were combined and dried over anhydrous magnesium sulfate, filtered and the solvent was removed 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 a white solid (9.10 g, 67% yield).

[0106] Synthesis of Sub-b1:

[0107] Into a 500 mL three-necked flask, was added (methoxymethyl)triphenylphosphonium chloride (51.25 g, 149.5 mmol), potassium tert-butoxide (18.10 g, 161 mmol) and anhydrous tetrahydrofuran (180 mL) successively under nitrogen atmosphere. The system was cooled to -15 °C and kept for 30 min. Then Sub-a1 (35.40 g, 130 mmol) was weighed and dissolved in anhydrous tetrahydrofuran (180 mL). The solution was added slowly into the reaction system by constant pressure dropping funnel. The temperature was kept at -15 °C during the dropping process. After the dropping was completed, the reaction was kept stirring at -15 °C for 1 h. Then the reaction system was allowed to warm up to room temperature. The reaction mixture was extracted with dichloromethane (200 mL x 3 times). The organic phases were combined and dried over anhydrous magnesium sulfate. The solvent was removed by filtration under reduced pressure to give a crude product. The crude product was purified by silica gel column chromatography using n-heptane / dichloromethane as the mobile phase to give Sub-b1 (24.20 g, yield 62%) as a gray-white solid.

[0108] Synthesis of Sub-c1:

[0109] Into a 1000 mL three-necked flask, was added Sub-b1 (35.74 g, 119 mmol), Eaton's reagent (4.5 mL) and chlorobenzene (400 mL) successively under nitrogen atmosphere. The system was heated to reflux and kept stirring for 4 h. After the reaction system was cooled to room temperature, the reaction mixture was poured into 1000 mL deionized water. The solution was neutralized with saturated sodium hydroxide aqueous solution. Then the solution was extracted with dichloromethane (250 mL x 3 times). The organic phases were combined and dried over anhydrous magnesium sulfate. The solvent was removed by filtration 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-c1 (26.50 g, yield 83%) as a white solid.

[0110] Synthesis of Sub-d1:

[0111] Into a 1000 mL three-necked flask, was added Sub-c1 (13.42 g, 50 mmol) and dichloromethane (150 mL) successively under nitrogen atmosphere. The system was cooled to 0 °C. N-bromosuccinimide (9.78 g, 55 mmol) was added in portions. After the addition was completed, the system was allowed to warm up to room temperature and kept stirring overnight. The reaction mixture was poured into 150 mL saturated sodium thiosulfate aqueous solution. The solution was stirred for 30 min. Then the solution was extracted with dichloromethane (150 mL x 3 times). The organic phases were combined and dried over anhydrous magnesium sulfate. The solvent was removed by filtration under reduced pressure to give a crude product. The crude product was purified by silica gel column chromatography using n-heptane as the mobile phase to give Sub-d1 (13.54 g, yield 78%) as a white solid.

[0112] Synthesis of Sub-d2:

[0113] Into a 100 mL three-necked flask was added Sub-d1 (8.68 g, 25 mmol) and 200 mL benzene-D6 under nitrogen atmosphere. After warming to 60 °C, triflic acid (22.51 g, 150 mmol) was added into the flask. The reaction was stirred at reflux for 24 h. After the reaction was cooled to room temperature, 50 mL heavy water was added into the flask. After stirring for 10 min, the reaction was neutralized with saturated aqueous K3PO4 solution. The organic layer was extracted with dichloromethane (50 mL x 3 times). The combined organic phase was dried over anhydrous sodium sulfate, filtered, and the solvent was removed under reduced pressure to give a crude product. The crude product was purified by silica gel column chromatography using n-heptane / dichloromethane as the mobile phase to give Sub-d2 (5.82 g, 65% yield) as a white solid.

[0114] Synthesis of Sub-e1:

[0115] Into a 500 mL three-necked flask was added Sub-d1 (24.30 g, 70 mmol) and anhydrous tetrahydrofuran (250 mL) under nitrogen atmosphere. The system was cooled to -78 °C, and n-butyllithium solution (2.0 M n-hexane solution, 38.5 mL, 77 mmol) was added dropwise. After the addition was completed, the system was stirred at -78 °C for 1 h. While maintaining the temperature at -78 °C, trimethyl borate (10.91 g, 105 mmol) was added dropwise. After the addition was completed, the system was stirred at -78 °C for another 1 h, and then the system was allowed to naturally warm to room temperature. Dilute hydrochloric acid (2 M, 58 mL) was added dropwise into the reaction solution, and the system was stirred for 30 min. The organic layer 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 under reduced pressure to give a crude product. The crude product was slurried with n-heptane, and the white solid product Sub-e1 (13.50 g, 62% yield) was obtained by filtration.

[0116] Referring to the synthesis method of Sub-e1, the difference is that the reactant A shown in Table 1 is used instead of Sub-d1 to synthesize Sub-e2.

[0117] Table 1: Synthesis of Sub-e2

[0118] Synthesis of Sub-f1:

[0119] Into a 500 mL three-necked flask, RM-1 (18.70 g, 50 mmol), 4-chlorobenzoic acid (8.60 g, 55 mmol), tetrakis(triphenylphosphine)palladium (0.58 g, 0.5 mmol), anhydrous sodium carbonate (10.60 g, 100 mmol), toluene (160 mL), anhydrous ethanol (40 mL) and deionized water (40 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 product was extracted with dichloromethane (100 mL x 3 times), the organic phases were combined and dried over anhydrous magnesium sulfate, filtered and 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-f1 (18.45 g, yield 82%) as a white solid.

[0120] Referring to the synthesis method of Sub-f1, the difference is that the reactant B shown in Table 2 is used instead of RM-1, and the reactant C is used instead of 4-chlorobenzoic acid, to synthesize Sub-f2 to Sub-f15.

[0121] Table 2: Synthesis of Sub-f2 to Sub-f15

[0122] Synthesis Example 1: Synthesis of compound 5:

[0123] Into a 250 mL three-necked flask, Sub-e1 (8.20 g, 26.25 mmol), RM-2 (8.60 g, 25 mmol), palladium acetate (42 mg, 0.25 mmol), 2-dicyclohexylphosphino-2',4',6' triisopropyl biphenyl (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 was started and the reaction was heated to reflux for 16 h. After the system was cooled to room temperature, the product was extracted with dichloromethane (100 mL x 3 times), the organic phases were combined and dried over anhydrous magnesium sulfate, filtered and 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 compound 5 (7.77 g, yield 54%, m / z = 576.20 [M+H] + ).

[0124] Referring to the synthesis method of compound 5, the difference is that the reactant D shown in Table 3 is used instead of Sub-e1, and the reactant E is used instead of RM-2, to synthesize the compounds of the application in Table 3.

[0125] Table 3: Synthesis of compounds of the application

[0126] Compound 32 NMR: 1 H-NMR (400 MHz, CD2Cl2) δ (ppm): 9.65 (s, 1H), 8.91-8.78 (m, 4H), 8.59 (d, 1H), 8.53 (d, 1H), 8.25-8.18 (m, 2H), 8.15 (d, 1H), 8.10 (d, 1H), 8.05 (d, 1H), 8.00 (d, 1H), 7.77 (d, 1H), 7.72-7.47 (m, 11H), 7.43 (t, 1H), 7.33 (t, 1H).

[0127] Organic electroluminescent device preparation and evaluation:

[0128] Example 1: Preparation of a red organic electroluminescent device

[0129] First, an anode pre-treatment was performed by the following process: on an ITO / Ag / ITO substrate with thicknesses of 1500 / 200 / 1500 A, respectively, surface treatment was performed using UV ozone and O2:N2 plasma to increase the work function of the anode, or organic solvent cleaning of the ITO substrate surface to remove impurities and oil on the ITO substrate surface. On the experimental substrate (anode), PD:HT-1 was co-evaporated at a ratio of 2%:98% of the evaporation rate to form a hole injection layer (HIL) with a thickness of 100 A, and then HT-1 was vacuum evaporated on the hole injection layer to form a hole transport layer with a thickness of 200 A.

[0130] On the hole transport layer, compound HT-2 was vacuum evaporated to form a light-emitting auxiliary layer with a thickness of 50 A.

[0131] Next, on the light-emitting auxiliary layer, compound 5:RH-P:RD-1 was co-evaporated at a ratio of 49%:49%:2% to form a red light-emitting layer (EML) with a thickness of 200 A.

[0132] On the light-emitting layer, compound ET-1 and LiQ were co-evaporated at a ratio of 1:1 of the evaporation rate to form a hole injection layer with a thickness of 100 A. ​​​​a thick electron transport layer (ETL), Yb is evaporated on the electron transport layer to form an electron injection layer (EIL) with a thickness of Then, magnesium (Mg) and silver (Ag) are mixed at a ratio of 1:9 and evaporated on the electron injection layer to form a cathode with a thickness of .

[0133] In addition, a CP with a thickness of is evaporated on the cathode to form a cover layer, thereby completing the manufacture of the red organic electroluminescent device.

[0134] Examples 2-52

[0135] An organic electroluminescent device is prepared by using the same method as in Example 1, except that the compound X in Table 4 below is used instead of the compound 5 in Example 1 when preparing the light-emitting layer.

[0136] Comparative Examples 1-4

[0137] An organic electroluminescent device is prepared by using the same method as in Example 1, except that the compound A, the compound B, the compound C, and the compound D are used instead of the compound 5 in Example 1 when preparing the light-emitting layer, respectively.

[0138] In each of the examples and comparative examples, the structures of the main materials used are as follows.

[0139] The red organic electroluminescent devices prepared in Examples 1-52 and Comparative Examples 1-4 are tested for performance. Specifically, the IVL performance of the devices is tested under the condition of 10 mA / cm 2 , the T95 device lifetime is tested under the condition of 20 mA / cm 2 , and the test results are shown in Table 4.

[0140] Table 4

[0141] As can be seen from Table 4 above, compared with Comparative Examples 1-4 using the compound A to the compound D, the luminous efficiency of the devices of Examples 1-52 using the compound of the present application as the electron transport type host material in the light-emitting layer host material of the red organic electroluminescent device is increased by at least 12.43%, and the T 95 95 device lifetime is increased by at least 12.35%.

[0142] The preferred embodiments of the present application are described in detail above with reference to the accompanying drawings, but the present application is not limited to the specific details in the above-described embodiments. 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. Organic compound, characterized in that, The organic compound has a structure represented by Formula 1: 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 6 to 30 carbon atoms, a substituted or unsubstituted heteroarylene group having 3 to 30 carbon atoms; Ar1and Ar2are the same or different, and each is independently selected from a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms; the substituents in L, L1, L2, Ar1, and Ar2are 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 18 carbon atoms, a deuterated aryl group having 6 to 18 carbon atoms, a heteroaryl group having 3 to 12 carbon atoms, or a cycloalkyl group having 5 to 10 carbon atoms; optionally, any two adjacent substituents in Ar1and Ar2form a saturated or unsaturated 5- to 13-membered ring; R1is selected from hydrogen or deuterium; D represents deuterium, m and n represent the number of D substitutions, m is selected from 0, 1, 2, 3, 4, 5, or 6, and n is selected from 0, 1, 2, 3, or 4.

2. The organic compound according to claim 1, wherein Ar1and Ar2are the same or different, and each is independently selected from substituted or unsubstituted phenyl, substituted or unsubstituted biphenyl, substituted or unsubstituted terphenyl, substituted or unsubstituted naphthyl, substituted or unsubstituted anthryl, substituted or unsubstituted phenanthryl, substituted or unsubstituted fluorenyl, substituted or unsubstituted spirobifluorenyl, substituted or unsubstituted triphenylenyl, substituted or unsubstituted pyrenyl, substituted or unsubstituted perylenyl, substituted or unsubstituted substituted or unsubstituted benzocycloheptyl, substituted or unsubstituted benzodicycloheptyl, substituted or unsubstituted benzocyclooctyl, substituted or unsubstituted benzodicyclooctyl, substituted or unsubstituted benzocycloheptyl, substituted or unsubstituted benzodicycloheptyl, substituted or unsubstituted benzocyclooctyl, substituted or unsubstituted benzodicyclooctyl, substituted or unsubstituted benzocycloheptyl, substituted or unsubstituted benzodicycloheptyl, substituted or unsubstituted benzocyclooctyl, substituted or unsubstituted benzodicyclooctyl, substituted or unsubstituted benzocycloheptyl, substituted or unsubstituted benzodicycloheptyl, substituted or unsubstituted benzocyclooctyl, substituted or unsubstituted benzodicyclooctyl, substituted or unsubstituted benzocycloheptyl, substituted or unsubstituted benzodicycloheptyl, substituted or unsubstituted benzocyclooctyl, substituted or unsubstituted benzodicyclooctyl, substituted or unsubstituted benzocycloheptyl, substituted or unsubstituted benzodicycloheptyl, substituted or unsubstituted benzocyclooctyl, substituted or unsubstituted benzodicyclooctyl, substituted or unsubstituted benzocycloheptyl, substituted or unsubstituted benzodicycloheptyl, substituted or unsubstituted benzocyclooctyl, substituted or unsubstituted benzodicyclooctyl, substituted or unsubstituted benzocycloheptyl, substituted or unsubstituted benzodicycloheptyl, substituted or unsubstituted benzocyclooctyl, substituted or unsubstituted benzodicyclooctyl, substituted or unsubstituted benzocycloheptyl, substituted or unsubstituted benzodicycloheptyl, substituted or unsubstituted Optionally, the substituents in Ar1and Ar2are each independently selected from deuterium, fluorine, a cyano group, a trideuteromethyl group, a trimethylsilyl group, a trifluoromethyl group, a cyclopentyl group, a cyclohexyl group, an adamantyl group, a methyl group, an ethyl group, an isopropyl group, a tert-butyl group, a phenyl group, a naphthyl group, a pentadeuterophenyl group, a nonadeuteronaphthyl group, a pyridyl group, a dibenzofuranyl group, a dibenzothiophenyl group, or a carbazolyl group; optionally, any two adjacent substituents in Ar1and Ar2form a benzene ring or a fluorene ring.

3. The organic compound according to claim 1 or 2, wherein L, L1, and L2 are the same or different, and each is 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 dibenzothiophene group, a substituted or unsubstituted dibenzofuran group, a substituted or unsubstituted fluorene group, a substituted or unsubstituted phenanthrene group, a substituted or unsubstituted carbazolylene group; Optionally, the substituents in L, L1, and L2 are the same or different, and each is independently selected from deuterium, fluorine, a cyano group, a methyl group, an ethyl group, an isopropyl group, a tert-butyl group, a trifluoromethyl group, a trideuteromethyl group, a trimethylsilyl group, a pentadeuterophenyl group, or a phenyl group.

4. The organic compound according to any one of Claims 1 to 3, wherein Ar1and Ar2are the same or different and each independently selected from the group consisting of:

5. The organic compound according to any one of claims 1 to 4, wherein L is selected from the group consisting of a single bond or the following groups: Optionally, L1and L2are the same or different and each is independently selected from the group consisting of a single bond or:

6. The organic compound according to any one of Claims 1 to 5, wherein identical or different and each independently selected from the group consisting of:

7. The organic compound according to any one of Claims 1 to 6, wherein the group of formula 1 is selected from the group consisting of:

8. The organic compound according to any one of Claims 1 to 7, wherein L is selected from the group consisting of a single bond or the following groups: Optionally, L1and L2are the same or different and each is independently selected from the group consisting of a single bond or:

9. The organic compound according to any one of claims 1 to 8, wherein Ar1and Ar2are the same or different and each independently selected from the group consisting of:

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

11. An organic electroluminescent device comprising an anode and a cathode disposed opposite 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 10; Optionally, the functional layer comprises a light-emitting layer, and the light-emitting layer comprises the organic compound.

12. An electronic device, characterized by The organic electroluminescent device according to claim 11. The organic electroluminescent device according to claim 11.

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