Organic compound, organic electroluminescent device, and electronic apparatus

Abstract

The present application relates to the technical field of organic electroluminescent materials and provides an organic compound, an organic electroluminescent device comprising same, and an electronic apparatus. An arylamine compound of the present application comprises a phenanthro[2,3-b]benzofuran core structure. When the compound of the present application is used as a host material of a luminescent layer, the carrier balance in the luminescent layer can be improved, the carrier recombination region can be widened, and the exciton generation and utilization efficiency can be enhanced, thereby improving the luminescent efficiency and service life of devices.

Description

Organic compounds and organic electroluminescent devices and electronic devices

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese patent application No. CN202411464642.7, filed on October 18, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of organic electroluminescent materials technology, and more particularly to an organic compound and an organic electroluminescent device and electronic device comprising the same. Background Technology

[0004] With the development of electronic technology and the advancement of materials science, the application range of electronic components used to achieve electroluminescence or photoelectric conversion is becoming increasingly wide. Organic light-emitting diodes (OLEDs) typically include a cathode and an anode positioned opposite each other, and a functional layer disposed between the cathode and anode. This functional layer consists of multiple organic or inorganic film layers and generally includes an organic electroluminescent layer, a hole transport layer, and an electron transport layer. When a voltage is applied to the cathode and anode, an electric field is generated between the two electrodes. Under the influence of the electric field, electrons on the cathode side move towards the organic electroluminescent layer, and holes on the anode side also move towards the organic electroluminescent layer. Electrons and holes combine in the organic electroluminescent layer to form excitons. The excitons are in an excited state and release energy outward, thereby causing the electroluminescent layer to emit light.

[0005] The main problems with existing organic electroluminescent devices are lifespan and efficiency. As displays become larger, driving voltages also increase, and luminous efficiency and current efficiency need to be improved. Therefore, it is necessary to continue to develop new materials to further improve the performance of organic electroluminescent devices. Summary of the Invention

[0006] In view of the above-mentioned problems existing in the prior art, the purpose of this application is to provide an organic compound and electronic components and devices containing the same, wherein the organic compound can be used in organic electroluminescent devices to improve the performance of the devices.

[0007] According to a first aspect of this application, an organic compound is provided, the organic compound having a structure as shown in Formula 1:

[0008] In Formula 1, one of Ra and Rb is selected from the structure shown in Formula 2, and the other is selected from hydrogen or deuterium;

[0009] R1~R 10 They may be the same or different, and each is independently selected from hydrogen or deuterium;

[0010] 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 30 carbon atoms, and substituted or unsubstituted heteroaryl groups with 3 to 30 carbon atoms.

[0011] 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.

[0012] 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, deuterated aryl 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.

[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 organic compound described in the first aspect.

[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 provided in this application contains a parent nucleus structure of phenanthrene[2,3-b]benzofuran, which... The triazine fragment is connected to the carbon atom at position 7 or 13, serving as an electron transport-type luminescent host material. On one hand, the parent nucleus of phenanthrene[2,3-b]benzofuran has a suitable first excited triplet energy level, making it suitable as a fragment for luminescent host material. On the other hand, the parent nucleus of phenanthrene[2,3-b]benzofuran has a large conjugated area, which helps to enhance the π-π stacking between molecules of the target compound and improve the charge carrier transport capability of the compound. In addition, when the triazine fragment is connected to position 13, the hydrogen atoms at positions 1 and 12 of the parent nucleus of phenanthrene[2,3-b]benzofuran have certain steric hindrance. When the triazine fragment is connected to position 7, the lone pair electrons on the hydrogen and oxygen atoms at position 6 have certain steric hindrance to the triazine fragment. Both specific connection methods can make a certain dihedral angle between the parent nucleus and the triazine fragment, resulting in good film-forming properties of the compound. When the compound of this application is used as an electron transport material in a hybrid red light host material, it can improve the carrier balance in the light-emitting layer, broaden the carrier recombination region, improve the exciton generation and utilization efficiency, and improve the stability of the light-emitting layer film morphology, thereby improving the device luminous efficiency and lifetime. Attached Figure Description

[0016] The accompanying drawings are provided to further understand this application and form part of the specification. They are used together with the following detailed description to explain this application, but do not constitute a limitation thereof.

[0017] Figure 1 is a schematic diagram of the structure of an organic electroluminescent device according to one embodiment of this application.

[0018] Figure 2 is a schematic diagram of the structure of an electronic device according to one embodiment of this application.

[0019] Reference numerals 100, 200, 300, 310, 321, 322, 330, 340, 350, 400, and 350 are also listed. The electronic device is also described. Detailed Implementation

[0020] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete, and will fully convey the concept of exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a full understanding of embodiments of this application.

[0021] In a first aspect, this application provides an organic compound having the structure shown in Formula 1:

[0022] In Formula 1, one of Ra and Rb is selected from the structure shown in Formula 2, and the other is selected from hydrogen or deuterium;

[0023] R1~R 10 They may be the same or different, and each is independently selected from hydrogen or deuterium;

[0024] 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 30 carbon atoms, and substituted or unsubstituted heteroaryl groups with 3 to 30 carbon atoms.

[0025] 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.

[0026] 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, deuterated aryl 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.

[0027] In this application, the terms "optionally" or "optionally" mean that the events or circumstances described below may or may not occur. For example, "optionally, any two adjacent substituents form a ring" means that the two substituents may or may not form a ring, that is, it includes both the scenario where two adjacent substituents form a ring and the scenario where two adjacent substituents do not form a ring. As 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 that any two adjacent substituents may exist independently. "Any two adjacent" can include having two substituents on the same atom, and can also include having one substituent on each of two adjacent atoms; wherein, when there are two substituents on the same atom, the two substituents can form a saturated or unsaturated spirocyclic ring with the atom they are connected to; when there is one substituent on each of two adjacent atoms, the two substituents can fuse into a ring.

[0028] In this application, the descriptive phrases "each...independently is," "...each independently is," and "...each independently is" are interchangeable and should be interpreted broadly. They can mean either that the specific options expressed by the same symbol in different groups do not affect each other, or that the specific options expressed by the same symbol in the same group do not affect each other. For example, In this formula, each q is independently 0, 1, 2 or 3, and each R is independently selected from hydrogen, deuterium, fluorine or chlorine. The meaning is as follows: Formula Q-1 indicates that there are q substituents R on the benzene ring. Each R can be the same or different, and the options of each R do not affect each other. Formula Q-2 indicates that there are q substituents R on each benzene ring of biphenyl. The number q of substituents R on the two benzene rings can be the same or different, and each R can be the same or different. The options of each R do not affect each other.

[0029] In this application, the term "substituted or unsubstituted" means that the functional group described after the term may or may not have substituents (hereinafter, for ease of description, substituents are collectively referred to as Rc). For example, "substituted or unsubstituted aryl" refers to an aryl group having a substituent Rc or an unsubstituted aryl group. The aforementioned substituents, i.e., Rc, can be, for example, deuterium, halogen groups, cyano, heteroaryl, aryl, trialkylsilyl, alkyl, haloalkyl, cycloalkyl, etc. The number of substituents can be one or more.

[0030] In this application, "multiple" means two or more, such as two, three, four, five, six, etc.

[0031] In this application, a saturated or unsaturated 5- to 13-membered ring refers to a ring containing 5 to 13 ring atoms; for example, including but not limited to cyclopentane, cyclohexane, benzene ring, fluorene ring, etc.

[0032] In this application, a ring system formed by n atoms is called an n-membered ring. For example, phenyl is a 6-membered ring. 5- to 13-membered rings refer to cyclic groups having 5 to 13 ring atoms. In one specific embodiment, 5- to 13-membered rings include, but are not limited to, cyclopentane (5-membered ring), cyclohexane (6-membered ring), benzene ring (6-membered ring), naphthalene ring (10-membered ring), and fluorene ring (13-membered ring).

[0033] The hydrogen atoms in the compound structure of this application include various isotopes of hydrogen, such as hydrogen (H), deuterium (D), or tritium (T).

[0034] In this application, the number of carbon atoms in substituted or unsubstituted functional groups refers to the total number of carbon atoms. For example, if L1 is a substituted arylene with 12 carbon atoms, then the total number of carbon atoms in the arylene and its substituents is 12.

[0035] In this application, aryl refers to any optional functional group or substituent derived from an aromatic carbon ring. The aryl group can be a monocyclic aryl (e.g., phenyl) or a polycyclic aryl; in other words, the aryl group can be a monocyclic aryl, a fused-ring aryl, two or more monocyclic aryl groups linked by carbon-carbon bonds, a monocyclic aryl and a fused-ring aryl linked by carbon-carbon bonds, or two or more fused-ring aryl groups linked by carbon-carbon bonds. That is, unless otherwise stated, two or more aromatic groups linked by carbon-carbon bonds can also be considered as the aryl group in this application. Fused-ring aryl groups may include, for example, bicyclic fused aryl (e.g., naphthyl), tricyclic fused aryl (e.g., phenanthrene, fluorenyl, anthracene), etc. The aryl group does not contain heteroatoms such as B, N, O, S, P, Se, and Si. Aryl groups with 6 to 30 carbon atoms may include, but are not limited to, phenyl, naphthyl, fluorenyl, spirodifluorenyl, anthracene, phenanthrene, biphenyl, terphenyl, and triphenylene. Peryl, benzo[9,10]phenanthryl, pyrene Benzofluoranthyl, base Benz[c]phenanthrene wait.

[0036] In this application, the term "arylene" refers to a divalent or polyvalent group formed by the further loss of one or more hydrogen atoms from an aryl group.

[0037] In this application, terphenyl includes

[0038] In this application, the number of carbon atoms in the substituted aryl group refers to the total number of carbon atoms in the aryl group and the substituents on the aryl group. For example, a substituted aryl group with 18 carbon atoms refers to a total number of 18 carbon atoms in the aryl group and the substituents.

[0039] In this application, the substituted or unsubstituted aryl (arylene) group can have 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. In some embodiments, the substituted or unsubstituted aryl group is a substituted or unsubstituted aryl group with 6 to 30 carbon atoms; in other embodiments, the substituted or unsubstituted aryl group is a substituted or unsubstituted aryl group with 6 to 25 carbon atoms; and in still other embodiments, the substituted or unsubstituted aryl group is a substituted or unsubstituted aryl group with 6 to 15 carbon atoms.

[0040] In this application, the fluorene group can be substituted by one or more substituents. When the fluorene group is substituted, the substituted fluorene group can be: etc., but not limited to this.

[0041] In this application, aryl groups used as substituents for L, L1, L2, Ar1, and Ar2 include, but are not limited to, phenyl, naphthyl, phenanthryl, biphenyl, fluorenyl, dimethylfluorenyl, etc.

[0042] In this application, a heteroaryl group refers to a monovalent aromatic ring or its derivative containing 1, 2, 3, 4, 5, or 6 heteroatoms. The heteroatoms can be one or more of B, O, N, P, Si, Se, and S. A heteroaryl group can be a monocyclic or polycyclic heteroaryl group; in other words, a heteroaryl group can be a single aromatic ring system or a system of multiple aromatic rings linked by carbon-carbon bonds, and any aromatic ring system can be a single aromatic monocyclic ring or a fused aromatic ring. Examples of heteroaryl groups with 3 to 30 carbon atoms include, but are not limited to, thiophene, furanyl, pyrrole, imidazolyl, thiazolyl, oxazolyl, oxadiazolyl, triazolyl, pyridyl, bipyridyl, pyrimidinyl, triazinyl, acridinel, pyridazinyl, quinolinyl, quinazolinyl, quinoxolinyl, phenoxazinyl, phthalazinyl, pyridopyrimidinyl, pyridopyrazinyl, pyrazinopyrazinyl, etc. Isoquinolinyl, indolyl, carbazole, benzoxazolyl, benzimidazolyl, benzothiazolyl, benzocarbazole, benzothiophene, dibenzothiophene, thiophene-thiophene, benzofuranyl, phenanthrolinel, isoxazolyl, thiadiazolyl, phenothiazinyl, silylfluorenyl, dibenzofuranyl, as well as N-phenylcarbazole, N-pyridylcarbazole, N-methylcarbazole, etc., but not limited to these.

[0043] In this application, the term "hybrid aryl" refers to a divalent or polyvalent group formed by the further loss of one or more hydrogen atoms from a heteroaryl group.

[0044] In this application, the number of carbon atoms in the substituted or unsubstituted heteroaryl group (hybrid aryl 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. In some embodiments, the substituted or unsubstituted heteroaryl group is a substituted or unsubstituted heteroaryl group with a total carbon number of 3 to 30; in other embodiments, the substituted or unsubstituted heteroaryl group is a substituted or unsubstituted heteroaryl group with a total carbon number of 3 to 18; and in still other embodiments, the substituted or unsubstituted heteroaryl group is a substituted or unsubstituted heteroaryl group with a total carbon number of 5 to 12.

[0045] In this application, the heteroaryl groups that serve as substituents for L, L1, L2, Ar1, and Ar2 include, but are not limited to, pyridyl, carbazolyl, quinolinyl, isoquinolinyl, phenantholinyl, benzoxazolyl, benzothiazolyl, benzoimidazolyl, dibenzothiophene, and dibenzofuranyl.

[0046] In this application, the substituted heteroaryl group may be one or more hydrogen atoms of the heteroaryl group that are replaced by groups such as deuterium, halogen groups, cyano, aryl, heteroaryl, trialkylsilyl, alkyl, cycloalkyl, haloalkyl, etc. It should be understood that the number of carbon atoms in the substituted heteroaryl group refers to the total number of carbon atoms of the heteroaryl group and the substituents on the heteroaryl group.

[0047] In this application, alkyl groups having 1 to 10 carbon atoms can include straight-chain alkyl groups having 1 to 10 carbon atoms and branched alkyl groups having 3 to 10 carbon atoms. The number of carbon atoms in an alkyl group can be, for example, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10. Specific examples of alkyl groups include, but are not limited to, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, neopentyl, and n-hexyl.

[0048] In this application, the halogen group may be, for example, fluorine, chlorine, bromine, or iodine.

[0049] In this application, specific examples of trialkylsilyl groups include, but are not limited to, trimethylsilyl, triethylsilyl, etc.

[0050] In this application, the number of carbon atoms in the alkyl halogroup is, for example, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10. Specific examples of alkyl halogroups in this application include, but are not limited to, trifluoromethyl.

[0051] In this application, the number of carbon atoms in the deuterated alkyl group having 1 to 10 carbon atoms is, for example, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10. Specific examples of deuterated alkyl groups include, but are not limited to, trideuterated methyl.

[0052] In this application, the number of carbon atoms in cycloalkyl groups with 3 to 10 carbon atoms can be, for example, 3, 4, 5, 6, 7, 8, or 10. Specific examples of cycloalkyl groups include, but are not limited to, cyclopentyl, cyclohexyl, and adamantyl.

[0053] In this application, the number of carbon atoms in the deuterated aryl group with 6 to 18 carbon atoms is, for example, 6, 7, 8, 9, 10, 11, 22, 13, 14, 15, 16, 17, or 18. Specific examples of deuterated aryl groups include, but are not limited to, pentadeuterated phenyl, nonadeuterated naphthyl, and undeuterated biphenyl.

[0054] In this application, the non-positioned connecting key refers to the single bond extending from the loop system. This indicates that one end of the linker can connect to any position in the ring system it traverses, and the other end connects to the rest of the compound molecule. For example, as shown in equation (f) below, the naphthyl group represented by equation (f) is connected to other positions in the molecule through two non-positional linkers that traverse the bicyclic ring. This means that any possible connection mode shown in equations (f-1) to (f-10) is included.

[0055] For another example, as shown in equation (X'), the dibenzofuran group represented by equation (X') is connected to other positions in the molecule via a non-positional linker extending from the middle of one side of the benzene ring. This means that any possible connection mode shown in equations (X'-1) to (X'-4) is included.

[0056] In this application, a non-orienting substituent refers to a substituent connected by a single bond extending from the center of the ring system, indicating that the substituent can be attached to any possible position in the ring system. For example, as shown in equation (Y) below, the substituent R' represented by equation (Y) is connected to the quinoline ring by a non-orienting linking bond, which means that it includes any possible connection mode shown in equations (Y-1) to (Y-7):

[0057] In some embodiments, the organic compounds of this application are selected from structures as shown in formula (1-1) or formula (1-2):

[0058] In some embodiments, Ar1 and Ar2 may be the same or different, and each is independently selected from substituted or unsubstituted aryl groups 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 groups 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.

[0059] In some embodiments, Ar1 and Ar2 may be the same or different, and each is independently selected from substituted or unsubstituted aryl groups having 6 to 25 carbon atoms, or substituted or unsubstituted heteroaryl groups having 3 to 24 carbon atoms.

[0060] In some embodiments, the substituents in Ar1 and Ar2 may be the same or different, and each is independently selected from deuterium, halogen groups, cyano, haloalkyl with 1 to 4 carbon atoms, deuteralkyl with 1 to 4 carbon atoms, alkyl with 1 to 4 carbon atoms, cycloalkyl with 5 to 10 carbon atoms, aryl with 6 to 15 carbon atoms, heteroaryl with 5 to 12 carbon atoms, trialkylsilyl with 3 to 8 carbon atoms, or deuteralkyl with 6 to 15 carbon atoms. Optionally, any two adjacent substituents in Ar1 and Ar2 form a benzene ring or a fluorene ring.

[0061] 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 dibenzothiophene, substituted or unsubstituted dibenzofuran, substituted or unsubstituted carbazolyl, substituted or unsubstituted benzoxazolyl, substituted or unsubstituted benzothiazolyl or substituted or unsubstituted pyridyl.

[0062] In some embodiments, the substituents in Ar1 and Ar2 may be the same or different, and each is 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.

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

[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 with 6 to 15 carbon atoms, and substituted or unsubstituted heteroaryl groups with 12 to 18 carbon atoms.

[0066] 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.

[0067] In some embodiments, the substituents in L, L1 and L2 are each independently selected from deuterium, fluorine, cyano, alkyl with 1 to 5 carbon atoms, trialkylsilyl with 3 to 8 carbon atoms, fluoroalkyl with 1 to 4 carbon atoms, deuterylalkyl with 1 to 4 carbon atoms, phenyl or naphthyl.

[0068] In some embodiments, L, L1, and L2 may be the same or different, and each is independently selected from single bonds, substituted or unsubstituted phenylene, substituted or unsubstituted naphthylene, substituted or unsubstituted biphenylene, substituted or unsubstituted dibenzothiophene, substituted or unsubstituted dibenzofuranyl, substituted or unsubstituted fluorene, substituted or unsubstituted phenanthylene, and substituted or unsubstituted carbazolyl.

[0069] In some embodiments, the substituents in L, L1, and L2 may be the same or different, and each is independently selected from deuterium, fluorine, cyano, methyl, ethyl, isopropyl, tert-butyl, trifluoromethyl, trideuterated methyl, trimethylsilyl, or phenyl.

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

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

[0072] In some embodiments, L1 and L2 may be the same or different, and each is independently selected from the group consisting of single bonds or the following groups:

[0073] In some embodiments, L1 and L2 may be the same or different, and each is independently selected from the group consisting of single bonds or the following groups:

[0074] In some implementations... They may be the same or different, and each is independently selected from the group consisting of the following groups:

[0075] In some embodiments, the group in Formula 1 Selected from the group consisting of the following groups:

[0076] In some embodiments, the organic compound is selected from the group consisting of:

[0077] A second aspect of this application provides an organic electroluminescent device, including an anode, a cathode, and a functional layer disposed between the anode and the cathode; wherein the functional layer comprises the organic compound described in the first aspect of this application.

[0078] The organic compounds provided in this application can be used to form at least one organic film layer in the functional layer to improve the luminous efficiency and lifetime of organic electroluminescent devices.

[0079] In some embodiments, the functional layer includes an organic light-emitting layer, which comprises the organic compound. The organic light-emitting layer may be composed of the organic compound provided in this application, or it may be composed of the organic compound provided in this application and other materials.

[0080] According to a specific embodiment, the organic electroluminescent device is shown in FIG1. ​​The organic electroluminescent device may include 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, which are stacked sequentially.

[0081] In this application, the anode 100 includes an anode material, which is preferably a material with a large work function that facilitates hole injection into the functional layer. Specific examples of anode materials 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.

[0082] In this application, the hole transport layer may include one or more hole transport materials. The hole transport layer material may be selected from carbazole polymers, carbazole-linked triarylamine compounds, or other types of compounds, specifically from the compounds listed below or any combination thereof:

[0083] In one embodiment, the hole transport layer 321 may be composed of HT-1.

[0084] In one embodiment, the light-emitting auxiliary layer 322 is composed of HT-2.

[0085] In some embodiments, a hole injection layer 310 is further disposed between the anode 100 and the hole transport layer 321 to enhance the ability to inject holes into the hole transport layer 321. The hole injection layer 310 may be selected from benzidine derivatives, starburst-like aryl amine compounds, phthalocyanine derivatives, or other materials; this application does not impose any special limitations on this. In one specific embodiment, the material of the hole injection layer 310 is selected from the following compounds or any combination thereof;

[0086] In one embodiment, the hole injection layer 310 is composed of PD and HT-1.

[0087] In this application, the organic light-emitting layer 330 may be composed of a single light-emitting material, or it may include a host material and a guest material (i.e., a doped material). In some embodiments, the organic light-emitting layer 330 is composed of a host material and a guest material. Holes and electrons injected into the organic light-emitting layer 330 can recombine in the organic light-emitting layer 330 to form excitons. The excitons transfer energy to the host material, and the host material transfers energy to the guest material, thereby enabling the guest material to emit light.

[0088] The host material of the organic light-emitting layer 330 may comprise metal chelating compounds, bis(styrene) derivatives, aromatic amine derivatives, dibenzofuran derivatives, or other types of materials. In some embodiments, the host material comprises the organic compounds of this application.

[0089] The guest material of the organic light-emitting layer 330 can be a compound with a condensed aryl ring or its derivative, a compound with a heteroaryl ring or its derivative, an aromatic amine derivative, or other materials; this application does not impose any special limitations on this. The guest material is also called a dopant or dopant. According to the type of light emission, it can be divided into fluorescent dopant and phosphorescent dopant. Specific examples of phosphorescent dopant include, but are not limited to,

[0090] In one embodiment of this application, the organic electroluminescent device is a red organic electroluminescent device. In one embodiment, the host material of the organic light-emitting layer 330 comprises the organic compound of this application. The guest material is, for example, RD-1.

[0091] In one embodiment, the host material of the organic light-emitting layer 330 comprises the organic compounds of this application and (RH-P)

[0092] In one embodiment of this 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 this application.

[0093] The electron transport layer 340 can be a single-layer structure or a multi-layer structure, and may include one or more electron transport materials. The electron transport materials may be selected from, but are not limited to, BTB, LiQ, benzimidazole derivatives, oxadiazole derivatives, quinoxaline derivatives, or other electron transport materials. This application does not impose any specific limitations on these materials. The material of the electron transport layer 340 includes, but is not limited to, the following compounds:

[0094] In one embodiment of this application, the electron transport layer 340 may be composed of ET-1 and LiQ.

[0095] In this application, the cathode 200 may include a cathode material that has a small work function and facilitates electron injection into the functional layer. Specific examples of cathode materials 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 multilayer 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.

[0096] In some embodiments, an electron injection layer 350 is further disposed 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 may include inorganic materials such as alkali metal sulfides and alkali metal halides, or may include complexes of alkali metals and organic materials. In one embodiment of this application, the electron injection layer 350 may include ytterbium (Yb).

[0097] A third aspect of this application provides an electronic device including the organic electroluminescent device described in the second aspect of this application.

[0098] According to one embodiment, as shown in FIG2, the provided electronic device is electronic device 400, which includes the aforementioned organic electroluminescent device. Electronic device 400 may be, for example, a display device, a lighting device, an optical communication device, or other types of electronic devices, such as including but not limited to computer screens, mobile phone screens, televisions, electronic paper, emergency lighting, optical modules, etc.

[0099] The following examples illustrate the synthesis method of the organic compounds of this application, but this disclosure is not limited thereto.

[0100] Synthesis Examples

[0101] Those skilled in the art will recognize that the chemical reactions described herein can be suitably used to prepare many of the organic compounds of this application, and other methods for preparing the compounds of this application are considered to be within the scope of this application. For example, the synthesis of those non-illustrative compounds according to this application can be successfully accomplished by those skilled in the art through modification methods, such as appropriately protecting interfering groups, utilizing other known reagents besides those described herein, or making some conventional modifications to the reaction conditions. The compounds synthesized by methods not mentioned in this application are all commercially available starting materials.

[0102] Synthesis of Sub-a1:

[0103] Under a nitrogen atmosphere, 1-chloro-2-bromo-dibenzofuran (14.10 g, 50 mmol), 2-formylphenylboronic acid (8.24 g, 55 mmol), tetra(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 (140 mL), anhydrous ethanol (35 mL), and deionized water (35 mL) were added sequentially to a 500 mL three-necked flask. Stirring and heating were started, and the mixture was refluxed for 8 h. After the system cooled to room temperature, it was extracted with dichloromethane (100 mL × 3 times). The organic phases were combined and dried over anhydrous magnesium sulfate. After filtration, the solvent was removed by vacuum distillation 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 a white solid Sub-a1 (9.81 g, yield 64%).

[0104] Synthesis of Sub-a2:

[0105] Under a nitrogen atmosphere, 2-bromo-4-chloro-dibenzofuran (14.10 g, 50 mmol), 2-formylphenylboronic acid (8.24 g, 55 mmol), tetra(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 (140 mL), anhydrous ethanol (35 mL), and deionized water (35 mL) were added sequentially to a 500 mL three-necked flask. Stirring and heating were started, and the mixture was refluxed for 8 h. After the system cooled to room temperature, it was extracted with dichloromethane (100 mL × 3 times). The organic phases were combined and dried over anhydrous magnesium sulfate. After filtration, the solvent was removed by vacuum distillation 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 a white solid Sub-a2 (11.35 g, yield 74%).

[0106] Synthesis of Sub-b1:

[0107] Under a nitrogen atmosphere, (methoxymethyl)triphenylphosphonium chloride (51.25 g, 149.5 mmol), potassium tert-butoxide (18.10 g, 161 mmol), and anhydrous tetrahydrofuran (200 mL) were added to a 1000 mL three-necked flask. The system was cooled to -15 °C and maintained for 30 min. Then, Sub-a1 (39.90 g, 130 mmol) was weighed and dissolved in anhydrous tetrahydrofuran (200 mL). This solution was slowly added dropwise to the reaction system using a constant pressure dropping funnel, maintaining the temperature at -15 °C during the addition. After the addition was completed, the reaction was stirred at -15 °C for 1 h. The reaction system was then allowed to warm naturally to room temperature, extracted with dichloromethane (200 mL × 3 times), the organic phases were combined and dried over anhydrous magnesium sulfate, filtered, and the solvent was removed by vacuum distillation to obtain the crude product. The crude product was purified by silica gel column chromatography using n-heptane / dichloromethane as the mobile phase to obtain a grayish-white solid Sub-b1 (30.0 g, yield 69%).

[0108] Synthesis of Sub-b2:

[0109] Under a nitrogen atmosphere, (methoxymethyl)triphenylphosphonium chloride (51.25 g, 149.5 mmol), potassium tert-butoxide (18.10 g, 161 mmol), and anhydrous tetrahydrofuran (200 mL) were added to a 1000 mL three-necked flask. The system was cooled to -15 °C and maintained for 30 min. Then, Sub-a2 (39.90 g, 130 mmol) was weighed and dissolved in anhydrous tetrahydrofuran (200 mL). This solution was slowly added dropwise to the reaction system using a constant pressure dropping funnel, maintaining the temperature at -15 °C during the addition. After the addition was completed, the reaction was stirred at -15 °C for 1 h. The reaction system was then allowed to warm naturally to room temperature, extracted with dichloromethane (200 mL × 3 times), the organic phases were combined and dried over anhydrous magnesium sulfate, filtered, and the solvent was removed by vacuum distillation to obtain the crude product. The crude product was purified by silica gel column chromatography using n-heptane / dichloromethane as the mobile phase to obtain a grayish-white solid Sub-b2 (31.77 g, yield 73%).

[0110] Synthesis of Sub-c1:

[0111] Under a nitrogen atmosphere, Sub-b1 (39.84 g, 119 mmol), Eaton reagent (4.5 mL), and chlorobenzene (400 mL) were added sequentially to a 1000 mL three-necked flask. The mixture was heated to reflux and stirred for 4 h. After the reaction system cooled to room temperature, the reaction solution was poured into 1000 mL of deionized water, neutralized with saturated sodium hydroxide solution, and then extracted with dichloromethane (250 mL × 3 times). The organic phases were combined and dried over anhydrous magnesium sulfate. After filtration, the solvent was removed by vacuum distillation 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 a white solid Sub-c1 (26.66 g, yield 74%).

[0112] Synthesis of Sub-c2:

[0113] Under a nitrogen atmosphere, Sub-c1 (7.56 g, 25 mmol) and 200 mL of benzene-D6 were added to a 100 mL three-necked flask. The mixture was heated to 60 °C, and then trifluoromethanesulfonic acid (22.51 g, 150 mmol) was added. The mixture was then heated to boiling and stirred for 24 hours. After the reaction system cooled to room temperature, 50 mL of heavy water was added, and the mixture was stirred for 10 minutes. A saturated aqueous solution of K3PO4 was then added to neutralize the reaction mixture. The organic layer was extracted with dichloromethane (50 mL × 3 times), and the combined organic phases were dried over anhydrous sodium sulfate. After filtration, the solvent was removed by vacuum distillation to obtain the crude product. The crude product was purified by silica gel column chromatography using n-heptane / dichloromethane as the mobile phase to obtain a white solid, Sub-c2 (4.23 g, yield 54%).

[0114] Synthesis of Sub-c3:

[0115] Under a nitrogen atmosphere, Sub-b2 (39.84 g, 119 mmol), Eaton reagent (4.5 mL), and chlorobenzene (400 mL) were added sequentially to a 1000 mL three-necked flask. The mixture was heated to reflux and stirred for 4 h. After the reaction system cooled to room temperature, the reaction solution was poured into 1000 mL of deionized water, neutralized with saturated sodium hydroxide solution, and then extracted with dichloromethane (250 mL × 3 times). The organic phases were combined and dried over anhydrous magnesium sulfate. After filtration, the solvent was removed by vacuum distillation to obtain the crude product. The crude product was purified by silica gel column chromatography using dichloromethane / n-heptane as the mobile phase, and the white solid Sub-c3 (15.85 g, yield 44%) and the byproduct Sub-c4 were separated.

[0116] Synthesis of Sub-d1:

[0117] Under a nitrogen atmosphere, Sub-c1 (15.10 g, 50 mmol), pinacol diborate (14.0 g, 55 mmol), potassium acetate (10.8 g, 110 mmol), and 1,4-dioxane (150 mL) were added sequentially to a 500 mL three-necked flask. The mixture was stirred and heated until it reached 40 °C. Then, tris(dibenzylacetone)dipalladium (Pd2(dba)3, 0.46 g, 0.50 mmol) and 2-dicyclohexylphosphine-2',4',6'triisopropylbiphenyl (XPhos, 0.48 g, 1.0 mmol) were quickly added. The mixture was then heated to reflux and stirred overnight. After the system cooled to room temperature, 200 mL of water was added to the system, and the mixture was stirred thoroughly for 30 min. The mixture was then filtered under reduced pressure. The filter cake was washed with deionized water until neutral, and then rinsed with 100 mL of anhydrous ethanol to obtain a gray solid. The crude product was slurried once with n-heptane, then dissolved in 200 mL of toluene and passed through a silica gel column to remove the catalyst. After concentration, a white solid Sub-d1 (12.80 g, yield 65%) was obtained.

[0118] Following the synthesis process of Sub-d1, reactant A shown in Table 1 was used to replace Sub-c1 to synthesize intermediates Sub-d2 and Sub-d3.

[0119] Table 1: Synthesis of Sub-d2 and Sub-d3

[0120] Synthesis of Sub-e1:

[0121] Under a nitrogen atmosphere, 2-chloro-4-(2-naphthyl)-6-phenyl-1,3,5-triazine (15.88 g, 50 mmol), 3-chlorophenylboronic acid (8.60 g, 55 mmol), tetra(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 sequentially to a 500 mL three-necked flask. Stirring and heating were initiated, and the mixture was refluxed for 8 h. After cooling to room temperature, the mixture was extracted with dichloromethane (100 mL × 3 times). The organic phases were combined and dried over anhydrous magnesium sulfate. After filtration, the solvent was removed by vacuum distillation 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 a white solid, Sub-e1 (15.36 g, 78% yield).

[0122] Referring to the synthesis process of Sub-e1, reactant B shown in Table 2 was used to replace 2-chloro-4-(2-naphthyl)-6-phenyl-1,3,5-triazine, and reactant C was used to replace 3-chlorophenylboronic acid to synthesize Sub-e2 to Sub-e16.

[0123] Table 2: Synthesis of Sub-e2 to Sub-e16

[0124] Synthesis of compound 4:

[0125] Under a nitrogen atmosphere, Sub-d1 (10.35 g, 26.25 mmol), 2-chloro-4-(biphenyl-4-yl)-6-phenyl-1,3,5-triazine (8.60 g, 25 mmol), palladium acetate (42 mg, 0.25 mmol), 2-dicyclohexylphosphine-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 sequentially to a 250 mL three-necked flask. The mixture was stirred and heated to reflux for 16 h. After the system cooled to room temperature, it was extracted with dichloromethane (100 mL × 3 times). The organic phases were combined and dried over anhydrous magnesium sulfate. After filtration, the solvent was removed by vacuum distillation 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 a yellow-green solid compound 4 (7.48 g, yield 52%, m / z = 576.20 [M+H)). + ).

[0126] Referring to the synthesis process of compound 4, reactant D shown in Table 3 was used to replace Sub-d1, and reactant E was used to replace 2-chloro-4-(biphenyl-4-yl)-6-phenyl-1,3,5-triazine to synthesize the compounds of this application listed in Table 3.

[0127] Table 3: Synthesis of the compounds in this application

[0128] NMR of Compound 25: 1 H-NMR (400MHz, CD2Cl2) δ (ppm): 8.88 (s, 1H), 8.85 (d, 2H), 8.78 (s, 1H), 8.72 (d, 1H), 8.50 (d, 1H), 8. 32-8.24(m,2H),8.18-8.11(m,2H),8.04(d,1H),8.01(s,1H),7.72-7.54(m,12H),7.52-7.36(m,3H).

[0129] Fabrication and evaluation of organic electroluminescent devices:

[0130] Example 1: Fabrication of a red organic electroluminescent device

[0131] First, anodizing pretreatment is performed through the following process: [The process is repeated in the original text, so the translation is incomplete.] On the ITO / Ag / ITO substrate, surface treatment is performed using ultraviolet ozone and O2:N2 plasma to increase the work function of the anode. Alternatively, organic solvents can be used to clean the surface of the ITO substrate to remove impurities and oil stains.

[0132] On the experimental substrate (anode), PD:HT-1 was co-deposited at a deposition rate of 2%:98% to form a thickness of [missing information]. A hole injection layer (HIL) is formed, and then HT-1 is vacuum-deposited on the hole injection layer to form a thickness of [missing information]. A hole transport layer. Compound HT-2 is vacuum-deposited onto the hole transport layer to form a layer with a thickness of [missing information]. The light-emitting auxiliary layer.

[0133] Next, compound 4:RH-P:RD-1 was co-deposited on the light-emitting auxiliary layer in a ratio of 49%:49%:2% to form a layer with a thickness of [missing information]. Red organic electroluminescent layer (EML).

[0134] On an organic electroluminescent layer, compounds ET-1 and LiQ were co-deposited at a 1:1 evaporation rate to form a thickness of [missing information]. The electron transport layer (ETL) is formed by depositing Yb onto the electron transport layer to create a thickness of [thickness value missing]. An electron-injected layer (EIL) was formed, and then magnesium (Mg) and silver (Ag) were mixed at a evaporation rate of 1:9 and vacuum-deposited onto the electron-injected layer to form a layer with a thickness of [missing information]. The cathode.

[0135] Furthermore, the vacuum evaporation thickness on the aforementioned cathode is [missing information]. The CP forms a capping layer, thereby completing the fabrication of the red organic electroluminescent device.

[0136] Examples 2-67

[0137] Except that, when fabricating the light-emitting layer, compound X in Table 4 is used instead of compound 4 in Example 1, the organic electroluminescent device is prepared using the same method as in Example 1.

[0138] Comparative Examples 1-4

[0139] Except that, when fabricating the light-emitting layer, compounds A, B, C, and D were used instead of compound 4 in Example 1, the organic electroluminescent device was prepared using the same method as in Example 1.

[0140] The structures of the main materials used in each embodiment and comparative example are as follows.

[0141] The performance of the red organic electroluminescent devices prepared in Examples 1-67 and Comparative Examples 1-4 was tested, specifically at 10 mA / cm². 2 The IVL performance of the device was tested under the specified conditions. The lifetime of the T95 device was 20 mA / cm. 2 The test was conducted under the specified conditions, and the test results are shown in Table 4.

[0142] Table 4

[0143] Referring to Table 4 above, compared to Comparative Examples 1-4 which used compounds A to D, the luminous efficiency of the devices in Examples 1-67, which used the compounds provided in this application as the main material of the luminescent layer of the red organic electroluminescent device, was improved by at least 12.3%. 95 Life expectancy increased by at least 16.16%.

Claims

1. An organic compound characterized in that, The organic compound has a structure represented by Formula 1: In Formula 1, one of Ra and Rb is selected from the structure shown in Formula 2, and the other is selected from hydrogen or deuterium; R1to R4are the same or different and each is independently selected from hydrogen or deuterium; 10 the same or different and each is independently selected from hydrogen or deuterium; 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 30 carbon atoms, and substituted or unsubstituted heteroaryl groups with 3 to 30 carbon atoms. 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. 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, deuterated aryl 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.

2. The organic compound according to claim 1, wherein 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 dibenzothiophene, substituted or unsubstituted dibenzofuranyl, substituted or unsubstituted carbazoyl, substituted or unsubstituted benzoxazolyl, substituted or unsubstituted benzothiazoyl or substituted or unsubstituted pyridyl; Optionally, the substituents in Ar1 and Ar2 may be the same or different, and each may be 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 may form a benzene ring or a fluorene ring.

3. The organic compound according to claim 1 or 2, wherein L, L1, and L2 may be the same or different, and each is independently selected from single bonds, substituted or unsubstituted phenylene, substituted or unsubstituted naphthylene, substituted or unsubstituted biphenylene, substituted or unsubstituted dibenzothiophene, substituted or unsubstituted dibenzofuranyl, substituted or unsubstituted fluorene, substituted or unsubstituted phenanthylene, substituted or unsubstituted carbazolyl; Optionally, the substituents in L, L1 and L2 may be the same or different, and each may be independently selected from deuterium, fluorine, cyano, methyl, ethyl, isopropyl, tert-butyl, trifluoromethyl, trideuterated methyl, trimethylsilyl or phenyl.

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 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 the same 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 2 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 formulae (1-1) and (1-2): ###00003### ###00004### (1-1) (1-2) 11. The organic compound according to any one of claims 1 to 10, which is selected from the group consisting of the following compounds:

12. 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 11; Optionally, the functional layer includes a light-emitting layer containing the organic compound.

13. An electronic device, characterized by Including the organic electroluminescent device as described in claim 12.

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