Organic electroluminescent material and device thereof

Abstract

Disclosed are an organic electroluminescent material and a device thereof. The organic electroluminescent material is a polycyclic compound with a structure of formula 1, which can be used as a TADF material in an organic electroluminescent device. The polycyclic compound has a regulating effect on the light-emitting color, can realize desired light emission, and has deep HOMO and LUMO energy levels, while having excellent device performance of low voltage, high efficiency and long service life, and has a very broad industrial application prospect. Also disclosed are an organic electroluminescent device comprising the compound and a compound composition comprising the compound.

Description

Technical Field

[0001] This invention relates to compounds for use in organic electronic devices, such as organic light-emitting devices. More particularly, it relates to a polycyclic compound, and organic electroluminescent devices and compound compositions comprising the polycyclic compound. Background Technology

[0002] Organic electronic devices include, but are not limited to, the following: organic light-emitting diodes (OLEDs), organic field-effect transistors (O-FETs), organic light-emitting transistors (OLETs), organic photovoltaic devices (OPVs), dye-sensitized solar cells (DSSCs), organic optical detectors, organic photosensors, organic field-effect devices (OFQDs), light-emitting electrochemical cells (LECs), organic laser diodes, and organic electroluminescent devices.

[0003] In 1987, Tang and Van Slyke of Eastman Kodak reported a bilayer organic electroluminescent device comprising an arylamine hole transport layer and a tri-8-hydroxyquinoline-aluminum layer as both an electron transport and luminescent layer (Applied Physics Letters, 1987, 51(12): 913-915). Once a bias voltage was applied to the device, green light was emitted. This invention laid the foundation for the development of modern organic light-emitting diodes (OLEDs). State-of-the-art OLEDs can include multiple layers, such as charge injection and transport layers, charge and exciton blocking layers, and one or more luminescent layers between the cathode and anode. Because OLEDs are self-emissive solid-state devices, they offer enormous potential for display and lighting applications. Furthermore, the inherent properties of organic materials, such as their flexibility, make them well-suited for specialized applications, such as in the fabrication of flexible substrates.

[0004] OLEDs can be classified into three different types based on their light-emitting mechanism. The OLED invented by Tang and van Slyke is a fluorescent OLED. It uses only singlet state emission. The triplet state generated in the device is wasted through non-radiative decay channels. Therefore, the internal quantum efficiency (IQE) of fluorescent OLEDs is only 25%. This limitation hindered the commercialization of OLEDs. In 1997, Forrest and Thompson reported phosphorescent OLEDs, which use triplet emission from complexed heavy metals as the emitter. Therefore, both singlet and triplet states can be harvested, achieving 100% IQE. Due to its high efficiency, the discovery and development of phosphorescent OLEDs directly contributed to the commercialization of active-matrix OLEDs (AMOLEDs). Recently, Adachi achieved high efficiency through thermally activated delayed fluorescence (TADF) of organic compounds. These emitters have small singlet-triple state gaps, making it possible for excitons to return from the triplet state to the singlet state. In TADF devices, triplet excitons can generate singlet excitons through reverse intersystem crossing, resulting in high IQE.

[0005] OLEDs can also be classified into small-molecule OLEDs and polymer OLEDs based on the form of the materials used. Small molecules refer to any organic or organometallic material that is not a polymer. Small molecules can have large molecular weights, provided they have a precise structure. Dendritic polymers with well-defined structures are considered small molecules. Polymer OLEDs include conjugated polymers and non-conjugated polymers with side-chain luminescent groups. Small-molecule OLEDs can become polymer OLEDs if post-polymerization occurs during manufacturing.

[0006] Various OLED manufacturing methods exist. Small molecule OLEDs are typically manufactured via vacuum thermal evaporation. Polymer OLEDs are manufactured using solution methods, such as spin coating, inkjet printing, and nozzle printing. Small molecule OLEDs can also be manufactured using solution methods if the material can be dissolved or dispersed in a solvent.

[0007] The emission color of OLEDs can be achieved through the design of the luminescent material structure. OLEDs can include one or more luminescent layers to achieve the desired spectrum. Green, yellow, and red OLEDs using phosphorescent materials have been successfully commercialized. Blue phosphorescent devices still suffer from issues such as blue unsaturation, short device lifetime, and high operating voltage. Commercial full-color OLED displays typically employ a hybrid strategy, using blue fluorescence and phosphorescent yellow, or red and green. Currently, the rapid decrease in efficiency of phosphorescent OLEDs at high brightness remains a problem. Furthermore, a more saturated emission spectrum, higher efficiency, and longer device lifetime are desired.

[0008] CN113227107A discloses a general formula as follows: Polycyclic aromatic compounds, of which Y1 Each is independently B, P, P=O, P=S, Al, Ga, As, Si-R or Ge-R, X 1 Each is independently N or CR, X 2 Each is independently O, NR, C(-R)2, S, or Se, and specific compounds are disclosed. , The application does not disclose or teach compounds in which two rings A are linked by specific atoms to form a ring, or compounds in which ring A is a specific fused ring, or their effect on the modulation of the maximum emission wavelength and their impact on device performance.

[0009] CN114249757A discloses a general formula as follows: Boron-containing organic compounds, wherein when X0 represents a C atom, X represents C(R); when X0 represents a N atom, X represents C(R1)2, Si(R2)2, or N(R3); and specific compounds are disclosed. , However, the application did not disclose or teach compounds in which X is another atom when X0 represents N atoms, nor did it explain the modulating effect on the maximum emission wavelength and the impact on device performance.

[0010] Existing technologies disclose some polycyclic compounds with boron, nitrogen, and other atoms as central atoms. However, when used as luminescent materials, the performance of related devices is still insufficient, especially in terms of emission wavelength, full width at half maximum (FWHM), voltage, efficiency, and lifetime, which still have room for improvement and require further research. Summary of the Invention

[0011] This invention aims to provide a novel compound to solve at least some of the aforementioned problems. The compound has a specific structure represented by Formula 1 and can be used as a TADF material in organic electroluminescent devices. The compound has a modulating effect on the emission color, enabling the achievement of desired emission, and possesses deep HOMO and LUMO energy levels, showing potential as an excellent luminescent material with broad industrial application prospects.

[0012] According to one embodiment of the present invention, a compound having the structure of Formula 1 is disclosed:

[0013]

[0014] Among them, Cy1, Cy3, Cy4, Cy5 and Cy7 are selected from unsaturated carbon rings with 5-30 carbon atoms or unsaturated heterocycles with 3-30 carbon atoms each time they appear.

[0015] Cy2 and Cy6 are selected, either identically or differently, from aromatic rings having 6-18 carbon atoms or heteroaromatic rings having 3-18 carbon atoms each time they appear;

[0016] Z1, Z2, and Z4 are selected from B, N, P, P=O, P=S, As, As=O, As=S, SiR, or GeR each time they appear;

[0017] Z3 is selected from B, P, P=O, P=S, As, As=O, As=S, SiR, or GeR each time it appears;

[0018] L1, L2, L3, L4, L5, and L6 are selected from single bonds, O, S, Se, BR', NR', PR', P=OR', P=SR', AsR', As=OR', As=SR', CR'R', SiR'R', or GeR'R' each time they appear; when two R's exist simultaneously, the two R's are the same or different.

[0019] a, b, c, d, e, and f are each independently selected from 0 or 1;

[0020] g is selected from 0 or 1, and satisfies the following conditions:

[0021] When g is 1, Y is selected from O, S, Se, and CR. g GeR g R g Or C=CR g R g When two R exist simultaneously g At that time, two R g Same or different;

[0022] When g is 0, at least one of the ring Cy1 and the ring Cy7 is selected from a fused aromatic ring having 9-30 carbon atoms or a fused heteroaromatic ring having 8-30 carbon atoms.

[0023] R1, R2, R3, R4, R5, R6, and R7, when they appear in the same or different ways, represent monosubstituted, polysubstituted, or unsubstituted substances.

[0024] R, R', R gR1, R2, R3, R4, R5, R6, and R7, each time appearing, are selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 ring carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 ring atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, and substituted... Or unsubstituted alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, -BR''R'', and combinations thereof;

[0025] The R'', each time appearing, is selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic carbon atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, substituted or unsubstituted... Alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, and combinations thereof having 0-20 carbon atoms;

[0026] Adjacent substituents R', R g R'', R1, R2, R3, R4, R5, R6 and R7 can be optionally connected to form a ring.

[0027] According to one embodiment of the present invention, an organic electroluminescent device is disclosed, comprising an anode, a cathode, and an organic layer disposed between the anode and the cathode, the organic layer comprising the compound described in any of the foregoing embodiments.

[0028] According to another embodiment of the present invention, a compound composition comprising the compounds described in any of the foregoing embodiments is also disclosed.

[0029] This invention discloses a series of compounds having specific structures represented by Formula 1. These compounds can regulate the emission color, achieving the desired emission, and possess deep HOMO and LUMO energy levels, demonstrating potential as excellent TADF materials with broad industrial application prospects. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of an organic light-emitting device that may contain the compounds and compound compositions disclosed herein.

[0031] Figure 2 This is a schematic diagram of another organic light-emitting device that may contain the compounds and compound compositions disclosed herein. Detailed Implementation

[0032] OLEDs can be manufactured on various substrates, such as glass, plastic, and metal. Figure 1 An organic light-emitting device 100 is illustrated schematically and non-limitingly. The figures are not necessarily drawn to scale, and some layer structures may be omitted as needed. Device 100 may include a substrate 101, an anode 110, a hole injection layer 120, a hole transport layer 130, an electron blocking layer 140, a light-emitting layer 150, a hole blocking layer 160, an electron transport layer 170, an electron injection layer 180, and a cathode 190. Device 100 can be fabricated by sequentially depositing the described layers. The properties and functions of each layer, as well as exemplary materials, are described in more detail in columns 6-10 of U.S. Patent 7,279,704B2, the entire contents of which are incorporated herein by reference.

[0033] Each of these layers has numerous examples. For instance, a flexible and transparent substrate-anode combination is disclosed in U.S. Patent No. 5,844,363, which is incorporated herein by reference in its entirety. An example of a p-doped hole transport layer is m-MTDATA doped with F4-TCNQ at a molar ratio of 50:1, as disclosed in U.S. Patent Application Publication No. 2003 / 0230980, which is incorporated herein by reference in its entirety. An example of a host material is disclosed in U.S. Patent No. 6,303,238 to Thompson et al., which is incorporated herein by reference in its entirety. An example of an n-doped electron transport layer is BPhen doped with Li at a molar ratio of 1:1, as disclosed in U.S. Patent Application Publication No. 2003 / 0230980, which is incorporated herein by reference in its entirety. Examples of cathodes are disclosed in U.S. Patent Nos. 5,703,436 and 5,707,745, which are incorporated herein by reference in their entirety. These cathodes comprise composite cathodes having a thin metal layer, such as Mg:Ag, overlaid with a transparent, conductive, sputter-deposited ITO layer. The principles and use of barrier layers are described in more detail in U.S. Patent No. 6,097,147 and U.S. Patent Application Publication No. 2003 / 0230980, which are also incorporated herein by reference in their entirety. Examples of implantation layers are provided in U.S. Patent Application Publication No. 2004 / 0174116, which is also incorporated herein by reference in its entirety. A description of protective layers can be found in U.S. Patent Application Publication No. 2004 / 0174116, which is also incorporated herein by reference in its entirety.

[0034] The layered structure described above is provided through non-limiting embodiments. The functionality of an OLED can be achieved by combining the various layers described above, or some layers can be omitted entirely. It may also include other layers not explicitly described. Within each layer, a single material or a mixture of multiple materials can be used to achieve optimal performance. Any functional layer may include several sublayers. For example, a light-emitting layer may have two different light-emitting materials to achieve a desired emission spectrum.

[0035] In one embodiment, an OLED can be described as having an "organic layer" disposed between a cathode and an anode. This organic layer may include one or more layers.

[0036] OLEDs also require an encapsulation layer, such as Figure 2 An organic light-emitting device 200 is shown schematically and non-limitingly, which is related to... Figure 1The difference lies in the fact that an encapsulation layer 102 may also be included above the cathode 190 to protect against harmful substances from the environment, such as moisture and oxygen. Any material capable of providing encapsulation can be used as the encapsulation layer, such as glass or an organic-inorganic hybrid layer. The encapsulation layer should be placed directly or indirectly on the outside of the OLED device. Multilayer thin-film encapsulation is described in U.S. Patent 7,968,146B2, the entire contents of which are incorporated herein by reference.

[0037] Devices manufactured according to embodiments of the present invention can be incorporated into a variety of consumer products having one or more electronic component modules (or units). Some examples of such consumer products include flat panel displays, monitors, medical monitors, televisions, billboards, lights for indoor or outdoor lighting and / or signaling, head-up displays, fully or partially transparent displays, flexible displays, smartphones, tablet computers, phablets, wearable devices, smartwatches, laptop computers, digital cameras, portable camcorders, viewfinders, microdisplays, 3D displays, vehicle displays, and taillights.

[0038] The materials and structures described in this article can also be used in other organic electronic devices listed above.

[0039] As used herein, "top" means furthest from the substrate, and "bottom" means closest to the substrate. When the first layer is described as being "disposed" on the second layer, the first layer is positioned further from the substrate. Unless it is specified that the first layer "contacts" the second layer, other layers may exist between the first and second layers. For example, even if various organic layers exist between the cathode and anode, the cathode may still be described as being "disposed" on the anode.

[0040] As used herein, “solution-handleable” means capable of being dissolved, dispersed or transported in and / or deposited from a liquid medium in the form of a solution or suspension.

[0041] When a ligand is believed to directly contribute to the photosensitivity of the emitting material, the ligand can be called "photosensitive." When a ligand is believed not to contribute to the photosensitivity of the emitting material, the ligand can be called "auxiliary," but auxiliary ligands can alter the properties of photosensitivity ligands.

[0042] It is believed that the internal quantum efficiency (IQE) of fluorescent OLEDs can exceed the 25% spin statistical limit through delayed fluorescence. Delayed fluorescence can generally be divided into two types: P-type delayed fluorescence and E-type delayed fluorescence. P-type delayed fluorescence is generated by triplet-triplet annihilation (TTA).

[0043] On the other hand, E-type delayed fluorescence does not depend on the collision of two triplet states, but rather on the transition between triplet and singlet excited states. Compounds capable of producing E-type delayed fluorescence need to have a very small singlet-triple gap to facilitate the transition between energy states. Thermal energy can activate the transition from triplet to singlet. This type of delayed fluorescence is also called thermally activated delayed fluorescence (TADF). A significant characteristic of TADF is that the delayed component increases with increasing temperature. If the reverse system crossover (RISC) rate is fast enough to minimize the nonradiative decay from the triplet state, the fraction of singlet excited states that are refilled can reach 75%. The total singlet fraction can be 100%, far exceeding the 25% spin statistics of electrogenerated excitons.

[0044] E-type delayed fluorescence can be observed in excited complex systems or single compounds. Unbound by theory, it is believed that E-type delayed fluorescence requires the luminescent material to have a small singlet-triple bandgap (ΔE). S-T Organic, nonmetallic donor-acceptor luminescent materials may be able to achieve this. The emission of these materials is typically characterized as donor-acceptor charge transfer (CT) emission. Spatial separation of the HOMO and LUMO in these donor-acceptor compounds usually produces small ΔE. S-T These states can include CT states. Typically, donor-acceptor luminescent materials are constructed by linking an electron donor moiety (e.g., an amino or carbazole derivative) with an electron acceptor moiety (e.g., an N-containing six-membered aromatic ring).

[0045] Definition of the term "substituent group"

[0046] Halogens or halides – as used herein, include fluorine, chlorine, bromine, and iodine.

[0047] Alkyl – As used herein, includes straight-chain and branched alkyl groups. An alkyl group can be an alkyl group having 1 to 20 carbon atoms, preferably an alkyl group having 1 to 12 carbon atoms, and more preferably an alkyl group having 1 to 6 carbon atoms. Examples of alkyl groups include methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, n-pentyl, n-hexyl, n-heptyl, n-octyl, n-nonyl, n-decyl, n-undecyl, n-dodecyl, n-tridecyl, n-tetradecyl, n-pentadecanyl, n-hexadecyl, n-heptadecyl, n-octadecyl, neopentyl, 1-methylpentyl, 2-methylpentyl, 1-pentylhexyl, 1-butylpentyl, 1-heptyloctyl, and 3-methylpentyl. Among the above, methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, n-pentyl, neopentyl, and n-hexyl are preferred. Additionally, the alkyl group may optionally be substituted.

[0048] Cycloalkyl – As used herein, it comprises cyclic alkyl groups. The cycloalkyl group can be a cycloalkyl group having 3 to 20 carbon atoms, preferably a cycloalkyl group having 4 to 10 carbon atoms. Examples of cycloalkyl groups include cyclobutyl, cyclopentyl, cyclohexyl, 4-methylcyclohexyl, 4,4-dimethylcyclohexyl, 1-adamantyl, 2-adamantyl, 1-norbornyl, 2-norbornyl, etc. Among the above, cyclopentyl, cyclohexyl, 4-methylcyclohexyl, and 4,4-dimethylcyclohexyl are preferred. Furthermore, the cycloalkyl group may optionally be substituted.

[0049] Heteroalkyl – as used herein, a heteroalkyl group comprises one or more carbon atoms in an alkyl chain that are replaced by heteroatoms selected from the group consisting of nitrogen, oxygen, sulfur, selenium, phosphorus, silicon, germanium, and boron atoms. The heteroalkyl group can be a heteroalkyl group having 1 to 20 carbon atoms, preferably a heteroalkyl group having 1 to 10 carbon atoms, and more preferably a heteroalkyl group having 1 to 6 carbon atoms. Examples of heteroalkyl groups include methoxymethyl, ethoxymethyl, ethoxyethyl, methylthiomethyl, ethylthiomethyl, ethylthioethyl, methoxymethoxymethyl, ethoxymethoxymethyl, ethoxyethoxyethyl, hydroxymethyl, hydroxyethyl, hydroxypropyl, mercaptomethyl, mercaptoethyl, mercaptopropyl, aminomethyl, aminoethyl, aminopropyl, dimethylaminomethyl, trimethylgermanylmethyl, trimethylgermanylethyl, trimethylgermanylisopropyl, dimethylethylgermanylmethyl, dimethylisopropylgermanylmethyl, tert-butyldimethylgermanylmethyl, triethylgermanylmethyl, triethylgermanylethyl, triisopropylgermanylmethyl, triisopropylgermanylethyl, trimethylsilylmethyl, trimethylsilylethyl, trimethylsilylisopropyl, triisopropylsilylmethyl, triisopropylsilylethyl. Additionally, heteroalkyl groups may optionally be substituted.

[0050] Alkenyl – as used herein, encompasses straight-chain, branched, and cyclic olefinic groups. An alkenyl group can be an alkenyl group containing 2 to 20 carbon atoms, preferably an alkenyl group having 2 to 10 carbon atoms. Examples of alkenyl groups include vinyl, propenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1,3-butadienyl, 1-methylvinyl, styryl, 2,2-diphenylvinyl, 1,2-diphenylvinyl, 1-methylallyl, 1,1-dimethylallyl, 2-methylallyl, 1-phenylallyl, 2-phenylallyl, 3-phenylallyl, 3,3-diphenylallyl, 1,2-dimethylallyl, 1-phenyl-1-butenyl, 3-phenyl-1-butenyl, cyclopentenyl, cyclopentadienyl, cyclohexenyl, cycloheptenyl, cyclohepttrienyl, cyclooctenyl, cyclooctatetraenyl, and norbornyl. In addition, the alkenyl group can be optionally substituted.

[0051] Alkynyl – As used herein, this term encompasses straight-chain alkynyl groups. An alkynyl group can be one containing 2 to 20 carbon atoms, preferably 2 to 10 carbon atoms. Examples of alkynyl groups include ethynyl, propynyl, propynyl, 1-butynyl, 2-butynyl, 3-butynyl, 1-pentynyl, 2-pentynyl, 3,3-dimethyl-1-butynyl, 3-ethyl-3-methyl-1-pentynyl, 3,3-diisopropyl-1-pentynyl, phenylethynyl, phenylpropynyl, etc. Among the above, ethynyl, propynyl, propynyl, 1-butynyl, 2-butynyl, 3-butynyl, 1-pentynyl, and phenylethynyl are preferred. Furthermore, the alkynyl group may be optionally substituted.

[0052] Aryl or aromatic group – as used herein, both non-fused and fused systems are considered. The aryl group can be an aryl group having 6 to 30 carbon atoms, preferably an aryl group having 6 to 20 carbon atoms, and more preferably an aryl group having 6 to 12 carbon atoms. Examples of aryl groups include phenyl, biphenyl, terphenyl, triphenylene, tetraphenylene, naphthalene, anthracene, phenanthrene, fluorene, pyrene, phenylene oxide, perylene oxide, and azurite, with phenyl, biphenyl, terphenyl, triphenylene, fluorene, and naphthalene being preferred. Examples of non-fused aryl groups include phenyl, biphenyl-2-yl, biphenyl-3-yl, biphenyl-4-yl, p-terphenyl-4-yl, p-terphenyl-3-yl, p-terphenyl-2-yl, m-terphenyl-4-yl, m-terphenyl-3-yl, m-terphenyl-2-yl, o-tolyl, m-tolyl, p-tolyl, p-(2-phenylpropyl)phenyl, 4'-methylbiphenyl, 4''-tert-butyl-p-terphenyl-4-yl, o-cumyl, m-cumyl, p-cumyl, 2,3-xylyl, 3,4-xylyl, 2,5-xylyl, mesitylene, and m-tetraphenyl. Additionally, the aryl group may optionally be substituted.

[0053] Heterocyclic groups or heterocycles – as used herein, non-aromatic cyclic groups are considered. Non-aromatic heterocyclic groups include saturated heterocyclic groups having 3-20 ring atoms and unsaturated non-aromatic heterocyclic groups having 3-20 ring atoms, wherein at least one ring atom is selected from the group consisting of nitrogen, oxygen, sulfur, selenium, silicon, phosphorus, germanium, and boron atoms. Preferred non-aromatic heterocyclic groups are those having 3 to 7 ring atoms, including at least one heteroatom such as nitrogen, oxygen, silicon, or sulfur. Examples of non-aromatic heterocyclic groups include ethylene oxide, oxetane, tetrahydrofuranyl, tetrahydropyranyl, dioxopentacyclic, dioxahexacyclic, acridineyl, dihydropyrroleyl, tetrahydropyrroleyl, piperidinyl, oxazolidinyl, morpholinyl, piperazineyl, oxetane-heptanetrienyl, thioheptanetrienyl, azirane-heptanetrienyl, and tetrahydrothiorroleyl. In addition, the heterocyclic group can be optionally substituted.

[0054] Heteroaryl – as used herein, can be a non-fused or fused heteroaryl group comprising 1 to 5 heteroatoms, wherein at least one heteroatom is selected from the group consisting of nitrogen, oxygen, sulfur, selenium, silicon, phosphorus, germanium, and boron. Isoaryl also refers to heteroaryl. Heteroaryl can be a heteroaryl having 3 to 30 carbon atoms, preferably a heteroaryl having 3 to 20 carbon atoms, and more preferably a heteroaryl having 3 to 12 carbon atoms. Suitable heteroaryl groups include dibenzothiophene, dibenzofuran, dibenzoselenophene, furan, thiophene, benzofuran, benzothiophene, benzoselenophene, carbazole, indolecarbazole, pyridineindole, pyrrolopyridine, pyrazole, imidazole, triazole, oxazole, thiazole, oxadiazole, oxtriazole, dioxazole, thiadiazol, pyridine, pyrazine, pyrazine, triazine, oxazine, oxthiazine, oxadiazine, indole, benzimidazole, indazole, indoxazine, benzoxazole, benzoisoxazole, benzothiazole, quinoline, isoquinoline Phosphine, cyclophosphine, quinazoline, quinoxaline, naphthidine, phthalazine, pteridine, xanthan, acridine, phenazine, phenothiazine, benzofuranopyridine, furanodipyridine, benzothiophenopyridine, thiophenodipyridine, benzoselenophenopyridine, selenobenzodipyridine, preferably dibenzothiophene, dibenzofuran, dibenzoselenophene, carbazole, indolocarbazole, imidazole, pyridine, triazine, benzimidazole, 1,2-azaborane, 1,3-azaborane, 1,4-azaborane, boronazole and its aza analogues. Additionally, the heteroaryl group may optionally be substituted.

[0055] Alkoxy groups – as used herein, are represented by -O-alkyl, -O-cycloalkyl, -O-heteroalkyl, or -O-heterocyclic groups. Examples and preferred examples of alkyl, cycloalkyl, heteroalkyl, and heterocyclic groups are the same as described above. An alkoxy group can be an alkoxy group having 1 to 20 carbon atoms, preferably an alkoxy group having 1 to 6 carbon atoms. Examples of alkoxy groups include methoxy, ethoxy, propoxy, butoxy, pentoxy, hexoxy, cyclopropyloxy, cyclobutyloxy, cyclopentoxy, cyclohexyloxy, tetrahydrofuranyloxy, tetrahydropyranyloxy, methoxypropyloxy, ethoxyethyloxy, methoxymethyloxy, and ethoxymethyloxy. Additionally, alkoxy groups may optionally be substituted.

[0056] Aryloxy group – as used herein, is represented by -O-aryl or -O-heteroaryl. Examples and preferred examples of aryl and heteroaryl groups are the same as described above. The aryloxy group can be an aryloxy group having 6 to 30 carbon atoms, preferably an aryloxy group having 6 to 20 carbon atoms. Examples of aryloxy groups include phenoxy and biphenyloxy groups. Additionally, the aryloxy group may optionally be substituted.

[0057] Arylalkyl – As used herein, this encompasses aryl-substituted alkyl groups. An arylalkyl group can be an arylalkyl group having 7 to 30 carbon atoms, preferably an arylalkyl group having 7 to 20 carbon atoms, and more preferably an arylalkyl group having 7 to 13 carbon atoms. Examples of arylalkyl groups include benzyl, 1-phenylethyl, 2-phenylethyl, 1-phenylisopropyl, 2-phenylisopropyl, phenyl tert-butyl, α-naphthylmethyl, 1-α-naphthyl-ethyl, 2-α-naphthylethyl, 1-α-naphthylisopropyl, 2-α-naphthylisopropyl, β-naphthylmethyl, 1-β-naphthyl-ethyl, 2-β-naphthyl-ethyl, 1-β-naphthylisopropyl, 2-β-naphthylisopropyl, p-methylbenzyl, m-methylbenzyl The compounds include alkyl groups, such as o-methylbenzyl, p-chlorobenzyl, m-chlorobenzyl, o-chlorobenzyl, p-bromobenzyl, m-bromobenzyl, o-bromobenzyl, p-iodobenzyl, m-iodobenzyl, o-iodobenzyl, p-hydroxybenzyl, m-hydroxybenzyl, o-hydroxybenzyl, p-aminobenzyl, m-aminobenzyl, o-aminobenzyl, p-nitrobenzyl, m-nitrobenzyl, o-nitrobenzyl, p-cyanobenzyl, m-cyanobenzyl, o-cyanobenzyl, 1-hydroxy-2-phenylisopropyl, and 1-chloro-2-phenylisopropyl. Among the above, benzyl, p-cyanobenzyl, m-cyanobenzyl, o-cyanobenzyl, 1-phenylethyl, 2-phenylethyl, 1-phenylisopropyl, and 2-phenylisopropyl are preferred. Additionally, the alkyl group may optionally be substituted.

[0058] Alkylsilyl – As used herein, this encompasses alkyl-substituted silyl groups. The alkylsilyl group can be an alkylsilyl group having 3 to 20 carbon atoms, preferably an alkylsilyl group having 3 to 10 carbon atoms. Examples of alkylsilyl groups include trimethylsilyl, triethylsilyl, methyldiethylsilyl, ethyldimethylsilyl, tripropylsilyl, tributylsilyl, triisopropylsilyl, methyldiisopropylsilyl, dimethylisopropylsilyl, tritert-butylsilyl, triisobutylsilyl, dimethyltert-butylsilyl, and methylditert-butylsilyl. Additionally, the alkylsilyl group may optionally be substituted.

[0059] Arylsilane – As used herein, encompasses at least one aryl-substituted silane group. The arylsilane can be an arylsilane having 6 to 30 carbon atoms, preferably an arylsilane having 8 to 20 carbon atoms. Examples of arylsilanes include triphenylsilyl, phenyldiphenylsilyl, diphenylbiphenylsilyl, phenyldiethylsilyl, diphenylethylsilyl, phenyldimethylsilyl, diphenylmethylsilyl, phenyldiisopropylsilyl, diphenylisopropylsilyl, diphenylbutylsilyl, diphenylisobutylsilyl, and diphenyltert-butylsilyl. Additionally, the arylsilane may optionally be substituted.

[0060] Alkylgermanium group – As used herein, this encompasses alkyl-substituted germanium groups. The alkylgermanium group can be an alkylgermanium group having 3 to 20 carbon atoms, preferably an alkylgermanium group having 3 to 10 carbon atoms. Examples of alkylgermanium groups include trimethylgermanium, triethylgermanium, methyldiethylgermanium, ethyldimethylgermanium, tripropylgermanium, tributylgermanium, triisopropylgermanium, methyldiisopropylgermanium, dimethylisopropylgermanium, tritert-butylgermanium, triisobutylgermanium, dimethyltert-butylgermanium, and methylditert-butylgermanium. Additionally, the alkylgermanium group may optionally be substituted.

[0061] Arylgermanium – As used herein, this encompasses a germanium group substituted with at least one aryl or heteroaryl group. The arylgermanium group can be an arylgermanium group having 6 to 30 carbon atoms, preferably an arylgermanium group having 8 to 20 carbon atoms. Examples of arylgermanium groups include triphenylgermanium, phenyldiphenylgermanium, diphenylbiphenylgermanium, phenyldiethylgermanium, diphenylethylgermanium, phenyldimethylgermanium, diphenylmethylgermanium, phenyldiisopropylgermanium, diphenylisopropylgermanium, diphenylbutylgermanium, diphenylisobutylgermanium, and diphenyltert-butylgermanium. Additionally, the arylgermanium group may optionally be substituted.

[0062] The term "aza" in azadibenzofuran, azadibenzothiophene, etc., refers to the substitution of one or more CH groups in the corresponding aromatic segment by a nitrogen atom. For example, azatriphenylene includes dibenzo[f,h]quinoxaline, dibenzo[f,h]quinoline, and other analogs having two or more nitrogen atoms in the ring system. Other nitrogen analogs of the aforementioned aza derivatives will readily conceive of those skilled in the art, and all such analogs are identified as being included in the terminology used herein.

[0063] In this disclosure, unless otherwise defined, the term "substituted alkyl", "substituted cycloalkyl", "substituted heteroalkyl", "substituted heterocyclic", "substituted aralkyl", "substituted alkoxy", "substituted aryl", "substituted alkenyl", "substituted alkynyl", "substituted heteroaryl", "substituted alkylsilyl", "substituted arylsilyl", "substituted alkylgermanium", "substituted arylgermanium", "substituted amino", "substituted acyl", "substituted carbonyl", and "substituted carboxylic acid" are used interchangeably. The substituted ester group, substituted sulfinyl group, substituted sulfonyl group, substituted phosphinyl group refers to any one of the following groups: alkyl, cycloalkyl, heteroalkyl, heterocyclic, aralkyl, alkoxy, aryloxy, alkenyl, alkynyl, aryl, heteroaryl, alkylsilyl, arylsilyl, alkylgermanium, arylgermanium, amino, acyl, carbonyl, carboxylic acid, ester, sulfinyl, sulfonyl, and phosphinyl groups. One or more groups can be selected from deuterium, halogen, unsubstituted alkyl groups having 1-20 carbon atoms. Cycloalkyl groups having 3-20 carbon atoms, unsubstituted heteroalkyl groups having 1-20 carbon atoms, unsubstituted heterocyclic groups having 3-20 carbon atoms, unsubstituted aralkyl groups having 7-30 carbon atoms, unsubstituted alkoxy groups having 1-20 carbon atoms, unsubstituted aryloxy groups having 6-30 carbon atoms, unsubstituted alkenyl groups having 2-20 carbon atoms, unsubstituted alkynyl groups having 2-20 carbon atoms, and unsubstituted alkyne groups having 6-30 carbon atoms. Aryl, unsubstituted heteroaryl with 3-30 carbon atoms, unsubstituted alkylsilyl with 3-20 carbon atoms, unsubstituted arylsilyl with 6-20 carbon atoms, unsubstituted alkylgermanium with 3-20 carbon atoms, unsubstituted arylgermanium with 6-20 carbon atoms, unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, mercapto, sulfinyl, sulfonyl, phosphine, and combinations thereof with 0-20 carbon atoms.

[0064] It should be understood that when a molecular fragment is described as a substituent or otherwise attached to another part, its name may be written according to whether it is a fragment (e.g., phenyl, phenylene, naphthyl, dibenzofuranyl) or according to whether it is a whole molecule (e.g., benzene, naphthalene, dibenzofuran). As used herein, these different ways of specifying substituents or attaching fragments are considered equivalent.

[0065] In the compounds mentioned in this disclosure, hydrogen atoms can be partially or completely replaced by deuterium. Other atoms such as carbon and nitrogen can also be replaced by their other stable isotopes. Substitution with other stable isotopes in the compounds is likely preferred due to their ability to enhance device efficiency and stability.

[0066] In the compounds mentioned in this disclosure, multiple substitution refers to the range including disubstitution, up to the maximum number of available substitutions. When a substituent in a compound mentioned in this disclosure represents multiple substitution (including disubstitution, trisubstitution, tetrasubstitution, etc.), it means that the substituent can be present at multiple available substitution positions on its linkage structure. The substituent present at multiple available substitution positions can be the same structure or different structures.

[0067] In the compounds mentioned in this disclosure, unless explicitly specified, for example, that adjacent substituents can optionally connect to form a ring, adjacent substituents in the compounds cannot connect to form a ring. In the compounds mentioned in this disclosure, the optional connection of adjacent substituents to form a ring includes both cases where adjacent substituents can connect to form a ring and cases where adjacent substituents do not connect to form a ring. When adjacent substituents can optionally connect to form a ring, the formed ring can be a monocyclic or polycyclic ring (including spirocyclic, bridged, fused rings, etc.), as well as an alicyclic, heterocyclic, aromatic, or heteroaromatic ring. In this context, adjacent substituents can refer to substituents bonded to the same atom, substituents bonded to carbon atoms directly bonded to each other, or substituents bonded to carbon atoms further away. Preferably, adjacent substituents refer to substituents bonded to the same carbon atom and substituents bonded to carbon atoms directly bonded to each other.

[0068] The statement that adjacent substituents can optionally connect to form a ring is also intended to be understood as referring to two substituents bonded to the same carbon atom connecting to each other via chemical bonds to form a ring, as exemplified by the following formula:

[0069] .

[0070] The statement that adjacent substituents can optionally link to form a ring is also intended to be understood as referring to two substituents bonded to carbon atoms directly bonded to each other forming a ring through chemical bonds, as exemplified by the following formula:

[0071] .

[0072] The statement that adjacent substituents can optionally connect to form a ring is also intended to be understood as referring to two substituents bonded to a further distant carbon atom connecting to each other by chemical bonds to form a ring, which can be exemplified by the following formula:

[0073] .

[0074] Furthermore, the statement that adjacent substituents can optionally connect to form a ring is also intended to mean that, in the case where one of the two adjacent substituents represents hydrogen, the second substituent bonds to the position where the hydrogen atom is bonded, thereby forming a ring. This is illustrated by the following example:

[0075] .

[0076] According to one embodiment of the present invention, a compound having the structure of Formula 1 is disclosed:

[0077]

[0078] Among them, Cy1, Cy3, Cy4, Cy5 and Cy7 are selected from unsaturated carbon rings with 5-30 carbon atoms or unsaturated heterocycles with 3-30 carbon atoms each time they appear.

[0079] Cy2 and Cy6 are selected, either identically or differently, from aromatic rings having 6-18 carbon atoms or heteroaromatic rings having 3-18 carbon atoms each time they appear;

[0080] Z1, Z2, and Z4 are selected from B, N, P, P=O, P=S, As, As=O, As=S, SiR, or GeR each time they appear;

[0081] Z3 is selected from B, P, P=O, P=S, As, As=O, As=S, SiR, or GeR each time it appears;

[0082] L1, L2, L3, L4, L5, and L6 are selected from single bonds, O, S, Se, BR', NR', PR', P=OR', P=SR', AsR', As=OR', As=SR', CR'R', SiR'R', or GeR'R' each time they appear; when two R's exist simultaneously, the two R's are the same or different.

[0083] a, b, c, d, e, and f are each independently selected from 0 or 1;

[0084] g is selected from 0 or 1, and satisfies the following conditions:

[0085] When g is 1, Y is selected from O, S, Se, and CR. g GeR g R g Or C=CR g R g When two R exist simultaneously g At that time, two R g Same or different;

[0086] When g is 0, at least one of the ring Cy1 and the ring Cy7 is selected from a fused aromatic ring having 9-30 carbon atoms or a fused heteroaromatic ring having 8-30 carbon atoms.

[0087] R1, R2, R3, R4, R5, R6, and R7, when they appear in the same or different ways, represent monosubstituted, polysubstituted, or unsubstituted substances.

[0088] R, R', R g R1, R2, R3, R4, R5, R6, and R7, each time appearing, are selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 ring carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 ring atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, and substituted... Or unsubstituted alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, -BR''R'', and combinations thereof;

[0089] The R'', each time appearing, is selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic carbon atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, substituted or unsubstituted... Alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, and combinations thereof having 0-20 carbon atoms;

[0090] Adjacent substituents R', R g R'', R1, R2, R3, R4, R5, R6 and R7 can be optionally connected to form a ring.

[0091] In this embodiment, "unsaturated carbon ring" includes aromatic unsaturated carbon ring (i.e., aromatic ring) and non-aromatic unsaturated carbon ring; "unsaturated heterocycle" includes aromatic unsaturated heterocycle (i.e., heteroaromatic ring) and non-aromatic unsaturated heterocycle.

[0092] In this embodiment, g = 1 indicates that ring Cy1 and ring Cy7 are connected by Y; g = 0 indicates that Y does not exist, in which case ring Cy1 and ring Cy7 are not connected by Y.

[0093] In this embodiment, Y can be connected to ring Cy1 or ring Cy7 via a single bond or a double bond. For example, when g is 1, Y is selected from CR. g At this time, Y is connected to either Cy1 or Cy7 via a double bond. Cy1 and Cy7 are not simultaneously benzene rings, pyridine rings, or other rings that cannot form an exocyclic double bond (i.e., a double bond connecting Y).

[0094] In this paper, "adjacent substituents R', R g "R'', R1, R2, R3, R4, R5, R6, and R7 can optionally be connected to form a ring" is intended to indicate that adjacent substituent groups therein, for example, between two substituents R'', between two substituents R'', between two substituents R1, between two substituents R2, between two substituents R3, between two substituents R4, between two substituents R5, between two substituents R6, between two substituents R7, between substituents R1 and R2, between substituents R2 and R3, between substituents R3 and R4, between substituents R4 and R5, between substituents R5 and R6, between substituents R6 and R7, between substituents R7 and R1, between substituents R1 and R', between substituents R2 and R', between substituents R3 and R', between substituents R4 and R', between substituents R5 and R', between substituents R6 and R', between substituents R7 and R', between substituents R g Between R1 and substituent R g Between R7 and R8, any one or more of these substituents can connect to form a ring. Obviously, these substituents can also remain unconnected to form a ring.

[0095] According to one embodiment of the present invention, wherein the rings Cy1, Cy3, Cy4, Cy5 and Cy7, each time they appear, are selected from five-membered unsaturated carbon rings, aromatic rings having 6-18 carbon atoms or heteroaromatic rings having 3-18 carbon atoms.

[0096] According to one embodiment of the present invention, wherein the rings Cy1, Cy3, Cy4, Cy5, and Cy7, each time they appear, are selected from the same or different groups of benzene rings, pyridine rings, naphthyl rings, phenanthrene rings, anthracene rings, indene rings, fluorene rings, indole rings, carbazole rings, benzofuran rings, dibenzofuran rings, benzothiophene rings, dibenzothiophene rings, benzothiophene rings, dibenzothiophene rings, dibenzoselenene rings, and cyclopentadiene. Cy2 ring, furan ring, thiophene ring, thiophene ring, or combinations thereof; Cy2 ring and Cy6 ring, each time appearing, are selected from the same or different groups of benzene ring, pyridine ring, naphthyl ring, phenanthrene ring, anthracene ring, indene ring, fluorene ring, indole ring, carbazole ring, benzofuran ring, dibenzofuran ring, benzothiophene ring, dibenzothiophene ring, benzothiophene ring, dibenzothelenophene ring, furan ring, thiophene ring, thiophene ring, or combinations thereof.

[0097] According to one embodiment of the present invention, the rings Cy2, Cy3, Cy4, Cy5 and Cy6 are all selected from benzene rings, and the rings Cy1 and Cy7 are selected from benzene rings or naphthalene rings each time they appear.

[0098] According to one embodiment of the present invention, the rings Cy1, Cy2, Cy3, Cy4, Cy5, Cy6 and Cy7 are all selected from benzene rings.

[0099] According to one embodiment of the present invention, g is 0, and at least one of the ring Cy1 and ring Cy7 is selected from naphthalene ring, phenanthrene ring, anthracene ring, indene ring, fluorene ring, indole ring, carbazole ring, benzofuran ring, dibenzofuran ring, benzothiophene ring, dibenzothiophene ring, benzothiophene ring, dibenzothiophene ring, dibenzoselenene ring, or combinations thereof.

[0100] According to one embodiment of the present invention, the compound has a structure represented by any one of Formulas 1-1 to 1-4:

[0101] , , , ;

[0102] Wherein, X1 is selected from O, S, Se or NR each time it appears, either the same or different. x1 ;

[0103] X2 is selected from CR each time it appears, either the same or different. x2 SiR x2 , N or P;

[0104] Z1, Z2, and Z4 are selected from B, N, P, P=O, P=S, As, As=O, As=S, SiR, or GeR each time they appear;

[0105] Z3 is selected from B, P, P=O, P=S, As, As=O, As=S, SiR, or GeR each time it appears;

[0106] L1, L2, L3, L4, L5, and L6 are selected from single bonds, O, S, Se, BR', NR', PR', P=OR', P=SR', AsR', As=OR', As=SR', CR'R', SiR'R', or GeR'R' each time they appear; when two R's exist simultaneously, the two R's are the same or different.

[0107] a, b, c, d, e, and f are each independently selected from 0 or 1;

[0108] g is selected from 0 or 1, and satisfies the following conditions:

[0109] When g is 1, Y is selected from O, S, Se, and GeR. g R g Or C=CR g R g When two R exist simultaneously g At that time, two R g Same or different;

[0110] When g is 0, two adjacent substituents R1 and / or two adjacent substituents R7 connect to form a substituted or unsubstituted aromatic ring with 6-30 carbon atoms or a substituted or unsubstituted heteroaromatic ring with 3-30 carbon atoms.

[0111] R1, R2, R3, R4, R5, R6, and R7, when they appear in the same or different ways, represent monosubstituted, polysubstituted, or unsubstituted substances.

[0112] R x1 R x2 ,R,R',R gR1, R2, R3, R4, R5, R6, and R7, each time appearing, are selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 ring carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 ring atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, and substituted... Or unsubstituted alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, -BR''R'', and combinations thereof;

[0113] The R'', each time appearing, is selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic carbon atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, substituted or unsubstituted... Alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, and combinations thereof having 0-20 carbon atoms;

[0114] Adjacent substituent R x1 R x2 ,R',R gR'', R1, R2, R3, R4, R5, R6 and R7 can be optionally connected to form a ring.

[0115] In this paper, "adjacent substituent R" x1 R x2 ,R',R g "R'', R1, R2, R3, R4, R5, R6, and R7 can optionally be connected to form a ring" is intended to indicate that adjacent substituent groups therein, for example, between two substituents R'', between two substituents R'', between two substituents R1, between two substituents R2, between two substituents R3, between two substituents R4, between two substituents R5, between two substituents R6, between two substituents R7, between substituents R1 and R2, between substituents R2 and R3, between substituents R3 and R4, between substituents R4 and R5, between substituents R5 and R6, between substituents R6 and R7, between substituents R7 and R1, between substituents R1 and R', between substituents R2 and R', between substituents R3 and R', between substituents R4 and R', between substituents R5 and R', between substituents R6 and R', between substituents R7 and R', between substituents R g Between R1 and substituent R g Between R7 and the substituent R x1 Between R4 and substituent R x1 Between R2 and substituent R x2 Between R6 and R6, any one or more of these substituents can connect to form a ring. Obviously, these substituents can also remain unconnected to form a ring.

[0116] According to one embodiment of the present invention, the compound has a structure represented by Formula 1-1.

[0117] According to one embodiment of the present invention, X1 is selected from O, S or NR. x1 The R x1 Each time it appears, it is selected from the group consisting of the same or different groups of the following: substituted or unsubstituted alkyl groups having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3 to 20 cyclic carbon atoms, substituted or unsubstituted aryl groups having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3 to 30 carbon atoms, and combinations thereof.

[0118] According to one embodiment of the present invention, X1 is selected from O or S.

[0119] According to one embodiment of the present invention, X2 is selected from N.

[0120] According to one embodiment of the present invention, L1, L2, L3, L4, L5 and L6 are selected from single bonds, O, S, Se, BR', NR', P=OR', CR'R' or SiR'R' each time they appear; and R' is selected from the group consisting of: substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, and combinations thereof.

[0121] According to one embodiment of the present invention, L1, L2, L3, L4, L5 and L6 are selected from single bonds, O, S, NR' or CR'R' each time they appear; and R' is selected from the group consisting of: substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, and combinations thereof.

[0122] According to one embodiment of the present invention, L1, L2, L3, L4, L5 and L6 are selected from single bonds, O or S each time they appear.

[0123] According to one embodiment of the present invention, a+b+c+d+e+f=0, 1 or 2.

[0124] According to one embodiment of the present invention, a+b+d+e = 0, 1 or 2.

[0125] According to one embodiment of the present invention, b+e = 0, 1 or 2.

[0126] According to one embodiment of the present invention, g is 1, and Y is selected from O, S or Se.

[0127] According to one embodiment of the present invention, g is 1, and Y is selected from O or S.

[0128] According to one embodiment of the present invention, g is 1, and Y is selected from GeR. g R g .

[0129] According to one embodiment of the present invention, g is 1, and Y is selected from C=CR. g R g .

[0130] According to one embodiment of the present invention, when g is 1, Y is selected from C=CR. g R g When, substituent R g With R1 and / or substituent R g It connects with R7 to form a ring.

[0131] According to one embodiment of the present invention, when g is 1, Y is selected from C=CR. g R g When, substituent R g With R1 and / or substituent R g It connects with R7 to form an aromatic ring or a heteroaromatic ring.

[0132] According to one embodiment of the present invention, where g is 0, two adjacent substituents R1 and / or two adjacent substituents R7 are connected to form a substituted or unsubstituted aromatic ring having 6-12 carbon atoms or a substituted or unsubstituted heteroaromatic ring having 3-12 carbon atoms.

[0133] According to one embodiment of the present invention, g is 0, and two adjacent substituents R1 and / or two adjacent substituents R7 are connected to form a substituted or unsubstituted benzene ring.

[0134] According to one embodiment of the present invention, the compound has a structure represented by any one of formulas 1-1-1 to 1-1-6:

[0135] , , , , , ;

[0136] Among them, Z1, Z2 and Z4 are selected from B, N, P, P=O, P=S, As, As=O, As=S, SiR or GeR each time they appear;

[0137] Z3 is selected from B, P, P=O, P=S, As, As=O, As=S, SiR, or GeR each time it appears;

[0138] R1, R2, R3, R4, R5, R6, R7, R1' and R7' appear in the same or different ways each time they represent monosubstitution, polysubstitution or no substitution;

[0139] R, R1, R2, R3, R4, R5, R6, R7, R1', and R7' are selected, in the same or different manner, from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic carbon atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, and substituted or unsubstituted alkenes having 2-20 carbon atoms. Alkyl, substituted or unsubstituted alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, -BR''R'', and combinations thereof;

[0140] The R'', each time appearing, is selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic carbon atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, substituted or unsubstituted... Alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, and combinations thereof having 0-20 carbon atoms;

[0141] Adjacent substituents R, R'', R1, R2, R3, R4, R5, R6, R7, R1', and R7' can optionally be linked to form a ring.

[0142] According to one embodiment of the present invention, Z1, Z2 and Z4 are selected from B, N, P, P=O or P=S each time they appear, and Z3 is selected from B, P, P=O or P=S each time it appears, and at least one of Z1, Z2 and Z4 is selected from B, P, P=O or P=S each time it appears.

[0143] According to one embodiment of the present invention, Z1, Z2 and Z4 are selected from B, N or P=O each time they appear, and Z3 is selected from B or P=O each time it appears, and at least two of Z1, Z2, Z3 and Z4 are selected from B or P=O each time they appear.

[0144] According to one embodiment of the present invention, Z1 and Z4 are selected from N, and Z2 and Z3 are selected from B.

[0145] According to one embodiment of the present invention, R g R1, R2, R3, R4, R5, R6, and R7, each time appearing, are selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 ring carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 ring atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted amino, cyano, isocyano groups having 0-20 carbon atoms, and combinations thereof; adjacent substituents R g R1, R2, R3, R4, R5, R6, and R7 can be optionally connected to form a ring.

[0146] According to one embodiment of the present invention, R g R1, R2, R3, R4, R5, R6, and R7, each time appearing, are selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-12 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-12 cyclic carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-10 carbon atoms, substituted or unsubstituted aryl groups having 6-24 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-24 carbon atoms, substituted or unsubstituted amino groups having 0-20 carbon atoms, cyano groups, and combinations thereof; adjacent substituents R g R1, R2, R3, R4, R5, R6, and R7 can be optionally connected to form a ring.

[0147] According to one embodiment of the present invention, R g R1, R2, R3, R4, R5, R6, and R7 are selected, each time appearing in the same or different groups of the following: hydrogen, deuterium, fluorine, cyano, methyl, ethyl, n-propyl, isopropyl, cyclopropyl, n-butyl, isobutyl, tert-butyl, cyclopentyl, neopentyl, cyclohexyl, trimethylsilyl, phenyl, pyridyl, furanyl, thiophene, pyrrole, biphenyl, terphenyl, tetraphenyl, triphenylene, tetraphenylene, naphthyl, phenanthrene, anthracene, indene, fluorene, indole, carbazole, benzofuran, dibenzofuran, benzothiophene, dibenzothiophene, dibenzothiophene, dibenzoselenophene, diphenylamino, dibenzofuranylphenylamino, and combinations thereof.

[0148] According to one embodiment of the invention, at least one of R1, R2, R3, R4, R5, R6 and R7, when appearing in the same or different manner, is selected from the group consisting of: deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted amino groups having 0-20 carbon atoms, cyano groups, isocyano groups, and combinations thereof; adjacent substituents R1, R2, R3, R4, R5, R6 and R7 can optionally be linked to form a ring.

[0149] According to one embodiment of the invention, at least one of R1, R2, R3, R4, R5, R6 and R7, when appearing in the same or different manner, is selected from the group consisting of: deuterium, halogen, substituted or unsubstituted alkyl groups having 1-12 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-12 cyclic carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-10 carbon atoms, substituted or unsubstituted aryl groups having 6-24 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-24 carbon atoms, substituted or unsubstituted amino groups having 0-20 carbon atoms, cyano groups, and combinations thereof; adjacent substituents R1, R2, R3, R4, R5, R6 and R7 can optionally be linked to form a ring.

[0150] According to one embodiment of the invention, at least one of R1, R2, R3, R4, R5, R6 and R7, when appearing in the same or different manner, is selected from the group consisting of: deuterium, fluorine, cyano, methyl, ethyl, n-propyl, isopropyl, cyclopropyl, n-butyl, isobutyl, tert-butyl, cyclopentyl, neopentyl, cyclohexyl, trimethylsilyl, phenyl, pyridyl, furanyl, thiophene, pyrrole, biphenyl, terphenyl, tetraphenyl, triphenylene, tetraphenylene, naphthyl, phenanthrene, anthracene, indene, fluorene, indole, carbazole, benzofuran, dibenzofuran, benzothiophene, dibenzothiophene, dibenzothiophene, dibenzoselenophene, diphenylamino, dibenzofuranylphenylamino, and combinations thereof.

[0151] According to one embodiment of the present invention, a compound having the structure of Formula 1 is disclosed:

[0152]

[0153] Among them, Cy1, Cy2, Cy3, Cy4, Cy5, Cy6 and Cy7 are selected from unsaturated carbon rings with 5-30 carbon atoms or unsaturated heterocycles with 3-30 carbon atoms each time they appear.

[0154] Z1, Z2, Z3, and Z4 are selected from B, N, P, P=O, P=S, As, As=O, As=S, SiR, or GeR each time they appear;

[0155] L1, L2, L3, L4, L5, and L6 are selected from single bonds, O, S, Se, BR', NR', PR', P=OR', P=SR', AsR', As=OR', As=SR', CR'R', SiR'R', or GeR'R' each time they appear; when two R's exist simultaneously, the two R's are the same or different.

[0156] a, b, c, d, e, and f are each independently selected from 0 or 1;

[0157] g is 1, and Y is selected from O, S, Se, and CR. g GeR g R g Or C=CR g R g When two R exist simultaneously g At that time, two R g Same or different;

[0158] R1, R2, R3, R4, R5, R6, and R7, when they appear in the same or different ways, represent monosubstituted, polysubstituted, or unsubstituted substances.

[0159] R, R', R gR1, R2, R3, R4, R5, R6, and R7, each time appearing, are selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 ring carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 ring atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, and substituted... Or unsubstituted alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, -BR''R'', and combinations thereof;

[0160] The R'', each time appearing, is selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic carbon atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, substituted or unsubstituted... Alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, and combinations thereof having 0-20 carbon atoms;

[0161] Adjacent substituents R', R g R'', R1, R2, R3, R4, R5, R6 and R7 can be optionally connected to form a ring.

[0162] According to one embodiment of the present invention, wherein the rings Cy1, Cy2, Cy3, Cy4, Cy5, Cy6 and Cy7 are selected, in the same or different ways, from five-membered unsaturated carbon rings, aromatic rings having 6-18 carbon atoms or heteroaromatic rings having 3-18 carbon atoms each time they appear.

[0163] According to one embodiment of the present invention, wherein the rings Cy1, Cy2, Cy3, Cy4, Cy5, Cy6 and Cy7, each time they appear, are selected from the same or different groups of benzene rings, pyridine rings, naphthyl rings, phenanthrene rings, anthracene rings, indene rings, fluorene rings, indole rings, carbazole rings, benzofuran rings, dibenzofuran rings, benzothiophene rings, dibenzothiophene rings, benzothiophene rings, dibenzothiophene rings, dibenzoselenophene rings, cyclopentadiene rings, furan rings, thiophene rings, thiophene rings, or combinations thereof.

[0164] According to one embodiment of the present invention, in Formula 1, L1, L2, L3, L4, L5 and L6 are selected from single bonds, O, S, Se, BR', NR', C=O, PR', P=OR', P=SR', AsR', As=OR', As=SR', CR'R', SiR'R' or GeR'R' when they appear in the same way or different.

[0165] According to one embodiment of the present invention, in Formula 1, when g is 1, Y is selected from O, S, Se, and CR. g C=O, GeR g R g Or C=CR g R g When two R exist simultaneously g At that time, two R g Same or different.

[0166] According to one embodiment of the present invention, the compounds are selected from the group consisting of compounds BN-1-A1-k1, BN-2-A2-k2, compounds 3-1-1 to 3-1-60, compounds 3-2-1 to 3-2-22, compounds 3-3-1 to 3-3-78, compounds 3-4-1 to 3-4-7, compounds 3-5-1 to 3-5-60, compounds 3-6-1 to 3-6-10, and compounds 3-7-1 to 3-7-62; in compounds BN-1-A1-k1 and BN-2-A2-k2, A1 is selected from integers from 1 to 12, A... 2 is an integer selected from 1 to 10, k1 is an integer selected from 1 to 306, and k2 is an integer selected from 1 to 166; the specific structures of compounds BN-1-1-k1 to BN-1-12-k1, compounds 2-1-k1 to 2-10-k1, compounds 3-1-1 to 3-1-60, compounds 3-2-1 to 3-2-22, compounds 3-3-1 to 3-3-78, compounds 3-4-1 to 3-4-7, compounds 3-5-1 to 3-5-60, compounds 3-6-1 to 3-6-10, and compounds 3-7-1 to 3-7-62 are given in claim 9.

[0167] In this embodiment, A1 is selected from integers from 1 to 12. Therefore, compound BN-1-A1-k1 represents compounds BN-1-1-1 to BN-1-1-306, compounds BN-1-2-1 to BN-1-2-306, compounds BN-1-3-1 to BN-1-3-306, compounds BN-1-4-1 to BN-1-4-306, compounds BN-1-5-1 to BN-1-5-306, compounds BN-1-6-1 to BN-1-6-306, and compounds BN-1-7-1 to B Compounds BN-1-7-306, BN-1-8-1 to BN-1-8-306, BN-1-9-1 to BN-1-9-306, BN-1-10-1 to BN-1-10-306, BN-1-11-1 to BN-1-11-306, and BN-1-12-1 to BN-1-12-306; taking compounds BN-1-1-1 to BN-1-1-306 as examples, all compounds BN-1-1-1 to BN-1-1-306 have a skeletal structure. In compound BN-1-1-1, R1, R2, R3, R4, R5, R6, R7, and Y are selected from the atoms or groups corresponding to k1 being 1. Therefore, the structure of compound BN-1-1-1 is... In compound BN-1-1-93, R1, R2, R3, R4, R5, R6, R7, and Y are selected from the atoms or groups corresponding to k1 being 93. Therefore, the structure of compound BN-1-1-93 is... In compound BN-1-1-246, R1, R2, R3, R4, R5, R6, R7, and Y are selected from the atoms or groups corresponding to k1 being 246. Therefore, the structure of compound BN-1-1-246 is... Similarly, compound BN-2-A1-k1 represents compounds BN-2-1-1 to BN-2-1-166, compounds BN-2-2-1 to BN-2-2-166, compounds BN-2-3-1 to BN-2-3-166, compounds BN-2-4-1 to BN-2-4-166, compounds BN-2-5-1 to BN-2-5-166, compounds BN-2-6-1 to BN-2-6-166, compounds BN-2-7-1 to BN-2-7-166, compounds BN-2-8-1 to BN-2-8-166, compounds BN-2-9-1 to BN-2-9-166, and compounds BN-2-10-1 to BN-2-10-166.

[0168] According to one embodiment of the present invention, the hydrogen in compounds BN-1-1-k1 to BN-1-12-k1, compounds 2-1-k1 to 2-10-k1, compounds 3-1-1 to 3-1-60, compounds 3-2-1 to 3-2-22, compounds 3-3-1 to 3-3-78, compounds 3-4-1 to 3-4-7, compounds 3-5-1 to 3-5-60, compounds 3-6-1 to 3-6-10, and compounds 3-7-1 to 3-7-62 can be partially or completely replaced by deuterium.

[0169] According to one embodiment of the present invention, the compounds are selected from the group consisting of compounds BN-1-A1-k1, BN-2-A2-k2, compounds 3-1-1 to 3-1-60, compounds 3-2-1 to 3-2-22, compounds 3-3-1 to 3-3-78, compounds 3-4-1 to 3-4-7, compounds 3-5-1 to 3-5-60, compounds 3-6-1 to 3-6-10, compounds 3-7-1 to 3-7-62, and compounds 3-8-1 to 3-8-3; in compounds BN-1-A1-k1 and BN-2-A2-k2, A1 is selected from an integer from 1 to 12, and A2 is selected from... The integers 1-10, k1 is selected from the integers 1-306, and k2 is selected from the integers 1-166; the specific structures of compounds BN-1-1-k1 to BN-1-12-k1, compounds 2-1-k1 to 2-10-k1, compounds 3-1-1 to 3-1-60, compounds 3-2-1 to 3-2-22, compounds 3-3-1 to 3-3-78, compounds 3-4-1 to 3-4-7, compounds 3-5-1 to 3-5-60, compounds 3-6-1 to 3-6-10, and compounds 3-7-1 to 3-7-62 are given in claim 9, and the structures of compounds 3-8-1 to 3-8-3 are as follows;

[0170] , , .

[0171] According to one embodiment of the present invention, the hydrogen in compounds BN-1-1-k1 to BN-1-12-k1, compounds 2-1-k1 to 2-10-k1, compounds 3-1-1 to 3-1-60, compounds 3-2-1 to 3-2-22, compounds 3-3-1 to 3-3-78, compounds 3-4-1 to 3-4-7, compounds 3-5-1 to 3-5-60, compounds 3-6-1 to 3-6-10, compounds 3-7-1 to 3-7-62, and compounds 3-8-1 to 3-8-3 can be partially or completely replaced by deuterium.

[0172] According to one embodiment of the present invention, the maximum emission wavelength λ of the photoluminescence spectrum of the compound is... max-PL-1 The range is 580 nm to 800 nm.

[0173] According to one embodiment of the present invention, the maximum emission wavelength λ of the photoluminescence spectrum of the compound is... max-PL-1The wavelength range is 580 nm to 700 nm.

[0174] According to one embodiment of the present invention, the maximum emission wavelength λ of the photoluminescence spectrum of the compound is... max-PL-1 The wavelength range is 580 nm to 680 nm.

[0175] According to one embodiment of the present invention, the maximum emission wavelength λ of the photoluminescence spectrum of the compound is... max-PL-1 The wavelength range is 620 nm to 660 nm.

[0176] According to one embodiment of the present invention, the photoluminescence spectrum of the compound has a full width at half maximum (FWHM) of 1 / 2 inch. PL-1 Less than or equal to 55 nm.

[0177] According to one embodiment of the present invention, the photoluminescence spectrum of the compound has a full width at half maximum (FWHM) of 1 / 2 inch. PL-1 Less than or equal to 45 nm.

[0178] According to one embodiment of the present invention, the photoluminescence spectrum of the compound has a full width at half maximum (FWHM) of 1 / 2 inch. PL-1 Less than or equal to 40 nm.

[0179] According to one embodiment of the present invention, the photoluminescence spectrum of the compound has a full width at half maximum (FWHM) of 1 / 2 inch. PL-1 Less than or equal to 35 nm.

[0180] According to one embodiment of the present invention, an organic electroluminescent device is disclosed, comprising an anode, a cathode, and an organic layer disposed between the anode and the cathode, the organic layer comprising the compound described in any of the foregoing embodiments.

[0181] According to one embodiment of the present invention, the organic layer is a light-emitting layer, and the compound is a light-emitting material.

[0182] According to one embodiment of the present invention, the compound is a fluorescent luminescent material.

[0183] According to one embodiment of the present invention, the compound is a delayed fluorescence luminescent material.

[0184] According to one embodiment of the present invention, the device emits red light.

[0185] According to one embodiment of the present invention, the device emits orange light.

[0186] According to one embodiment of the present invention, the device emits white light.

[0187] According to one embodiment of the present invention, the light-emitting layer comprises at least one host material.

[0188] According to one embodiment of the present invention, the light-emitting layer comprises at least two host materials.

[0189] According to one embodiment of the present invention, the host material comprises at least one chemical group selected from the group consisting of: benzene, pyridine, pyrimidine, triazine, carbazole, azacarbazole, indolecarbazole, dibenzothiophene, azadibenzothiophene, dibenzofuran, azadibenzofuran, dibenzoselenene, triphenylene, azatriphenylene, fluorene, silylfluorene, naphthalene, quinoline, isoquinoline, quinazoline, quinoxaline, phenanthrene, azaphenanthrene, and combinations thereof.

[0190] According to one embodiment of the present invention, the body material may be a conventional body material in the prior art, and may typically, but not limited to, include the following body materials:

[0191] , , , , , , , , , .

[0192] According to one embodiment of the present invention, the light-emitting layer comprises at least a first host material.

[0193] According to one embodiment of the present invention, the first host material has a structure represented by formula PH-1, formula PH-2, or formula PH-3:

[0194] , , ;

[0195] Among them, Y1 is selected from CR each time it appears, either the same or different. y Or N;

[0196] Y2 is selected from C, CR each time it appears, either identically or differently. y Or N;

[0197] L, each time it appears, is selected from single bonds, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, or combinations thereof;

[0198] Ar 21 Ar 22 Ar 31 Ar32 Ar 33 Each time it appears, it is selected from substituted or unsubstituted aryl groups having 6-30 carbon atoms, or substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, either in the same or different manner.

[0199] R y Each time it appears, it is selected from the group consisting of the same or different groups of the following: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic carbon atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, and substituted or unsubstituted alkyl groups having 1-20 carbon atoms. Alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, and combinations thereof having 0-20 carbon atoms;

[0200] Adjacent substituent R y They can be arbitrarily connected to form a ring.

[0201] In this paper, adjacent substituents R y They can be optionally linked to form a ring, intended to represent any adjacent substituent R therein. y They can connect to form a ring. It is obvious that any adjacent substituents R... y They can also be left unconnected to form a loop.

[0202] According to one embodiment of the present invention, the first host material has a structure represented by formula PH-1-1, formula PH-2-1, or formula PH-3-1:

[0203] , , ;

[0204] Among them, Y1, Y2, and Y3 are selected from CR each time they appear, either identically or differently. y Or N;

[0205] Ar 21Ar 22 Ar 32 Ar 33 Each time it appears, it is selected from substituted or unsubstituted aryl groups having 6-30 carbon atoms, or substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, either in the same or different manner.

[0206] L, each time it appears, is selected from single bonds, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, or combinations thereof;

[0207] R y Each time it appears, it is selected from the group consisting of the same or different groups of the following: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic carbon atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, and substituted or unsubstituted alkyl groups having 1-20 carbon atoms. Alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, and combinations thereof having 0-20 carbon atoms;

[0208] Adjacent substituent R y They can be arbitrarily connected to form a ring.

[0209] According to one embodiment of the present invention, the first host material is selected from the group consisting of compounds 1-1-1 to 1-1-104, compounds 1-2-1 to 1-2-100, and compounds 1-3-1 to 1-3-110; the specific structures of compounds 1-1-1 to 1-1-104, 1-2-1 to 1-2-100, and 1-3-1 to 1-3-110 are given in claim 12.

[0210] According to one embodiment of the present invention, the hydrogen in compounds 1-1-1 to 1-1-104, 1-2-1 to 1-2-100 and 1-3-1 to 1-3-100 can be partially or completely replaced by deuterium.

[0211] According to one embodiment of the present invention, in the electroluminescent device, the light-emitting layer further includes a second host material.

[0212] According to one embodiment of the present invention, the second host material has a structure represented by the formula NH-1:

[0213] ;

[0214] Among them, L 11 To L 13 Each time it appears, it is selected from single bonds, substituted or unsubstituted alkylene groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkylene groups having 3-20 carbon atoms, substituted or unsubstituted arylene groups having 6-30 carbon atoms, substituted or unsubstituted heteroarylene groups having 3-30 carbon atoms, or combinations thereof.

[0215] Ar 11 To Ar 13 Each time it appears, it is selected from substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, or combinations thereof, either identically or differently.

[0216] According to one embodiment of the present invention, the second host material has a structure represented by formula NH-1-1 or formula NH-1-2:

[0217] , ;

[0218] In formula NH-1-1, V1 to V5 are selected from C, N, or CR each time they appear, either identically or differently. v V 11 To V 15 Each occurrence is either identically or differently selected from N or CR v1 And one of V1 to V5 is C and is associated with L. 13 Connected;

[0219] In formula NH-1-2, V1 to V4 are selected from C, N, or CR each time they appear, either identically or differently. v V 11 To V 14 Each occurrence is either identically or differently selected from N or CR v1 And one of V1 to V4 is C and is associated with L. 13Connected;

[0220] V is selected from O, S, or Se;

[0221] L 11 To L 13 Each time it appears, it is selected from single bonds, substituted or unsubstituted alkylene groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkylene groups having 3-20 carbon atoms, substituted or unsubstituted arylene groups having 6-30 carbon atoms, substituted or unsubstituted heteroarylene groups having 3-30 carbon atoms, or combinations thereof.

[0222] Ar 11 and Ar 12 Each time it appears, it is selected from substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, or combinations thereof, either identically or differently.

[0223] R v R v1 Each time it appears, it is selected from the group consisting of the same or different groups of the following: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 ring carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 ring atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, and substituted or unsubstituted alkenes having 2-20 carbon atoms. alkyl, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, and combinations thereof having 0-20 carbon atoms;

[0224] Adjacent substituent R v R v1 They can be arbitrarily connected to form a ring.

[0225] In this paper, adjacent substituents R v R v1 They can be optionally linked to form a ring, intended to represent adjacent substituent groups, for example, adjacent substituent R. v Between, adjacent substituents R v1 Between, and adjacent substituents Rv and R v1 Between these substituents, any one or more of these substituent groups can connect to form a ring. Obviously, these substituents can also not connect to form a ring.

[0226] According to one embodiment of the present invention, wherein the Ar 11 and Ar 12 At least one of them is a two- or three-fused-ring structure.

[0227] According to one embodiment of the present invention, wherein the Ar 11 and Ar 12 Each time it appears, it is selected from the same or different groups of substituted or unsubstituted phenyl, substituted or unsubstituted biphenyl, substituted or unsubstituted terphenyl, substituted or unsubstituted naphthyl, substituted or unsubstituted phenanthyl, substituted or unsubstituted triphenylene, substituted or unsubstituted alkyl, substituted or unsubstituted fluorenyl, substituted or unsubstituted carbazolyl, substituted or unsubstituted dibenzofuranyl, substituted or unsubstituted dibenzothiophenyl, substituted or unsubstituted pyridyl, substituted or unsubstituted pyrimidinyl, substituted or unsubstituted quinolinyl, substituted or unsubstituted indolocarbazolyl, or combinations thereof.

[0228] According to one embodiment of the present invention, L 11 To L 13 Each time it appears, it is selected from single bonds, substituted or unsubstituted phenylene, substituted or unsubstituted naphthylene, substituted or unsubstituted biphenylene, or combinations thereof, either identically or differently.

[0229] According to one embodiment of the present invention, the second host material is selected from the group consisting of compounds B-1 to B-243; the specific structures of compounds B-1 to B-243 are given in claim 13.

[0230] According to one embodiment of the present invention, the hydrogen in compounds B-1 to B-243 can be partially or completely replaced by deuterium.

[0231] According to one embodiment of the present invention, the light-emitting layer further comprises at least one metal complex.

[0232] According to one embodiment of the present invention, the metal complex is a phosphorus photosensitizer.

[0233] According to one embodiment of the present invention, the metal complex has M(L) a ) m (L b ) n (L c ) q The general formula;

[0234] M is selected from metals with a relative atomic mass greater than 40;

[0235] L a L b and L c These are the first, second, and third ligands that coordinate with M, respectively; L a L b and L c They can be selectively linked to form multidentate ligands;

[0236] L a L b and L c Same or different; m is 1, 2 or 3; n is 0, 1 or 2; q is 0, 1 or 2; the sum of m, n, and q equals the oxidation state of M; when m is greater than or equal to 2, multiple L a Same or different; when n is 2, the two L b Same or different; when q is 2, the two L c Same or different;

[0237] L a Each occurrence may be selected from the structure shown in Equation 2, either identically or differently:

[0238]

[0239] in,

[0240] Ring A 11 And Ring A 12 Selected from aromatic rings having 6-30 ring atoms, heteroaromatic rings having 5-30 ring atoms, or combinations thereof;

[0241] T1 and T2 are selected from C or N each time they appear, either in the same or different ways.

[0242] K1 and K2 are selected from single bonds, O, S, or NR each time they appear, either identically or differently. k ;

[0243] L 31 Each time it appears, select the group consisting of the following, either identically or differently: single key, BR L11 CR L11 R L11 NR L11 O, SiR L11 R L11 PR L11 S, GeR L11 R L11Se, substituted or unsubstituted vinylene, ethynylene, substituted or unsubstituted arylene with 6-30 carbon atoms, substituted or unsubstituted heteroarylene with 3-30 carbon atoms, and combinations thereof; when two R are present simultaneously L11 At that time, two R L11 Same or different;

[0244] a1 is selected from 0 or 1;

[0245] R 11 and R 12 Each occurrence, whether identical or different, indicates monosubstitution, polysubstitution, or no substitution;

[0246] R 11 R 12 and R k Each time it appears, it is selected from the group consisting of the same or different groups of the following: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic carbon atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, and substituted or unsubstituted alkyl groups having 1-20 carbon atoms. Alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, and combinations thereof having 0-20 carbon atoms;

[0247] Adjacent substituent R 11 and R 12 They can be arbitrarily connected to form a loop;

[0248] L b and L c Each occurrence may be selected from any of the following structures, either identically or differently:

[0249] , , , , , , ,

[0250] , , , , ,

[0251] in,

[0252] R a R b and R c Each occurrence, whether identical or different, indicates monosubstitution, polysubstitution, or no substitution;

[0253] X b Each time it appears, choose from the following groups, either the same or different: O, S, Se, NR N1 and CR C1 R C2 ;

[0254] X c and X d Each time it appears, choose from the following groups, either the same or different: O, S, Se, and NR. N2 ;

[0255] R a R b R c R N1 R N2 R C1 and R C2 Each time it appears, it is selected from the group consisting of the same or different groups of the following: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic carbon atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, and substituted or unsubstituted alkyl groups having 1-20 carbon atoms. Alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, and combinations thereof having 0-20 carbon atoms;

[0256] Adjacent substituent R a R b R c R N1 R N2 R C1 and R C2 They can be arbitrarily connected to form a ring.

[0257] In this paper, adjacent substituents R a R b R c R N1 R N2 R C1 and R C2 They can be optionally linked to form a ring, intended to represent adjacent substituent groups, for example, two substituents R a Between the two substituents R b Between the two substituents R c Between, substituent R a and R b Between, substituent R a and R c Between, substituent R b and R c Between, substituent R a and R N1 Between, substituent R b and R N1 Between, substituent R a and R C1 Between, substituent R a and R C2 Between, substituent R b and R C1 Between, substituent R b and R C2 Between, substituent R a and R N2 Between, substituent R b and R N2 Between, and R C1 and R C2 Between these substituent groups, one or more of them can be linked to form a ring. For example, adjacent substituents R a R b It can be optionally connected to form a ring, which can form one or more of the following structures, including but not limited to: , , , , , , , , , , , , or Where W is selected from O, S, Se, NR w1 or CR w1 R w1 ; wherein R w1 R a ', R b The definition of ' and the aforementioned R a The same. Obviously, these substituents can also not be connected to form a ring.

[0258] According to one embodiment of the present invention, wherein the ligand L a Each occurrence may be selected from the structure shown in Equation 3, either identically or differently:

[0259]

[0260] in,

[0261] Ring D is selected from a 5-membered heteroaryl ring or a 6-membered heteroaryl ring;

[0262] Ring E is selected from a 5-membered unsaturated carbon ring, a benzene ring, a 5-membered heteroaromatic ring, or a 6-membered heteroaromatic ring;

[0263] Rings D and E via U a and U b Condensation;

[0264] U a and U b Each occurrence is either identical or different and is selected from C or N;

[0265] R d and R e Each occurrence, whether identical or different, indicates monosubstitution, polysubstitution, or no substitution;

[0266] V 31 To V 34 Each time it appears, it is selected from CR in the same or different ways. v3 Or N;

[0267] R d R e and R v3Each time it appears, it is selected from the group consisting of, either identically or differently, hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 ring carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 ring atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, and substituted or unsubstituted alkenes having 2-20 carbon atoms. alkyl, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, and combinations thereof having 0-20 carbon atoms;

[0268] Adjacent substituent R d R e and R v3 They can be arbitrarily connected to form a ring.

[0269] In this paper, adjacent substituents R d R e R v3 The ability to optionally connect to form a ring is intended to indicate the presence of a substituent R. d Substituent R e Substituent R v3 When, adjacent substituent groups, such as adjacent substituent R d Substituents R between and adjacent e Substituents R between and adjacent v3 Substituents R between and adjacent d With R e Substituents R between and adjacent d With R v3 Between and adjacent substituents R e With R v3 Between these adjacent substituent groups, any one or more can connect to form a ring. It is obvious that when substituent R is present... d , substituent R e , substituent R v3 At the same time, these substituent groups may not be connected to form a ring.

[0270] According to one embodiment of the present invention, in Formula 3, two adjacent substituents Re The connection forms a loop.

[0271] According to one embodiment of the present invention, in Formula 3, two adjacent substituents R e They can be linked to form 5-membered unsaturated carbon rings, 5-membered heteroaromatic rings, or benzene rings.

[0272] According to one embodiment of the present invention, in Formula 3, ring D is a 6-membered heteroaromatic ring, and ring E is a benzene ring or a 6-membered heteroaromatic ring.

[0273] According to one embodiment of the present invention, in Formula 3, ring D is a 6-membered heteroaromatic ring, and ring E is a 5-membered heteroaromatic ring or a 5-membered unsaturated carbon ring.

[0274] According to one embodiment of the present invention, in Formula 3, ring D is a 6-membered heteroaromatic ring, ring E is a benzene ring or a 6-membered heteroaromatic ring, and the two adjacent substituents R e They can be linked to form benzene rings or 6-membered heteroaromatic rings.

[0275] According to one embodiment of the present invention, in Formula 3, ring D is a 6-membered heteroaromatic ring, ring E is a 5-membered heteroaromatic ring or a 5-membered unsaturated carbide ring, and the two adjacent substituents R e They can be linked to form benzene rings or 6-membered heteroaromatic rings.

[0276] According to one embodiment of the present invention, in formula 3, R d R e R v3 At least one or two sets of adjacent substituents are linked to form a ring. For example, two substituents R d The connection forms a ring, or two substituents R e The connection forms a ring, or two substituents R v3 Linkage to form a ring, or substituent R d With substituent R e The links between them form a ring, or the substituent R d With substituent R v3 The links between them form a ring, or the substituent R e With substituent R v3 The two substituents R are connected to form a ring or a ring. d The two substituents R connect to form a ring. e The connection forms a ring, or two substituents R d The two substituents R connect to form a ring. v3 The connection forms a ring, or two substituents R e The two substituents R connect to form a ring. v3 Linkage forms a ring, substituent R e With substituent R v3 The two substituents R are linked to form a ring. v3Linkage to form a ring, or substituent R d With substituent R v3 The two substituents R are linked to form a ring. v3 The connection forms a loop; R d R e R v3 A similar situation occurs when more adjacent substituents are linked to form a ring.

[0277] According to an embodiment of the present invention, in the organic electroluminescent device, the metal complex has M(L) a ) m (L b ) n The general formula;

[0278] Metal M is selected from metals with a relative atomic mass greater than 40;

[0279] L a L b The first and second ligands, respectively, coordinate with the metal M; L a L b They can be selectively linked to form multidentate ligands;

[0280] m is 1, 2, or 3; n is 0, 1, or 2; the sum of m and n equals the oxidation state of the metal M; when m is greater than or equal to 2, multiple L a They can be the same or different; when n is 2, the two Ls b They can be the same or different;

[0281] L a Each occurrence may be selected from the structure shown in Equation 3, either identically or differently:

[0282]

[0283] in,

[0284] Ring D is selected from a 5-membered heteroaryl ring or a 6-membered heteroaryl ring;

[0285] Ring E is selected from a 5-membered unsaturated carbon ring, a benzene ring, a 5-membered heteroaromatic ring, or a 6-membered heteroaromatic ring;

[0286] Rings D and E via U a and U b Condensation;

[0287] U a and U b Each occurrence is either identical or different and is selected from C or N;

[0288] R d and R e Each occurrence, whether identical or different, indicates monosubstitution, polysubstitution, or no substitution;

[0289] V 31 To V 34 Each time it appears, it is selected from CR in the same or different ways. v3 Or N;

[0290] R d R e and R v3 Each time it appears, it is selected from the group consisting of, either identically or differently, hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 ring carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 ring atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, and substituted or unsubstituted alkenes having 2-20 carbon atoms. alkyl, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, and combinations thereof having 0-20 carbon atoms;

[0291] Adjacent substituent R d R e and R v3 They can be arbitrarily connected to form a loop;

[0292] The ligand L b Each occurrence is selected from the following structure, either identically or differently:

[0293]

[0294] Among them, R Ⅰ To R ⅦEach is independently selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic carbon atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, and substituted or unsubstituted alkenyl groups having 2-20 carbon atoms. -20 carbon atoms of alkynyl, substituted or unsubstituted aryl with 6-30 carbon atoms, substituted or unsubstituted heteroaryl with 3-30 carbon atoms, substituted or unsubstituted alkoxyl with 3-20 carbon atoms, substituted or unsubstituted arylsilyl with 6-20 carbon atoms, substituted or unsubstituted alkylgermanium with 3-20 carbon atoms, substituted or unsubstituted arylgermanium with 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, thio, sulfinyl, sulfonyl, phosphine, and combinations thereof with 0-20 carbon atoms.

[0295] According to one embodiment of the present invention, R Ⅰ To R Ⅲ At least one of them is selected from substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, or combinations thereof; and / or R Ⅳ To R Ⅵ At least one of them is selected from substituted or unsubstituted alkyl groups having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3 to 20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1 to 20 carbon atoms, or combinations thereof.

[0296] According to one embodiment of the present invention, R Ⅰ To R Ⅲ At least two of them, each time appearing identically or differently, are selected from substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, or combinations thereof; and / or R Ⅳ To R Ⅵ At least two of them, each time appearing identically or differently, are selected from substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, or combinations thereof.

[0297] According to one embodiment of the present invention, RⅠ To R Ⅲ At least two of them, each time appearing identically or differently, are selected from substituted or unsubstituted alkyl groups having 2-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 ring carbon atoms, substituted or unsubstituted heteroalkyl groups having 2-20 carbon atoms, or combinations thereof; and / or R Ⅳ To R Ⅵ At least two of them, each time appearing identically or differently, are selected from substituted or unsubstituted alkyl groups having 2 to 20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3 to 20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 2 to 20 carbon atoms, or combinations thereof.

[0298] According to one embodiment of the present invention, wherein L a It has the structure shown in Formula 3 and contains at least one structural unit selected from the group consisting of a 6-membered 6-membered aromatic ring, a 6-membered 6-membered heteroaromatic ring, a 6-membered 5-membered aromatic ring and a 6-membered 5-membered heteroaromatic ring.

[0299] According to an embodiment of the present invention, in the organic electroluminescent device, wherein L a It has the structure shown in Formula 3 and contains at least one structural unit selected from the group consisting of naphthalene, phenanthrene, quinoline, isoquinoline and azaphenanthrene.

[0300] According to one embodiment of the present invention, in the organic electroluminescent device, the metal complex is an Ir complex, a Pt complex, or an Os complex.

[0301] According to one embodiment of the present invention, in the organic electroluminescent device, the metal complex is an Ir complex and has Ir(L) a (L) b (L) c ), Ir(L a )2(L b ), Ir(L a (L) b )2、Ir(L a )2(L c ) or Ir(L a (L) c Any of the structures shown in )2.

[0302] According to one embodiment of the present invention, the metal complex has M(L) a ) m (L b ) 3-m The general formula structure has a structure represented by the formula Ma:

[0303]

[0304] in,

[0305] m is selected from 1, 2, or 3; when m is selected from 1, the two L b Same or different; when m is selected from 2 or 3, multiple L a Same or different;

[0306] Ring A 11 And Ring A 12 Selected from aromatic rings having 6-24 ring atoms, heteroaromatic rings having 5-24 ring atoms, or combinations thereof;

[0307] U1-U8 are selected from CR each time they appear, either identically or differently. u1 Or N;

[0308] R 11 and R 12 Each occurrence, whether identical or different, indicates monosubstitution, polysubstitution, or no substitution;

[0309] R 11 R 12 and R u1 Each time it appears, it is selected from the group consisting of the same or different groups of the following: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic carbon atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, and substituted or unsubstituted alkyl groups having 1-20 carbon atoms. Alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, and combinations thereof having 0-20 carbon atoms;

[0310] Adjacent substituent R 11 R 12 and R u1 They can be arbitrarily connected to form a ring.

[0311] In this paper, "adjacent substituent R" 11 R 12 and Ru1 "Can be optionally linked to form a ring" is intended to indicate that adjacent substituent groups therein, for example, two substituents R 11 Between the two substituents R 12 Between the two substituents R u1 Between, and the two substituents R 11 and R 12 Between these substituents, any one or more of these substituent groups can connect to form a ring. Obviously, these substituents can also not connect to form a ring.

[0312] According to one embodiment of the present invention, ring A 11 Each occurrence may be selected from any of the following structures, either identically or differently:

[0313] , , , , , , , , , , , , , ;

[0314] in,

[0315] R 11 Each occurrence of the same or different R indicates monosubstituted, polysubstituted, or unsubstituted; when multiple Rs exist in any structure 11 At that time, the R 11 Same or different;

[0316] R 11Each time it appears, it is selected from the group consisting of the same or different groups of the following: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic carbon atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, and substituted or unsubstituted alkyl groups having 1-20 carbon atoms. Alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, and combinations thereof having 0-20 carbon atoms;

[0317] Adjacent substituent R 11 They can be arbitrarily connected to form a loop;

[0318] Where "#" indicates the position connected to the metal Ir, "Indicates the relationship with ring A" 12 The location of the connection.

[0319] In this paper, "adjacent substituent R" 11 "Can be optionally connected to form a ring" is intended to represent two adjacent substituents R 11 They can connect to form a ring; obviously, two adjacent substituents R 11 Alternatively, they can be left unconnected to form a loop.

[0320] According to one embodiment of the present invention, wherein the ring A 11 Selected from , , or .

[0321] According to one embodiment of the present invention, wherein the ring A 11 Selected from or .

[0322] According to one embodiment of the present invention, wherein the ring A 12 Each occurrence may be selected from any of the following structures, either identically or differently:

[0323] , , , , , , , , , , , , , , , , , , , ;

[0324] in,

[0325] Each time Z appears, it is selected from the following groups, either identically or differently: O, S, Se, NR. z CR z R z SiR z R z and GeR z R z ;

[0326] R 12 Each occurrence of the same or different R indicates monosubstituted, polysubstituted, or unsubstituted; when multiple Rs exist in any structure 12 At that time, the R 12 Same or different;

[0327] R z and R 12Each time it appears, it is selected from the group consisting of the same or different groups of the following: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic carbon atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, and substituted or unsubstituted alkyl groups having 1-20 carbon atoms. Alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, and combinations thereof having 0-20 carbon atoms;

[0328] Adjacent substituent R z and R 12 They can be arbitrarily connected to form a loop;

[0329] Where "#" indicates the position connected to the metal Ir, "Indicates the relationship with ring A" 11 The location of the connection.

[0330] In this paper, "adjacent substituent R" z and R 12 "Can be optionally connected to form a ring" is intended to represent two adjacent substituents R z They can connect to form a ring, with two adjacent substituents R 12 They can connect to form a ring; obviously, two adjacent substituents R z They can also not be connected to form a ring, and two adjacent substituents R 12 Alternatively, they can be left unconnected to form a loop.

[0331] According to one embodiment of the present invention, wherein the ring A 12 Selected from , or .

[0332] According to one embodiment of the present invention, the metal complex has Ir(L) a ) m (L b )3-m The general formula structure, and the structure represented by the formula Ma-0:

[0333]

[0334] in,

[0335] m is selected from 1, 2, or 3; when m is selected from 1, the two L b They are the same or different; when m is selected from 2 or 3, there are 2 or 3 L. a Are they the same or different?

[0336] Q' can choose freely from O, S, Se, NR. Q CR Q R Q SiR Q R Q and GeR Q R Q A group consisting of multiple R groups; when there are multiple R groups Q At that time, multiple R Q Same or different;

[0337] U 15 toU 20 Each time it appears, it is selected from CR in the same or different ways. n1 Or N;

[0338] U9 to U 12 Each time it appears, it is selected from CR in the same or different ways. n2 Or N;

[0339] R n Each occurrence, whether identical or different, indicates monosubstitution, polysubstitution, or no substitution;

[0340] R n1 R n2 R Q R nEach time it appears, it is selected from the group consisting of the same or different groups of the following: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic carbon atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, and substituted or unsubstituted alkyl groups having 1-20 carbon atoms. Alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, and combinations thereof having 0-20 carbon atoms;

[0341] Adjacent substituent R n1 R n2 R Q R n They can be arbitrarily connected to form a ring.

[0342] According to one embodiment of the present invention, Q' is selected from O, S, Se, NR. Q or CR Q R Q .

[0343] According to one embodiment of the present invention, Q' is selected from O or S.

[0344] According to one embodiment of the present invention, wherein U9 to U 12 Each time it appears, it is selected from CR in the same or different ways. n2 U 15 toU 19 Each time it appears, it is selected from CR in the same or different ways. n1 U 20 Selected from CR n1 Or N; the R n1 R n2Each time it appears, it is selected from the group consisting of the same or different groups of the following: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted amino, cyano, hydroxyl, mercapto groups having 0-20 carbon atoms, and combinations thereof.

[0345] According to one embodiment of the present invention, U 15 toU 20 At least two of them are selected from CR n1 And one of the Rs n1 It is cyano or fluorine; another of the R... n1 Choose from the group consisting of: deuterium, halogens, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, and substituted or unsubstituted alkenyl groups having 2-20 carbon atoms. Alkyne group, substituted or unsubstituted aryl group having 6-30 carbon atoms, substituted or unsubstituted heteroaryl group having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl group having 3-20 carbon atoms, substituted or unsubstituted arylsilyl group having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium group having 3-20 carbon atoms, substituted or unsubstituted arylgermanium group having 6-20 carbon atoms, substituted or unsubstituted amino group, acyl group, carbonyl group, carboxylic acid group, ester group, cyano group, isocyano group, hydroxyl group, mercapto group, sulfinyl group, sulfonyl group, phosphin group, and combinations thereof having 0-20 carbon atoms.

[0346] According to one embodiment of the present invention, U 15 toU 20 At least two of them are selected from CR n1 And one of the Rs n1 It is cyano or fluorine; another of the R... n1 Choose from the group consisting of: deuterium, substituted or unsubstituted alkyl groups having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3 to 20 cyclic carbon atoms, substituted or unsubstituted aryl groups having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3 to 30 carbon atoms, and combinations thereof.

[0347] According to one embodiment of the present invention, U 19 Selected from CR n1 And the R n1 It is either cyano or fluorine, U 20 Selected from CR n1 And the R n1 It is selected from deuterium, substituted or unsubstituted aryl groups having 6-18 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-18 carbon atoms, or combinations thereof.

[0348] According to one embodiment of the present invention, R n Each time it appears, it is selected from the group consisting of the same or different groups of the following: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, cyano groups, and combinations thereof.

[0349] According to one embodiment of the present invention, R n Each time it appears, it is selected from the group consisting of the same or different groups of the following: hydrogen, deuterium, fluorine, substituted or unsubstituted alkyl groups having 1 to 6 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3 to 6 cyclic carbon atoms, substituted or unsubstituted aryl groups having 6 to 12 carbon atoms, substituted or unsubstituted heteroaryl groups having 3 to 12 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3 to 12 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3 to 12 carbon atoms, and combinations thereof.

[0350] According to one embodiment of the present invention, the metal complex is selected from the group consisting of compounds RD1 to RD214 and compounds GD1 to GD185, and the specific structures of compounds RD1 to RD214 and compounds GD1 to GD185 are given in claim 14.

[0351] According to one embodiment of the present invention, the hydrogen in compounds RD1 to RD214 and compounds GD1 to GD185 can be partially or completely replaced by deuterium.

[0352] According to one embodiment of the present invention, the maximum emission wavelength λ of the photoluminescence spectrum of the compound is... max-PL-1 The range is 550 nm to 800 nm.

[0353] According to one embodiment of the present invention, the maximum emission wavelength λ of the photoluminescence spectrum of the compound is... max-PL-1The wavelength range is 580 nm to 700 nm.

[0354] According to one embodiment of the present invention, the maximum emission wavelength λ of the photoluminescence spectrum of the compound is... max-PL-1 The wavelength range is 580 nm to 680 nm.

[0355] According to one embodiment of the present invention, the maximum emission wavelength λ of the photoluminescence spectrum of the compound is... max-PL-1 The wavelength range is 580 nm to 650 nm.

[0356] According to one embodiment of the present invention, the maximum emission wavelength λ in the photoluminescence spectrum of the metal complex is... max-PL-2 The wavelength range is 610 nm to 650 nm.

[0357] According to one embodiment of the present invention, the full width at half maximum (FWHM) of the photoluminescence spectrum of the metal complex is... PL-2 Less than or equal to 50 nm.

[0358] According to one embodiment of the present invention, the full width at half maximum (FWHM) of the photoluminescence spectrum of the metal complex is... PL-2 Less than or equal to 45 nm.

[0359] According to one embodiment of the present invention, the full width at half maximum (FWHM) of the photoluminescence spectrum of the metal complex is... PL-2 Less than or equal to 40 nm.

[0360] According to one embodiment of the present invention, the full width at half maximum (FWHM) of the photoluminescence spectrum of the metal complex is... PL-2 Less than or equal to 35 nm.

[0361] According to one embodiment of the present invention, the full width at half maximum (FWHM) of the photoluminescence spectrum of the metal complex is... PL-2 Less than or equal to 30 nm.

[0362] According to another embodiment of the present invention, a compound composition comprising the compounds described in any of the foregoing embodiments is also disclosed.

[0363] Combination with other materials

[0364] The materials described in this invention for specific layers in organic light-emitting devices can be used in combination with a variety of other materials present in the device. These combinations of materials are described in detail in paragraphs 0132-0161 of U.S. Patent Application US2016 / 0359122A1, the entire contents of which are incorporated herein by reference. The materials described or mentioned herein are non-limiting examples of materials that can be used in combination with the compounds disclosed herein, and those skilled in the art can readily consult the literature to identify other materials that can be used in combination.

[0365] Materials described herein for use in specific layers of organic light-emitting devices can be used in combination with a variety of other materials present in said devices. For example, the compounds disclosed herein can be used in combination with a variety of light-emitting dopants, substrates, transport layers, blocking layers, implantation layers, electrodes, and other possible layers. These combinations of materials are described in detail in paragraphs 0080-0101 of U.S. Patent Application US2015 / 0349273A1, the entire contents of which are incorporated herein by reference. The materials described or mentioned herein are non-limiting examples of materials that can be used in combination with the compounds disclosed herein, and those skilled in the art can readily consult the literature to identify other materials that can be used in combination.

[0366] In the examples of material synthesis, unless otherwise stated, all reactions were carried out under nitrogen protection. All reaction solvents were anhydrous and used as is from commercial sources. The synthesized products were structurally confirmed and characterized using one or more instruments conventional in the art (including but not limited to Bruker's nuclear magnetic resonance spectrometer, Shimadzu's liquid chromatograph, liquid chromatography-mass spectrometry, gas chromatography-mass spectrometry, differential scanning calorimeter, Shanghai Lingguang Technology's fluorescence spectrophotometer, Wuhan Kesite's electrochemical workstation, Anhui Beiyike's sublimation apparatus, etc.) in methods well known to those skilled in the art. In the examples of devices, the characteristics of the devices were also tested using equipment conventional in the art (including but not limited to evaporation machines manufactured by Angstrom Engineering, optical testing systems and lifetime testing systems manufactured by Suzhou Fushida, ellipsometers manufactured by Beijing Liangtuo, etc.) in methods well known to those skilled in the art. Since those skilled in the art are familiar with the use of the above-mentioned equipment, testing methods, and other related content, and can obtain the inherent data of the samples definitively and unaffected, the above-mentioned related content will not be elaborated further in this patent.

[0367] Material synthesis examples:

[0368] The preparation methods of the compounds of this invention are not limited. Typical but not limited examples are the following compounds, whose synthetic routes and preparation methods are as follows:

[0369] Synthesis Example 1: Synthesis of Compound BN-1-1-93

[0370] Step 1: Synthesize intermediate 2

[0371]

[0372] Intermediate 1 (34 g, 100 mmol) was mixed with acetic anhydride (51 g, 500 mmol), stirred overnight at room temperature, filtered, the filter cake was washed with MTBE (methyl tert-butyl ether), and dried to give intermediate 2 (34.4 g, 90 mmol).

[0373] Step 2: Synthesize intermediate 3

[0374]

[0375] Intermediate 2 (23.7 g, 62 mmol), NaI (27.9 g, 186 mmol), CuI (1.18 g, 6.2 mmol) and trans-(1R,2R)-N,N'-dimethyl-1,2-cyclohexanediamine (1.76 g, 12.4 mmol) were mixed in 1,4-dioxane (300 mL), purged with nitrogen, and reacted overnight at 110 °C. After cooling, the mixture was diluted with dichloromethane, filtered through diatomaceous earth, concentrated, and purified by column chromatography to obtain intermediate 3 (29.33 g, 61.5 mmol).

[0376] Step 3: Synthesize intermediate 5

[0377]

[0378] Intermediate 3 (29.33 g, 61.5 mmol), intermediate 4 (41.3 g, 147.6 mmol), copper powder (23.6 g, 369 mmol) and potassium carbonate (51 g, 369 mmol) were mixed in 1,2-dichlorobenzene (160 mL), purged with nitrogen, and reacted overnight at 170 °C. After the reaction was complete, the mixture was cooled, filtered, concentrated under reduced pressure to remove the solvent, and pulped in PE before filtration to obtain intermediate 5 (43 g, 56.3 mmol).

[0379] Step 4: Synthesize intermediate 6

[0380]

[0381] Hydrochloric acid (52 mL) was added to an ethanol solution of intermediate 5 (60.5 g, 79.1 mmol), the mixture was refluxed, and the reaction was monitored by TLC until it was complete. The mixture was then cooled and filtered, the filter cake was washed with methyl tert-butyl ether, and dried to obtain intermediate 6 (51.5 g, 69.8 mmol).

[0382] Step 5: Synthesize intermediate 8

[0383]

[0384] Intermediate 6 (20.9 g, 28.4 mmol), intermediate 7 (10.54 g, 34 mmol), and cesium carbonate (19.16 g, 58.8 mmol) were mixed in DMF, purged with nitrogen, and reacted at 150 °C. After the reaction was monitored by TLC until complete, the mixture was cooled, water was added, and the mixture was filtered. The crude product was dissolved in DCM, washed with saturated sodium chloride aqueous solution, concentrated under reduced pressure, pulped with PE, filtered, and dried to obtain intermediate 8 (23 g, 22.4 mmol).

[0385] Step 6: Synthesize compound BN-1-1-93

[0386]

[0387] Intermediate 8 (23 g, 22.4 mmol) and tert-butylbenzene (500 mL) were placed in a three-necked flask and cooled at -72 °C. After purging with nitrogen, n-butyllithium (35.84 mL, 89.6 mmol) was added dropwise, and the mixture was heated to 60 °C and reacted overnight. After the reaction was complete, boron tribromide (10.8 mL, 112 mmol) was added dropwise at -40 °C, and the mixture was heated to 80 °C and reacted overnight. At 0 °C, 1,2,2,6,6-pentamethylpiperidine (PMP, 34.8 g, 224 mmol) was added, and the mixture was heated to 180 °C and reacted for 2 days. The mixture was cooled and filtered, the filter cake was washed with toluene, and the filtrate was distilled under reduced pressure to obtain the crude product. The crude product was purified by column chromatography to give compound BN-1-1-93 (0.18 g, 0.2 mmol, yield 0.9%). The product was identified as the target product with a molecular weight of 885.5.

[0388] Those skilled in the art should understand that the above preparation method is merely an exemplary example, and they can obtain other compound structures of the present invention by improving it.

[0389] The compounds of this invention have a specific polycyclic structure design that allows for different degrees of regulation of the emission color, enabling the desired emission of orange to red light. To further verify the emission effect, the maximum emission wavelength and energy level of some compounds of this invention were calculated using DFT calculations.

[0390] The DFT calculation method used in this invention:

[0391] Using the B3LYP hybrid functional and CEP-31G effective nuclear potential basis set within the Gaussian software package, and simulating the THF solvent environment with the SMD solvation model, DFT calculations were performed on the compounds of this invention and comparative compounds. The HOMO values, LUMO values, and singlet level (S1) of the compounds were obtained, and the results were calculated according to equation λ. max (nm) = 1240 / S1, which is used to calculate the maximum emission wavelength λ of the compound. max (nm), the data is recorded and displayed in Table 1:

[0392] Table 1 Calculation Data

[0393] compound HOMO (eV) LUMO (eV) S1 (eV) <![CDATA[λ max (nm)]]> Compound BN-1-1-93 -4.94 -2.33 1.91 650.3 Compound BN-1-1-246 -5.17 -2.34 1.93 640.9 Compound BN-1-1-76 -4.88 -2.28 1.88 659.9 Compound BN-1-1-153 -4.88 -2.27 1.91 650.6 Compound 3-5-59 -5.10 -2.40 2.12 584.3 Compound 3-5-60 -5.07 -2.37 2.06 602.2 Compound 3-5-33 -5.02 -2.23 2.02 613.2 Compound 3-5-38 -4.88 -2.32 1.92 646.2 Compound A -5.08 -2.09 2.29 541.4

[0394] The structures of the relevant compounds are as follows:

[0395] , , , , , , , , .

[0396] discuss:

[0397] The main difference between compounds BN-1-1-93, BN-1-1-246, BN-1-1-76, BN-1-1-153, 3-5-59, and 3-5-60 of this invention and comparative compound A is that the ring Cy1 and ring Cy7 of the compounds of this invention are linked by specific Y groups (O, S, or C=CR). g R gThe rings are connected, while the Cy1 and Cy7 rings of the comparative compound A are not connected. As shown in Table 1, compared to the comparative compound A, the maximum emission wavelengths of compounds BN-1-1-93, BN-1-1-246, BN-1-1-76, BN-1-1-153, 3-5-59, and 3-5-60 of this invention all exhibit unexpectedly large redshifts, by 108.9 nm, 99.5 nm, 118.5 nm, 109.2 nm, 42.9 nm, and 60.8 nm, respectively. nm; The main difference between compounds 3-5-33 and 3-5-38 of this invention and comparative compound A is that the Cy1 and / or Cy7 rings in the compounds of this invention are fused aromatic rings, while the corresponding Cy1 and Cy7 rings in comparative compound A are monocyclic. As shown in Table 1, compared with comparative compound A, the maximum emission wavelengths of compounds 3-5-33 and 3-5-38 of this invention exhibit an unexpectedly large red shift, by 71.8 nm and 104.8 nm, respectively. It is evident that the compounds of this invention, due to their specific Y groups or specific fused rings, can effectively regulate the emission wavelength, resulting in an unexpectedly large red shift and adjusting the emission color to the desired orange to red band. Furthermore, the compounds of this invention have different degrees of regulatory effect on the maximum emission wavelength, enabling very convenient fine-tuning of different wavelengths or colors, greatly enriching the luminescent material system and emission color range.

[0398] In addition, the compounds of the present invention have deep HOMO and LUMO energy levels and strong hole or electron trapping capabilities, which makes the compounds of the present invention have the potential to achieve high device efficiency as luminescent materials.

[0399] In this invention, the maximum emission wavelength λ of the photoluminescence spectrum max-PL and half-height full-width FWHM- PL The testing method is as follows:

[0400] The photoluminescence (PL) spectra of the test compounds were determined using a Prism F98 fluorescence spectrophotometer manufactured by Shanghai Prism Technology Co., Ltd. The test compounds were dissolved in toluene to prepare 1×10⁻⁶ ppm solutions. -6 A solution with a concentration of mol / L was placed in a quartz sample tube and excited with light at a wavelength of 500 nm at room temperature (298 K) to measure its emission spectrum. The emission spectrum has a maximum emission wavelength λ. max-PL and half-height full-width FWHM- PL (Also known as half-peak width or half-peak height, it is the width of the peak at half its height. It is the distance between two points where the straight line drawn through the midpoint of the peak height intersects the two sides of the peak.)

[0401] As an example, the maximum emission wavelength λ of the photoluminescence spectrum of the following compounds was determined using the method described above. max-PL Full width at half maximum (FWHM) in photoluminescence spectrum PL The data is recorded and displayed in Table 2:

[0402] Table 2. Photoluminescence spectral data of the compounds

[0403] compound <![CDATA[λ max-PL (nm)]]> <![CDATA[FWHM- PL (nm)]]> BN-1-1-93 638 41 RD117 617 29

[0404] As shown in Table 1, the calculated S1 of compound BN-1-1-93 of this invention is 1.91 eV. Based on the data in Table 2, according to the formula S1(eV) = 1240 / λ... max The measured S1 value of the compound BN-1-1-93 of this invention is 1.94 eV. The difference between the calculated data and the measured data is only 0.03 eV, indicating that the calculated data can reflect the S1 energy level and luminescence properties of the compound quite accurately.

[0405] Device Examples

[0406] The fabrication method of organic electroluminescent devices is not limited. The fabrication method in the following embodiments is merely an example and should not be construed as limiting. Those skilled in the art can reasonably improve the fabrication method of the following embodiments based on existing technology. In the device embodiments, the device characteristics are tested using conventional equipment in the art (including but not limited to evaporation machines manufactured by Angstrom Engineering, optical testing systems and lifetime testing systems manufactured by Suzhou Fushida, ellipsometers manufactured by Beijing Liangtuo, etc.) using methods well known to those skilled in the art. Since those skilled in the art are familiar with the use of the above-mentioned equipment, testing methods, and other related content, and can obtain the inherent data of the sample definitively and unaffected, the above-mentioned related content will not be elaborated further in this patent.

[0407] Device Example 1

[0408] First, the glass substrate, which has a 120 nm thick indium tin oxide (ITO) anode, is cleaned and then treated with oxygen plasma and UV ozone. After treatment, the substrate is dried in a glove box to remove moisture. The substrate is then mounted on a substrate holder and placed in a vacuum chamber. The organic layer specified below is applied at a vacuum degree of approximately 10... -8Under the condition of Turbo, ITO was sequentially deposited on the anode by thermal vacuum evaporation at a rate of 0.2-2 Å / s. Compound HI and compound HT were co-deposited as a hole injection layer (HIL, weight ratio 3:97) with a thickness of 100 Å. Compound HT was used as a hole transport layer (HTL) with a thickness of 400 Å. Compound EB was used as an electron blocking layer (EBL) with a thickness of 50 Å. Then, compound BN-1-1-93 of the present invention was co-deposited with the host compound RH as a light-emitting layer (EML, weight ratio 0.3:99.7) with a thickness of 400 Å. Compound HB was used as a hole blocking layer (HBL) with a thickness of 50 Å. On the HBL, compound ET and 8-hydroxyquinoline-lithium (Liq) were co-deposited as an electron transport layer (ETL, weight ratio 40:60) with a thickness of 350 Å. Finally, a 1 nm thick layer of Liq was deposited as an electron injection layer, and a 120 nm thick layer of Al was deposited as a cathode. The device was then transferred back to the glove box and sealed with a glass cover and desiccant to complete the device.

[0409] Device Example 2

[0410] The preparation method of device example 2 is the same as that of device example 1, except that compound RD117, compound BN-1-1-93 of the present invention, and host compound RH are co-deposited as the light-emitting layer (EML, weight ratio 12:0.3:87.7).

[0411] Table 3 Partial device structures of device embodiments

[0412] Device Number HIL HTL EBL EML HBL ETL Example 1 Compound HT: Compound HI (97:3) (100 Å) Compound HT (400 Å) Compound EB (50 Å) Compound RH: Compound BN-1-1-93(99.7:0.3)(400 Å) Compound HB (50 Å) Compound ET:Liq (40:60) (350 Å) Example 2 Compound HT: Compound HI (97:3) (100 Å) Compound HT (400 Å) Compound EB (50 Å) Compound RH: Compound RD117: Compound BN-1-1-93 (87.7:12:0.3) (400 Å) Compound HB (50 Å) Compound ET:Liq (40:60) (350 Å)

[0413] The structure of the materials used in the device is shown below:

[0414] , , , , , , , , .

[0415] Table 4 shows the results at 10 mA / cm². 2 CIE data and maximum emission wavelength (λ) of Device Example 1 and Device Example 2 measured under constant current. max ), driving voltage (Voltage), external quantum efficiency (EQE), and at 80 mA / cm 2 Device lifetime measured under constant current (LT98).

[0416] Table 4 Device Data

[0417] Device Number CIE (x, y) <![CDATA[λ max (nm)]]> Voltage (V) EQE (%) LT98 (h) Example 1 (0.695，0.300) 648 3.47 9.5 230 Example 2 (0.702，0.298) 649 3.04 17.0 185

[0418] discuss:

[0419] As shown in Table 4, Example 1, using the compound BN-1-1-93 of the present invention with a specific structure represented by Formula 1 as the luminescent material, achieved the desired red emission, meeting the requirements of the BT.2020 color gamut, and exhibited device performance characterized by low voltage, high efficiency, and long lifetime. This represents excellent device performance in red fluorescent devices. Example 2, using a phosphorescent sensitizer to sensitize the compound BN-1-1-93 of the present application, also achieved the desired red emission, meeting the requirements of the BT.2020 color gamut, and exhibited device performance characterized by low voltage, high efficiency, and long lifetime. This demonstrates that the compounds of the present invention can achieve the desired red emission in both pure fluorescent devices and sensitized devices, while possessing excellent overall device performance, showcasing their great potential in commercial applications.

[0420] In summary, the compounds of the present invention with the specific structure represented by Formula 1 can effectively control the maximum emission wavelength, achieving the desired orange to red light emission, greatly enriching the fluorescent luminescent material system and the emission color range. At the same time, they have excellent device performance with low voltage, high efficiency, and long lifetime, demonstrating the excellent performance and broad potential application prospects of the compounds of the present invention with the specific structure of Formula 1.

[0421] It should be understood that the various embodiments described herein are merely examples and are not intended to limit the scope of the invention. Therefore, as will be apparent to those skilled in the art, the claimed invention may include variations of the specific embodiments and preferred embodiments described herein. Many of the materials and structures described herein can be substituted with other materials and structures without departing from the spirit of the invention. It should be understood that various theories regarding why the invention works are not intended to be limiting.

Claims

1. A compound having a structure represented by Formula 1: in, Cy1, Cy3, Cy4, Cy5 and Cy7 are selected, in the same or different ways, from unsaturated carbon rings having 5-30 carbon atoms or unsaturated heterocycles having 3-30 carbon atoms each time they appear. Cy2 and Cy6 are selected, either identically or differently, from aromatic rings having 6-18 carbon atoms or heteroaromatic rings having 3-18 carbon atoms each time they appear; Z1, Z2, and Z4 are selected from B, N, P, P=O, P=S, As, As=O, As=S, SiR, or GeR each time they appear; Z3 is selected from B, P, P=O, P=S, As, As=O, As=S, SiR, or GeR each time it appears; L1, L2, L3, L4, L5, and L6 are selected from single bonds, O, S, Se, BR', NR', PR', P=OR', P=SR', AsR', As=OR', As=SR', CR'R', SiR'R', or GeR'R' each time they appear; when two R's exist simultaneously, the two R's are the same or different. a, b, c, d, e, and f are each independently selected from 0 or 1; g is selected from 0 or 1, and satisfies the following conditions: When g is 1, Y is selected from O, S, Se, and CR. g GeR g R g Or C=CR g R g When two R exist simultaneously g At that time, two R g Same or different; When g is 0, at least one of the ring Cy1 and the ring Cy7 is selected from a fused aromatic ring having 9-30 carbon atoms or a fused heteroaromatic ring having 8-30 carbon atoms. R1, R2, R3, R4, R5, R6, and R7, when they appear in the same or different ways, represent monosubstituted, polysubstituted, or unsubstituted substances. R, R', R g R1, R2, R3, R4, R5, R6, and R7, each time appearing, are selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 ring carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 ring atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, and substituted... Or unsubstituted alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, -BR''R'', and combinations thereof; The R'', each time appearing, is selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic carbon atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, substituted or unsubstituted... Alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, and combinations thereof having 0-20 carbon atoms; Adjacent substituents R', R g R'', R1, R2, R3, R4, R5, R6 and R7 can be optionally connected to form a ring.

2. The compound of claim 1, wherein, The rings Cy1, Cy3, Cy4, Cy5 and Cy7, when appearing in the same or different ways, are selected from five-membered unsaturated carbon rings, aromatic rings having 6-18 carbon atoms or heteroaromatic rings having 3-18 carbon atoms. Preferably, the rings Cy1, Cy3, Cy4, Cy5, and Cy7, when appearing in the same or different forms, are selected from benzene rings, pyridine rings, naphthyl rings, phenanthrene rings, anthracene rings, indene rings, fluorene rings, indole rings, carbazole rings, benzofuran rings, dibenzofuran rings, benzothiophene rings, dibenzothiophene rings, benzothiophene rings, dibenzothiophene rings, dibenzoselenene rings, cyclopentadiene rings, and furan rings. Thiophene ring, thiophene ring, or combinations thereof; Cy2 and Cy6, each time appearing, are selected from the same or different groups of benzene ring, pyridine ring, naphthyl ring, phenanthrene ring, anthracene ring, indene ring, fluorene ring, indole ring, carbazole ring, benzofuran ring, dibenzofuran ring, benzothiophene ring, dibenzothiophene ring, benzothiophene ring, dibenzothiophene ring, dibenzoselenene ring, furan ring, thiophene ring, thiophene ring, or combinations thereof.

3. The compound of claim 1, wherein, The compound has a structure represented by any one of Formulas 1-1 to 1-4: ， ， ， ； Wherein, X1 is selected from O, S, Se or NR each time it appears, either the same or different. x1 ; X2 is selected from CR each time it appears, either the same or different. x2 SiR x2 , N or P; Z1, Z2, and Z4 are selected from B, N, P, P=O, P=S, As, As=O, As=S, SiR, or GeR each time they appear; Z3 is selected from B, P, P=O, P=S, As, As=O, As=S, SiR, or GeR each time it appears; L1, L2, L3, L4, L5, and L6 are selected from single bonds, O, S, Se, BR', NR', PR', P=OR', P=SR', AsR', As=OR', As=SR', CR'R', SiR'R', or GeR'R' each time they appear; when two R's exist simultaneously, the two R's are the same or different. a, b, c, d, e, and f are each independently selected from 0 or 1; g is selected from 0 or 1, and satisfies the following conditions: When g is 1, Y is selected from O, S, Se, and GeR. g R g Or C=CR g R g When two R exist simultaneously g At that time, two R g Same or different; When g is 0, two adjacent substituents R1 and / or two adjacent substituents R7 connect to form a substituted or unsubstituted aromatic ring with 6-30 carbon atoms or a substituted or unsubstituted heteroaromatic ring with 3-30 carbon atoms. R1, R2, R3, R4, R5, R6, and R7, when they appear in the same or different ways, represent monosubstituted, polysubstituted, or unsubstituted substances. R x1 R x2 ,R,R',R g R1, R2, R3, R4, R5, R6, and R7, each time appearing, are selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 ring carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 ring atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, and substituted... Or unsubstituted alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, -BR''R'', and combinations thereof; The R'', each time appearing, is selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic carbon atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, substituted or unsubstituted... Alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, and combinations thereof having 0-20 carbon atoms; Adjacent substituent R x1 R x2 ,R',R g R'', R1, R2, R3, R4, R5, R6 and R7 can be optionally connected to form a loop; Preferably, the compound has a structure represented by Formula 1-1.

4. The compound according to claim 1 or 3, wherein, L1, L2, L3, L4, L5, and L6, each time appearing, are selected from the same or different groups of single bonds, O, S, Se, BR', NR', P=OR', CR'R', or SiR'R'; and R', each time appearing, is selected from the group consisting of: substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, and combinations thereof; Preferably, L1, L2, L3, L4, L5, and L6 are selected from single bonds, O, S, NR', or CR'R' each time they appear; and R' is selected from the group consisting of: substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, and combinations thereof. More preferably, L1, L2, L3, L4, L5 and L6 are selected from single bonds, O or S each time they appear.

5. The compound according to claim 1 or 3, wherein, a+b+c+d+e+f=0, 1 or 2; Preferably, a+b+d+e = 0, 1, or 2; More preferably, b+e = 0, 1, or 2.

6. The compound according to claim 1 or 3, wherein, Z1, Z2 and Z4 are selected from B, N, P, P=O or P=S each time they appear, and Z3 is selected from B, P, P=O or P=S each time it appears, and at least one of Z1, Z2 and Z4 is selected from B, P, P=O or P=S each time it appears. Preferably, Z1, Z2, and Z4 are selected from B, N, or P=O each time they appear, and Z3 is selected from B or P=O each time it appears, and at least two of Z1, Z2, Z3, and Z4 are selected from B or P=O each time they appear; More preferably, Z1 and Z4 are selected from N, and Z2 and Z3 are selected from B.

7. The compound according to claim 1 or 3, wherein, R g R1, R2, R3, R4, R5, R6, and R7, each time appearing, are selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 ring carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 ring atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted amino, cyano, isocyano groups having 0-20 carbon atoms, and combinations thereof; adjacent substituents R g R1, R2, R3, R4, R5, R6, and R7 can be optionally connected to form a loop; Preferably, R g R1, R2, R3, R4, R5, R6 and R7 are selected from the group consisting of the same or different each time they appear: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-12 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-12 cyclic carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-10 carbon atoms, substituted or unsubstituted aryl groups having 6-24 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-24 carbon atoms, substituted or unsubstituted amino groups having 0-20 carbon atoms, cyano groups, and combinations thereof. More preferably, R g R1, R2, R3, R4, R5, R6, and R7 are selected, each time appearing in the same or different groups of the following: hydrogen, deuterium, fluorine, cyano, methyl, ethyl, n-propyl, isopropyl, cyclopropyl, n-butyl, isobutyl, tert-butyl, cyclopentyl, neopentyl, cyclohexyl, trimethylsilyl, phenyl, pyridyl, furanyl, thiophene, pyrrole, biphenyl, terphenyl, tetraphenyl, triphenylene, tetraphenylene, naphthyl, phenanthrene, anthracene, indene, fluorene, indole, carbazole, benzofuran, dibenzofuran, benzothiophene, dibenzothiophene, dibenzothiophene, dibenzoselenophene, diphenylamino, dibenzofuranylphenylamino, and combinations thereof.

8. The compound according to claim 1 or 3, wherein, At least one of R1, R2, R3, R4, R5, R6, and R7, when appearing in the same or different manner, is selected from the group consisting of: deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted alkylgermanyl groups having 3-20 carbon atoms, substituted or unsubstituted amino groups having 0-20 carbon atoms, cyano groups, isocyano groups, and combinations thereof; adjacent substituents R1, R2, R3, R4, R5, R6, and R7 may optionally be linked to form a ring; Preferably, at least one of R1, R2, R3, R4, R5, R6 and R7, when appearing in the same or different manner, is selected from the group consisting of: deuterium, halogen, substituted or unsubstituted alkyl groups having 1-12 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-12 cyclic carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-10 carbon atoms, substituted or unsubstituted aryl groups having 6-24 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-24 carbon atoms, substituted or unsubstituted amino groups having 0-20 carbon atoms, cyano groups, and combinations thereof; More preferably, at least one of R1, R2, R3, R4, R5, R6 and R7, each time appearing, is selected from the group consisting of: deuterium, fluorine, cyano, methyl, ethyl, n-propyl, isopropyl, cyclopropyl, n-butyl, isobutyl, tert-butyl, cyclopentyl, neopentyl, cyclohexyl, trimethylsilyl, phenyl, pyridyl, furanyl, thiophene, pyrrole, biphenyl, terphenyl, tetraphenyl, triphenylene, tetraphenylene, naphthyl, phenanthrene, anthracene, indene, fluorene, indole, carbazole, benzofuran, dibenzofuran, benzothiophene, dibenzothiophene, dibenzothiophene, dibenzoselenophene, diphenylamino, dibenzofuranylphenylamino, and combinations thereof.

9. The compound of claim 1, wherein, The compounds are selected from the group consisting of compounds BN-1-A1-k1, BN-2-A2-k2, 3-1-1 to 3-1-60, 3-2-1 to 3-2-22, 3-3-1 to 3-3-78, 3-4-1 to 3-4-7, 3-5-1 to 3-5-60, 3-6-1 to 3-6-10, and 3-7-1 to 3-7-62; in compounds BN-1-A1-k1 and BN-2-A2-k2, A1 is selected from integers from 1 to 12, A2 is selected from integers from 1 to 10, k1 is selected from integers from 1 to 306, and k2 is selected from integers from 1 to 166. Compounds BN-1-1-k1 to BN-1-12-k1 have the following structures: ， ， ， ， ， ， ， ， ， ， ， ； Among them, R1, R2, R3, R4, R5, R6, R7, Y, and k1 are selected from the atoms or groups in the table below: ； Compounds BN-2-1-k1 to BN-2-10-k1 have the following structures: ， ， ， ， ， ， ， ， ， ； Among them, R1, R2, R3, R4, R5, R6, R7, Y, and k2 are selected from the atoms or groups in the table below: ； Among them, P1-P17 have the following structure: , , , , , , , , , , , , , , , , ; Compounds 3-1-1 to 3-1-60, 3-2-1 to 3-2-22, 3-3-1 to 3-3-78, 3-4-1 to 3-4-7, 3-5-1 to 3-5-60, 3-6-1 to 3-6-10, and 3-7-1 to 3-7-62 are selected from the group consisting of the following structures; ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， , , , , , , , , , , , , , , , , , , , , , , , , , , , , ； Optionally, the hydrogen in the above compounds can be partially or completely replaced by deuterium.

10. An organic electroluminescent device, comprising: anode, cathode, And an organic layer disposed between the anode and the cathode, wherein the organic layer comprises a compound as described in any one of claims 1-9.

11. The organic electroluminescent device as claimed in claim 10, wherein, The organic layer is a light-emitting layer, and the compound is a light-emitting material; Preferably, the organic electroluminescent device emits red or white light.

12. The organic electroluminescent device as claimed in claim 11, wherein, The light-emitting layer comprises at least a first host material; Preferably, the first host material has a structure represented by formula PH-1, formula PH-2, or formula PH-3: ， ， ； Among them, Y1 is selected from CR each time it appears, either the same or different. y Or N; Y2 is selected from C, CR each time it appears, either identically or differently. y Or N; L, each time it appears, is selected from single bonds, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, or combinations thereof; Ar 21 Ar 22 Ar 31 Ar 32 Ar 33 Each time it appears, it is selected from substituted or unsubstituted aryl groups having 6-30 carbon atoms, or substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, either in the same or different manner. R y Each time it appears, it is selected from the group consisting of the same or different groups of the following: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic carbon atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, and substituted or unsubstituted alkyl groups having 1-20 carbon atoms. Alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, and combinations thereof having 0-20 carbon atoms; Adjacent substituent R y They can be arbitrarily connected to form a loop; More preferably, the first host material is selected from the group consisting of compounds 1-1-1 to 1-1-104, compounds 1-2-1 to 1-2-100, and compounds 1-3-1 to 1-3-110. ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ； Optionally, the hydrogen in the structures of compounds 1-1-1 to 1-1-104, 1-2-1 to 1-2-100, and 1-3-1 to 1-3-110 can be partially or completely replaced by deuterium.

13. The organic electroluminescent device as claimed in claim 11, wherein, The light-emitting layer comprises a second host material; Preferably, the second host material has a structure represented by the formula NH-1: ； Among them, L 11 To L 13 Each time it appears, it is selected from single bonds, substituted or unsubstituted alkylene groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkylene groups having 3-20 carbon atoms, substituted or unsubstituted arylene groups having 6-30 carbon atoms, substituted or unsubstituted heteroarylene groups having 3-30 carbon atoms, or combinations thereof. Ar 11 To Ar 13 Each occurrence is selected, either identically or differently, from substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, or combinations thereof: More preferably, the second host material is selected from the group consisting of compounds B-1 to B-243: ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， , , , , , , , , ， ， ， ， ， ， ， ； Optionally, the hydrogen in the structure of compounds B-1 to B-243 may be partially or completely replaced by deuterium.

14. The organic electroluminescent device as claimed in claim 11, wherein, The light-emitting layer contains at least one metal complex; Preferably, the metal complex is a phosphorus photosensitizer; More preferably, the metal complex has M(L) a ) m (L b ) n (L c ) q The general formula; Metal M is selected from metals with a relative atomic mass greater than 40; L a L b and L c These are the first ligand, second ligand, and third ligand, respectively, that coordinate with the metal M; L a L b and L c They can be selectively linked to form multidentate ligands; L a L b and L c Same or different; m is 1, 2 or 3; n is 0, 1 or 2; q is 0, 1 or 2; the sum of m, n, and q equals the oxidation state of the metal M; when m is greater than or equal to 2, multiple L a Same or different; when n is 2, the two L b Same or different; when q is 2, the two L c Same or different; L a Each occurrence may be selected from the structure shown in Equation 2, either identically or differently: in, Ring A 11 And Ring A 12 Selected from aromatic rings having 6-30 ring atoms, heteroaromatic rings having 5-30 ring atoms, or combinations thereof; T1 and T2 are selected from C or N each time they appear, either in the same or different ways. K1 and K2 are selected from single bonds, O, S, or NR each time they appear, either identically or differently. k ; L 31 Each time it appears, select the group consisting of the following, either identically or differently: single key, BR L11 CR L11 R L11 NR L11 O, SiR L11 R L11 PR L11 S, GeR L11 R L11 Se, substituted or unsubstituted vinylene, ethynylene, substituted or unsubstituted arylene with 6-30 carbon atoms, substituted or unsubstituted heteroarylene with 3-30 carbon atoms, and combinations thereof; when two R are present simultaneously L11 At that time, two R L11 Same or different; a1 is selected from 0 or 1; R 11 and R 12 Each occurrence, whether identical or different, indicates monosubstitution, polysubstitution, or no substitution; R 11 R 12 and R k Each time it appears, it is selected from the group consisting of the same or different groups of the following: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic carbon atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, and substituted or unsubstituted alkyl groups having 1-20 carbon atoms. Alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, and combinations thereof having 0-20 carbon atoms; Adjacent substituent R 11 and R 12 They can be arbitrarily connected to form a loop; L b and L c Each occurrence may be selected from any of the following structures, either identically or differently: ， ， ， ， ， ， ， ， ， ， ， ， in, R a R b and R c Each occurrence, whether identical or different, indicates monosubstitution, polysubstitution, or no substitution; X b Each time it appears, choose from the following groups, either the same or different: O, S, Se, NR N1 and CR C1 R C2 ; X c and X d Each time it appears, choose from the following groups, either the same or different: O, S, Se, and NR. N2 ; R a R b R c R N1 R N2 R C1 and R C2 Each time it appears, it is selected from the group consisting of the same or different groups of the following: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3-20 cyclic carbon atoms, substituted or unsubstituted heteroalkyl groups having 1-20 carbon atoms, substituted or unsubstituted heterocyclic groups having 3-20 cyclic carbon atoms, substituted or unsubstituted aralkyl groups having 7-30 carbon atoms, substituted or unsubstituted alkoxy groups having 1-20 carbon atoms, substituted or unsubstituted aroxy groups having 6-30 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, substituted or unsubstituted alkenyl groups having 2-20 carbon atoms, and substituted or unsubstituted alkyl groups having 1-20 carbon atoms. Alkynyl groups having 2-20 carbon atoms, substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanium groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanium groups having 6-20 carbon atoms, substituted or unsubstituted amino, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphinyl, and combinations thereof having 0-20 carbon atoms; Adjacent substituent R a R b R c R N1 R N2 R C1 and R C2 They can be arbitrarily connected to form a loop; Most preferably, the metal complex is selected from the group consisting of compounds RD1 to RD214 and compounds GD1 to GD185: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ； , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ， , ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ， ； Optionally, the hydrogen in the structures of compounds RD1 to RD214 and compounds GD1 to GD185 may be partially or completely replaced by deuterium.

15. A compound composition comprising the compound as described in any one of claims 1-9.

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