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CN-121991103-A - Organic compound and organic electroluminescent device comprising same

CN121991103ACN 121991103 ACN121991103 ACN 121991103ACN-121991103-A

Abstract

The invention provides an organic compound and an organic electroluminescent device comprising the same, wherein the organic compound has a structure shown in a formula I, and the design and the combined action of a boron-nitrogen multiple resonance structure, a ring F and a group R X enable the organic compound to adjust light color and reduce triplet energy level, improve efficiency roll-off and service life attenuation, inhibit pi-pi accumulation among molecules and reduce sublimation temperature while keeping a narrow emission spectrum and high luminous efficiency of a multiple resonance material. The organic compound has narrow spectral characteristics, excellent electroluminescent performance and lower sublimation temperature, is used for an organic electroluminescent device, is suitable for being used as a doping material of a luminescent layer, can effectively improve the luminous efficiency and the color purity of the device, prolongs the service life of the device, reduces the voltage and comprehensively improves the luminous effect.

Inventors

  • JIA XIAOQIN
  • LI YILANG
  • GAO WENZHENG

Assignees

  • 北京鼎材科技股份有限公司

Dates

Publication Date
20260508
Application Date
20241031

Claims (17)

  1. 1. An organic compound, characterized in that the organic compound has a structure as shown in formula I: Wherein each X 1 、X 2 、X 3 、X 4 、X 5 、X 6 、X 7 is independently selected from CR A1 or N; Each Z 1 、Z 2 、Z 3 is independently selected from CR A2 or N; Ring B is selected from any one of unsubstituted or R B1 substituted C6-C60 aromatic ring, unsubstituted or R B1 substituted C3-C60 heteroaromatic ring; M is selected from O, S, se, NAr 1 、CR 1 R 2 or SiR 3 R 4 ; Ar 1 is selected from any one of unsubstituted or R B2 substituted C6-C60 aryl, unsubstituted or R B2 substituted C3-C60 heteroaryl, wherein Ar 1 is not connected with an adjacent ring structure or is connected with a chemical bond to form a ring; R A1 、R A2 、R B1 、R B2 、R 1 、R 2 、R 3 、R 4 is each independently selected from any of hydrogen, halogen, substituted or unsubstituted C1-C20 straight or branched alkyl, substituted or unsubstituted C3-C20 cycloalkyl, substituted or unsubstituted C2-C20 alkenyl, substituted or unsubstituted C1-C20 alkoxy, substituted or unsubstituted C1-C20 alkylsilyl, substituted or unsubstituted C6-C30 arylsilyl, substituted or unsubstituted C1-C20 alkylamino, substituted or unsubstituted C6-C30 heteroarylsilyl, amino, hydroxy, cyano, nitro, substituted or unsubstituted C6-C30 arylamino, substituted or unsubstituted C3-C30 heteroarylamino, substituted or unsubstituted C6-C30 aryloxy, substituted or unsubstituted C3-C30 heteroaryloxy, substituted or unsubstituted C6-C60 aryl, substituted or unsubstituted C3-C60 heteroaryl, each of said R A2 、R B1 、R B2 is independently attached to an adjacent ring structure or is attached to at least one of said R A2 、R B1 、R B2 by a bond, R A2 、R B1 、R B2 is attached to at least one of said R354 by a bond; At least one group of any adjacent two R A1 are connected by a chemical bond to form a ring F, said ring F being selected from any one of substituted or unsubstituted C3-C60 alicyclic rings; in R A1 , other groups except for forming a ring F are not connected with adjacent ring structures or are connected into a ring through chemical bonds independently; R A1 、R A2 、R B1 、R B2 、R 1 、R 2 、R 3 、R 4 , the substituents in ring F are each independently selected from halogen, unsubstituted or R 'substituted C1-C20 straight or branched alkyl, unsubstituted or R' substituted C3-C20 cycloalkyl, unsubstituted or R 'substituted C2-C20 alkenyl, unsubstituted or R' substituted C1-C20 alkoxy, unsubstituted or R 'substituted C1-C20 alkylsilyl, unsubstituted or R' substituted C6-C30 arylsilyl, unsubstituted or R 'substituted C1-C20 alkylamino, unsubstituted or R' substituted C6-C30 heteroarylsilyl, amino, hydroxy, cyano, nitro, unsubstituted or R 'substituted C6-C30 arylamino, unsubstituted or R' substituted C3-C30 heteroarylamino, unsubstituted or R 'substituted C6-C30 aryloxy, unsubstituted or R' substituted C3-C30 heteroaryloxy, unsubstituted or R 'substituted C6-C60 aryl, unsubstituted or R' substituted C3-C60 heteroaryl, each of which are not linked independently through a bond to each other or through any adjacent ring; M 1 is selected from any one of single bond, O, S, se, NAr m1 、CR m1 R m2 or SiR m3 R m4 ; Ar m1 is selected from any one of unsubstituted or R 'substituted C6-C60 aryl, unsubstituted or R' substituted C3-C60 heteroaryl; r m1 、R m2 、R m3 、R m4 is independently selected from any one of hydrogen, halogen, unsubstituted or R ' substituted C1-C20 straight or branched alkyl, unsubstituted or R ' substituted C3-C20 cycloalkyl, unsubstituted or R ' substituted C2-C20 alkenyl, unsubstituted or R ' substituted C6-C60 aryl, unsubstituted or R ' substituted C3-C60 heteroaryl, wherein R m1 and R m2 are not connected or are connected through a chemical bond to form a ring, and R m3 and R m4 are not connected or are connected through a chemical bond to form a ring; At least one of the R A1 、R A2 、R B1 、R B2 is a group R X , and the R X has a structure shown as a formula a: Wherein, the Represents the attachment site of the group; L is selected from any one of single bond, substituted or unsubstituted C6-C60 arylene, and substituted or unsubstituted C3-C60 heteroarylene; x 11 、X 12 、X 13 、X 14 、X 19 、X 20 are each independently selected from any one of C, CR 5 or N, and 1 of them is C, said C being linked to L; each X 15 、X 16 、X 17 、X 18 is independently selected from CR 5 or N; r 5 is each independently selected from the group consisting of hydrogen, halogen, unsubstituted or R ' substituted C1-C20 straight or branched alkyl, unsubstituted or R ' substituted C3-C20 cycloalkyl, unsubstituted or R ' substituted C2-C20 alkenyl, unsubstituted or R ' substituted C1-C20 alkoxy, unsubstituted or R ' substituted C1-C20 alkylsilyl, unsubstituted or R ' substituted C6-C30 arylsilyl, unsubstituted or R ' substituted C1-C20 alkylamino, unsubstituted or R ' substituted C6-C30 heteroarylsilyl, amino, hydroxy, cyano, nitro, unsubstituted or R ' substituted C6-C30 arylamino, unsubstituted or R ' substituted C3-C30 heteroarylamino, unsubstituted or R ' substituted C6-C30 aryloxy, unsubstituted or R ' substituted C3-C30 heteroaryloxy, unsubstituted or R ' substituted C6-C60 aryl, unsubstituted or R ' substituted C3-C60 heteroaryl, and at least two adjacent R ' substituted C3-C60 heteroaryl groups are independently linked to each other through at least one bond or a ring 8664; Each of the substituents in L is independently selected from the group consisting of halogen, unsubstituted or R ' substituted C1-C20 straight or branched alkyl, unsubstituted or R ' substituted C3-C20 cycloalkyl, unsubstituted or R ' substituted C2-C20 alkenyl, unsubstituted or R ' substituted C1-C20 alkoxy, unsubstituted or R ' substituted C1-C20 alkylsilyl, unsubstituted or R ' substituted C6-C30 arylsilyl, unsubstituted or R ' substituted C1-C20 alkylamino, unsubstituted or R ' substituted C6-C30 heteroarylsilyl, amino, hydroxyl, cyano, nitro, unsubstituted or R ' substituted C6-C30 arylamino, unsubstituted or R ' substituted C3-C30 heteroarylamino, unsubstituted or R ' substituted C6-C30 heteroaryloxy, unsubstituted or R ' substituted C6-C60 aryl, unsubstituted or R ' substituted C3-C60 heteroaryl, each of which is independently linked to at least two adjacent substituents independently through a bond or a bond to each other through a ring; R ' are each independently selected from any one or a combination of at least two of halogen, cyano, nitro, hydroxy, amino, C1-C20 straight or branched chain alkyl, C2-C20 alkenyl, C3-C20 cycloalkyl, C1-C20 alkoxy, C1-C20 alkylsilyl, C6-C60 arylamino, C3-C60 heteroarylamino, C6-C30 aryloxy, C3-C30 heteroaryloxy, C6-C30 arylsilyl, C6-C30 heteroarylsilyl, C6-C60 aryl, C3-C60 heteroaryl, adjacent at least two R ' are not connected or are connected by chemical bonds to form a ring, and the R ' is not connected or is connected by chemical bonds to adjacent ring structures.
  2. 2. The organic compound according to claim 1, wherein the organic compound has a structure as shown in formula II: Wherein ,X 1 、X 2 、X 3 、X 4 、X 5 、X 6 、X 7 、Z 1 、Z 2 、Z 3 、 ring B and Ar 1 have the same defined ranges as in claim 1.
  3. 3. The organic compound according to claim 1, wherein the organic compound has a structure as shown in any one of formula III-1, formula III-2, formula III-3, and formula III-4: Wherein ,X 1 、X 2 、X 3 、X 4 、X 5 、X 6 、X 7 、Z 1 、Z 2 、Z 3 、 ring B, ring F and Ar 1 have the same defined ranges as in claim 1; Preferably, the organic compound has a structure as shown in formula III-1, formula III-2 or formula III-4.
  4. 4. The organic compound according to claim 1, wherein the organic compound has a structure as shown in any one of formula IV-1, formula IV-2, formula IV-3: wherein X 1 、X 2 、X 3 、X 4 、X 7 、Z 1 、Z 2 、Z 3 and ring F have the same defined ranges as in claim 1; Y 1 、Y 2 、Y 3 、Y 4 、Y 5 、Y 6 、Y 7 、Y 8 、Y 9 are each independently selected from CR C or N; R C is each independently selected from any of hydrogen, halogen, substituted or unsubstituted C1-C20 straight or branched alkyl, substituted or unsubstituted C3-C20 cycloalkyl, substituted or unsubstituted C2-C20 alkenyl, substituted or unsubstituted C1-C20 alkoxy, substituted or unsubstituted C1-C20 alkylsilyl, substituted or unsubstituted C6-C30 arylsilyl, substituted or unsubstituted C1-C20 alkylamino, substituted or unsubstituted C6-C30 heteroarylsilyl, amino, hydroxy, cyano, nitro, substituted or unsubstituted C6-C30 arylamino, substituted or unsubstituted C3-C30 heteroarylamino, substituted or unsubstituted C6-C30 aryloxy, substituted or unsubstituted C3-C30 heteroaryloxy, substituted or unsubstituted C6-C60 aryl, substituted or unsubstituted C3-C60 heteroaryl, and adjacent at least two R C are not linked or are linked by a chemical bond; The dotted line represents a single bond or no connection, a represents 0 or 1; Each M 2 、M 3 is independently selected from any one of O, S, se, NAr m2 、CR m5 R m6 or SiR m7 R m8 ; Ar m2 is selected from any one of unsubstituted or R 'substituted C6-C60 aryl and unsubstituted or R' substituted C3-C60 heteroaryl, ar m2 is not connected with an adjacent ring structure or is connected with a chemical bond to form a ring; R m5 、R m6 、R m7 、R m8 is independently selected from any one of hydrogen, halogen, unsubstituted or R ' substituted C1-C20 straight or branched alkyl, unsubstituted or R ' substituted C3-C20 cycloalkyl, unsubstituted or R ' substituted C2-C20 alkenyl, unsubstituted or R ' substituted C6-C60 aryl, unsubstituted or R ' substituted C3-C60 heteroaryl, wherein R m5 and R m6 are not connected or are connected through a chemical bond to form a ring, and R m7 and R m8 are not connected or are connected through a chemical bond to form a ring; Preferably, the organic compound has a structure as shown in formula IV-1.
  5. 5. The organic compound according to claim 4, wherein the organic compound has a structure represented by any one of formula V-1, formula V-2, formula V-3, formula V-4, formula V-5, and formula V-6: Wherein the dotted line represents a single bond or no linkage; X 1 、X 2 、X 3 、X 4 、X 7 、Z 1 、Z 2 、Z 3 、Y 1 、Y 3 、Y 4 、Y 5 、Y 6 、Y 7 And ring F has the same defined range as in claim 4; M 4 is selected from any one of O, S, NAr 2 or CR 5 R 6 ; ar 2 is selected from any one of unsubstituted or R 'substituted C6-C60 aryl, unsubstituted or R' substituted C3-C60 heteroaryl; R 5 、R 6 is each independently selected from any of hydrogen, unsubstituted or R 'substituted C1-C20 straight or branched alkyl, unsubstituted or R' substituted C3-C20 cycloalkyl, unsubstituted or R 'substituted C2-C20 alkenyl, unsubstituted or R' substituted C1-C20 alkoxy, unsubstituted or R 'substituted C1-C20 alkylsilyl, unsubstituted or R' substituted C6-C30 arylsilyl, unsubstituted or R 'substituted C1-C20 alkylamino, unsubstituted or R' substituted C6-C30 heteroarylsilyl, amino, hydroxy, cyano, nitro, unsubstituted or R 'substituted C6-C30 arylamino, unsubstituted or R' substituted C3-C30 heteroarylamino, unsubstituted or R 'substituted C6-C30 aryloxy, unsubstituted or R' substituted C3-C30 heteroaryloxy, unsubstituted or R 'substituted C6-C60 aryl, unsubstituted or R' substituted C3-C60 heteroaryl, and R 6 is not linked to R 5 by a bond; each Q 1 、Q 2 、Q 3 、Q 4 is independently selected from CR D or N; R D is independently selected from hydrogen, halogen, unsubstituted or R ' substituted C1-C20 straight or branched alkyl, unsubstituted or R ' substituted C3-C20 cycloalkyl, unsubstituted or R ' substituted C2-C20 alkenyl, unsubstituted or R ' substituted C1-C20 alkoxy, unsubstituted or R ' substituted C1-C20 alkylsilyl, unsubstituted or R ' substituted C6-C30 arylsilyl, unsubstituted or R ' substituted C1-C20 alkylamino, unsubstituted or R ' substituted C6-C30 heteroarylsilyl, amino, hydroxy, cyano, nitro, unsubstituted or R ' substituted C6-C30 arylamino, unsubstituted or R ' substituted C3-C30 heteroarylamino, unsubstituted or R ' substituted C6-C30 aryloxy, unsubstituted or R ' substituted C3-C30 heteroaryloxy, unsubstituted or R ' substituted C6-C60 aryl, unsubstituted or R ' substituted C3-C60 heteroaryl, and at least two adjacent R ' substituted C3-C60 heteroaryl groups are not joined to each other by a bond or a ring of R D .
  6. 6. The organic compound according to any one of claims 1 to 5, wherein the ring F is selected from any one of substituted or unsubstituted C4-C20 alicyclic rings; Preferably, the substituents of the substituents in ring F are each independently selected from any one of deuterium, unsubstituted or R 'substituted C1-C10 straight or branched alkyl, unsubstituted or R' substituted C3-C10 cycloalkyl; preferably, the ring F is selected from any one of the following groups: wherein the dashed line represents a fused bond of the group; preferably, the ring F is
  7. 7. An organic compound according to claim 4 or 5, wherein at least one of said X 1 、X 2 、X 3 、X 4 、X 7 、Y 1 、Y 2 、Y 3 、Y 4 、Y 5 、Y 6 、Y 7 、Z 1 、Z 2 、Z 3 is CR X , preferably at least one of said X 2 、X 3 、X 4 、Y 4 、Y 5 、Y 6 and Z 2 is CR X , preferably at least one of said X 2 、X 3 、Y 4 、Y 5 and Z 2 is CR X , further preferably Z 2 is CR X .
  8. 8. The organic compound according to claim 4 or 5, wherein each X 1 、X 2 、X 3 is independently CR A1 and/or each X 4 、X 5 、X 6 、X 7 is independently CR A1 ; Preferably, each R A1 is independently selected from any one of hydrogen, R X , halogen, cyano, substituted or unsubstituted C1-C10 straight or branched alkyl, substituted or unsubstituted C3-C10 cycloalkyl, substituted or unsubstituted C2-C10 alkenyl, substituted or unsubstituted C1-C10 alkoxy, substituted or unsubstituted C3-C10 alkylsilyl, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C3-C30 heteroaryl, substituted or unsubstituted C6-C30 arylamino, further preferably any one of hydrogen, R X , substituted or unsubstituted C1-C6 straight or branched alkyl, substituted or unsubstituted C6-C20 aryl, substituted or unsubstituted C3-C20 heteroaryl, substituted or unsubstituted C6-C20 arylamino; Preferably, each Z 1 、Z 2 、Z 3 is independently CR A2 ; Preferably, each R A2 is independently selected from any one of hydrogen, R X , halogen, cyano, substituted or unsubstituted C1-C10 straight or branched alkyl, substituted or unsubstituted C3-C10 cycloalkyl, substituted or unsubstituted C2-C10 alkenyl, substituted or unsubstituted C1-C10 alkoxy, substituted or unsubstituted C3-C10 alkylsilyl, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C3-C30 heteroaryl, substituted or unsubstituted C6-C30 arylamino, further preferably any one of hydrogen, R X , substituted or unsubstituted C1-C6 straight or branched alkyl, substituted or unsubstituted C6-C20 aryl, substituted or unsubstituted C3-C20 heteroaryl; Preferably, each of the Y 1 、Y 2 、Y 3 is independently CR C , and/or each of the Y 4 、Y 5 、Y 6 、Y 7 is independently CR C ; Preferably, each R C is independently selected from any one of hydrogen, R X , halogen, cyano, substituted or unsubstituted C1-C10 straight or branched alkyl, substituted or unsubstituted C3-C10 cycloalkyl, substituted or unsubstituted C2-C10 alkenyl, substituted or unsubstituted C1-C10 alkoxy, substituted or unsubstituted C3-C10 alkylsilyl, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C3-C30 heteroaryl, substituted or unsubstituted C6-C30 arylamino, further preferably any one of hydrogen, R X , substituted or unsubstituted C1-C6 straight or branched alkyl, substituted or unsubstituted C6-C20 aryl, substituted or unsubstituted C3-C20 heteroaryl, substituted or unsubstituted C6-C20 arylamino; preferably, each Q 1 、Q 2 、Q 3 、Q 4 is independently selected from CR D ; Preferably, each R D is independently selected from any one of hydrogen, halogen, cyano, unsubstituted or R 'substituted C1-C10 straight or branched alkyl, unsubstituted or R' substituted C3-C10 cycloalkyl, unsubstituted or R 'substituted C1-C10 alkoxy, unsubstituted or R' substituted C3-C10 alkylsilyl, unsubstituted or R 'substituted C6-C20 aryl, unsubstituted or R' substituted C3-C20 heteroaryl.
  9. 9. The organic compound according to claim 1, wherein the organic compound has a structure as shown in any one of formulas VI-1 to VI-9: Wherein M 4 is selected from any one of O, S, NAr 2 or CR 5 R 6 ; ar 2 is selected from any one of unsubstituted or R 'substituted C6-C60 aryl, unsubstituted or R' substituted C3-C60 heteroaryl; R 5 、R 6 is independently selected from any one of hydrogen, unsubstituted or R ' substituted C1-C20 straight-chain or branched alkyl, unsubstituted or R ' substituted C3-C20 cycloalkyl, unsubstituted or R ' substituted C2-C20 alkenyl, unsubstituted or R ' substituted C6-C60 aryl, unsubstituted or R ' substituted C3-C60 heteroaryl, wherein R 5 and R 6 are not connected or are connected through a chemical bond to form a ring; r A1 、R A2 、R C1 、R C2 、R D each independently represents unsubstituted, monosubstituted to maximally permissible substitution; R A1 、R A2 、R C1 、R C2 、R C3 is each independently selected from any of hydrogen, halogen, substituted or unsubstituted C1-C20 straight or branched alkyl, substituted or unsubstituted C3-C20 cycloalkyl, substituted or unsubstituted C2-C20 alkenyl, substituted or unsubstituted C1-C20 alkoxy, substituted or unsubstituted C1-C20 alkylsilyl, substituted or unsubstituted C6-C30 arylsilyl, substituted or unsubstituted C1-C20 alkylamino, substituted or unsubstituted C6-C30 heteroarylsilyl, amino, hydroxy, cyano, nitro, substituted or unsubstituted C6-C30 arylamino, substituted or unsubstituted C3-C30 heteroarylamino, substituted or unsubstituted C6-C30 aryloxy, substituted or unsubstituted C3-C30 heteroaryloxy, substituted or unsubstituted C6-C60 aryl, substituted or unsubstituted C3-C60 heteroaryl; At least one of the R A1 、R A2 、R C1 、R C2 、R C3 groups is a group R X ; R D is each independently selected from any of hydrogen, halogen, unsubstituted or R 'substituted C1-C20 straight or branched alkyl, unsubstituted or R' substituted C3-C20 cycloalkyl, unsubstituted or R 'substituted C2-C20 alkenyl, unsubstituted or R' substituted C1-C20 alkoxy, unsubstituted or R 'substituted C1-C20 alkylsilyl, unsubstituted or R' substituted C6-C30 arylsilyl, unsubstituted or R 'substituted C1-C20 alkylamino, unsubstituted or R' substituted C6-C30 heteroarylsilyl, amino, hydroxy, cyano, nitro, unsubstituted or R 'substituted C6-C30 arylamino, unsubstituted or R' substituted C3-C30 heteroarylamino, unsubstituted or R 'substituted C6-C30 aryloxy, unsubstituted or R' substituted C3-C30 heteroaryloxy, unsubstituted or R 'substituted C6-C60 aryl, unsubstituted or R' substituted C3-C60 heteroaryl; each R A1 、R A2 、R C1 、R C2 、R C3 、R D is independently connected with an adjacent ring structure or is connected with the adjacent ring structure through a chemical bond to form a ring, and any adjacent at least two groups in the R A1 、R A2 、R C1 、R C2 、R C3 、R D are not connected with each other or are connected with each other through the chemical bond to form a ring; Each M 2 、M 3 is independently selected from any one of O, S, NAr m2 、CR m5 R m6 or SiR m7 R m8 ; Ar m2 is selected from any one of unsubstituted or R 'substituted C6-C60 aryl and unsubstituted or R' substituted C3-C60 heteroaryl, ar m2 is not connected with an adjacent ring structure or is connected with a chemical bond to form a ring; R m5 、R m6 、R m7 、R m8 is independently selected from any one of hydrogen, halogen, unsubstituted or R ' substituted C1-C20 straight or branched alkyl, unsubstituted or R ' substituted C3-C20 cycloalkyl, unsubstituted or R ' substituted C2-C20 alkenyl, unsubstituted or R ' substituted C6-C60 aryl, unsubstituted or R ' substituted C3-C60 heteroaryl, wherein R m5 and R m6 are not connected or are connected through a chemical bond to form a ring, and R m7 and R m8 are not connected or are connected through a chemical bond to form a ring; the dotted line represents a single bond or no connection, and a represents 0 or 1.
  10. 10. The organic compound according to claim 9, wherein each R A1 is independently selected from any one of hydrogen, R X , substituted or unsubstituted C1-C10 linear or branched alkyl, substituted or unsubstituted C3-C10 cycloalkyl, substituted or unsubstituted C2-C10 alkenyl, substituted or unsubstituted C6-C20 aryl, substituted or unsubstituted C3-C20 heteroaryl, substituted or unsubstituted C6-C20 arylamino, further preferably any one of hydrogen, R X , substituted or unsubstituted: methyl, deuteromethyl, trifluoromethyl, trimethylsilyl, ethyl, pentafluoroethyl, isopropyl, tert-butyl, isobutyl, tert-pentyl, adamantyl, cyclohexyl, phenyl, naphthyl, biphenyl, terphenyl, dibenzofuranyl, dibenzothienyl, N-phenylcarbazolyl, carbazolyl, fluorenyl, furanyl, benzofuranyl, thienyl, benzothienyl, indolyl, benzindolyl, piperidinyl, pyrrolyl, 9-dimethylacridyl, phenoxazine, phenothiazinyl, norbornyl, pyridinyl, pyrimidinyl, triazinyl, di (phenyl) amino; Preferably, each R A2 is independently selected from any one of hydrogen, R X , substituted or unsubstituted C1-C10 straight or branched alkyl, substituted or unsubstituted C3-C10 cycloalkyl, substituted or unsubstituted C2-C10 alkenyl, substituted or unsubstituted C6-C20 aryl, substituted or unsubstituted C3-C20 heteroaryl, substituted or unsubstituted C6-C20 arylamino, further preferably any one of methyl, deuteromethyl, trifluoromethyl, trimethylsilyl, ethyl, pentafluoroethyl, isopropyl, tert-butyl, isobutyl, tert-pentyl, adamantyl, cyclohexyl, phenyl, naphthyl, biphenyl, terphenyl, dibenzofuranyl, dibenzothienyl, N-phenylcarbazolyl, carbazolyl, fluorenyl, furanyl, benzofuranyl, thienyl, benzothienyl, indolyl, benzindolyl, piperidinyl, pyrrolyl, 9-dimethylacridyl, phenazinyl, norpyridyl, norbornyl, phenazinyl, norbornyl; Preferably, each R C1 、R C2 、R C3 is independently selected from any one of hydrogen, R X , substituted or unsubstituted C1-C10 straight or branched alkyl, substituted or unsubstituted C3-C10 cycloalkyl, substituted or unsubstituted C2-C10 alkenyl, substituted or unsubstituted C6-C20 aryl, substituted or unsubstituted C3-C20 heteroaryl, substituted or unsubstituted C6-C20 arylamino, further preferably any one of hydrogen, R X , substituted or unsubstituted: methyl, deuteromethyl, trifluoromethyl, trimethylsilyl, ethyl, pentafluoroethyl, isopropyl, tert-butyl, isobutyl, tert-pentyl, adamantyl, cyclohexyl, phenyl, naphthyl, biphenyl, terphenyl, dibenzofuranyl, dibenzothienyl, N-phenylcarbazolyl, carbazolyl, fluorenyl, furanyl, benzofuranyl, thienyl, benzothienyl, indolyl, benzindolyl, piperidinyl, pyrrolyl, 9-dimethylacridyl, phenoxazine, phenothiazinyl, norbornyl, pyridinyl, pyrimidinyl, triazinyl, di (phenyl) amino; Preferably, each R D is independently selected from any one of hydrogen, unsubstituted or R 'substituted C1-C10 straight or branched alkyl, unsubstituted or R' substituted C3-C10 cycloalkyl, unsubstituted or R 'substituted C6-C20 aryl, unsubstituted or R' substituted C3-C20 heteroaryl.
  11. 11. The organic compound according to any one of claims 1 to 9, wherein R X has a structure as shown in formula b: Wherein, the Represents the attachment site of the group; L has the same defined range as in formula a; R 5 represents unsubstituted, monosubstituted to maximally permissible substitution; r 5 is each independently selected from the group consisting of hydrogen, halogen, unsubstituted or R ' substituted C1-C20 straight or branched alkyl, unsubstituted or R ' substituted C3-C20 cycloalkyl, unsubstituted or R ' substituted C2-C20 alkenyl, unsubstituted or R ' substituted C1-C20 alkoxy, unsubstituted or R ' substituted C1-C20 alkylsilyl, unsubstituted or R ' substituted C6-C30 arylsilyl, unsubstituted or R ' substituted C1-C20 alkylamino, unsubstituted or R ' substituted C6-C30 heteroarylsilyl, amino, hydroxy, cyano, nitro, unsubstituted or R ' substituted C6-C30 arylamino, unsubstituted or R ' substituted C3-C30 heteroarylamino, unsubstituted or R ' substituted C6-C30 aryloxy, unsubstituted or R ' substituted C3-C30 heteroaryloxy, unsubstituted or R ' substituted C6-C60 aryl, unsubstituted or R ' substituted C3-C60 heteroaryl, and at least two adjacent R ' substituted C3-C60 heteroaryl groups are independently linked to each other through at least one bond or a ring 8664; Preferably, R X has a structure as shown in formula c-1 or formula c-2: Wherein, the Represents the attachment site of the group; R 52 、R 53 each independently represents unsubstituted, monosubstituted to maximally permissible substitution; R 51 、R 52 、R 53 、R 54 is each independently selected from the group consisting of hydrogen, halogen, unsubstituted or R 'substituted C1-C20 straight or branched alkyl, unsubstituted or R' substituted C3-C20 cycloalkyl, unsubstituted or R 'substituted C2-C20 alkenyl, unsubstituted or R' substituted C1-C20 alkoxy, unsubstituted or R 'substituted C1-C20 alkylsilyl, unsubstituted or R' substituted C6-C30 arylsilyl, unsubstituted or R 'substituted C1-C20 alkylamino, unsubstituted or R' substituted C6-C30 heteroarylsilyl, amino, hydroxy, cyano, nitro, unsubstituted or R 'substituted C6-C30 arylamino, unsubstituted or R' substituted C3-C30 heteroarylamino, unsubstituted or R 'substituted C6-C30 aryloxy, unsubstituted or R' substituted C3-C30 heteroaryloxy, unsubstituted or R 'substituted C6-C60 aryl, unsubstituted or R' substituted C3-C60 heteroaryl, and at least two adjacent R35 are independently linked to each other by at least two adjacent R35 linkages or a ring, and are not linked by a chemical bond or a ring 35; preferably, R X is Preferably, each R 51 、R 54 is independently selected from any one of hydrogen, unsubstituted or R 'substituted C1-C10 straight or branched alkyl, unsubstituted or R' substituted C3-C10 cycloalkyl, unsubstituted or R 'substituted C3-C10 alkylsilyl, unsubstituted or R' substituted C6-C20 aryl, unsubstituted or R 'substituted C3-C20 heteroaryl; further preferred is any of unsubstituted or R' substituted C1-C6 straight or branched alkyl, unsubstituted or R 'substituted C3-C6 alkylsilyl, unsubstituted or R' substituted C6-C20 aryl, unsubstituted or R 'substituted C3-C20 heteroaryl, and still further preferred is any of unsubstituted or R' substituted methyl, deuteromethyl, trimethylsilyl, N-butyl, t-butyl, 2-dimethylpropyl, trimethylsilylmethyl, adamantyl, cyclohexyl, phenyl, naphthyl, biphenyl, terphenyl, dibenzofuranyl, dibenzothienyl, carbazolyl, N-phenylcarbazolyl, fluorenyl, furanyl, benzofuranyl, thienyl, benzothienyl, indolyl, benzindolyl, pyridyl, norbornyl.
  12. 12. The organic compound according to any one of claims 1 to 9, wherein L is selected from a single bond or any one of the following groups: Represents the attachment site of the group; Y 11 、Y 12 、Y 13 、Y 14 、Y 15 、Y 16 、Y 17 、Y 18 are each independently selected from any one of CR 11 or N; M 5 is selected from any one of O, S, NAr m3 or CR m9 R m0 ; Ar m3 is selected from any one of unsubstituted or R 'substituted C6-C60 aryl, unsubstituted or R' substituted C3-C60 heteroaryl; R 11 、R m9 、R m0 is each independently selected from the group consisting of hydrogen, halogen, unsubstituted or R 'substituted C1-C20 straight or branched alkyl, unsubstituted or R' substituted C3-C20 cycloalkyl, unsubstituted or R 'substituted C2-C20 alkenyl, unsubstituted or R' substituted C1-C20 alkoxy, unsubstituted or R 'substituted C1-C20 alkylsilyl, unsubstituted or R' substituted C6-C30 arylsilyl, unsubstituted or R 'substituted C1-C20 alkylamino, unsubstituted or R' substituted C6-C30 heteroarylsilyl, amino, hydroxy, cyano, nitro, unsubstituted or R 'substituted C6-C30 arylamino, unsubstituted or R' substituted C3-C30 heteroarylamino, unsubstituted or R 'substituted C6-C30 aryloxy, unsubstituted or R' substituted C3-C30 heteroaryloxy, unsubstituted or R 'substituted C6-C60 aryl, unsubstituted or R' substituted C3-C60 heteroaryl, and R35 are each independently linked to each other by a bond or a bond that is not connected to R35 by a bond; Preferably, L is selected from any one of the following groups: preferably, each of said Y 11 、Y 12 、Y 13 、Y 14 、Y 15 、Y 16 、Y 17 、Y 18 is independently selected from CR 11 ; Preferably, each R 11 is independently selected from any one of hydrogen, unsubstituted or R 'substituted C1-C10 straight or branched alkyl, unsubstituted or R' substituted C3-C10 cycloalkyl, unsubstituted or R 'substituted C6-C20 aryl, unsubstituted or R' substituted C3-C20 heteroaryl.
  13. 13. The organic compound according to any one of claims 1 to 11, wherein L is selected from a single bond or any one of the following groups: representing the attachment site of the group.
  14. 14. The organic compound according to claim 1, wherein the organic compound has a structure as shown in any one of the following C001-C216:
  15. 15. Use of an organic compound according to any one of claims 1 to 14, wherein the organic compound is applied to an organic electronic device; preferably, the organic electronic device comprises an organic electroluminescent device; Preferably, the organic compound is used as a light emitting layer material in an organic electroluminescent device.
  16. 16. An organic electroluminescent device, comprising a first electrode, a second electrode, and at least one organic layer disposed between the first electrode and the second electrode, wherein the organic layer comprises at least one organic compound according to any one of claims 1-14; preferably, the organic layer comprises a light-emitting layer comprising at least one organic compound according to any one of claims 1 to 14; preferably, the light emitting layer comprises a host material and a doping material comprising at least one organic compound according to any one of claims 1-14; Preferably, the light emitting layer further comprises a sensitizer; preferably, the sensitizer comprises any one or a combination of at least two of a thermally activated delayed fluorescence material, a phosphorescence luminescent material.
  17. 17. A display device, characterized in that the display device comprises the organic electroluminescent device according to claim 16.

Description

Organic compound and organic electroluminescent device comprising same Technical Field The invention belongs to the technical field of organic electroluminescent materials, and particularly relates to an organic compound and an organic electroluminescent device containing the same. Background Optoelectronic devices based on organic materials have become increasingly popular in recent years. The inherent flexibility of organic materials makes them very suitable for fabrication on flexible substrates, which can be designed to produce aesthetically pleasing and cool optoelectronic products, as desired, with no comparable advantages over inorganic materials. Examples of such organic optoelectronic devices include Organic Light Emitting Diodes (OLEDs), organic field effect transistors, organic photovoltaic cells, organic sensors, etc., wherein OLEDs have evolved particularly rapidly and have been commercially successful in the field of information display. OLED can provide three colors of red, green and blue with high saturation, and the full-color display device manufactured by the OLED does not need extra backlight source and has the advantages of colorful, light, thin, soft and the like. The OLED device core is a thin film structure containing a plurality of organic functional materials. Common organic functional materials are hole injecting materials, hole transporting materials, hole blocking materials, electron injecting materials, electron transporting materials, electron blocking materials, light emitting host materials, light emitting guest materials (light emitting dyes), and the like. When energized, electrons and holes are injected, transported to the light emitting region, respectively, and recombined therein, thereby generating excitons and emitting light. At present, researchers have developed a plurality of organic materials, and can improve carrier mobility, regulate carrier balance, break through electroluminescent efficiency and delay device attenuation by combining various device structures. According to the light emission mechanism, OLEDs can be classified into fluorescence emission, phosphorescence emission, thermally excited delayed fluorescence, and thermally excited sensitized fluorescence. For quantum mechanical reasons, common fluorescent emitters emit light mainly using singlet excitons generated when electrons and holes are combined, and are still widely used in various OLED products. Some metal complexes (e.g., iridium complexes) can emit light using both triplet and singlet excitons, known as phosphorescent emitters, and can have energy conversion efficiencies up to 4 times greater than conventional fluorescent emitters. The thermal excitation delayed fluorescence (TADF) technique can still effectively utilize triplet excitons to achieve higher luminous efficiency by promoting intersystem leap of triplet excitons to singlet excitons without using a metal complex. The thermal excitation sensitized fluorescence (TASF) technology adopts a material with TADF property, and sensitizes the luminophor in an energy transfer mode, so that higher luminous efficiency can be realized. Currently, OLED-based screens and displays have good efficiency and lifetime, but OLED devices having long lifetime, high efficiency and high color purity at the same time remain a difficulty in research and development. As OLED products are increasingly introduced into the market, there is an increasing demand for the performance of the products. For example, compared with the existing DCI-P3 color gamut standard, the color gamut standard BT-2020 meeting the image signals of 4K and 8K age has obviously increased color gamut coverage rate, and the demand for red, green and blue colors is also increased, especially green light, chromaticity is increased from original CIE (0.265,0.690) to CIE (0.170,0.797), a luminescent material adopting a narrow half-peak width emission spectrum is one of important means for realizing high light color purity and high efficiency, and in the current commercialized OLED materials, a green light luminescent material adopting a phosphorescent material with wider half-peak width and stronger shoulder at long wavelength is difficult to simultaneously meet the demands for high efficiency, long service life and excellent color purity. In recent years, researchers develop TADF materials with 100% theoretical exciton utilization rate and narrow emission spectrum, which are expected to realize the requirement of high color purity of BT-2020 as OLED luminescent materials, and can ensure higher efficiency, but the materials roll off seriously under high brightness, and the service lives of the devices are shorter, so that the materials can not reach the standards of mass production and use. In order to solve the foregoing problems, scientists have proposed a strategy of superfluorescence, that is, energy transfer is performed to transfer excitation state energy of TADF material or phosphorescen