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CN-121991104-A - Organic compound and application thereof

CN121991104ACN 121991104 ACN121991104 ACN 121991104ACN-121991104-A

Abstract

The invention provides an organic compound and application thereof, wherein the organic compound has a structure shown in a formula I, and the organic compound has the properties of multiple resonance molecules and conjugated molecules through the design of a molecular structure and the mutual compounding of the structures, namely, the organic compound has a narrow fluorescence emission spectrum, high quantum efficiency and long service life of a device.

Inventors

  • LI YILANG
  • XU CHAO
  • JIA XIAOQIN

Assignees

  • 北京鼎材科技股份有限公司

Dates

Publication Date
20260508
Application Date
20241031

Claims (15)

  1. 1. An organic compound, characterized in that the organic compound has a structure as shown in formula I: wherein M 1 is O or S; Ring A and ring E are each independently selected from any one of unsubstituted or R A -substituted C6-C60 aromatic ring and unsubstituted or R A -substituted C3-C60 heteroaromatic ring, wherein a heteroatom in the C3-C60 heteroaromatic ring is selected from at least one of N, O, S; Ar 1 is selected from any one of unsubstituted or R B substituted C6-C60 aryl, unsubstituted or R B substituted C3-C60 heteroaryl, ar 1 is not connected with an adjacent ring structure or is connected into a ring through a chemical bond; r A 、R B is each independently selected from any of R X , cyano, substituted or unsubstituted C1-C20 straight or branched alkyl, substituted or unsubstituted C3-C20 cycloalkyl, substituted or unsubstituted C1-C20 silylalkyl, substituted or unsubstituted C6-C30 aryloxy, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C3-C30 heteroaryl, substituted or unsubstituted C6-C30 arylamino, substituted or unsubstituted C3-C30 heteroarylamino, substituted or unsubstituted C6-C30 arylthio, R A 、R B is each independently unconnected to an adjacent ring structure or connected by a chemical bond to form a ring; Each X 1 、X 2 、X 3 、X 4 is independently selected from CR M or N; R M is independently selected from any one of hydrogen, R X , substituted or unsubstituted C1-C20 straight-chain or branched alkyl, substituted or unsubstituted C3-C20 cycloalkyl, substituted or unsubstituted C1-C20 silylalkyl, substituted or unsubstituted C6-C30 aryloxy, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C3-C30 heteroaryl, substituted or unsubstituted C6-C30 arylamino, substituted or unsubstituted C3-C30 heteroarylamino and substituted or unsubstituted C6-C30 arylthio, any adjacent two R M are not connected or are connected through a chemical bond to form a ring, and R M is independently not connected or connected through a chemical bond to an adjacent ring structure to form a ring; Each of the substituents in R A 、R B 、R M is independently selected from any of halogen, cyano, unsubstituted or R 'substituted C1-C20 straight or branched alkyl, unsubstituted or R' substituted C3-C20 cycloalkyl, unsubstituted or R 'substituted C1-C20 silylalkyl, unsubstituted or R' substituted C6-C30 aryloxy, unsubstituted or R 'substituted C3-C30 heteroaryloxy, unsubstituted or R' substituted C6-C30 aryl, unsubstituted or R 'substituted C3-C30 heteroaryl, unsubstituted or R' substituted C6-C30 arylamino, unsubstituted or R 'substituted C3-C30 heteroarylamino, unsubstituted or R' substituted C6-C30 arylthio, and each of the substituents in R A 、R B 、R M is independently unconnected to an adjacent ring structure or is chemically bonded to form a ring; At least one of the R A 、R B 、R M is the R X , and the R X has a structure as shown in formula a: * -L-Ar 2 formula a; wherein — represents the attachment site of the group; L is selected from any one of unsubstituted or R C substituted C6-C18 arylene; R C is independently selected from any one of cyano, unsubstituted or R ' substituted C1-C20 straight or branched alkyl, unsubstituted or R ' substituted C3-C20 cycloalkyl, unsubstituted or R ' substituted C6-C30 arylamino, unsubstituted or R ' substituted C3-C30 heteroarylamino, unsubstituted or R ' substituted C6-C10 aryl; ar 2 is selected from any one of unsubstituted or R D substituted C14-C60 condensed aryl; R D is each independently selected from any one of cyano, unsubstituted or R ' substituted C1-C20 straight or branched alkyl, unsubstituted or R ' substituted C3-C20 cycloalkyl, unsubstituted or R ' substituted C1-C20 silylalkyl, unsubstituted or R ' substituted C6-C30 aryl, unsubstituted or R ' substituted C3-C30 heteroaryl, unsubstituted or R ' substituted C6-C30 arylamino, unsubstituted or R ' substituted C3-C30 heteroarylamino; r ' are each independently selected from any one or a combination of at least two of halogen, cyano, C1-C20 straight or branched chain alkyl, C3-C20 cycloalkyl, C1-C20 alkoxy, C1-C20 silylalkyl, C6-C30 aryloxy, C3-C30 heteroaryloxy, C6-C30 aryl, C3-C30 heteroaryl, C6-C30 arylamino and C3-C30 heteroarylamino, any adjacent two R ' are not connected or are connected through a chemical bond to form a ring, and each R ' is not connected or is connected through a chemical bond to form a ring with an adjacent ring structure.
  2. 2. The organic compound according to claim 1, wherein the organic compound has a structure as shown in formula II: wherein M 1 、Ar 1 、X 1 、X 2 、X 3 、X 4 has the same defined range as in formula I; Each X 5 、X 6 、X 7 、X 8 is independently selected from CR A1 or N; each Z 1 、Z 2 、Z 3 is independently selected from CR A2 or N; R A1 、R A2 is each independently selected from any of hydrogen, R X , substituted or unsubstituted C1-C20 straight or branched alkyl, substituted or unsubstituted C3-C20 cycloalkyl, substituted or unsubstituted C1-C20 silylalkyl, substituted or unsubstituted C6-C30 aryloxy, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C3-C30 heteroaryl, substituted or unsubstituted C6-C30 arylamino, substituted or unsubstituted C3-C30 heteroarylamino, substituted or unsubstituted C6-C30 arylthio; Any two adjacent R A1 are not connected or are connected through chemical bonds to form a ring, any two adjacent R A2 are not connected or are connected through chemical bonds to form a ring, R A1 、R A2 are not connected or are connected through chemical bonds to form a ring independently from the adjacent ring structure, and the substituent groups in R A1 、R A2 are not connected or are connected through chemical bonds to form a ring independently from the adjacent ring structure; At least one of R A1 、R A2 、R M and R B is R X .
  3. 3. The organic compound according to claim 2, wherein the organic compound has a structure represented by formula III-1 or formula III-2: wherein the dotted line represents a single bond or no connection; M 1 、X 1 、X 2 、X 3 、X 4 has the same defined range as in formula I; X 5 、X 6 、X 7 、X 8 、Z 1 、Z 2 、Z 3 has the same defined range as in formula II; Y 11 、Y 1 、Y 2 、Y 3 、Y 4 are each independently selected from CR B1 or N; R B1 is each independently selected from any of hydrogen, R X , substituted or unsubstituted C1-C20 straight or branched alkyl, substituted or unsubstituted C3-C20 cycloalkyl, substituted or unsubstituted C1-C20 silylalkyl, substituted or unsubstituted C6-C30 aryloxy, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C3-C30 heteroaryl, substituted or unsubstituted C6-C30 arylamino, substituted or unsubstituted C3-C30 heteroarylamino, substituted or unsubstituted C6-C30 arylthio; R B1 is not connected with the adjacent ring structures or is connected with the adjacent ring structures through chemical bonds to form a ring; At least one of R A1 、R A2 、R M and R B1 is R X .
  4. 4. An organic compound according to claim 3, wherein the C atom in any two of CR A1 and/or the C atom in any two of CR M in formula III-1 or formula III-2 is attached to R Y , and wherein R Y has the structure shown in formula b: wherein — represents the attachment site of the group; M 2 is selected from any one of O, S, NAr 3 or CR 11 R 12 ; Ar 3 is selected from any one of unsubstituted or R 'substituted C6-C30 aryl and unsubstituted or R' substituted C3-C30 heteroaryl, wherein Ar 3 is not connected with an adjacent ring structure or is connected with a chemical bond to form a ring; R 11 、R 12 is independently selected from any one of unsubstituted or R 'substituted C1-C20 straight-chain or branched alkyl, unsubstituted or R' substituted C3-C20 cycloalkyl, unsubstituted or R 'substituted C6-C30 aryl, unsubstituted or R' substituted C3-C30 heteroaryl, wherein R 11 、R 12 is not connected or connected through a chemical bond; u 1 、U 2 、U 3 、U 4 are each independently selected from CR 21 or N; R 21 is each independently selected from any of hydrogen, R X , cyano, unsubstituted or R ' substituted C1-C20 straight or branched alkyl, unsubstituted or R ' substituted C3-C20 cycloalkyl, unsubstituted or R ' substituted C1-C20 silylalkyl, unsubstituted or R ' substituted C6-C30 aryl, unsubstituted or R ' substituted C3-C30 heteroaryl, unsubstituted or R ' substituted C6-C30 arylamino, unsubstituted or R ' substituted C3-C30 heteroarylamino; r 21 is not connected with adjacent ring structures or is connected with the adjacent ring structures through chemical bonds to form a ring.
  5. 5. The organic compound according to claim 4, wherein the compound having a structure represented by formula III-1 comprises a compound having a structure represented by any one of formula IV-1, formula IV-2, formula IV-3, formula IV-4, and formula IV-5, and the compound having a structure represented by formula III-2 comprises a compound having a structure represented by formula IV-6 or formula IV-7: Wherein the dotted line represents a single bond or no linkage; M 1 、X 1 、X 2 、X 3 has the same defined as in formula I, X 5 、X 6 、X 7 、X 8 、Z 1 、Z 2 、Z 3 has the same defined as in formula II, Y 1 、Y 2 、Y 3 、Y 4 has the same defined as in formula III-1, Y 11 has the same defined as in formula III-2; M 2 、U 1 、U 2 、U 3 、U 4 has the same defined range as in formula b; Preferably, the organic compound comprises a compound having a structure shown in any one of formula IV-1, formula IV-2, formula IV-3 and formula IV-4.
  6. 6. An organic compound according to claim 3 or 5, wherein at least one of said X 5 、X 6 、X 7 、X 8 、Z 1 、Z 2 、Z 3 、Y 1 、Y 2 、Y 3 、Y 4 、Y 11 is CR X ; Preferably, at least one of the Z 1 、Z 2 、Z 3 is CR X ; More preferably, the Z 2 is CR X .
  7. 7. The organic compound according to claim 4 or 5, wherein each X 5 、X 6 、X 7 、X 8 is independently CR A1 and/or each X 1 、X 2 、X 3 is independently CR M ; Preferably, the X 5 、X 8 is CH, the X 6 、X 7 are each independently CR A1 ; Preferably, each R A1 、R M 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 C1-C10 silylalkyl, substituted or unsubstituted C6-C20 aryloxy, substituted or unsubstituted C6-C20 aryl, substituted or unsubstituted C3-C20 heteroaryl, substituted or unsubstituted C6-C20 arylamino, substituted or unsubstituted C3-C20 heteroarylamino, substituted or unsubstituted C6-C20 arylthio; preferably, each Z 1 、Z 2 、Z 3 is independently CR A2 ; Preferably, Z 1 、Z 3 is CH and Z 2 is CR A2 ; 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 C6-C20 aryl, substituted or unsubstituted C3-C20 heteroaryl, further preferably any one of hydrogen, R X , substituted or unsubstituted C1-C5 straight or branched alkyl, substituted or unsubstituted C3-C10 cycloalkyl, substituted or unsubstituted C6-C18 aryl, substituted or unsubstituted C3-C18 heteroaryl; Preferably, each of said Y 1 、Y 2 、Y 3 、Y 4 、Y 11 is independently selected from CR B1 ; Preferably, Y 1 、Y 3 、Y 4 、Y 11 is CH and Y 2 is CR B1 ; Preferably, the R B1 is selected from any one of hydrogen, R X , substituted or unsubstituted C1-C10 straight or branched chain alkyl, substituted or unsubstituted C3-C10 cycloalkyl, substituted or unsubstituted C1-C10 silylalkyl, substituted or unsubstituted C6-C20 aryl, substituted or unsubstituted C3-C20 heteroaryl, substituted or unsubstituted C6-C20 arylamino, substituted or unsubstituted C3-C20 heteroarylamino; Preferably, each of the U 1 、U 2 、U 3 、U 4 is independently CR 21 ; Preferably, each R 21 is independently selected from any one of hydrogen, R X , cyano, unsubstituted or R ' substituted C1-C10 straight or branched alkyl, unsubstituted or R ' substituted C3-C10 cycloalkyl, unsubstituted or R ' substituted C1-C10 silylalkyl, unsubstituted or R ' substituted C6-C20 aryl, unsubstituted or R ' substituted C3-C20 heteroaryl, unsubstituted or R ' substituted C6-C20 arylamino, unsubstituted or R ' substituted C3-C20 heteroarylamino, any adjacent two R 21 are not connected or are connected by a chemical bond to form a ring, and each R 21 is independently not connected or is connected by a chemical bond to an adjacent ring structure to form a ring.
  8. 8. The organic compound according to claim 1, 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, formula V-6, formula V-7, formula V-8: Wherein the dotted line represents a single bond or no linkage, M 1 has the same defined range as in formula I; R A1 、R A2 、R M 、R B1 、R 21 each independently represents unsubstituted, monosubstituted to maximally permissible substitution; R A1 、R A2 、R M 、R B1 is independently selected from any one of hydrogen, R X , substituted or unsubstituted C1-C20 straight or branched alkyl, substituted or unsubstituted C3-C20 cycloalkyl, substituted or unsubstituted C1-C20 silylalkyl, substituted or unsubstituted C6-C30 aryloxy, substituted or unsubstituted C6-C30 aryl, substituted or unsubstituted C3-C30 heteroaryl, substituted or unsubstituted C6-C30 arylamino, substituted or unsubstituted C3-C30 heteroarylamino, substituted or unsubstituted C6-C30 arylthio, R A1 、R A2 、R M 、R B1 is independently not connected to or linked to an adjacent ring structure to form a ring by a chemical bond, and the substituted substituents in R A1 、R A2 、R M 、R B1 are independently not connected to an adjacent ring structure to or linked to form a ring by a chemical bond; R 21 is independently selected from any one of hydrogen, R X , cyano, C1-C20 straight-chain or branched alkyl which is not substituted or substituted by R ', C3-C20 cycloalkyl which is not substituted or substituted by R', C1-C20 silylalkyl which is not substituted or substituted by R ', C6-C30 aryl which is not substituted or substituted by R', C3-C30 heteroaryl which is not substituted or substituted by R ', C6-C30 arylamino which is not substituted or substituted by R', C3-C30 heteroarylamino which is not substituted or is linked by chemical bond to form a ring between any two adjacent R 21 , R 21 is not linked or linked by chemical bond to form a ring with the adjacent ring structure; Each M 2 is independently selected from any one of O, S, NAr 3 or CR 11 R 12 ; Ar 3 is selected from any one of unsubstituted or R 'substituted C6-C30 aryl and unsubstituted or R' substituted C3-C30 heteroaryl, wherein Ar 3 is not connected with an adjacent ring structure or is connected with a chemical bond to form a ring; R 11 、R 12 is independently selected from any one of unsubstituted or R 'substituted C1-C20 straight-chain or branched alkyl, unsubstituted or R' substituted C3-C20 cycloalkyl, unsubstituted or R 'substituted C6-C30 aryl, unsubstituted or R' substituted C3-C30 heteroaryl, wherein R 11 、R 12 is not connected or connected through a chemical bond; At least one of the R A1 、R A2 、R M 、R B1 、R 21 is R X , preferably at least one of the R A2 、R B1 、R 21 is R X , more preferably at least one of the R A2 is R X .
  9. 9. The organic compound of claim 8, wherein each R A1 、R M is independently selected from any of hydrogen, substituted or unsubstituted C1-C10 straight or branched alkyl, substituted or unsubstituted C3-C10 cycloalkyl, substituted or unsubstituted C1-C10 silylalkyl, substituted or unsubstituted C6-C20 aryloxy, substituted or unsubstituted C6-C20 aryl, substituted or unsubstituted C3-C20 heteroaryl, substituted or unsubstituted C6-C20 arylamino, substituted or unsubstituted C3-C20 heteroarylamino, substituted or unsubstituted C6-C20 arylthio; Preferably, each R A1 、R M is independently selected from any of hydrogen, substituted or unsubstituted C1-C5 straight or branched alkyl, substituted or unsubstituted C3-C10 cycloalkyl, substituted or unsubstituted C1-C10 silylalkyl, substituted or unsubstituted C6-C18 aryloxy, substituted or unsubstituted C6-C18 aryl, substituted or unsubstituted C3-C18 heteroaryl, substituted or unsubstituted C6-C18 arylamino, substituted or unsubstituted C3-C18 heteroarylamino, substituted or unsubstituted C6-C18 arylthio; 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 C6-C20 aryl, substituted or unsubstituted C3-C20 heteroaryl, further preferably any one of hydrogen, R X , substituted or unsubstituted C1-C5 straight or branched alkyl, substituted or unsubstituted C6-C18 aryl, substituted or unsubstituted C3-C18 heteroaryl; preferably, each R B1 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 C1-C10 silylalkyl, substituted or unsubstituted C6-C20 aryl, substituted or unsubstituted C3-C20 heteroaryl, substituted or unsubstituted C6-C20 arylamino, substituted or unsubstituted C3-C20 heteroarylamino, further preferably any one of hydrogen, R X , substituted or unsubstituted C1-C5 straight or branched alkyl, substituted or unsubstituted C3-C10 cycloalkyl, substituted or unsubstituted C1-C10 silylalkyl, substituted or unsubstituted C6-C18 aryl, substituted or unsubstituted C3-C18 heteroaryl, substituted or unsubstituted C6-C18 arylamino, and substituted or unsubstituted C3-C18 heteroarylamino; Preferably, each R 21 is independently selected from any one of hydrogen, R X , cyano, unsubstituted or R ' substituted C1-C10 straight or branched alkyl, unsubstituted or R ' substituted C3-C10 cycloalkyl, unsubstituted or R ' substituted C1-C10 silylalkyl, unsubstituted or R ' substituted C6-C20 aryl, unsubstituted or R ' substituted C3-C20 heteroaryl, unsubstituted or R ' substituted C6-C20 arylamino, unsubstituted or R ' substituted C3-C20 heteroarylamino.
  10. 10. The organic compound according to any one of claims 1 to 9, wherein L is selected from any one of unsubstituted or R C1 -substituted C6-C15 arylene; Each R C1 is independently selected from any one of cyano, unsubstituted or R ' substituted C1-C20 straight or branched alkyl, unsubstituted or R ' substituted C3-C20 cycloalkyl, unsubstituted or R ' substituted C6-C30 arylamino, unsubstituted or R ' substituted C3-C30 heteroarylamino, unsubstituted or R ' substituted C6-C10 aryl; preferably, L is selected from any one of the following groups, unsubstituted or R C1 substituted: wherein — represents the attachment site of the group; preferably, each R C1 is independently selected from any one of cyano, unsubstituted or R ' substituted C1-C10 straight or branched alkyl, unsubstituted or R ' substituted C3-C10 cycloalkyl, unsubstituted or R ' substituted C6-C10 aryl; Preferably, ar 2 is selected from any one of unsubstituted or R D1 substituted C14-C40 fused aryl; Each R D1 is independently selected from any one of cyano, unsubstituted or R ' substituted C1-C20 straight or branched alkyl, unsubstituted or R ' substituted C3-C20 cycloalkyl, unsubstituted or R ' substituted C1-C20 silylalkyl, unsubstituted or R ' substituted C6-C30 aryl, unsubstituted or R ' substituted C3-C30 heteroaryl, unsubstituted or R ' substituted C6-C30 arylamino, unsubstituted or R ' substituted C3-C30 heteroarylamino; Preferably, ar 2 is selected from any one of the following groups, unsubstituted or R D1 substituted: wherein — represents the attachment site of the group; Preferably, ar 2 is selected from any one of the following groups, unsubstituted or R D1 substituted: wherein — represents the attachment site of the group; Preferably, each R D1 is independently selected from any one of cyano, unsubstituted or R 'substituted C1-C5 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, unsubstituted or R 'substituted C6-C20 arylamino, unsubstituted or R' substituted C3-C20 heteroarylamino.
  11. 11. An organic compound according to any one of claims 1 to 10, wherein R X is selected from any one of the following groups: wherein — represents the attachment site of the group; R C1 is independently selected from any one of cyano, unsubstituted or R 'substituted C1-C5 straight-chain or branched alkyl, unsubstituted or R' substituted C3-C10 cycloalkyl; R D1 is each independently selected from any one of cyano, unsubstituted or R ' substituted C3-C10 cycloalkyl, unsubstituted or R ' substituted C6-C12 aryl, unsubstituted or R ' substituted C3-C12 heteroaryl, unsubstituted or R ' substituted C6-C18 arylamino, unsubstituted or R ' substituted C3-C18 heteroarylamino; m 1 is selected from an integer of 0 to 4, m 2 is selected from an integer of 0 to 6, m 3 is selected from an integer of 0 to 8, n 1 is selected from an integer of 0 to 9, n 2 is selected from an integer of 0 to 5, n 3 is selected from an integer of 0 to 7, and n 4 is selected from an integer of 0 to 6; Preferably, each R ' is independently selected from any one or a combination of at least two of halogen, cyano, C1-C5 straight or branched chain alkyl, C3-C10 cycloalkyl, C1-C10 alkoxy, C1-C10 silylalkyl, C6-C20 aryloxy, C3-C20 heteroaryloxy, C6-C20 aryl, C3-C20 heteroaryl, C6-C20 arylamino, C3-C20 heteroarylamino, any adjacent two R ' are not connected or are connected by a chemical bond to form a ring, and each R ' is independently not connected or is connected by a chemical bond to an adjacent ring structure to form a ring.
  12. 12. The organic compound according to claim 1, wherein the organic compound has a structure as shown in any one of M1 to M133:
  13. 13. use of an organic compound according to any one of claims 1 to 12, 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 the organic electroluminescent device.
  14. 14. 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 1-12; Preferably, the organic layer comprises a light-emitting layer comprising at least one organic compound according to any one of claims 1 to 12; 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 1-12; 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.
  15. 15. A display device, characterized in that the display device comprises the organic electroluminescent device according to claim 14.

Description

Organic compound and application thereof Technical Field The invention belongs to the technical field of organic electroluminescent materials, and particularly relates to an organic compound and application thereof. Background In recent years, electroluminescent devices (e.g., organic light emitting diodes, OLEDs) based on organic materials have become increasingly popular, and the inherent flexibility of organic materials compared to electroluminescent devices based on inorganic materials has made them very suitable for the manufacture of flexible, thin electroluminescent devices, which can be used to design and produce aesthetically pleasing and cool screens, displays, lighting devices, etc. as desired, with incomparable advantages of inorganic materials. 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. With the rapid development of information technology, display technology faces higher requirements, for example, meeting the color gamut standard BT-2020 of image signals in 4K and 8K ages, and the CIEy of green light is 0.797, so that the color gamut coverage rate is remarkably increased. At present, a luminescent material adopting a narrow half-peak width emission spectrum is one of important means for realizing high light color purity, and particularly in the current commercialized OLED materials, a green luminescent material adopts a phosphorescent material with wider half-peak width and stronger shoulder at a long wavelength, so that the requirements of high efficiency and excellent color purity are difficult to meet at the same time. In recent years, scientists develop a thermally activated delayed fluorescence material (TADF) which has both a theoretical exciton utilization ratio of 100% and a narrow emission spectrum, and is expected to realize the requirement of high color purity of BT-2020 as an OLED luminescent material, and can ensure higher efficiency. However, the materials have serious efficiency roll-off under high brightness, and the service life of the devices is short, so that the materials can not reach the standards of mass production and use. In order to solve the problem, scientists put forward a super-fluorescence strategy, namely, energy transfer is carried out to transfer excitation state energy of a TADF material or a phosphorescent material to a narrow-spectrum fluorescent material to emit light, so that not only is the exciton utilization rate of 100% theoretically realized, but also a narrow emission spectrum is obtained, and an OLED device with good efficiency, long service life and high color purity is expected to be obtained. In addition, phosphorescent materials are typically based on transition metals, such as iridium, platinum, etc., which are very expensive in many OLED materials due to their generally low abundance. Therefore, reducing the amount of phosphorescent material is critical to reduce the cost of the OLED. Therefore, the development of a wider variety of organic narrow spectrum luminescent materials with better electroluminescent properties is one of the important means to achieve the above-mentioned desire, and is the focus of research in the field. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide an organic compound and application thereof, and the organic compound has narrow spectral characteristics through the design of a molecular structure, is used for an organic electroluminescent device, and can effectively improve the luminous efficiency, prolong the service life and improve the color purity of the organic compound. To achieve the purpose, the invention adopts the following technical scheme: In a first aspect, the present invention provides an organic compound having a structure according to formula I: in formula I, M 1 is O or S. In the formula I, the ring A and the ring E are respectively and independently selected from any one of an unsubstituted C6-C60 aromatic ring or an R A substituted C3-C60 heteroaromatic ring or an unsubstituted C A substituted C3-C60 heteroaromatic ring, and the heteroatom in the C3-C60 heteroaromatic ring is selected from at least one of N, O, S. Ar 1 is selected from any one of unsubstituted or R B substituted C6-C60 aryl and unsubstituted or R B 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. In the present invention, "Ar 1 is not connected to the adjacent ring structure" means that Ar 1 is connected to the N atom only by a single bond, "Ar 1 is connected to the adjacent ring structure by a chemical bond to form a ring" means that Ar 1 is connected to the adjacent ring (e.g., ring) in addition to the N atom by a chemical bondThe dotted lines represent condensed bonds) are connected by chemical bonds to form a co