Search

CN-122010943-A - Nitrogen-containing organic compound and organic light-emitting device

CN122010943ACN 122010943 ACN122010943 ACN 122010943ACN-122010943-A

Abstract

The application belongs to the technical field of materials, and particularly relates to a nitrogen-containing organic compound and an organic light-emitting device. The application is based on a large conjugated spirofluorene indoloaccridine structure, introduces a cycloalkyl unit with a branched configuration, and constructs a mother nucleus structure with a stable three-dimensional framework. The design can effectively inhibit intermolecular accumulation, is favorable for balancing injection and transmission rates of holes and electrons in the device, and thus improves exciton formation probability and luminous efficiency.

Inventors

  • MU GUANGYUAN
  • ZHUANG SHAOQING
  • PENG YILONG
  • WANG LIN

Assignees

  • 湖北尚赛光电材料有限公司

Dates

Publication Date
20260512
Application Date
20251216

Claims (10)

  1. 1. A nitrogen-containing organic compound, characterized by a structural formula represented by formula one: Wherein X is selected from M is a natural number of 0-2, L 1 is selected from single bond or arylene with 6-12 carbon atoms, each R 1 is independently selected from cyano, substituted or unsubstituted aryl with 6-30 carbon atoms, substituted or unsubstituted arylamine with 6-30 carbon atoms, substituted or unsubstituted heteroaryl with 6-30 carbon atoms; The substituents of each R 1 are the same or different and are each independently selected from cyano, alkyl having 1 to 10 carbon atoms, phenyl, or a combination thereof.
  2. 2. A nitrogen-containing organic compound according to claim 1, characterized in that: The aryl with the carbon number of 6-30 is selected from monocyclic or polycyclic aryl with 1-3 benzene ring structures; The arylamine group with the carbon number of 6-30 is represented by NR 2 R 3 , and R 2 、R 3 is selected from monocyclic or polycyclic aryl groups with 1-3 benzene ring structures or polycyclic heteroaryl groups with 1-3 benzene ring structures; The heteroaryl group with the carbon number of 6-30 is selected from polycyclic heteroaryl groups with 1-3 benzene ring structures.
  3. 3. A nitrogen-containing organic compound according to claim 2, characterized in that: Benzene ring structures in the polycyclic aryl are connected through single bonds, condensed connection or are bonded with alkyl of C 1 -C 4 through single bonds; the polycyclic heteroaryl is selected from polycyclic heteroaryl formed by meta-position substitution of six-membered oxazine ring groups by monocyclic aryl, polycyclic aryl or polycyclic heteroaryl with 1-3 benzene ring structures, or polycyclic heteroaryl formed by condensed connection of 1-3 benzene ring structures and five-membered heteroaryl ring groups.
  4. 4. A nitrogen-containing organic compound according to claim 1, wherein L 1 is a monocyclic or polycyclic arylene group having 1 to 3 benzene ring structures.
  5. 5. A nitrogen-containing organic compound according to any one of claims 2 to 3, wherein said monocyclic aryl group having 1 benzene ring structure is selected from phenyl groups, and said polycyclic aryl group having 2 to 3 benzene ring structures is selected from biphenyl groups, terphenyl groups, naphthyl groups, anthryl groups, phenanthryl groups, fluorenyl groups.
  6. 6. A nitrogen-containing organic compound according to claim 3, wherein the polycyclic heteroaryl group having a five-membered heteroaromatic ring group as the center has 1 to 2 benzene ring structures selected from benzofuranyl, benzothienyl, benzindolyl, dibenzofuranyl, dibenzothienyl and carbazolyl.
  7. 7. The nitrogen-containing organic compound according to claim 1, wherein the compound represented by formula one is any one of the following formulas 1-1 to 1-170: / 。
  8. 8. an organic light-emitting device comprising a cathode, an anode, and an organic material layer disposed between the cathode and the anode, wherein the organic material layer comprises the nitrogen-containing organic compound according to any one of claims 1 to 7.
  9. 9. An organic light-emitting device according to claim 8, wherein the organic material layer comprises any one, two or more of a hole injection layer, a hole transport layer, an electron injection layer, an electron blocking layer, a hole blocking layer, a light-emitting layer, and a light-emitting auxiliary layer.
  10. 10. An organic light-emitting device according to claim 9, wherein the organic material layer containing a nitrogen-containing organic compound is a light-emitting layer, an electron-transporting layer, or a hole-transporting layer.

Description

Nitrogen-containing organic compound and organic light-emitting device Technical Field The invention belongs to the technical field of materials, and particularly relates to a nitrogen-containing organic compound and an organic light-emitting device. Background Currently, with the development of electronic technology and the advancement of material science, the application range of electronic components for realizing electroluminescence or photoelectric conversion is becoming wider and wider. An organic electroluminescent device (OLED) generally includes a cathode and an anode disposed opposite each other, and a functional layer disposed between the cathode and the anode. The functional layer is composed of a plurality of organic or inorganic film layers, and generally includes an organic light emitting layer, a hole transporting layer, an electron transporting layer, and the like. When voltage is applied to the cathode and the anode, the two electrodes generate an electric field, electrons at the cathode side move to the electroluminescent layer under the action of the electric field, holes at the anode side also move to the luminescent layer, the electrons and the holes are combined in the electroluminescent layer to form excitons, and the excitons are in an excited state to release energy outwards, so that the electroluminescent layer emits light outwards. In the conventional organic electroluminescent device, the most important problems are the lifetime and efficiency, and along with the large area of the display, the driving voltage is also improved, and the luminous efficiency and the current efficiency are also required to be improved. Accordingly, there is a need to continue to develop new materials to further improve the performance of organic electroluminescent devices. Disclosure of Invention In order to solve the defects in the prior art, the invention provides a nitrogen-containing organic compound and an organic light-emitting device. The technical scheme provided by the invention is as follows: in order to solve the technical problems, the invention provides a nitrogenous organic compound and an organic light-emitting device, Has a structural formula shown in formula I: Wherein X is selected from M is a natural number of 0-2, L 1 is selected from single bond, arylene with 6-12 carbon atoms, each R 1 is independently selected from cyano, substituted or unsubstituted aryl with 6-30 carbon atoms, substituted or unsubstituted arylamine with 6-30 carbon atoms, substituted or unsubstituted heteroaryl with 6-30 carbon atoms; each R 1 is the same or different and is independently selected from cyano, alkyl having 1-10 carbon atoms, phenyl, or a combination thereof M is further selected from 0,1, 2. The arylene group of L 1 in the present invention refers to the general term for divalent radicals left after two hydrogen atoms are removed from the aromatic nucleus carbon of an aromatic hydrocarbon molecule. L 1 can be a monocyclic arylene, a polycyclic arylene, or a fused ring arylene. Preferably from 6 to 14 carbon atoms, most preferably from 6 to 12 carbon atoms. The monocyclic arylene group includes, but is not limited to, phenylene and the like, the polycyclic arylene group includes, but is not limited to, biphenylene and the like, and the fused ring arylene group includes, but is not limited to, naphthylene, anthracylene and the like. The L 1 is selected from single bond, phenylene, polycyclic arylene with 2-3 phenyl groups. More preferably, the L 1 is selected from substituted or unsubstituted phenylene, substituted or unsubstituted biphenylene, or substituted or unsubstituted naphthylene. The "substitution" means that a hydrogen atom on a compound group is replaced by other atoms or groups, and the substitution position is any position, and the "unsubstituted" means that the hydrogen atom on the compound group is not replaced by other atoms or groups. In the present application, the alkyl group having 1 to 10 carbon atoms may include a straight chain alkyl group having 1 to 10 carbon atoms and a branched alkyl group having 3 to 10 carbon atoms. The number of carbon atoms of the alkyl group may be, for example, 1,2, 3, 4, 5, 6, 7, 8, 9, 10, and specific examples of the alkyl group include, but are not limited to, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, neopentyl, n-hexyl, and the like. Specifically, the aryl group with the carbon number of 6-30 is selected from monocyclic or polycyclic aryl groups with 1-3 benzene ring structures. In the present application, the aryl group having 6 to 30 carbon atoms may be a monocyclic aryl group, a polycyclic aryl group or a condensed ring aryl group, preferably having 6 to 30 carbon atoms, more preferably having 6 to 22 carbon atoms, still more preferably having 6 to 18 carbon atoms, further preferably having 6 to 14 carbon atoms, and most preferably having 6 to 12 carbon atoms. The monocyclic aryl group refers t