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CN-122010856-A - Triazinyl compound, OLED (organic light emitting diode) with triazinyl compound and organic light emitting device

CN122010856ACN 122010856 ACN122010856 ACN 122010856ACN-122010856-A

Abstract

The invention relates to the technical field of organic photoelectric material preparation, in particular to a triazinyl compound, an OLED (organic light emitting diode) with the triazinyl compound and an organic light emitting device. The compound takes a triazine structure as a core, forms fixed substitution and combination with fluorenyl on one side chain by aryl and alkyl, so that the compound has excellent luminous efficiency and better thermal stability, and meanwhile, the triazine compound provided by the invention acts on a device, so that an organic light-emitting device has lower driving voltage and keeps the stability of the voltage, the luminous efficiency is improved, and the service life is obviously prolonged.

Inventors

  • ZHANG LEI
  • LI HONGEN
  • ZHANG HUAXING
  • WU KONGWU
  • YANG XIWEN
  • ZHAO XIAOYU

Assignees

  • 浙江华显光电科技有限公司

Dates

Publication Date
20260512
Application Date
20260414

Claims (12)

  1. 1. A triazinyl compound, characterized by having the structure of formula I: ; In the formula I, R 1 、R 2 is selected from hydrogen, deuterium, C1-C24 alkyl and C6-C30 aryl, R 3 is selected from hydrogen, deuterium, C1-C24 alkyl and C6-C30 aryl, L 1 is selected from single bond and C6-C30 arylene, ar 1 、Ar 2 is selected from cyano substituted or unsubstituted C6-C30 aryl, and hydrogen atoms in the structure shown in the formula I can be partially or completely deuterated.
  2. 2. The triazinyl compound according to claim 1, wherein in formula I, R 1 、R 2 are each selected from the group consisting of hydrogen, deuterium, methyl, ethyl, propyl, butyl, phenyl, R 3 are each independently selected from the group consisting of hydrogen, deuterium, methyl, ethyl, propyl, butyl, phenyl, L 1 are each independently selected from the group consisting of single bond, phenyl, naphthyl, biphenyl, ar 1 、Ar 2 are each independently selected from the group consisting of cyano substituted or unsubstituted phenyl, biphenyl, naphthyl.
  3. 3. The triazinyl compound according to claim 1, wherein said formula I is selected from the structures of formula a or formula B: ; Wherein the substitution of R 1 、R 2 、L 1 、Ar 1 、Ar 2 is as defined in claim 1.
  4. 4. The triazinyl compound according to claim 1, wherein said formula I is selected from the structures of formula 1 or formula 2: ; Wherein the substitution of R 3 、L 1 、Ar 1 、Ar 2 is as defined in claim 1.
  5. 5. The triazinyl compound according to claim 1, wherein said formula I is represented by any one of the structures of formula a-1, a-2, B-1 or B-2: ; Wherein the substitution of L 1 、Ar 1 、Ar 2 is as defined in claim 1.
  6. 6. The triazinyl compound according to claim 1, wherein CN represents cyano group, selected from any one of the chemical structures shown below: 。
  7. 7. a composition comprising a triazinyl compound according to any one of claims 1 to 6.
  8. 8. A formulation comprising a triazinyl compound according to any one of claims 1-6 and at least one solvent.
  9. 9. Use of a triazinyl compound according to any one of claims 1-6 for the preparation of an organic electroluminescent device.
  10. 10. An organic electroluminescent device, characterized in that the organic electroluminescent device comprises: A substrate layer; A first electrode over the substrate; An organic light emitting functional layer over the first electrode; a second electrode over the organic light emitting functional layer; the organic light-emitting functional layer comprising a triazine-based compound according to any one of claims 1 to 6.
  11. 11. The organic electroluminescent device according to claim 10, wherein at least one of the organic luminescent functional layers is an electron transporting layer or a hole blocking layer, the electron transporting layer or the hole blocking layer comprising a triazine-based compound according to any one of claims 1 to 6.
  12. 12. A display or lighting device, characterized in that the device comprises an organic electroluminescent device as claimed in any one of claims 10-11.

Description

Triazinyl compound, OLED (organic light emitting diode) with triazinyl compound and organic light emitting device Technical Field The invention relates to the technical field of organic photoelectric material preparation, in particular to a triazinyl compound, an OLED (organic light emitting diode) with the triazinyl compound and an organic light emitting device. Background Organic Light Emitting Diodes (OLEDs) are also known as organic electroluminescent devices. In organic electroluminescent devices, a cathode, an anode, a light emitting layer, an electron transport layer, and other organic functional material layers are generally included. By applying a voltage to the organic electroluminescent device, holes are respectively injected from the anode and electrons from the cathode into the light emitting layer, and the injected holes and electrons are recombined to form excitons, thereby causing light emission, which is capable of converting electric energy into light energy through the organic light emitting material. Because the carrier migration of most material holes is not matched with the carrier migration speed of electrons, the two carriers are likely not to be compounded in the light-emitting layer, so that the photoelectric performance of the device is reduced, meanwhile, the leakage current is increased, the device heats, and the service life of the device is reduced. It is common to add a layer of hole blocking material to prevent holes from reaching the electron transport layer. However, the existing hole blocking material is not excellent in technical effect applied to devices, is relatively common in light-emitting efficiency and service life performance of the devices, and even if various materials are combined and matched differently, the problem of low light-emitting efficiency performance still exists in the display technology, so that further practicability of the technology is seriously affected. Accordingly, there is a continuous effort to develop an organic light emitting device having low voltage driving, high luminance and long lifetime, and to find a suitable OLED photoelectric functional material for an OLED device to solve the above problems. Disclosure of Invention In order to solve the technical problems, the invention provides a triazinyl compound, an OLED (organic light emitting diode) with the triazinyl compound and a display or lighting device. The triarylamine compound takes a triazine structure as a core, and aryl groups and alkyl groups are combined to form side chain collocations, and the triazine compound is used in an organic electroluminescent device, so that the device has higher efficiency and longer service life. The invention is realized by the following technical scheme: The invention provides a triazinyl compound, which has a structure shown in a formula I: ; In the formula I, R 1、R2 is selected from hydrogen, deuterium, C1-C24 alkyl and C6-C30 aryl, R 3 is selected from hydrogen, deuterium, C1-C24 alkyl and C6-C30 aryl, L 1 is selected from single bond and C6-C30 arylene, ar 1、Ar2 is selected from cyano substituted or unsubstituted C6-C30 aryl, and hydrogen atoms in the structure shown in the formula I can be partially or completely deuterated. Preferably, in the formula I, R 1、R2 is selected from hydrogen, deuterium, methyl, ethyl, propyl, butyl and phenyl, which are the same or different. Further preferred, in the formula I, R 1、R2 is not simultaneously selected from phenyl. Preferably, in the formula I, R 3 is independently selected from hydrogen, deuterium, methyl, ethyl, propyl, butyl or phenyl. Preferably, in the formula I, L 1 is independently selected from single bond, phenyl, naphthyl and biphenyl. Preferably, in the formula I, ar 1、Ar2 is independently selected from cyano substituted or unsubstituted phenyl, biphenyl and naphthyl. Preferably, the formula I is selected from the structures of formula a or formula B: ; Wherein the substitution of R 1、R2、L1、Ar1、Ar2 is as defined above. Preferably, the formula I is selected from the structures of formula 1 or formula 2: ; Wherein the substitution of R 3、L1、Ar1、Ar2 is as defined above. More preferably, the formula I is represented by any one of the structures of formula A-1, A-2, B-1 or B-2: ; Wherein the substitution of L 1、Ar1、Ar2 is as defined above. According to one or more embodiments, the present invention provides a triazinyl compound selected from any one of the chemical structures shown below, CN representing cyano: 。 The invention also provides an application of the triazinyl compound in preparing an organic electroluminescent device. The invention also provides an organic electroluminescent device, which comprises: A substrate layer; A first electrode over the substrate; An organic light emitting functional layer over the first electrode; a second electrode over the organic light emitting functional layer; the organic light-emitting functional layer comprises a triazinyl compound shown in the f