CN-121248618-B - Compound containing pyran quinoxaline structure and application thereof

Abstract

The invention relates to a compound containing a pyran quinoxaline structure and application thereof, belonging to the technical field of organic electroluminescent materials. The structural formula of the pyran quinoxaline structure-containing compound is as follows: Ar is selected from deuterated or non-deuterated aromatic hydrocarbon group with 6-30 carbon atoms and deuterated or non-deuterated heteroaryl with 5-30 carbon atoms, and hetero atoms in the heteroaryl are selected from N, S, O. The compound containing the pyran quinoxaline structure is applied to an organic electroluminescent device. The compound containing the pyran quinoxaline structure is used as a main body material and an electron transmission material of an organic electroluminescent device, can limit carriers to flow in a luminescent layer, provides better device performance, and comprises lower driving voltage, higher current efficiency and prolonged service life.

Inventors

• QU JIANGLEI
• ZHOU XUZHONG
• LIU KAI

Assignees

• 烟台九目化学股份有限公司

Dates

Publication Date

20260505

Application Date

20251208

Claims (8)

1. 1. A pyran quinoxaline structure-containing compound, characterized in that the pyran quinoxaline structure-containing compound has the structural formula: ; Ar is selected from any one of the following groups: 。
2. 2. a pyran quinoxaline structure containing compound, wherein the pyran quinoxaline structure containing compound is selected from the group consisting of: 。
3. 3. Use of a compound containing a pyran quinoxaline structure according to any one of claims 1-2, wherein said compound containing a pyran quinoxaline structure is used in an organic electroluminescent device.
4. 4. The use of a pyran quinoxaline structure containing compound according to claim 3, wherein said organic electroluminescent device comprises an anode and a cathode, and an organic layer disposed between the anode and the cathode, said pyran quinoxaline structure containing compound being applied in said organic layer.
5. 5. The use of a compound having a pyran quinoxaline structure according to claim 4, wherein said organic layer comprises at least a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer and an electron injection layer.
6. 6. The use of a compound containing a pyran quinoxaline structure according to claim 5, wherein the material of said light emitting layer comprises a host material comprising at least one of said compounds containing a pyran quinoxaline structure and a guest material.
7. 7. The use of a pyran quinoxaline structure containing compound according to claim 6, wherein said guest material is a phosphorescent dopant which is a transition metal containing complex.
8. 8. The use of a compound containing a pyran quinoxaline structure according to claim 5, wherein said electron transport layer comprises at least one of said compounds containing a pyran quinoxaline structure.

Description

Compound containing pyran quinoxaline structure and application thereof Technical Field The invention relates to a compound containing a pyran quinoxaline structure and application thereof, belonging to the technical field of organic electroluminescent materials. Background Since 2000, OLEDs were known as third generation display technologies, and have received great attention from the industry for their superior performance that is not comparable to other display technologies. The rapid development of information science and technology makes the requirements of people on information display devices higher and higher, especially high-quality images, namely high resolution, high contrast, high response speed, wide viewing angle, portability, namely ultra-thin, ultra-light and low power consumption, become the development direction of information display in the future, and the OLED just meets the various requirements. The OLED is used as an electroluminescent material with different luminescence mechanisms, is a luminescence phenomenon generated under the action of an electric field, and is a luminescence process for directly converting electric energy into light energy. Compared with other display technologies, the OLED has the advantages of wide material selection range, high luminous brightness and efficiency, capability of realizing full-color display from blue light to red light in a spectrum region, wide viewing angle, low driving voltage, relatively simple manufacturing process and low cost, and simultaneously has the most characteristic of realizing flexible display. The OLED can meet the requirements of the current information age for higher performance and larger information capacity of the display device, so the development of higher performance OLED materials is imperative. Disclosure of Invention Aiming at the defects existing in the prior art, the invention provides a compound containing a pyran quinoxaline structure and application thereof, wherein the compound containing the pyran quinoxaline structure is used for an organic layer of an organic electroluminescent device, so that the luminous efficiency can be improved, and the service life of the device can be prolonged. The technical scheme for solving the technical problems is as follows, namely a compound containing a pyran quinoxaline structure, wherein the structural formula of the compound containing the pyran quinoxaline structure is as follows: ; Ar is selected from deuterated or non-deuterated aromatic hydrocarbon group with 6-30 carbon atoms and deuterated or non-deuterated heteroaryl with 5-30 carbon atoms, and hetero atoms in the heteroaryl are selected from N, S, O. Further, ar is selected from any one of phenyl, biphenyl, naphthyl, phenanthryl, triphenylene, fluoranthenyl, benzanthracenyl, terphenyl, pyrenyl, 9-dimethylfluorenyl, dibenzofuranyl, dibenzothienyl, N-phenylcarbazolyl, 9-diphenylfluorenyl, quinolinyl, 3, 5-diphenyltriazinyl, benzo 9, 9-dimethylfluorenyl, deuterated carbazolyl and isoquinolinyl. Further, ar is selected from any one of the following groups: 。 Further, the pyranquinoxaline structure-containing compound is selected from the following compounds: 。 the invention also discloses application of the pyran quinoxaline structure-containing compound in an organic electroluminescent device. Further, the organic electroluminescent device includes an anode and a cathode, and an organic layer disposed between the anode and the cathode, and the pyran quinoxaline structure-containing compound is applied to the organic layer. Further, the organic layer at least comprises a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer and an electron injection layer. Further, the material of the light emitting layer includes a host material and a guest material, and the host material includes at least one of the pyran quinoxaline structure-containing compounds. Further, the guest material is a phosphorescent dopant, and the phosphorescent dopant is a complex containing a transition metal. Preferably, the phosphorescent dopant is a complex of Ir or a complex of Pt. Further, the electron transport layer contains at least one of the pyran quinoxaline structure-containing compounds. The beneficial effects of the invention are as follows: the compound containing the pyran quinoxaline structure is used as a main body material and an electron transmission material of an organic electroluminescent device, can limit carriers to flow in a luminescent layer, provides better device performance, and comprises lower driving voltage, higher current efficiency and prolonged service life, so that the driving voltage of the device is lower than 3.70V, the current efficiency is not lower than 28Cd/A, and meanwhile, the improvement of the service life of the device is very obvious, and the compound has good application effect in OLED luminescent devices and good industrialization prospect. Drawings FIG. 1