CN-119613387-B - Phenazine compound and application thereof

Abstract

The invention provides a phenazine compound and application thereof, and relates to the technical field of organic electroluminescent materials. The phenazine compound provided by the invention can be used as a hole transport material, so that the photoelectric property and service life of an OLED device can be effectively improved.

Inventors

• ZHANG PENG
• HE XUEHU
• ZHOU YONGMING
• ZHANG LEI
• MA CHAOQUAN
• YANG JIANJUN
• LI LUWEI
• TANG WENJING

Assignees

• 阜阳欣奕华新材料科技股份有限公司

Dates

Publication Date

20260508

Application Date

20241025

Claims (5)

1. 1. The phenazine compound is characterized by having a structure shown in a formula I: ; I is a kind of Wherein, the structure of A is B has the structure of The structures of A and B are the same; Ar 1 、Ar 2 is independently selected from phenyl, biphenyl or naphthyl; Each of Ar 3 、Ar 4 、Ar 5 、Ar 6 is independently selected from phenyl, biphenyl, or triphenylene, at least one of Ar 3 、Ar 4 is triphenylene, at least one of Ar 5 、Ar 6 is triphenylene, and Ar 3 is different from Ar 4 , and Ar 5 is different from Ar 6 ; Or Ar 3 、Ar 4 、Ar 5 、Ar 6 is independently selected from triphenylene or naphthyl, and Ar 3 is different from Ar 4 , and Ar 5 is different from Ar 6 ; ar 3 、Ar 4 is not linked; Ar 5 、Ar 6 is not linked; The hydrogen atoms in formula I may each independently be substituted with deuterium atoms, fluorine atoms, cyano groups, C 1 ~C 12 alkyl groups; The C 1 ~C 12 alkyl is selected from methyl, ethyl, propyl, isopropyl, butyl, tertiary butyl, pentyl, tert-pentyl or n-hexyl.
2. 2. The phenazine compound according to claim 1, wherein the phenazine compound comprises any one of the following compounds 65 to 68: 。
3. 3. use of the phenazine compound according to claim 1 or 2 as a hole transport material in an organic electroluminescent device.
4. 4. An organic electroluminescent device, characterized in that it comprises the phenazine compound according to claim 1 or 2.
5. 5. The organic electroluminescent device according to claim 4, wherein the organic electroluminescent device comprises a first electrode, a second electrode, and an organic layer disposed between the first electrode and the second electrode, the organic layer comprises a hole transport layer, and a material of the hole transport layer comprises the phenazine compound.

Description

Phenazine compound and application thereof Technical Field The invention belongs to the technical field of organic photoelectricity, and particularly relates to a phenazine compound and application thereof. Background The organic electroluminescent (OLED: organic Light Emission Diodes) device technology can be used for manufacturing novel display products and novel illumination products, is hopeful to replace the existing liquid crystal display and fluorescent lamp illumination, and has wide application prospect. The OLED light-emitting device is like a sandwich structure and comprises electrode material film layers and organic functional materials clamped between different electrode film layers, and various functional materials are mutually overlapped together according to purposes to jointly form the OLED light-emitting device. When voltage is applied to the electrodes at the two ends of the OLED light-emitting device serving as a current device and positive and negative charges in the organic layer functional material film layer act through an electric field, the positive and negative charges are further compounded in the light-emitting layer, and thus OLED electroluminescence is generated. At present, the OLED display technology has been applied to the fields of smart phones, tablet computers and the like, and further expands to the large-size application fields of televisions and the like, but compared with the actual product application requirements, the OLED display technology has the advantages that the luminous efficiency, the service life and the like of OLED devices are further improved. The current research on improving the performance of the OLED light-emitting device comprises the steps of reducing the driving voltage of the device, improving the light-emitting efficiency of the device, prolonging the service life of the device and the like. In order to realize the continuous improvement of the performance of the OLED device, not only the innovation of the structure and the manufacturing process of the OLED device is needed, but also the continuous research and innovation of the OLED photoelectric functional material are needed, and the OLED functional material with higher performance is created. The OLED photoelectric functional materials applied to OLED devices can be divided into two main categories in terms of application, namely charge injection transport materials and luminescent materials. Further, the charge injection transport material may be further classified into an electron injection transport material, an electron blocking material, a hole injection transport material, and a hole blocking material, and the light emitting material may be further classified into a host light emitting material and a doping material. In order to manufacture high-performance OLED light emitting devices, various organic functional materials are required to have good photoelectric properties, for example, as a charge transport material, good carrier mobility, high glass transition temperature, and the like, and as a host material of a light emitting layer, good bipolar properties, appropriate HOMO/LUMO energy levels, and the like are required. The OLED photoelectric functional material film layer forming the OLED device at least comprises more than two layers, the industrially applied OLED device structure comprises a plurality of film layers such as a hole injection layer, a hole transmission layer, an electron blocking layer, a luminescent layer, a hole blocking layer, an electron transmission layer, an electron injection layer and the like, that is to say, the photoelectric functional material applied to the OLED device at least comprises a hole injection material, a hole transmission material, a luminescent material, an electron transmission material and the like, and the material type and the collocation form have the characteristics of richness and diversity. In addition, for the collocation of OLED devices with different structures, the used photoelectric functional materials have stronger selectivity, and the performance of the same materials in the devices with different structures can be completely different. Therefore, according to the current industrial application requirements of the OLED device and the requirements of different functional film layers of the OLED device, the photoelectric characteristic requirements of the device are required to select more suitable OLED functional materials or material combinations with higher performance so as to realize the comprehensive characteristics of high efficiency, long service life and low voltage of the device. In view of the actual demands of the current OLEDs, the development of the current OLED materials is far from sufficient, and it is important to develop higher-performance organic functional materials in line with the requirements of panel manufacturing enterprises. Disclosure of Invention Aiming at the defects of the prior art, the inve