Triarylamine compound and application thereof in organic electroluminescent display device

Abstract

The invention discloses a triarylated amine compound and application thereof in an organic electroluminescent display device, the compound has a chemical structure shown in the specification, X11-X14 are independently selected from hydrogen, deuterium, halogen atoms, substituted or unsubstituted alkyl, alkoxy or alkylthio with the carbon atom number of 1-20, X15 is substituted or unsubstituted aryl or heteroaryl with the ring forming carbon atom number of 8-24 and the ring number of 4; A2 and A3 are respectively and independently unsubstituted or halogen atom, cyano, alkyl with 1-10 carbon atoms, alkoxy, alkylthio, aryl or heteroaryl with 5-24 ring-forming carbon atoms substituted by alkyl, alkoxy, alkylthio and fluoroalkyl. The triarylamine compound has the advantages of large steric hindrance and high mobility, meets the performance requirements as a hole transport material, and can improve the luminous efficiency and stability when being applied to an organic electroluminescent display device.

Description

technical field [0001] The invention belongs to the field of organic electroluminescent materials, in particular to triarylamine compounds and their application in organic electroluminescent display devices. Background technique [0002] At present, the red and green hole transport layer materials for organic electroluminescent display devices (OLED) are mainly composed of aromatic monoamines, which have the advantage of easy adjustment of energy levels, and can be adjusted according to the different requirements of the device for energy levels. However, monoarylamines have low mobility due to too few hole-transporting functional sites. The structure of the conjugated fused ring compound has high mobility characteristics, and the fused ring can also form intramolecular hindrance. If the conjugated fused ring segment is introduced at the appropriate position of the triarylamine, not only can the triarylamine compound have high mobility, The energy level is in line with the r...

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Problems solved by technology

[0002] At present, the red and green hole transport layer materials for organic electroluminescent display devices (OLED) are mainly composed of aromatic monoamines, which have the advantage of easy adjustment of energy levels, and can be adjusted according to the different requirements of the device for energy levels. design, but monoarylamines have low mobility due to too few hole-transporting functional sites

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