Conjugated blue organic electroluminescence polymer and synthesis method thereof

Abstract

The invention relates to a conjugated blue organic electroluminescence polymer and a synthesis method thereof, which belong to the technical field of organic polymer semiconductor light-emitting materials. The conjugated blue organic electroluminescence polymer has the structure disclosed in the specification, wherein -(Ar)n- is the main chain of the blue organic electroluminescence polymer, Ar is phenyl, fluorenyl and carbazolyl, R is alkyl, ether and ester, R' is the alkyl and the ester which can be identical or different, and n is the mean degree of polymerization of the polymer, the scope of which is 2-10000. The product has excellent luminous performance and oxidation resistance, antioxidant does not need to be added in the processing process, the problem of phase separation does not exist, and simultaneously, the antioxidant lateral group has small influence on the luminosity and the heat stability of the main chain so as to improve the environment tolerance. The invention also provides a synthesis method of the conjugated blue organic electroluminescence polymer.

Description

technical field The invention relates to a conjugated organic electroluminescence polymer and a synthesis method thereof, belonging to the technical field of organic light-emitting displays. Background technique Since 1990, when Friend R.H. of the University of Cambridge in the United Kingdom first developed the organic electroluminescence (OLED) of polyvinylphenylene structure, it has triggered an upsurge in the study of organic flat panel display materials and devices in the fields of materials science and information technology. The red, green, and blue primary colors of luminescent materials required for the preparation of full-color light-emitting devices are the least mature for blue light materials. At present, fluorene polymers are used as the main material to emit relatively pure blue light, but their lifespan is lower than that of red, green, and blue. The material is the shortest. The reason is mainly because the blue light material has a short wavelength and hig...

AI Technical Summary

Problems solved by technology

Aiming at the problem of easy phase separation and poor stability of external antioxidants in the existing technology, we use chemical bonding to attach sulfur-containing antioxidants to the side groups of light-emitting polymers, so that the antioxidant groups can be evenly dispersed in the In the light-emitting polymer, it will not diffuse out of the polymer itself, and its uniformity and stability are enhanced. The antioxidant uses the reaction of sulfur atoms to meet oxygen or peroxide groups to form sulfoxides to consume oxygen and protect the light. The polymer backbone is not oxidized

Images