Pyrene and fluorene copolymerized blue light materials with space structures

Abstract

The invention relates to pyrene and fluorene copolymerized blue light materials with space structures. The copolymerized blue light materials with space structures are obtained by reacting fluorenol with triphenylamine compounds. A molecule structural formula of the copolymerized blue light materials is shown in the specification.

Description

a technical field The invention belongs to the field of functional materials. Using the electrophilic substitution reaction of the aromatic ring, a pyrene-fluorene copolymerized blue light material with a novel spatial structure was prepared. Two background technology Fluorene-based blue-light materials have become one of the most important new-generation flat-panel display technologies and one of the core materials for white light primary colors due to their excellent photothermal stability and high fluorescence quantum efficiency, and are a hotspot in the research of optoelectronic information functional materials; Planar fused-ring aromatic hydrocarbons have strong π-electron delocalization energy and high fluorescence quantum efficiency, and emit deep blue light. Many literatures have introduced pyrene into polyfluorene-based electroluminescent blue light-emitting materials, trying to combine the thermal stability of fluorene with the high charge mobility and hole-condu...

AI Technical Summary

Problems solved by technology

But at the same time, it was found that pyrene has a strong monomer crystallization property and a relatively low melting point (~150°C). After introducing pyrene into polyfluorene, the pyrene unit tends to form molecular stacking, which often makes the material thin film fluorescence prone to excitogroup association. The emission of matter (long-wave emission) will eventually lead to the degradation of device performance

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