A novel metal-free amorphous room-temperature phosphorescent polymer without conjugation

• 来源期刊: 中国科学:化学（英文版）
• 年，卷（期）: 2019,（4）
• 页码范围: 430-433
• 页数: 4页
• 语种: 英文

摘要

Room-temperature phosphorescence (RTP) has attracted much attention due to its potential applications in the fields of biological imaging,chemical sensors and so forth.Particularly,amorphous metal-free RTP materials show special advantages of low cost and good processability.In addition,non-conjugated polymers have seldom been reported as phosphorescent materials.In this work,a novel non-conjugated amorphous metal-free copolymer composed of brominated olefins and acrylamide was prepared in a facile way,which could engender blue-purple RTP emission.Polymers with different kinds of brominated olefins and different ratios of two monomers have been investigated with the purpose of researching the composition/property relationship that may affect the RTP properties.This unique phenomenon could be due to the clustering of carbonyl and amino units caused molecular interaction,and the heavy-atom effect enhanced intersystem crossing.Meantime,the hydrogen bonding in the system enhanced the conformation rigidification to reduce the non-radiative decay.This work provided a delicate way to construct non-conjugated metal-free RTP materials and supplied a new insight into the development of RTP materials.