发色团
聚酰亚胺
材料科学
单体
二胺
透射率
化学工程
光电子学
高分子化学
光化学
图层(电子)
聚合物
纳米技术
复合材料
化学
工程类
作者
Chuanxiang Su,Pengjia Liu,Jingyu Yue,Hengjian Huan,Zebin Yang,Kai Yang,Haiquan Guo,Jianying Zhao
出处
期刊:Polymers
[MDPI AG]
日期:2022-10-10
卷期号:14 (19): 4242-4242
被引量:3
标识
DOI:10.3390/polym14194242
摘要
Colorless polyimides (CPIs) with outstanding mechanical properties are essential materials in the production of flexible display panels, foldable windows, and even spacecraft cockpits. This paper specifically elaborates that the Morkit unit, and azo and nitro chromophores are important factors contributing to yellow PI, together with the well-known charge transfer complex (CTC) theory. Three diamine monomers, two anhydrides monomers, and three blockers were used to inhibit chromophores formation and, thus, obtain CPI films. The cut-off wavelength was blue-shifts to 334 nm and the transmittance is improved to 98.9% in the UV–vis range. Mechanical and thermal properties of the CPI films are not reduced through coupling effects of the blockers. Therefore, the inhibition method of the Morkit units and chromophore groups is a promising process for preparing CPIs to be used as flexible display materials.
科研通智能强力驱动
Strongly Powered by AbleSci AI