含喹啉单元新型聚酰亚胺的合成及其电致变色性能研究
首发时间:2017-05-11
摘要:4,4'-二氨基-4''-(喹啉-8-氧基)三苯胺(DAQTPA)与均苯四甲酸二酐(PMDA)缩聚成电致变色芳香族聚酰亚胺(PI-a)。空气氛围中,PI-a在450 ℃之前表现出良好的热稳定性。UV-vis光谱测试表明PI-a薄膜的最大吸收带位于332 nm。由实验结果及相应公式可得其最高占据分子轨道(HOMO)和最低未占据分子轨道(LUMO)能级分别为-5.19 eV和-2.42 eV。光电化学测试的结果体现出了这些PI-a稳定可逆的电致变色性能,其中,光透射率变化(ΔT)约为43%,着色效率(CE; η)约为74 cm2 C-1。
For information in English, please click here
Synthesis of New Polyimide with Quinoline Units and Its Electrochromic Properties
Abstract:Herein, an electrochromic aromatic polyimide (PI-a) was synthesized from 4,4'-diamino-4''-(quinolin-8-yloxy) triphenylamine (DAQTPA) with pyromellitic dianhydride (PMDA). This PI-a showed good thermostability below 450 C even in air atmosphere. The maximum UV-vis absorption band of PI-a located at 332 nm for solid films. The highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy levels of the PI-awas calculated from test as -5.19 eV and -2.42 eV, respectively. This PI-a performed stable reversible electrochromic properties with optical transmittance change (ΔT) around 43% and coloration efficiency (CE; η) around 74 cm2 C-1.
Keywords: polyimide electrochromic triphenylamine electrochemistry redox
论文图表:
引用
No.4732407119573014****
同行评议
共计0人参与
勘误表
含喹啉单元新型聚酰亚胺的合成及其电致变色性能研究
评论
全部评论0/1000