Multichromic polymers containing alternating bithiophenes derivatives and 4-cyanotriphenylamine unit and their application for electrochromic devices
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- 作者：Xiujuan Yang ; Min Wang ; Jinsheng Zhao ; Chuansheng Cui ; Shuhao Wang ; Jifeng Liu
- 关键词：4-Diphenylaminobenzonitrile ; Electrochemistry ; Cyclic voltammetry ; Electrochromism ; Spectroelectrochemistry ; Electrochromic devices
- 刊名：Journal of Electroanalytical Chemistry
- 出版年：1 February, 2014
- 年：2014
- 卷：714-715
- 期：Complete
- 页码：1-10
- 全文大小：2861 K
文摘
Two structural properties related monomers 4-di(4-(2-thienyl)phenyl)aminobenzonitrile (M1) and 4-di(4-(2-(3,4-ethylenedioxythiophene))phenyl)aminobenzonitrile (M2) were successfully synthesized. Polymer P1 and P2 were characterized successfully, which were performed by cyclic voltammetry (CV), UV-vis spectroscopy and scanning electron microscopy (SEM). Spectroelectrochemical analysis revealed that the polymers film had good electrochromic properties and exhibited multi-electrochromic behavior. The polymer films showed reversible electrochemical oxidation accompanied by strong color changes with a high contrast ratio, rapid switching time and high coloration efficiency. Besides, it is interesting to find that the P1/PEDOT device and P2/PEDOT device displayed two colors (yellow, dark-blue and green, blue) belonging to primary colors, respectively. The corresponding devices based on P1 or P2 and PEDOT showed reasonable optical contrast (螖T%), fast response time and excellent cyclic voltammetry stability; hence they are promising candidates for various applications.