Multichromic polymers containing alternating bithiophenes derivatives and 4-cyanotriphenylamine unit and their application for electrochromic devices

作者：Yang, Xiujuan; Wang, Min; Zhao, Jinsheng^*; Cui, Chuansheng; Wang, Shuhao; Liu, Jifeng

来源：Journal of Electroanalytical Chemistry, 2014, 714: 1-10.

DOI：10.1016/j.jelechem.2013.12.017

• 4-Diphenylaminobenzonitrile
• Electrochemistry
• Cyclic voltammetry
• Electrochromism
• Spectroelectrochemistry
• Electrochromic devices

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 (Delta T%), fast response time and excellent cyclic voltammetry stability; hence they are promising candidates for various applications.

• 出版日期2014-2-1
• 单位聊城大学