Multicolored electrochromic copolymer based on 1,4-di(thiophen-3-yl)benzene and 3,4-ethylenedioxythiophene

作者：Ouyang, Mi; Wang, Genghao; Zhang, Yujian; Hua, Cheng; Zhang, Cheng^*

来源：Journal of Electroanalytical Chemistry, 2011, 653(1-2): 21-26.

DOI：10.1016/j.jelechem.2011.01.014

• Multicolored
• Electrochemical polymerization
• Conjugated polymer
• Electrochromism

Copolymer of 1,4-di(thiophen-3-yl)benzene (DTB) with 3,4-ethylenedioxy-thiophene (EDOT) was electrochemically synthesized and characterized. Resulting copolymer film presents excellent electrochromic properties. At the neutral state, lambda(max) value due to the pi-pi transition is found to be 496 nm and energy gap ( g) is calculated as 1.92 eV. Besides, the copolymer film possesses four various colors (red, yellow, green and blue) under different potentials. Otherwise, the electrochromic switching results show that the copolymer film has fast switching time (0.8 s at 746 nm) and high optical contrast (59% at 1100 nm). Cyclic voltammetry study reveals that the copolymer film has excellent stability.

• 出版日期2011-4-1
• 单位浙江工业大学