An Electrochromic Copolymer Based on Pyrrole and 3,4-Ethylenedioxythiophene Electrodeposited in Aqueous Micellar Solution

Abstract:

An electrochromic copolymer based on pyrrole and 3,4-ethylenedioxythiophene (EDOT) are electrodeposited on ITO electrode in aqueous micellar solution. The copolymer show blue grey in neutral state (-0.8V) and light blue in oxidized state(0.8V). The λmax of the copolymer in neutral state is 530nm and the onset energy for π-π* transition (Eg) is calculated to be 1.68eV by the onset wavelength. And successive cycle voltammagrams indicate that the incorporation of EDOT units into the Ppy improves the electrochemical stability of the copolymer films, which retains 89% of electroactivity after 500 cycles, the copolymer could be as a promising candidate material for electrochromic devices.

• Periodical: Advanced Materials Research (Volumes 562-564)
• Pages: 64-67
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.562-564.64
• Online since: August 2012
• Authors: Yi Jie Tao, Zhao Yang Zhang, Hai Feng Cheng, Wen Wei Zheng
• Keywords: Aqueous Micellar Solution, Copolymer, Electrochromism, Electropolymerization

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