General Information
    • ISSN: 2010-0221 (Print)
    • Abbreviated Title: Int. J. Chem. Eng. Appl.
    • Frequency: Biannually
    • DOI: 10.18178/IJCEA
    • Editor-in-Chief: Prof. Dr. Shen-Ming Chen
    • Executive Editor: Jennifer X. Zeng
    • Abstracting/ Indexing:  CNKI, Google Scholar, EBSCO, ProQuest,  Crossref, etc.
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Prof. Dr. Shen-Ming Chen
National Taipei University of Technology, Taiwan

IJCEA 2014 Vol.5(2): 176-180 ISSN: 2010-0221
DOI: 10.7763/IJCEA.2014.V5.373

Electrochromic Performances of Conductive Polyaniline Copolymer

N. Thummarungsan and D. Pattavarakorn

Abstract—The conductive polyaniline copolymer films were fabricated and their electrochromic performances were investigated. The polyaniline copolymer was synthesized through an oxidative coupling polymerization and doped with sulfuric acid dopant. Copolymer thin films were then prepared via solution casting on ITO plastic substrate. The electrochromic properties were examined using 1.0 M sulfuric acid as electrolyte. The electrochromic performances of copolymer films were further determined by measuring electrochromic photographs and UV absorption spectra. The results showed that polyaniline copolymer was successfully synthesized in which its chemical structure was confirmed by FTIR. In addition, the color of copolymer thin film turned from green to blue under the applied potential. It was also found that the copolymer films exhibited highest optical contrast at the applied potential equal to 3 volts. Moreover, the optical contrast and response time trend to depend on acid dopant concentration and applied potential.

Index Terms—Electrochromic, conductive polymer, doping, polyaniline.

The authors are with the Chiang Mai University, Faculty of science, Department of Industrial Chemistry, Chiang Mai 50200, Thailand (e-mail:


Cite:N. Thummarungsan and D. Pattavarakorn, "Electrochromic Performances of Conductive Polyaniline Copolymer," International Journal of Chemical Engineering and Applications vol. 5, no. 2 pp. 176-180, 2014.

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