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:
datchanee.p@cmu.ac).
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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.
