Electrochemical properties of polyaniline doped with poly(styrenesulfonic acid)

Polyaniline was electrochemically synthesized in aqueous 0.2 N poly(styrenesulfonic acid) solution. The electrochemical properties, such as redox kinetics with respect to the pH of the electrolytic medium and the effect of film thickness of polyaniline doped with poly(styrenesulfonic acid), were inv...

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Bibliographic Details
Published in:Synthetic metals 1992-10, Vol.52 (3), p.319-328
Main Authors: Kang, Yongku, Lee, Myong-Hoon, Rhee, Suh Bong
Format: Article
Language:English
Subjects:
Applied sciences
Electrical, magnetic and optical properties
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
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Summary:Polyaniline was electrochemically synthesized in aqueous 0.2 N poly(styrenesulfonic acid) solution. The electrochemical properties, such as redox kinetics with respect to the pH of the electrolytic medium and the effect of film thickness of polyaniline doped with poly(styrenesulfonic acid), were investigated by cyclic voltammetry and coulometry. Polyaniline doped with poly(styrenesulfonic acid) showed a reversible redox reaction and the rate of redox reaction was faster than that of polyaniline doped with inorganic acid even at relatively high pH (pH ∼ 4). Also, the rate of redox reaction was not affected by the thickness of the film. From cyclovoltammetric and coulometric results it was concluded that these desirable electrochemical properties are due to the ionic conductivity and proton transfer reaction of poly(styrenesulfonic acid)-doped polyaniline film.
ISSN:0379-6779
1879-3290
DOI:10.1016/0379-6779(92)90031-D