Effect of Thionyl Chloride on the Electrochemical Response of Polyaniline Films in Propylene Carbonate Solutions

1 January 1999

journal article
Published by The Electrochemical Society in Electrochemical and Solid-State Letters

Vol. 1 (2) , 63-65
https://doi.org/10.1149/1.1390637

Abstract

The effect of thionyl chloride on the dehydration of polyaniline films prepared in aqueous solutions was analyzed. These films were immersed in propylene carbonate solutions containing different amounts of thionyl chloride. It was observed that the products from the reaction between water and thionyl chloride promote an increase in the protonation level of the polymeric film, as confirmed by the analysis of cyclic voltammograms and the visible spectra. With the increase of the immersion time in propylene carbonate solutions containing thionyl chloride an increase in the absorbance peak at is observed. This response is related to the presence of radical cations, and the increase in this absorbance peak reflects an increase in the content of the radical cations in the film. ©1998 The Electrochemical Society

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