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Electrochromism and conductivity of sulfonated polyaniline films in propylene carbonate

Daiane Fossatti, Wilson Jose da Silva, Regina Maria Queiroz de Mello

Abstract


In this work we compare the spectroelectrochemical response of electrochemically deposited sulfonated polyaniline and polyaniline films. The electrochromic performance of SPAN is slightly superior to that of PANI, showing faster coloring and bleaching and slightly higher electrochromic efficiency than PANI. Furthermore, submitting SPAN to successive voltammetry scans in LiClO4/propylene carbonate constitutes a simple method to improve SPAN conductivity by a factor 20.

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DOI: http://dx.doi.org/10.13171/mjc.1.4.2011.29.12.16

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