Polymer Acid Doped Polyaniline Is Electrochemically Stable Beyond pH 9

We report the pH dependence of the electrochemical redox behavior of polyaniline (PANI) that is template synthesized with poly(2-acrylamido-2-methyl-1-propanesulfonic acid), PAAMPSA. Cyclic voltammetry and spectroelectrochemistry were used to assess the oxidation and protonation states of PANI−PAAMP...

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Bibliographic Details
Published inChemistry of materials Vol. 21; no. 2; pp. 280 - 286
Main Authors Tarver, Jacob, Yoo, Joung Eun, Dennes, T. Joseph, Schwartz, Jeffrey, Loo, Yueh-Lin
Format Journal Article
LanguageEnglish
Published American Chemical Society 27.01.2009
Subjects
Electrochemistry
Electronic Materials
Polymeric Materials
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Summary:We report the pH dependence of the electrochemical redox behavior of polyaniline (PANI) that is template synthesized with poly(2-acrylamido-2-methyl-1-propanesulfonic acid), PAAMPSA. Cyclic voltammetry and spectroelectrochemistry were used to assess the oxidation and protonation states of PANI−PAAMPSA. Stable and reversible pernigraniline−emeraldine−leucoemeraldine transitions extend beyond pH 7. Direct pernigraniline−leucoemeraldine transitions dominate in alkaline conditions; these transitions are stable and reversible between 7 and 10, extending the pH stability of PANI well beyond those previously reported.
ISSN:0897-4756
1520-5002
DOI:10.1021/cm802314h