On the pH Influence on Electrochemical Properties of Poly(pyrrole) and Poly(N-methylpyrrole)

The electrochemical behavior of poly(pyrrole) doped with chloride (PPy/Cl) and dodecylsulfate (PPy/DS) ions as well as of poly(N-methylpyrrole) doped with perchlorate anions (PMPy/ClO4) was studied in aqueous electrolyte (KCl) solutions (pH 0.5 to 7). The results indicate that the pH effect is dependent on polymer/dopant system properties, although in general the pH change mostly affects the polymer by the change of solution redox potential....