Abstract

Conducting polymer, as polypyrrole (PPy), has been prepared eletrochemically in aqueous solution containing Fe(CN) 6 3-/4- as supporting electrolyte. The redox couple (Fe(CN) 6 3-/4- in the PPy film acts like a probe to monitor the doping-dedoping behaviour of anions and cations from/to the electrolyte solution. A novel method for measuring the ion exchange selectivity coefficient of a conducting polymer film by cyclic voltammetry is proposed

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