Electrochemical behaviour of polypyrrole film polymerized in indigo carmine solution

摘要: Abstract Electrochemical studies have been conducted to characterize polypyrrole film prepared in indigo carmine solution, PPy(IC). The PPy(IC) was found be formed via an adsorbed layer of IC on the substrate electrode surface. No obvious nucleation process observed during deposition. electrochemical processes are mediated by entrapped film. It that redox potential is dependent pH solution range 0–9, and a stable cyclic voltammogram obtained at values lower than 7. In alkaline medium, however, loses its response quickly upon cycling resulting cation perm-selective membrane. membrane with bulky multi-charged dopant cationic sensitivity but nevertheless rather non-selective cations.