Impedance Scanning QCM Studies of Aniline Electropolymerization in Aqueous Phosphoric Acid Solutions to Determine the Most Effective Acid Concentration

Poly(aniline) was synthesized by electrochemical oxidation from phosphoric acid at concentrations from 0.1 mol/L up to 7 mol/L in an electrochemical quartz crystal microbalance (EQCM) equipped cell in a three-electrode configuration. Deposition processes were monitored by a recently introduced fast impedance-scanning quartz crystal microbalance to determine the optimal concentration for most effective electropolymerization parameters.