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

Franz Wudy, Tanja Schedlbauer, Christoph Stock and Heiner J. Gores*

University of Regensburg, Institute for Theoretical and Physical Chemistry, Workgroup Electrochemistry and Electrolytes, 93053 Regensburg, Germany * Corresponding author: E-mail:

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.

Keywords: Impedance scanning quartz crystal microbalance, EQCM, poly(aniline), electrodeposition, H3PO4