STUDIES OF POLY(O-AMINOPHENOL) BY QUARTZ-CRYSTAL IMPEDANCE MEASUREMENTS

Conducting poly(o-aminophenol) films deposited on Pt electrodes were s tudied by quartz crystal impedance. The number of molecules of water p er poly(o-aminophenol) equivalent in its oxidized form was determined to be approximately seven. As reduction proceeds, swelling of the film takes place but it still exhibits rigid features which make it suitab le to analyse by the quartz crystal microbalance. Results show a sligh tly more rigid polymer at higher concentration of electrolyte and it w as established that about 60% of the polymer film is electrochemically oxidized. (C) 1998 Elsevier Science S.A. All rights reserved.