CHARACTERIZATION AND INVESTIGATION OF THE ELECTROCATALYTIC PROPERTIESOF POLY-P-PHENYLENE MODIFIED ELECTRODES

Poly-p-phenylene was polymerized electrochemically on the surface of p latinum and glassy carbon electrodes. The polymer film differs both in morphology and in effects of modification when a comparison is made b etween the modified platinum and modified glassy carbon surfaces. The modified electrodes are shown to decrease the overpotential for oxidat ion of such biologically important compounds as NADH, acetaminophen, c atechol, p-aminophenol, and ascorbic acid. In addition to the decrease in overpotential, there is also an increase in the current for the ox idative process. The electrodes are stable chemically and electrochemi cally both in aqueous solution and in mixtures containing methanol, ma king them excellent candidates for sensing and/or electrocatalytic app lications.