Effect of oxidation ratio of conducting polymer on potential stability of the conducting polymer-coated electrode in voltammetric cell for the ion transfer

Conducting polymer-coated electrodes have been studied as one of the most suitable solid electrodes in organic membrane for fabrication of all-solid ion-selective electrodes or the voltammetric devices for the ion transfer at the liquid-liquid interface. In the present work, we report that the partially oxidized conducting polymer-coated electrode—the 50% oxidized poly(3,4-ethylenedioxythiophene), PEDOT, -coated indium-tin oxide glass electrode, ITOE — has high potential stability, reproducibility of the potential and low susceptibility to current flowing in a hydrophobic organic phases such as 1,2-dichloroethane, DCE, and 2-nitrophenyloctylether, NPOE; potential drift in open circuit potential for 200 h in DCE and NPOE were