Electrochemical response of poly(vinylferrocenium)‐coated Pt electrods to some anions in aqueous media

Abstract

Abstract The electrooxidation behavior of iodide, thiocyanate, and cyanide on poly(vinylferrocenium)‐coated Pt electrodes was investigated using cyclic voltammetry and differential pulse anodic stripping voltammetry. IR and UV spectroscopic data, and differential scanning calorimetry (DSC) measurements indicated that these anions were incorporated in the polymeric structure as a result of anion exchange. Anodic stripping of these anions from the film was carried out after the initial preconcentration. Cyanide uptake was found to cause an irreversible change in the physical properties of the film, whereas thiocyanate and iodide are merely incorporated in the film structure as counter ions.