Morphological stabilization of polymer-coated electrodes by electrochemical cross-linking

Abstract

Electrochemical oxidation of N-phenyl-pyrazoline, N-alkylated carbazole and N-alkylated phenylhydrazone derived linear polymer films results in the formation of polymer-bound benzidine-type dimer species. The presence of these dimers, which are formed from the anodically generated cation radical precursors, was detected by the electrochemical and spectroscopic changes in the films following oxidation. In addition, we show that formation of this dimeric species must occur between non-nearest neighbors since the resulting electroactive polymer films are insoluble, with the electrochemically induced (dimer) cross-links leading to stabilization of film morphology. © 1982.