Electron‐Transfer Rates on Chemically Modified Conducting Polypyrrole Film Electrodes

Abstract

A cyclic voltammetric study of the ferrocene redox reaction was used to evaluate the substituent effect in variouspara‐substituted poly‐N‐phenylpyrrole films used as electrodes. To determine the film electrode substituent effect on the ferrocene couple reaction, the heterogeneous standard rate constant values were determined. The observed changes in the film electron‐transport rate are the result of the structure monomer variation. Electronic interaction between the polypyrrole nucleus and the para substituents on the N‐phenyl ring affects the electron‐transfer rate of polymer electrodes.