A poly(pyrrole‐copper(II) deuteroporphyrin) modified electrode

Abstract

A new copper deuteroporphyrin functionalized by two pyrrole groups has been synthesized. This complex was isolated and characterized by 1HNMR, UV-visible spectroscopy, mass spectrometry and electrochemistry. This functionalization has allowed the preparation of the first example of metallodeuteroporphyrin film by oxidative electropolymerization. The redox properties of the resulting modified electrode have been investigated by cyclic voltammetry. The voltammograms display the regular electroactivity of copper deuteroporphyrin as well as that related to the polypyrrole skeleton. Owing to its cross-linked structure this polymeric film exhibits a relatively good electrochemical stability. In addition, it appears that the electropolymerization yield is markedly better than those previously reported for pyrrole-substituted copper tetraphenylporphyrin. Preliminary experiments have demonstrated the possibility to use this kind of electrode material in aqueous media.