MODIFICATION OF ELECTRODES WITH PORPHYRIN-FUNCTIONALIZED CONDUCTIVE POLYMERS

A new thiophene derivative has been synthesised, in which a porphyrin moiety has been inserted in the beta position of the heterocyclic ring . The homopolymer deriving from this monomer has been prepared by chem ical oxidation and subsequently deposited on a glassy carbon electrode , while the copolymer with dithiophene has been generated electrochemi cally directly on the electrode surface. Both materials have been char acterised by SEM, and by UV-visible and IR spectroscopies. The electro chemical behaviour of the relevant coatings has been studied and the c omplexing ability of the polymer chains has been investigated with res pect to the Ni(II) ion. (C) 1998 Elsevier Science S.A. All rights rese rved.