Effect of the conditions of electropolymerization on the electrocatalytic response of non-metalledpoly-tetraaminophthalocyanine-modified electrodes toward the reduction of oxygen

Ramirez G.; Trollund, E; Canales J.C.; Canales M.J.; armijo, F; Aguirre, M. J.

Abstract

The macrocyclic ligand, tetraaminophthalocyanine, was electropolymerized on a glassy carbon electrode by continuously potentiodynamic scans, using two different solvents, dimethylsulfoxide and dimethylformamide. In the first case, an over-oxidation can takes place, which partially destroy the film and inhibits its electrocatalytic activity for the reduction of oxygen compared to the polymer grown in dimethylformamide.To avoid this over-oxidation, two possible ways can be used: to achieve the electropolymerization during a lower number of potentiodynamic scans or using a positive potential limit shifted to more negative potentials. If a narrow potential interval is used, the electrocatalytic behavior of the polymer is similar to that obtained in dimethylformamide. However, if a wide potential interval is used but only during few potentiodynamic scans, it is possible to obtain a polymer with a new redox signal that presents a very interesting electrocatalytic activity for the reduction of molecular oxygen.

Más información

Título según SCOPUS: Effect of the conditions of electropolymerization on the electrocatalytic response of non-metalledpoly-tetraaminophthalocyanine-modified electrodes toward the reduction of oxygen
Título de la Revista: Boletín de la Sociedad Chilena de Química
Volumen: 46
Número: 3
Editorial: Sociedad Chilena de Química
Fecha de publicación: 2001
Página de inicio: 247
Página final: 255
Idioma: English
URL: http://www.scopus.com/inward/record.url?eid=2-s2.0-23044531071&partnerID=q2rCbXpz
Notas: SCOPUS