Effect of the conditions of electropolymerization on the electrocatalytic response of non-metalledpoly-tetraaminophthalocyanine-modified electrodes toward the reduction of oxygen
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: | BOLETIN DE LA SOCIEDAD CHILENA DE QUIMICA |
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 |