Effect of the conditions of electropolymerization on the electrocatalytic response of non-metalledpoly-tetraaminophthalocyanine-modified electrodes toward the reduction of oxygen
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.
|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|
|Editorial:||Sociedad Chilena de Química|
|Fecha de publicación:||2001|
|Página de inicio:||247|