Electroanalytical analysis of glassy carbon electrode modified with COOH- and NO2-functionalized polyspyrophosphazenes
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Fecha
2017
Profesor/a Guía
Facultad/escuela
Idioma
en
Título de la revista
ISSN de la revista
Título del volumen
Editor
Sociedad Chilena de Química
Nombre de Curso
Licencia CC
Licencia CC
Resumen
Glassy carbon electrode modified with COOH- and NO2-functionalized polyspyrophosphazenes were used to study the redox process of a electroactive probe (ferrocene) in non-aqueous electrolyte. The electrochemical behavior of polyphosphazenes substituted with COOH and NO2 groups has been studied using cyclic voltammetry. Their blocking properties depend on the substituent group and on the substitution/nitration degree. The oxoreduction of the couple Fc/Fc+ occurs with rapid redox kinetic at the modified glassy carbon electrode with high nitration degree NO2-functionalized polyspyrophosphazene. The polymers were immobilized on the glassy carbon surface at different concentrations to study surface charge density effect. In this report were studied the reproducibility, repeatability and stability of the modified electrodes.
Notas
Indexación: Scopus.
Palabras clave
Blocking effect, Cyclic voltammetry, Ferrocene, Functionalized polyphosphazenes, Modified electrode
Citación
Journal of the Chilean Chemical Society. Volume 62, Issue 2, June 2017, Pages 3515-3518