SciELO - Scientific Electronic Library Online

 
vol.62 número2CHARACTERIZATION OF AMORPHOUS ALLOY Co87Nb46B15ELIMINATION OF INDUSTRIAL TEXTILE DYE BY ELECTROCOAGULATION USING IRON ELECTRODES índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

  • En proceso de indezaciónCitado por Google
  • No hay articulos similaresSimilares en SciELO
  • En proceso de indezaciónSimilares en Google

Compartir


Journal of the Chilean Chemical Society

versión On-line ISSN 0717-9707

Resumen

VALENZUELA, MARIA LUISA; CISTERNAS, REGINA; JARA-ULLOA, PAOLA  y  RODRIGUEZ, LISSETTE. ELECTROANALYTICAL ANALYSIS OF GLASSY CARBON ELECTRODE MODIFIED WITH COOH- AND NO2- FUNCTIONALIZED POLYSPYROPHOSPHAZENES. J. Chil. Chem. Soc. [online]. 2017, vol.62, n.2, pp.3515-3518. ISSN 0717-9707.  http://dx.doi.org/10.4067/S0717-97072017000200018.

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.

Palabras clave : functionalized polyphosphazenes; modified electrode; cyclic voltammetry; blocking effect; ferrocene.

        · texto en Inglés     · Inglés ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons