Electroanalytical analysis of glassy carbon electrode modified with COOH- and NO2-functionalized polyspyrophosphazenes

Maria Luisa Valenzuela, Regina Cisternas, Paola Jara-Ulloa, Lissette Rodriguez

Resultado de la investigación: Article

1 Cita (Scopus)

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.

Idioma originalEnglish
Páginas (desde-hasta)3515-3518
Número de páginas4
PublicaciónJournal of the Chilean Chemical Society
Volumen62
N.º2
DOI
EstadoPublished - 1 jun 2017

Huella dactilar

Glassy carbon
Nitration
Electrodes
Surface charge
Charge density
Electrolytes
Cyclic voltammetry
Polymers
Substitution reactions
Kinetics
Oxidation-Reduction

ASJC Scopus subject areas

  • Chemistry(all)

Citar esto

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title = "Electroanalytical analysis of glassy carbon electrode modified with COOH- and NO2-functionalized polyspyrophosphazenes",
abstract = "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.",
keywords = "Blocking effect, Cyclic voltammetry, Ferrocene, Functionalized polyphosphazenes, Modified electrode",
author = "Valenzuela, {Maria Luisa} and Regina Cisternas and Paola Jara-Ulloa and Lissette Rodriguez",
year = "2017",
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Electroanalytical analysis of glassy carbon electrode modified with COOH- and NO2-functionalized polyspyrophosphazenes. / Valenzuela, Maria Luisa; Cisternas, Regina; Jara-Ulloa, Paola; Rodriguez, Lissette.

En: Journal of the Chilean Chemical Society, Vol. 62, N.º 2, 01.06.2017, p. 3515-3518.

Resultado de la investigación: Article

TY - JOUR

T1 - Electroanalytical analysis of glassy carbon electrode modified with COOH- and NO2-functionalized polyspyrophosphazenes

AU - Valenzuela, Maria Luisa

AU - Cisternas, Regina

AU - Jara-Ulloa, Paola

AU - Rodriguez, Lissette

PY - 2017/6/1

Y1 - 2017/6/1

N2 - 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.

AB - 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.

KW - Blocking effect

KW - Cyclic voltammetry

KW - Ferrocene

KW - Functionalized polyphosphazenes

KW - Modified electrode

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U2 - 10.4067/S0717-97072017000200018

DO - 10.4067/S0717-97072017000200018

M3 - Article

AN - SCOPUS:85027031916

VL - 62

SP - 3515

EP - 3518

JO - Journal of the Chilean Chemical Society

JF - Journal of the Chilean Chemical Society

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