An electrochemical impedance and spectroelectrochemical study of the polypyrrole-flavin composite electrode

Electrodes modified with polypyrrole-flavin mononucleotide composite film (PPy-FMN) have been studied by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and UV-visible spectro-electrochemistry with optically transparent electrodes (OTE). Flavin molecules, electrostatically trap...

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Detalles Bibliográficos
Autores principales:	Bonazzola, Cecilia, Calvo, Ernesto Julio
Publicado:	1998
Materias:	Cyclic voltammetry Dopant anions Electrochemical impedance spectroscopy Optically transparent electrodes Polypyrrole-flavin mononucleotide composite film UV-visible spectro-electrochemistry Aromatic polymers Chemical modification Electrostatics Molecular structure Nitrogen compounds Solutions Spectroscopy Flavin Polypyrrole Electrochemical electrodes
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15726657_v449_n1-2_p111_Bonazzola http://hdl.handle.net/20.500.12110/paper_15726657_v449_n1-2_p111_Bonazzola
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_15726657_v449_n1-2_p111_Bonazzola
record_format	dspace
spelling	paper:paper_15726657_v449_n1-2_p111_Bonazzola2023-06-08T16:24:44Z An electrochemical impedance and spectroelectrochemical study of the polypyrrole-flavin composite electrode Bonazzola, Cecilia Calvo, Ernesto Julio Cyclic voltammetry Dopant anions Electrochemical impedance spectroscopy Optically transparent electrodes Polypyrrole-flavin mononucleotide composite film UV-visible spectro-electrochemistry Aromatic polymers Chemical modification Cyclic voltammetry Electrostatics Molecular structure Nitrogen compounds Solutions Spectroscopy Flavin Optically transparent electrodes Polypyrrole Electrochemical electrodes Electrodes modified with polypyrrole-flavin mononucleotide composite film (PPy-FMN) have been studied by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and UV-visible spectro-electrochemistry with optically transparent electrodes (OTE). Flavin molecules, electrostatically trapped in the composite film, act as dopant anions and can be reduced chemically by reduced PPy0 or electrochemically with a conducting PPy backbone connecting them to the underlying electrode. Both the electrochemistry and the electronic spectra of FMN entrapped in the PPy film markedly differ from those of FMN in aqueous solutions. These differences arise from the interactions of flavin molecules in a rigid matrix and the possibility of both chemical reduction of FMN by reduced PPy0 and flavin electro-reduction in the host polymer matrix. © 1998 Elsevier Science S.A. All rights reserved. Fil:Bonazzola, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Calvo, E.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1998 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15726657_v449_n1-2_p111_Bonazzola http://hdl.handle.net/20.500.12110/paper_15726657_v449_n1-2_p111_Bonazzola
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Cyclic voltammetry Dopant anions Electrochemical impedance spectroscopy Optically transparent electrodes Polypyrrole-flavin mononucleotide composite film UV-visible spectro-electrochemistry Aromatic polymers Chemical modification Cyclic voltammetry Electrostatics Molecular structure Nitrogen compounds Solutions Spectroscopy Flavin Optically transparent electrodes Polypyrrole Electrochemical electrodes
spellingShingle	Cyclic voltammetry Dopant anions Electrochemical impedance spectroscopy Optically transparent electrodes Polypyrrole-flavin mononucleotide composite film UV-visible spectro-electrochemistry Aromatic polymers Chemical modification Cyclic voltammetry Electrostatics Molecular structure Nitrogen compounds Solutions Spectroscopy Flavin Optically transparent electrodes Polypyrrole Electrochemical electrodes Bonazzola, Cecilia Calvo, Ernesto Julio An electrochemical impedance and spectroelectrochemical study of the polypyrrole-flavin composite electrode
topic_facet	Cyclic voltammetry Dopant anions Electrochemical impedance spectroscopy Optically transparent electrodes Polypyrrole-flavin mononucleotide composite film UV-visible spectro-electrochemistry Aromatic polymers Chemical modification Cyclic voltammetry Electrostatics Molecular structure Nitrogen compounds Solutions Spectroscopy Flavin Optically transparent electrodes Polypyrrole Electrochemical electrodes
description	Electrodes modified with polypyrrole-flavin mononucleotide composite film (PPy-FMN) have been studied by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and UV-visible spectro-electrochemistry with optically transparent electrodes (OTE). Flavin molecules, electrostatically trapped in the composite film, act as dopant anions and can be reduced chemically by reduced PPy0 or electrochemically with a conducting PPy backbone connecting them to the underlying electrode. Both the electrochemistry and the electronic spectra of FMN entrapped in the PPy film markedly differ from those of FMN in aqueous solutions. These differences arise from the interactions of flavin molecules in a rigid matrix and the possibility of both chemical reduction of FMN by reduced PPy0 and flavin electro-reduction in the host polymer matrix. © 1998 Elsevier Science S.A. All rights reserved.
author	Bonazzola, Cecilia Calvo, Ernesto Julio
author_facet	Bonazzola, Cecilia Calvo, Ernesto Julio
author_sort	Bonazzola, Cecilia
title	An electrochemical impedance and spectroelectrochemical study of the polypyrrole-flavin composite electrode
title_short	An electrochemical impedance and spectroelectrochemical study of the polypyrrole-flavin composite electrode
title_full	An electrochemical impedance and spectroelectrochemical study of the polypyrrole-flavin composite electrode
title_fullStr	An electrochemical impedance and spectroelectrochemical study of the polypyrrole-flavin composite electrode
title_full_unstemmed	An electrochemical impedance and spectroelectrochemical study of the polypyrrole-flavin composite electrode
title_sort	electrochemical impedance and spectroelectrochemical study of the polypyrrole-flavin composite electrode
publishDate	1998
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15726657_v449_n1-2_p111_Bonazzola http://hdl.handle.net/20.500.12110/paper_15726657_v449_n1-2_p111_Bonazzola
work_keys_str_mv	AT bonazzolacecilia anelectrochemicalimpedanceandspectroelectrochemicalstudyofthepolypyrroleflavincompositeelectrode AT calvoernestojulio anelectrochemicalimpedanceandspectroelectrochemicalstudyofthepolypyrroleflavincompositeelectrode AT bonazzolacecilia electrochemicalimpedanceandspectroelectrochemicalstudyofthepolypyrroleflavincompositeelectrode AT calvoernestojulio electrochemicalimpedanceandspectroelectrochemicalstudyofthepolypyrroleflavincompositeelectrode
_version_	1768546647290150912

An electrochemical impedance and spectroelectrochemical study of the polypyrrole-flavin composite electrode

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