On the pH dependence of electroactivity of poly(methylene blue) films

Autores
Pfaffen, Maria Valeria del Valle; Ortiz, Patricia Ines; Córdoba de Torresi, Susana I.; Torresi, Roberto M.
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The electrochemical behavior of poly(methylene blue) on different electrodes has been investigated by electrochemical quartz crystal microbalance and in situ spectrophotometric measurements coupled to cyclic voltammetry. Polymeric films were obtained potentiodynamically and the charge transport mechanism was analyzed. The electrochemical results show that polymer electroactivity depends not only on pH but also on the substrate. Charge compensation changes with both pH and the size of the anions showing a transition in the pH range of polymer pKa. It was demonstrated by spectroelectrochemical experiments that the electroactivity of the film depends on the radical/radical cation equilibrium. The potentials where the most electroactive species are formed have been determined.
Fil: Pfaffen, Maria Valeria del Valle. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Ortiz, Patricia Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Córdoba de Torresi, Susana I.. Universidade de Sao Paulo; Brasil
Fil: Torresi, Roberto M.. Universidade de Sao Paulo; Brasil
Materia
Poly(Methylene Blue)
Quartz Crystal Microbalance
Spectroelectrochemistry
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/76037
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/76037
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling On the pH dependence of electroactivity of poly(methylene blue) filmsPfaffen, Maria Valeria del ValleOrtiz, Patricia InesCórdoba de Torresi, Susana I.Torresi, Roberto M.Poly(Methylene Blue)Quartz Crystal MicrobalanceSpectroelectrochemistryhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The electrochemical behavior of poly(methylene blue) on different electrodes has been investigated by electrochemical quartz crystal microbalance and in situ spectrophotometric measurements coupled to cyclic voltammetry. Polymeric films were obtained potentiodynamically and the charge transport mechanism was analyzed. The electrochemical results show that polymer electroactivity depends not only on pH but also on the substrate. Charge compensation changes with both pH and the size of the anions showing a transition in the pH range of polymer pKa. It was demonstrated by spectroelectrochemical experiments that the electroactivity of the film depends on the radical/radical cation equilibrium. The potentials where the most electroactive species are formed have been determined.Fil: Pfaffen, Maria Valeria del Valle. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Ortiz, Patricia Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Córdoba de Torresi, Susana I.. Universidade de Sao Paulo; BrasilFil: Torresi, Roberto M.. Universidade de Sao Paulo; BrasilPergamon-Elsevier Science Ltd2010-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/76037Pfaffen, Maria Valeria del Valle; Ortiz, Patricia Ines; Córdoba de Torresi, Susana I.; Torresi, Roberto M.; On the pH dependence of electroactivity of poly(methylene blue) films; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 55; 5; 2-2010; 1766-17710013-4686CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0013468609013383info:eu-repo/semantics/altIdentifier/doi/10.1016/j.electacta.2009.10.062info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:44:51Zoai:ri.conicet.gov.ar:11336/76037instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:44:51.741CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv On the pH dependence of electroactivity of poly(methylene blue) films
title On the pH dependence of electroactivity of poly(methylene blue) films
spellingShingle On the pH dependence of electroactivity of poly(methylene blue) films
Pfaffen, Maria Valeria del Valle
Poly(Methylene Blue)
Quartz Crystal Microbalance
Spectroelectrochemistry
title_short On the pH dependence of electroactivity of poly(methylene blue) films
title_full On the pH dependence of electroactivity of poly(methylene blue) films
title_fullStr On the pH dependence of electroactivity of poly(methylene blue) films
title_full_unstemmed On the pH dependence of electroactivity of poly(methylene blue) films
title_sort On the pH dependence of electroactivity of poly(methylene blue) films
dc.creator.none.fl_str_mv Pfaffen, Maria Valeria del Valle
Ortiz, Patricia Ines
Córdoba de Torresi, Susana I.
Torresi, Roberto M.
author Pfaffen, Maria Valeria del Valle
author_facet Pfaffen, Maria Valeria del Valle
Ortiz, Patricia Ines
Córdoba de Torresi, Susana I.
Torresi, Roberto M.
author_role author
author2 Ortiz, Patricia Ines
Córdoba de Torresi, Susana I.
Torresi, Roberto M.
author2_role author
author
author
dc.subject.none.fl_str_mv Poly(Methylene Blue)
Quartz Crystal Microbalance
Spectroelectrochemistry
topic Poly(Methylene Blue)
Quartz Crystal Microbalance
Spectroelectrochemistry
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The electrochemical behavior of poly(methylene blue) on different electrodes has been investigated by electrochemical quartz crystal microbalance and in situ spectrophotometric measurements coupled to cyclic voltammetry. Polymeric films were obtained potentiodynamically and the charge transport mechanism was analyzed. The electrochemical results show that polymer electroactivity depends not only on pH but also on the substrate. Charge compensation changes with both pH and the size of the anions showing a transition in the pH range of polymer pKa. It was demonstrated by spectroelectrochemical experiments that the electroactivity of the film depends on the radical/radical cation equilibrium. The potentials where the most electroactive species are formed have been determined.
Fil: Pfaffen, Maria Valeria del Valle. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Ortiz, Patricia Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Córdoba de Torresi, Susana I.. Universidade de Sao Paulo; Brasil
Fil: Torresi, Roberto M.. Universidade de Sao Paulo; Brasil
description The electrochemical behavior of poly(methylene blue) on different electrodes has been investigated by electrochemical quartz crystal microbalance and in situ spectrophotometric measurements coupled to cyclic voltammetry. Polymeric films were obtained potentiodynamically and the charge transport mechanism was analyzed. The electrochemical results show that polymer electroactivity depends not only on pH but also on the substrate. Charge compensation changes with both pH and the size of the anions showing a transition in the pH range of polymer pKa. It was demonstrated by spectroelectrochemical experiments that the electroactivity of the film depends on the radical/radical cation equilibrium. The potentials where the most electroactive species are formed have been determined.
publishDate 2010
dc.date.none.fl_str_mv 2010-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/76037
Pfaffen, Maria Valeria del Valle; Ortiz, Patricia Ines; Córdoba de Torresi, Susana I.; Torresi, Roberto M.; On the pH dependence of electroactivity of poly(methylene blue) films; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 55; 5; 2-2010; 1766-1771
0013-4686
CONICET Digital
CONICET
url http://hdl.handle.net/11336/76037
identifier_str_mv Pfaffen, Maria Valeria del Valle; Ortiz, Patricia Ines; Córdoba de Torresi, Susana I.; Torresi, Roberto M.; On the pH dependence of electroactivity of poly(methylene blue) films; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 55; 5; 2-2010; 1766-1771
0013-4686
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0013468609013383
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.electacta.2009.10.062
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842268693702115328
score 13.13397

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