The metal/electroactive polymer interface studied by surface resistance

Autores
Tucceri, Ismael Ricardo
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The experimental arrangement in this investigation was one in which a poly(o-aminophenol) (POAP) film was sup- ported on a thin gold film electrode whose thickness is of the order of the mean free path of conduction electrons of gold. This arrangement allows one to apply the surface resistance technique to study the electrochemical processes oc- curring at the metal film surface coated with the polymer film. The dependence of the resistance change of the thin gold film electrode on the external electrolyte composition for polymer thickness lower than 0.25 mC·cm–2, was attributed to a competition, at the gold film surface, between the redox process of the polymer and adsorption of different ion species contained in the electrolyte. This competition reflects a discontinuous character of polymer thickness lower than 0.25 mC·cm–2 at the metal polymer interface. The resistance response of the metal film becomes independent of both the external electrolyte composition and polymer thickness for polymer thickness higher than 0.8 mC·cm–2. Then, POAP thicknesses higher than 0.8 mC·cm–2 seem to be compact enough at the metal polymer interface to prevent the interac- tion of the species contained in the supporting electrolyte with the gold film surface. The increase of the gold film re- sistance in going from the reduced to the oxidized state for POAP thicknesses higher than 0.8 mC·cm–2 was attributed to the redox conversion of poly(o-aminophenol) from amine to imine groups. This resistance increase was explained as a transition from specular to diffuse scattering of conduction electrons of gold at the gold poly(o-aminophenol) interface due to a less compact distribution of oxidised sites of POAP as compared with that of the reduced ones. An attenuation of the resistance response of the gold film was observed when the POAP films were deactivated either by contact with a ferric cation solution or prolonged potential cycling. The deactivation of the polymer film was attributed to the creation of inactive gaps within the redox sites configuration of POAP. The surface resistance technique allows one to detect different redox sites configurations of POAP on the gold film, according to the method used to deactivate the polymer films. In this work, it is demonstrated that the surface resistance technique can be employed to study not only the ability of a POAP film to inhibit the interaction of different species in solution with a metal surface but also the deactivation of the polymer film.
Fil: Tucceri, Ismael Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
Materia
SURFACE RESISTANCE
THIN GOLD FILM ELECTRODE
OLY(O-AMINOPHENOL) FILMS
POLY(O-AMINOPHENOL)/GOLD INTERFACE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/5126

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network_name_str CONICET Digital (CONICET)
spelling The metal/electroactive polymer interface studied by surface resistanceTucceri, Ismael RicardoSURFACE RESISTANCETHIN GOLD FILM ELECTRODEOLY(O-AMINOPHENOL) FILMSPOLY(O-AMINOPHENOL)/GOLD INTERFACEhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The experimental arrangement in this investigation was one in which a poly(o-aminophenol) (POAP) film was sup- ported on a thin gold film electrode whose thickness is of the order of the mean free path of conduction electrons of gold. This arrangement allows one to apply the surface resistance technique to study the electrochemical processes oc- curring at the metal film surface coated with the polymer film. The dependence of the resistance change of the thin gold film electrode on the external electrolyte composition for polymer thickness lower than 0.25 mC·cm–2, was attributed to a competition, at the gold film surface, between the redox process of the polymer and adsorption of different ion species contained in the electrolyte. This competition reflects a discontinuous character of polymer thickness lower than 0.25 mC·cm–2 at the metal polymer interface. The resistance response of the metal film becomes independent of both the external electrolyte composition and polymer thickness for polymer thickness higher than 0.8 mC·cm–2. Then, POAP thicknesses higher than 0.8 mC·cm–2 seem to be compact enough at the metal polymer interface to prevent the interac- tion of the species contained in the supporting electrolyte with the gold film surface. The increase of the gold film re- sistance in going from the reduced to the oxidized state for POAP thicknesses higher than 0.8 mC·cm–2 was attributed to the redox conversion of poly(o-aminophenol) from amine to imine groups. This resistance increase was explained as a transition from specular to diffuse scattering of conduction electrons of gold at the gold poly(o-aminophenol) interface due to a less compact distribution of oxidised sites of POAP as compared with that of the reduced ones. An attenuation of the resistance response of the gold film was observed when the POAP films were deactivated either by contact with a ferric cation solution or prolonged potential cycling. The deactivation of the polymer film was attributed to the creation of inactive gaps within the redox sites configuration of POAP. The surface resistance technique allows one to detect different redox sites configurations of POAP on the gold film, according to the method used to deactivate the polymer films. In this work, it is demonstrated that the surface resistance technique can be employed to study not only the ability of a POAP film to inhibit the interaction of different species in solution with a metal surface but also the deactivation of the polymer film.Fil: Tucceri, Ismael Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; ArgentinaScientific Research2013-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/5126Tucceri, Ismael Ricardo; The metal/electroactive polymer interface studied by surface resistance; Scientific Research; Journal of Surface Engineered Materials and Advanced Technology; 3; 3; 7-2013; 205-2162161-4881enginfo:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/altIdentifier/url/http://www.scirp.org/journal/PaperInformation.aspx?PaperID=34482info:eu-repo/semantics/altIdentifier/doi/10.4236/jsemat.2013.33028info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:15:29Zoai:ri.conicet.gov.ar:11336/5126instacron: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:34982025-09-29 10:15:29.765CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The metal/electroactive polymer interface studied by surface resistance
title The metal/electroactive polymer interface studied by surface resistance
spellingShingle The metal/electroactive polymer interface studied by surface resistance
Tucceri, Ismael Ricardo
SURFACE RESISTANCE
THIN GOLD FILM ELECTRODE
OLY(O-AMINOPHENOL) FILMS
POLY(O-AMINOPHENOL)/GOLD INTERFACE
title_short The metal/electroactive polymer interface studied by surface resistance
title_full The metal/electroactive polymer interface studied by surface resistance
title_fullStr The metal/electroactive polymer interface studied by surface resistance
title_full_unstemmed The metal/electroactive polymer interface studied by surface resistance
title_sort The metal/electroactive polymer interface studied by surface resistance
dc.creator.none.fl_str_mv Tucceri, Ismael Ricardo
author Tucceri, Ismael Ricardo
author_facet Tucceri, Ismael Ricardo
author_role author
dc.subject.none.fl_str_mv SURFACE RESISTANCE
THIN GOLD FILM ELECTRODE
OLY(O-AMINOPHENOL) FILMS
POLY(O-AMINOPHENOL)/GOLD INTERFACE
topic SURFACE RESISTANCE
THIN GOLD FILM ELECTRODE
OLY(O-AMINOPHENOL) FILMS
POLY(O-AMINOPHENOL)/GOLD INTERFACE
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 experimental arrangement in this investigation was one in which a poly(o-aminophenol) (POAP) film was sup- ported on a thin gold film electrode whose thickness is of the order of the mean free path of conduction electrons of gold. This arrangement allows one to apply the surface resistance technique to study the electrochemical processes oc- curring at the metal film surface coated with the polymer film. The dependence of the resistance change of the thin gold film electrode on the external electrolyte composition for polymer thickness lower than 0.25 mC·cm–2, was attributed to a competition, at the gold film surface, between the redox process of the polymer and adsorption of different ion species contained in the electrolyte. This competition reflects a discontinuous character of polymer thickness lower than 0.25 mC·cm–2 at the metal polymer interface. The resistance response of the metal film becomes independent of both the external electrolyte composition and polymer thickness for polymer thickness higher than 0.8 mC·cm–2. Then, POAP thicknesses higher than 0.8 mC·cm–2 seem to be compact enough at the metal polymer interface to prevent the interac- tion of the species contained in the supporting electrolyte with the gold film surface. The increase of the gold film re- sistance in going from the reduced to the oxidized state for POAP thicknesses higher than 0.8 mC·cm–2 was attributed to the redox conversion of poly(o-aminophenol) from amine to imine groups. This resistance increase was explained as a transition from specular to diffuse scattering of conduction electrons of gold at the gold poly(o-aminophenol) interface due to a less compact distribution of oxidised sites of POAP as compared with that of the reduced ones. An attenuation of the resistance response of the gold film was observed when the POAP films were deactivated either by contact with a ferric cation solution or prolonged potential cycling. The deactivation of the polymer film was attributed to the creation of inactive gaps within the redox sites configuration of POAP. The surface resistance technique allows one to detect different redox sites configurations of POAP on the gold film, according to the method used to deactivate the polymer films. In this work, it is demonstrated that the surface resistance technique can be employed to study not only the ability of a POAP film to inhibit the interaction of different species in solution with a metal surface but also the deactivation of the polymer film.
Fil: Tucceri, Ismael Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
description The experimental arrangement in this investigation was one in which a poly(o-aminophenol) (POAP) film was sup- ported on a thin gold film electrode whose thickness is of the order of the mean free path of conduction electrons of gold. This arrangement allows one to apply the surface resistance technique to study the electrochemical processes oc- curring at the metal film surface coated with the polymer film. The dependence of the resistance change of the thin gold film electrode on the external electrolyte composition for polymer thickness lower than 0.25 mC·cm–2, was attributed to a competition, at the gold film surface, between the redox process of the polymer and adsorption of different ion species contained in the electrolyte. This competition reflects a discontinuous character of polymer thickness lower than 0.25 mC·cm–2 at the metal polymer interface. The resistance response of the metal film becomes independent of both the external electrolyte composition and polymer thickness for polymer thickness higher than 0.8 mC·cm–2. Then, POAP thicknesses higher than 0.8 mC·cm–2 seem to be compact enough at the metal polymer interface to prevent the interac- tion of the species contained in the supporting electrolyte with the gold film surface. The increase of the gold film re- sistance in going from the reduced to the oxidized state for POAP thicknesses higher than 0.8 mC·cm–2 was attributed to the redox conversion of poly(o-aminophenol) from amine to imine groups. This resistance increase was explained as a transition from specular to diffuse scattering of conduction electrons of gold at the gold poly(o-aminophenol) interface due to a less compact distribution of oxidised sites of POAP as compared with that of the reduced ones. An attenuation of the resistance response of the gold film was observed when the POAP films were deactivated either by contact with a ferric cation solution or prolonged potential cycling. The deactivation of the polymer film was attributed to the creation of inactive gaps within the redox sites configuration of POAP. The surface resistance technique allows one to detect different redox sites configurations of POAP on the gold film, according to the method used to deactivate the polymer films. In this work, it is demonstrated that the surface resistance technique can be employed to study not only the ability of a POAP film to inhibit the interaction of different species in solution with a metal surface but also the deactivation of the polymer film.
publishDate 2013
dc.date.none.fl_str_mv 2013-07
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/11336/5126
Tucceri, Ismael Ricardo; The metal/electroactive polymer interface studied by surface resistance; Scientific Research; Journal of Surface Engineered Materials and Advanced Technology; 3; 3; 7-2013; 205-216
2161-4881
url http://hdl.handle.net/11336/5126
identifier_str_mv Tucceri, Ismael Ricardo; The metal/electroactive polymer interface studied by surface resistance; Scientific Research; Journal of Surface Engineered Materials and Advanced Technology; 3; 3; 7-2013; 205-216
2161-4881
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/
info:eu-repo/semantics/altIdentifier/url/http://www.scirp.org/journal/PaperInformation.aspx?PaperID=34482
info:eu-repo/semantics/altIdentifier/doi/10.4236/jsemat.2013.33028
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Scientific Research
publisher.none.fl_str_mv Scientific Research
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
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