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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/5126
Ver los metadatos del registro completo
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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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1844614091276025856 |
score |
13.070432 |