Study of the electron transfer properties of nanostructured bimetallic films of polymerized porphyrins
- Autores
- Hamer, Mariana; Carballo, Romina Raquel; Cid, Nicolás Gonzalo; Rezzano, Irene Noemí
- Año de publicación
- 2012
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The amperometric response of gold electrodes modified with bimetallic films of metalloporphyrins (FeCuPP) to H 2O 2 is dramatically higher than the corresponding to the bare electrode (up to 60 times) and far exceeding the individual CuPP or FePP. This response is attributed to the incorporation of H 2O 2 as ligand of both metal centers. Polymeric mono and bimetallic porphyrins doped with multiwalled carbon nanotubes were studied by EIS and voltammetry to understand the differential response. A better electron transfer rate was observed in the composites allowing the study of the effect of ligands on the electrochemical response. The cyclic voltammetry showed a reversible wave for azide reduction only with the bimetallic composite. The EIS experiment showed two different R C time constants suggesting that H 2O 2 and azide intercalate as linking the metal centres. The anion nitrite inhibits these differences and does not affect the monometallic structures. Polymers deposited onto gold electrodes reveal an amorphous structure by SEM micrograph, whereas the corresponding composites prepared by electro-co-deposition present a network of interconnected fibrils with diameters similar to the nanotubes serving as backbones of the porphyrin aggregates.
Fil: Hamer, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica. Cátedra de Química Analítica; Argentina
Fil: Carballo, Romina Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica. Cátedra de Química Analítica; Argentina
Fil: Cid, Nicolás Gonzalo. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica. Cátedra de Química Analítica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Rezzano, Irene Noemí. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica. Cátedra de Química Analítica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina - Materia
-
Porphyrins
nanotubes
EIS
Voltammetry - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/270617
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Study of the electron transfer properties of nanostructured bimetallic films of polymerized porphyrinsHamer, MarianaCarballo, Romina RaquelCid, Nicolás GonzaloRezzano, Irene NoemíPorphyrinsnanotubesEISVoltammetryhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The amperometric response of gold electrodes modified with bimetallic films of metalloporphyrins (FeCuPP) to H 2O 2 is dramatically higher than the corresponding to the bare electrode (up to 60 times) and far exceeding the individual CuPP or FePP. This response is attributed to the incorporation of H 2O 2 as ligand of both metal centers. Polymeric mono and bimetallic porphyrins doped with multiwalled carbon nanotubes were studied by EIS and voltammetry to understand the differential response. A better electron transfer rate was observed in the composites allowing the study of the effect of ligands on the electrochemical response. The cyclic voltammetry showed a reversible wave for azide reduction only with the bimetallic composite. The EIS experiment showed two different R C time constants suggesting that H 2O 2 and azide intercalate as linking the metal centres. The anion nitrite inhibits these differences and does not affect the monometallic structures. Polymers deposited onto gold electrodes reveal an amorphous structure by SEM micrograph, whereas the corresponding composites prepared by electro-co-deposition present a network of interconnected fibrils with diameters similar to the nanotubes serving as backbones of the porphyrin aggregates.Fil: Hamer, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica. Cátedra de Química Analítica; ArgentinaFil: Carballo, Romina Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica. Cátedra de Química Analítica; ArgentinaFil: Cid, Nicolás Gonzalo. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica. Cátedra de Química Analítica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Rezzano, Irene Noemí. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica. Cátedra de Química Analítica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; ArgentinaPergamon-Elsevier Science Ltd2012-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/270617Hamer, Mariana; Carballo, Romina Raquel; Cid, Nicolás Gonzalo; Rezzano, Irene Noemí; Study of the electron transfer properties of nanostructured bimetallic films of polymerized porphyrins; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 78; 9-2012; 302-3070013-4686CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.electacta.2012.05.097info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:36:08Zoai:ri.conicet.gov.ar:11336/270617instacron: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 09:36:08.863CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Study of the electron transfer properties of nanostructured bimetallic films of polymerized porphyrins |
title |
Study of the electron transfer properties of nanostructured bimetallic films of polymerized porphyrins |
spellingShingle |
Study of the electron transfer properties of nanostructured bimetallic films of polymerized porphyrins Hamer, Mariana Porphyrins nanotubes EIS Voltammetry |
title_short |
Study of the electron transfer properties of nanostructured bimetallic films of polymerized porphyrins |
title_full |
Study of the electron transfer properties of nanostructured bimetallic films of polymerized porphyrins |
title_fullStr |
Study of the electron transfer properties of nanostructured bimetallic films of polymerized porphyrins |
title_full_unstemmed |
Study of the electron transfer properties of nanostructured bimetallic films of polymerized porphyrins |
title_sort |
Study of the electron transfer properties of nanostructured bimetallic films of polymerized porphyrins |
dc.creator.none.fl_str_mv |
Hamer, Mariana Carballo, Romina Raquel Cid, Nicolás Gonzalo Rezzano, Irene Noemí |
author |
Hamer, Mariana |
author_facet |
Hamer, Mariana Carballo, Romina Raquel Cid, Nicolás Gonzalo Rezzano, Irene Noemí |
author_role |
author |
author2 |
Carballo, Romina Raquel Cid, Nicolás Gonzalo Rezzano, Irene Noemí |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Porphyrins nanotubes EIS Voltammetry |
topic |
Porphyrins nanotubes EIS Voltammetry |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The amperometric response of gold electrodes modified with bimetallic films of metalloporphyrins (FeCuPP) to H 2O 2 is dramatically higher than the corresponding to the bare electrode (up to 60 times) and far exceeding the individual CuPP or FePP. This response is attributed to the incorporation of H 2O 2 as ligand of both metal centers. Polymeric mono and bimetallic porphyrins doped with multiwalled carbon nanotubes were studied by EIS and voltammetry to understand the differential response. A better electron transfer rate was observed in the composites allowing the study of the effect of ligands on the electrochemical response. The cyclic voltammetry showed a reversible wave for azide reduction only with the bimetallic composite. The EIS experiment showed two different R C time constants suggesting that H 2O 2 and azide intercalate as linking the metal centres. The anion nitrite inhibits these differences and does not affect the monometallic structures. Polymers deposited onto gold electrodes reveal an amorphous structure by SEM micrograph, whereas the corresponding composites prepared by electro-co-deposition present a network of interconnected fibrils with diameters similar to the nanotubes serving as backbones of the porphyrin aggregates. Fil: Hamer, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica. Cátedra de Química Analítica; Argentina Fil: Carballo, Romina Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica. Cátedra de Química Analítica; Argentina Fil: Cid, Nicolás Gonzalo. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica. Cátedra de Química Analítica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Rezzano, Irene Noemí. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica. Cátedra de Química Analítica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina |
description |
The amperometric response of gold electrodes modified with bimetallic films of metalloporphyrins (FeCuPP) to H 2O 2 is dramatically higher than the corresponding to the bare electrode (up to 60 times) and far exceeding the individual CuPP or FePP. This response is attributed to the incorporation of H 2O 2 as ligand of both metal centers. Polymeric mono and bimetallic porphyrins doped with multiwalled carbon nanotubes were studied by EIS and voltammetry to understand the differential response. A better electron transfer rate was observed in the composites allowing the study of the effect of ligands on the electrochemical response. The cyclic voltammetry showed a reversible wave for azide reduction only with the bimetallic composite. The EIS experiment showed two different R C time constants suggesting that H 2O 2 and azide intercalate as linking the metal centres. The anion nitrite inhibits these differences and does not affect the monometallic structures. Polymers deposited onto gold electrodes reveal an amorphous structure by SEM micrograph, whereas the corresponding composites prepared by electro-co-deposition present a network of interconnected fibrils with diameters similar to the nanotubes serving as backbones of the porphyrin aggregates. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-09 |
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/11336/270617 Hamer, Mariana; Carballo, Romina Raquel; Cid, Nicolás Gonzalo; Rezzano, Irene Noemí; Study of the electron transfer properties of nanostructured bimetallic films of polymerized porphyrins; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 78; 9-2012; 302-307 0013-4686 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/270617 |
identifier_str_mv |
Hamer, Mariana; Carballo, Romina Raquel; Cid, Nicolás Gonzalo; Rezzano, Irene Noemí; Study of the electron transfer properties of nanostructured bimetallic films of polymerized porphyrins; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 78; 9-2012; 302-307 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/doi/10.1016/j.electacta.2012.05.097 |
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 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 |
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1844613131054088192 |
score |
13.070432 |