Zinc Porphyrin Metal-Center Exchange at the Solid–Liquid Interface

Autores
Franke, Matthias; Marchini, Florencia; Jux, Norbert; Steinrück, Hans-Peter; Lytken, Ole; Williams, Federico José
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Demetalation of zinc 5,10,15,20-tetraphenylporphyrin (ZnTPP) under acidic conditions and ion exchange with Cu2+ions at neutral pH are both rapid reactions in the liquid medium. However, for ZnTPP monolayers adsorbed on a Au(111) surface exposed to aqueous solution, we find that, although ion exchange takes place rapidly as expected, demetalation does not occur, even at pH values as low as 0. Based on this, we conclude that metal center exchange on the surface does not proceed through a free-base porphyrin as an intermediate. Furthermore, once formed, CuTPP is stable on the surface and the reverse exchange from CuTPP to ZnTPP in the presence of Zn2+ions could not be achieved. The preference for copper is so strong that even an attempt to exchange adsorbed ZnTPP with Ni2+ions in the presence of traces of Cu2+yielded CuTPP rather than NiTPP.
Fil: Franke, Matthias. Friedrich Alexander University Erlangen Nürnberg; Alemania
Fil: Marchini, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; Argentina
Fil: Jux, Norbert. Friedrich Alexander University Erlangen Nürnberg; Alemania
Fil: Steinrück, Hans-Peter. Friedrich Alexander University Erlangen Nürnberg; Alemania
Fil: Lytken, Ole. Friedrich Alexander University Erlangen Nürnberg; Alemania
Fil: Williams, Federico José. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; Argentina
Materia
Ion Exchange
Metalation
Porphyrins
Solid&Ndash;Liquid Interfaces
Zinc
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:11336/59009
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Zinc Porphyrin Metal-Center Exchange at the Solid–Liquid InterfaceFranke, MatthiasMarchini, FlorenciaJux, NorbertSteinrück, Hans-PeterLytken, OleWilliams, Federico JoséIon ExchangeMetalationPorphyrinsSolid&Ndash;Liquid InterfacesZinchttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Demetalation of zinc 5,10,15,20-tetraphenylporphyrin (ZnTPP) under acidic conditions and ion exchange with Cu2+ions at neutral pH are both rapid reactions in the liquid medium. However, for ZnTPP monolayers adsorbed on a Au(111) surface exposed to aqueous solution, we find that, although ion exchange takes place rapidly as expected, demetalation does not occur, even at pH values as low as 0. Based on this, we conclude that metal center exchange on the surface does not proceed through a free-base porphyrin as an intermediate. Furthermore, once formed, CuTPP is stable on the surface and the reverse exchange from CuTPP to ZnTPP in the presence of Zn2+ions could not be achieved. The preference for copper is so strong that even an attempt to exchange adsorbed ZnTPP with Ni2+ions in the presence of traces of Cu2+yielded CuTPP rather than NiTPP.Fil: Franke, Matthias. Friedrich Alexander University Erlangen Nürnberg; AlemaniaFil: Marchini, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; ArgentinaFil: Jux, Norbert. Friedrich Alexander University Erlangen Nürnberg; AlemaniaFil: Steinrück, Hans-Peter. Friedrich Alexander University Erlangen Nürnberg; AlemaniaFil: Lytken, Ole. Friedrich Alexander University Erlangen Nürnberg; AlemaniaFil: Williams, Federico José. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; ArgentinaWiley VCH Verlag2016-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/59009Franke, Matthias; Marchini, Florencia; Jux, Norbert; Steinrück, Hans-Peter; Lytken, Ole; et al.; Zinc Porphyrin Metal-Center Exchange at the Solid–Liquid Interface; Wiley VCH Verlag; Chemistry- A European Journal; 22; 25; 1-2016; 8520-85240947-6539CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1002/chem.201600634info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/chem.201600634info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:34:32Zoai:ri.conicet.gov.ar:11336/59009instacron: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 10:34:32.575CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Zinc Porphyrin Metal-Center Exchange at the Solid–Liquid Interface
title Zinc Porphyrin Metal-Center Exchange at the Solid–Liquid Interface
spellingShingle Zinc Porphyrin Metal-Center Exchange at the Solid–Liquid Interface
Franke, Matthias
Ion Exchange
Metalation
Porphyrins
Solid&Ndash;Liquid Interfaces
Zinc
title_short Zinc Porphyrin Metal-Center Exchange at the Solid–Liquid Interface
title_full Zinc Porphyrin Metal-Center Exchange at the Solid–Liquid Interface
title_fullStr Zinc Porphyrin Metal-Center Exchange at the Solid–Liquid Interface
title_full_unstemmed Zinc Porphyrin Metal-Center Exchange at the Solid–Liquid Interface
title_sort Zinc Porphyrin Metal-Center Exchange at the Solid–Liquid Interface
dc.creator.none.fl_str_mv Franke, Matthias
Marchini, Florencia
Jux, Norbert
Steinrück, Hans-Peter
Lytken, Ole
Williams, Federico José
author Franke, Matthias
author_facet Franke, Matthias
Marchini, Florencia
Jux, Norbert
Steinrück, Hans-Peter
Lytken, Ole
Williams, Federico José
author_role author
author2 Marchini, Florencia
Jux, Norbert
Steinrück, Hans-Peter
Lytken, Ole
Williams, Federico José
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ion Exchange
Metalation
Porphyrins
Solid&Ndash;Liquid Interfaces
Zinc
topic Ion Exchange
Metalation
Porphyrins
Solid&Ndash;Liquid Interfaces
Zinc
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Demetalation of zinc 5,10,15,20-tetraphenylporphyrin (ZnTPP) under acidic conditions and ion exchange with Cu2+ions at neutral pH are both rapid reactions in the liquid medium. However, for ZnTPP monolayers adsorbed on a Au(111) surface exposed to aqueous solution, we find that, although ion exchange takes place rapidly as expected, demetalation does not occur, even at pH values as low as 0. Based on this, we conclude that metal center exchange on the surface does not proceed through a free-base porphyrin as an intermediate. Furthermore, once formed, CuTPP is stable on the surface and the reverse exchange from CuTPP to ZnTPP in the presence of Zn2+ions could not be achieved. The preference for copper is so strong that even an attempt to exchange adsorbed ZnTPP with Ni2+ions in the presence of traces of Cu2+yielded CuTPP rather than NiTPP.
Fil: Franke, Matthias. Friedrich Alexander University Erlangen Nürnberg; Alemania
Fil: Marchini, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; Argentina
Fil: Jux, Norbert. Friedrich Alexander University Erlangen Nürnberg; Alemania
Fil: Steinrück, Hans-Peter. Friedrich Alexander University Erlangen Nürnberg; Alemania
Fil: Lytken, Ole. Friedrich Alexander University Erlangen Nürnberg; Alemania
Fil: Williams, Federico José. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; Argentina
description Demetalation of zinc 5,10,15,20-tetraphenylporphyrin (ZnTPP) under acidic conditions and ion exchange with Cu2+ions at neutral pH are both rapid reactions in the liquid medium. However, for ZnTPP monolayers adsorbed on a Au(111) surface exposed to aqueous solution, we find that, although ion exchange takes place rapidly as expected, demetalation does not occur, even at pH values as low as 0. Based on this, we conclude that metal center exchange on the surface does not proceed through a free-base porphyrin as an intermediate. Furthermore, once formed, CuTPP is stable on the surface and the reverse exchange from CuTPP to ZnTPP in the presence of Zn2+ions could not be achieved. The preference for copper is so strong that even an attempt to exchange adsorbed ZnTPP with Ni2+ions in the presence of traces of Cu2+yielded CuTPP rather than NiTPP.
publishDate 2016
dc.date.none.fl_str_mv 2016-01
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/11336/59009
Franke, Matthias; Marchini, Florencia; Jux, Norbert; Steinrück, Hans-Peter; Lytken, Ole; et al.; Zinc Porphyrin Metal-Center Exchange at the Solid–Liquid Interface; Wiley VCH Verlag; Chemistry- A European Journal; 22; 25; 1-2016; 8520-8524
0947-6539
CONICET Digital
CONICET
url http://hdl.handle.net/11336/59009
identifier_str_mv Franke, Matthias; Marchini, Florencia; Jux, Norbert; Steinrück, Hans-Peter; Lytken, Ole; et al.; Zinc Porphyrin Metal-Center Exchange at the Solid–Liquid Interface; Wiley VCH Verlag; Chemistry- A European Journal; 22; 25; 1-2016; 8520-8524
0947-6539
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1002/chem.201600634
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/chem.201600634
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 Wiley VCH Verlag
publisher.none.fl_str_mv Wiley VCH Verlag
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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score 13.070432

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