Oxidation of gold nanoparticles by Au(III) complexes in toluene

Autores
Goulet, Paul J. G.; Leonardi, Agustina Belen; Lennox, R. Bruce
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The rapid, stoichiometric oxidation of gold nanoparticles by tetraalkylammonium and tetraalkylphosphonium Au(III) complexes in toluene is reported here. Nanoparticle oxidation proceeds via a comproportionation mechanism and generates stable Au(I) complexes of the ammonium and phosphonium cations used. These reactions are studied for several organo-soluble nanoparticle systems, employing different cations and halides in the Au(III) oxidant complex, and a mechanism for the comproportionation reaction is proposed. It is demonstrated that Au nanorods stabilized in toluene can be progressively "sculpted" by Au(III) complexes. Measurement artifacts caused by the reduction of Au(I) and Au(III) species during conventional TEM imaging are also demonstrated and discussed. The results presented here provide insight into a host of issues in the chemistry of Au nanoparticles: nanoparticle oxidation, reduction of Au(III) species to Au(0) nanoparticles, galvanic replacement reactions using Au(III), and sample changes induced by TEM imaging. The oxidation of Au nanoparticles by Au(III) complexes in nonpolar solvents is expected to be a valuable new tool for nanoparticle sculpting, dissolution of nanogold templates, Au content determination, ligand removal from nanoparticles, nanoparticle purification, and Au recovery processes. © 2012 American Chemical Society.
Fil: Goulet, Paul J. G.. McGill University; Canadá
Fil: Leonardi, Agustina Belen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
Fil: Lennox, R. Bruce. McGill University; Canadá
Materia
Gold Nanoparticles
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:11336/79016
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Oxidation of gold nanoparticles by Au(III) complexes in tolueneGoulet, Paul J. G.Leonardi, Agustina BelenLennox, R. BruceGold Nanoparticleshttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2https://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2The rapid, stoichiometric oxidation of gold nanoparticles by tetraalkylammonium and tetraalkylphosphonium Au(III) complexes in toluene is reported here. Nanoparticle oxidation proceeds via a comproportionation mechanism and generates stable Au(I) complexes of the ammonium and phosphonium cations used. These reactions are studied for several organo-soluble nanoparticle systems, employing different cations and halides in the Au(III) oxidant complex, and a mechanism for the comproportionation reaction is proposed. It is demonstrated that Au nanorods stabilized in toluene can be progressively "sculpted" by Au(III) complexes. Measurement artifacts caused by the reduction of Au(I) and Au(III) species during conventional TEM imaging are also demonstrated and discussed. The results presented here provide insight into a host of issues in the chemistry of Au nanoparticles: nanoparticle oxidation, reduction of Au(III) species to Au(0) nanoparticles, galvanic replacement reactions using Au(III), and sample changes induced by TEM imaging. The oxidation of Au nanoparticles by Au(III) complexes in nonpolar solvents is expected to be a valuable new tool for nanoparticle sculpting, dissolution of nanogold templates, Au content determination, ligand removal from nanoparticles, nanoparticle purification, and Au recovery processes. © 2012 American Chemical Society.Fil: Goulet, Paul J. G.. McGill University; CanadáFil: Leonardi, Agustina Belen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaFil: Lennox, R. Bruce. McGill University; CanadáAmerican Chemical Society2012-07-22info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/79016Goulet, Paul J. G.; Leonardi, Agustina Belen; Lennox, R. Bruce; Oxidation of gold nanoparticles by Au(III) complexes in toluene; American Chemical Society; Journal of Physical Chemistry C; 116; 26; 22-7-2012; 14096-141021932-7447CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1021/jp304157ainfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/jp304157ainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:10:10Zoai:ri.conicet.gov.ar:11336/79016instacron: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 10:10:10.428CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Oxidation of gold nanoparticles by Au(III) complexes in toluene
title Oxidation of gold nanoparticles by Au(III) complexes in toluene
spellingShingle Oxidation of gold nanoparticles by Au(III) complexes in toluene
Goulet, Paul J. G.
Gold Nanoparticles
title_short Oxidation of gold nanoparticles by Au(III) complexes in toluene
title_full Oxidation of gold nanoparticles by Au(III) complexes in toluene
title_fullStr Oxidation of gold nanoparticles by Au(III) complexes in toluene
title_full_unstemmed Oxidation of gold nanoparticles by Au(III) complexes in toluene
title_sort Oxidation of gold nanoparticles by Au(III) complexes in toluene
dc.creator.none.fl_str_mv Goulet, Paul J. G.
Leonardi, Agustina Belen
Lennox, R. Bruce
author Goulet, Paul J. G.
author_facet Goulet, Paul J. G.
Leonardi, Agustina Belen
Lennox, R. Bruce
author_role author
author2 Leonardi, Agustina Belen
Lennox, R. Bruce
author2_role author
author
dc.subject.none.fl_str_mv Gold Nanoparticles
topic Gold Nanoparticles
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The rapid, stoichiometric oxidation of gold nanoparticles by tetraalkylammonium and tetraalkylphosphonium Au(III) complexes in toluene is reported here. Nanoparticle oxidation proceeds via a comproportionation mechanism and generates stable Au(I) complexes of the ammonium and phosphonium cations used. These reactions are studied for several organo-soluble nanoparticle systems, employing different cations and halides in the Au(III) oxidant complex, and a mechanism for the comproportionation reaction is proposed. It is demonstrated that Au nanorods stabilized in toluene can be progressively "sculpted" by Au(III) complexes. Measurement artifacts caused by the reduction of Au(I) and Au(III) species during conventional TEM imaging are also demonstrated and discussed. The results presented here provide insight into a host of issues in the chemistry of Au nanoparticles: nanoparticle oxidation, reduction of Au(III) species to Au(0) nanoparticles, galvanic replacement reactions using Au(III), and sample changes induced by TEM imaging. The oxidation of Au nanoparticles by Au(III) complexes in nonpolar solvents is expected to be a valuable new tool for nanoparticle sculpting, dissolution of nanogold templates, Au content determination, ligand removal from nanoparticles, nanoparticle purification, and Au recovery processes. © 2012 American Chemical Society.
Fil: Goulet, Paul J. G.. McGill University; Canadá
Fil: Leonardi, Agustina Belen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
Fil: Lennox, R. Bruce. McGill University; Canadá
description The rapid, stoichiometric oxidation of gold nanoparticles by tetraalkylammonium and tetraalkylphosphonium Au(III) complexes in toluene is reported here. Nanoparticle oxidation proceeds via a comproportionation mechanism and generates stable Au(I) complexes of the ammonium and phosphonium cations used. These reactions are studied for several organo-soluble nanoparticle systems, employing different cations and halides in the Au(III) oxidant complex, and a mechanism for the comproportionation reaction is proposed. It is demonstrated that Au nanorods stabilized in toluene can be progressively "sculpted" by Au(III) complexes. Measurement artifacts caused by the reduction of Au(I) and Au(III) species during conventional TEM imaging are also demonstrated and discussed. The results presented here provide insight into a host of issues in the chemistry of Au nanoparticles: nanoparticle oxidation, reduction of Au(III) species to Au(0) nanoparticles, galvanic replacement reactions using Au(III), and sample changes induced by TEM imaging. The oxidation of Au nanoparticles by Au(III) complexes in nonpolar solvents is expected to be a valuable new tool for nanoparticle sculpting, dissolution of nanogold templates, Au content determination, ligand removal from nanoparticles, nanoparticle purification, and Au recovery processes. © 2012 American Chemical Society.
publishDate 2012
dc.date.none.fl_str_mv 2012-07-22
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/11336/79016
Goulet, Paul J. G.; Leonardi, Agustina Belen; Lennox, R. Bruce; Oxidation of gold nanoparticles by Au(III) complexes in toluene; American Chemical Society; Journal of Physical Chemistry C; 116; 26; 22-7-2012; 14096-14102
1932-7447
CONICET Digital
CONICET
url http://hdl.handle.net/11336/79016
identifier_str_mv Goulet, Paul J. G.; Leonardi, Agustina Belen; Lennox, R. Bruce; Oxidation of gold nanoparticles by Au(III) complexes in toluene; American Chemical Society; Journal of Physical Chemistry C; 116; 26; 22-7-2012; 14096-14102
1932-7447
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1021/jp304157a
info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/jp304157a
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 American Chemical Society
publisher.none.fl_str_mv American Chemical Society
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 13.13397

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