Simple synthesis of gold-decorated silica nanoparticles by in situ precipitation method with new plasmonic properties

Autores
Félix, Lizbet León; Martínez Porcel, Joaquín; Herrera Aragón, Fermín Fidel; Pacheco Salazar, David Gregorio; Sousa, Marcelo Henrique
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We describe a simple method for the preparation of gold-decorated silica (SiO₂) nanoparticles (NPs) by the in situ precipitation method using simple BH₄⁻ ions reduction as a procedure, where BH₄⁻ ions are adsorbed onto PEI-functionalized SiO₂ NPs for stabilizing and reducing gold ions onto PEI-SiO₂ surface in water under ambient conditions. The result was 3-nm gold nanoshell NPs attached to SiO₂ core (~ 75 nm) with a surface plasmon resonance (SPR) at ~ 680 nm. SPR band is associated with Au NP aggregates that arise from strong interparticle interaction. This is an alternative to the gold-seeding methods and the use of anionic gold species for the obtention of gold-decorated SiO₂ NPs with an important red-shift in UV–Vis absorption and with potential applications in biosensors and photothermal therapy.
Facultad de Ciencias Exactas
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Materia
Ciencias Exactas
Física
Gold
Decorated
PEI-coated silica
Polyethyleneimine
Red-shift
Plasmonic
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/123834
Acceder
id SEDICI_eff1228f3709c70a9d603cea5d53e161
oai_identifier_str oai:sedici.unlp.edu.ar:10915/123834
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Simple synthesis of gold-decorated silica nanoparticles by in situ precipitation method with new plasmonic propertiesFélix, Lizbet LeónMartínez Porcel, JoaquínHerrera Aragón, Fermín FidelPacheco Salazar, David GregorioSousa, Marcelo HenriqueCiencias ExactasFísicaGoldDecoratedPEI-coated silicaPolyethyleneimineRed-shiftPlasmonicWe describe a simple method for the preparation of gold-decorated silica (SiO₂) nanoparticles (NPs) by the in situ precipitation method using simple BH₄⁻ ions reduction as a procedure, where BH₄⁻ ions are adsorbed onto PEI-functionalized SiO₂ NPs for stabilizing and reducing gold ions onto PEI-SiO₂ surface in water under ambient conditions. The result was 3-nm gold nanoshell NPs attached to SiO₂ core (~ 75 nm) with a surface plasmon resonance (SPR) at ~ 680 nm. SPR band is associated with Au NP aggregates that arise from strong interparticle interaction. This is an alternative to the gold-seeding methods and the use of anionic gold species for the obtention of gold-decorated SiO₂ NPs with an important red-shift in UV–Vis absorption and with potential applications in biosensors and photothermal therapy.Facultad de Ciencias ExactasInstituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas2021-03-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/123834enginfo:eu-repo/semantics/altIdentifier/issn/2523-3963info:eu-repo/semantics/altIdentifier/issn/2523-3971info:eu-repo/semantics/altIdentifier/doi/10.1007/s42452-021-04456-0info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-03T11:01:34Zoai:sedici.unlp.edu.ar:10915/123834Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 11:01:34.249SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Simple synthesis of gold-decorated silica nanoparticles by in situ precipitation method with new plasmonic properties
title Simple synthesis of gold-decorated silica nanoparticles by in situ precipitation method with new plasmonic properties
spellingShingle Simple synthesis of gold-decorated silica nanoparticles by in situ precipitation method with new plasmonic properties
Félix, Lizbet León
Ciencias Exactas
Física
Gold
Decorated
PEI-coated silica
Polyethyleneimine
Red-shift
Plasmonic
title_short Simple synthesis of gold-decorated silica nanoparticles by in situ precipitation method with new plasmonic properties
title_full Simple synthesis of gold-decorated silica nanoparticles by in situ precipitation method with new plasmonic properties
title_fullStr Simple synthesis of gold-decorated silica nanoparticles by in situ precipitation method with new plasmonic properties
title_full_unstemmed Simple synthesis of gold-decorated silica nanoparticles by in situ precipitation method with new plasmonic properties
title_sort Simple synthesis of gold-decorated silica nanoparticles by in situ precipitation method with new plasmonic properties
dc.creator.none.fl_str_mv Félix, Lizbet León
Martínez Porcel, Joaquín
Herrera Aragón, Fermín Fidel
Pacheco Salazar, David Gregorio
Sousa, Marcelo Henrique
author Félix, Lizbet León
author_facet Félix, Lizbet León
Martínez Porcel, Joaquín
Herrera Aragón, Fermín Fidel
Pacheco Salazar, David Gregorio
Sousa, Marcelo Henrique
author_role author
author2 Martínez Porcel, Joaquín
Herrera Aragón, Fermín Fidel
Pacheco Salazar, David Gregorio
Sousa, Marcelo Henrique
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Física
Gold
Decorated
PEI-coated silica
Polyethyleneimine
Red-shift
Plasmonic
topic Ciencias Exactas
Física
Gold
Decorated
PEI-coated silica
Polyethyleneimine
Red-shift
Plasmonic
dc.description.none.fl_txt_mv We describe a simple method for the preparation of gold-decorated silica (SiO₂) nanoparticles (NPs) by the in situ precipitation method using simple BH₄⁻ ions reduction as a procedure, where BH₄⁻ ions are adsorbed onto PEI-functionalized SiO₂ NPs for stabilizing and reducing gold ions onto PEI-SiO₂ surface in water under ambient conditions. The result was 3-nm gold nanoshell NPs attached to SiO₂ core (~ 75 nm) with a surface plasmon resonance (SPR) at ~ 680 nm. SPR band is associated with Au NP aggregates that arise from strong interparticle interaction. This is an alternative to the gold-seeding methods and the use of anionic gold species for the obtention of gold-decorated SiO₂ NPs with an important red-shift in UV–Vis absorption and with potential applications in biosensors and photothermal therapy.
Facultad de Ciencias Exactas
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
description We describe a simple method for the preparation of gold-decorated silica (SiO₂) nanoparticles (NPs) by the in situ precipitation method using simple BH₄⁻ ions reduction as a procedure, where BH₄⁻ ions are adsorbed onto PEI-functionalized SiO₂ NPs for stabilizing and reducing gold ions onto PEI-SiO₂ surface in water under ambient conditions. The result was 3-nm gold nanoshell NPs attached to SiO₂ core (~ 75 nm) with a surface plasmon resonance (SPR) at ~ 680 nm. SPR band is associated with Au NP aggregates that arise from strong interparticle interaction. This is an alternative to the gold-seeding methods and the use of anionic gold species for the obtention of gold-decorated SiO₂ NPs with an important red-shift in UV–Vis absorption and with potential applications in biosensors and photothermal therapy.
publishDate 2021
dc.date.none.fl_str_mv 2021-03-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/123834
url http://sedici.unlp.edu.ar/handle/10915/123834
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/2523-3963
info:eu-repo/semantics/altIdentifier/issn/2523-3971
info:eu-repo/semantics/altIdentifier/doi/10.1007/s42452-021-04456-0
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.13397

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