Kinetic and plasmonic properties of gold nanorods adsorbed on glass substrates

Monodisperse gold nanorods with different sizes were synthesized and adsorbed on chemically modified glass substrates. Influence of surfactant molar concentration on nanorod adsorption was studied and the optimum range was determined. During substrate coverages we monitored the growth of longitudina...

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Detalles Bibliográficos
Autores principales: Gutierrez, Marina, Scarpettini, Alberto F
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 2020
Materias:
UTN
FRD
Plasmonics
Gold nanorods
Coverage and aggregation
Localized surface plasmon resonances
SERS substrates
Acceso en línea:http://hdl.handle.net/20.500.12272/4552
Aporte de:
RIA - Repositorio Institucional Abierto (UTN) de Universidad Tecnológica Nacional
id I68-R174-20.500.12272-4552
record_format dspace
institution Universidad Tecnológica Nacional
institution_str I-68
repository_str R-174
collection RIA - Repositorio Institucional Abierto (UTN)
language Inglés
topic UTN
FRD
Plasmonics
Gold nanorods
Coverage and aggregation
Localized surface plasmon resonances
SERS substrates
spellingShingle UTN
FRD
Plasmonics
Gold nanorods
Coverage and aggregation
Localized surface plasmon resonances
SERS substrates
Gutierrez, Marina
Scarpettini, Alberto F
Kinetic and plasmonic properties of gold nanorods adsorbed on glass substrates
topic_facet UTN
FRD
Plasmonics
Gold nanorods
Coverage and aggregation
Localized surface plasmon resonances
SERS substrates
description Monodisperse gold nanorods with different sizes were synthesized and adsorbed on chemically modified glass substrates. Influence of surfactant molar concentration on nanorod adsorption was studied and the optimum range was determined. During substrate coverages we monitored the growth of longitudinal localized Surface plasmon resonances at short times due to density increase of isolated nanorods and, at longer times, their subsequent decrease and a concurrent growth of coupling resonances owing to nanoparticle surface mobility andaggregation. Temporal evolution of amplitudes of resonance peaks in extinction spectra and nanorod counting statistics in electron micrographs were used to model both coverage and aggregation processes, as exponential- like functions of time. Their characteristic times and saturation values were analyzed and related to kinetic parameters, nanorod dimensions and extinction coefficients. This work can be used as a predictive tool to prepare plasmonic substrates with desired optical resonances.
format Artículo
publishedVersion
author Gutierrez, Marina
Scarpettini, Alberto F
author_facet Gutierrez, Marina
Scarpettini, Alberto F
author_sort Gutierrez, Marina
title Kinetic and plasmonic properties of gold nanorods adsorbed on glass substrates
title_short Kinetic and plasmonic properties of gold nanorods adsorbed on glass substrates
title_full Kinetic and plasmonic properties of gold nanorods adsorbed on glass substrates
title_fullStr Kinetic and plasmonic properties of gold nanorods adsorbed on glass substrates
title_full_unstemmed Kinetic and plasmonic properties of gold nanorods adsorbed on glass substrates
title_sort kinetic and plasmonic properties of gold nanorods adsorbed on glass substrates
publishDate 2020
url http://hdl.handle.net/20.500.12272/4552
work_keys_str_mv AT gutierrezmarina kineticandplasmonicpropertiesofgoldnanorodsadsorbedonglasssubstrates
AT scarpettinialbertof kineticandplasmonicpropertiesofgoldnanorodsadsorbedonglasssubstrates
bdutipo_str Repositorios
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