Coverage and aggregation of gold nanoparticles on silanized glasses

We study the dynamics of the coverage and aggregation of gold nanoparticles over organosilanized glass substrates for different sizes of nanoparticles. We present measurements of extinction spectra and nanoparticle counting statistics and demonstrate that both methods are equivalent describing those...

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Autores principales:	Scarpettini, Alberto F., Bragas, Andrea Verónica
Publicado:	2010
Materias:	Characteristic time Counting statistics Different sizes Electrostatic repulsion Extinction spectra Glass substrates Gold Nanoparticles Saturation values Exponential functions Glass Oligomers Substrates Nanoparticles
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07437463_v26_n20_p15948_Scarpettini http://hdl.handle.net/20.500.12110/paper_07437463_v26_n20_p15948_Scarpettini
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_07437463_v26_n20_p15948_Scarpettini
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spelling	paper:paper_07437463_v26_n20_p15948_Scarpettini2023-06-08T15:44:58Z Coverage and aggregation of gold nanoparticles on silanized glasses Scarpettini, Alberto F. Bragas, Andrea Verónica Characteristic time Counting statistics Different sizes Electrostatic repulsion Extinction spectra Glass substrates Gold Nanoparticles Saturation values Exponential functions Glass Oligomers Substrates Nanoparticles We study the dynamics of the coverage and aggregation of gold nanoparticles over organosilanized glass substrates for different sizes of nanoparticles. We present measurements of extinction spectra and nanoparticle counting statistics and demonstrate that both methods are equivalent describing those processes. We introduce models that describe the mentioned dynamics, which are characterized by an exponential-like function with two relevant parameters: a saturation value and a characteristic time. The electrostatic repulsion plays a significant role in both processes. The aggregation is dominated by the mobility of the isolated nanoparticles, which first join in dimers and, further in time, in clusters of higher number of nanoparticles. © 2010 American Chemical Society. Fil:Scarpettini, A.F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bragas, A.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07437463_v26_n20_p15948_Scarpettini http://hdl.handle.net/20.500.12110/paper_07437463_v26_n20_p15948_Scarpettini
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Characteristic time Counting statistics Different sizes Electrostatic repulsion Extinction spectra Glass substrates Gold Nanoparticles Saturation values Exponential functions Glass Oligomers Substrates Nanoparticles
spellingShingle	Characteristic time Counting statistics Different sizes Electrostatic repulsion Extinction spectra Glass substrates Gold Nanoparticles Saturation values Exponential functions Glass Oligomers Substrates Nanoparticles Scarpettini, Alberto F. Bragas, Andrea Verónica Coverage and aggregation of gold nanoparticles on silanized glasses
topic_facet	Characteristic time Counting statistics Different sizes Electrostatic repulsion Extinction spectra Glass substrates Gold Nanoparticles Saturation values Exponential functions Glass Oligomers Substrates Nanoparticles
description	We study the dynamics of the coverage and aggregation of gold nanoparticles over organosilanized glass substrates for different sizes of nanoparticles. We present measurements of extinction spectra and nanoparticle counting statistics and demonstrate that both methods are equivalent describing those processes. We introduce models that describe the mentioned dynamics, which are characterized by an exponential-like function with two relevant parameters: a saturation value and a characteristic time. The electrostatic repulsion plays a significant role in both processes. The aggregation is dominated by the mobility of the isolated nanoparticles, which first join in dimers and, further in time, in clusters of higher number of nanoparticles. © 2010 American Chemical Society.
author	Scarpettini, Alberto F. Bragas, Andrea Verónica
author_facet	Scarpettini, Alberto F. Bragas, Andrea Verónica
author_sort	Scarpettini, Alberto F.
title	Coverage and aggregation of gold nanoparticles on silanized glasses
title_short	Coverage and aggregation of gold nanoparticles on silanized glasses
title_full	Coverage and aggregation of gold nanoparticles on silanized glasses
title_fullStr	Coverage and aggregation of gold nanoparticles on silanized glasses
title_full_unstemmed	Coverage and aggregation of gold nanoparticles on silanized glasses
title_sort	coverage and aggregation of gold nanoparticles on silanized glasses
publishDate	2010
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07437463_v26_n20_p15948_Scarpettini http://hdl.handle.net/20.500.12110/paper_07437463_v26_n20_p15948_Scarpettini
work_keys_str_mv	AT scarpettinialbertof coverageandaggregationofgoldnanoparticlesonsilanizedglasses AT bragasandreaveronica coverageandaggregationofgoldnanoparticlesonsilanizedglasses
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Coverage and aggregation of gold nanoparticles on silanized glasses

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