Coverage and aggregation of gold nanoparticles on silanized glasses

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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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Autor principal: Scarpettini, A.F
Otros Autores: Bragas, Andrea Verónica
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 2010
Acceso en línea:Registro en Scopus
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Biblioteca Central Dr. Luis F. Leloir (FCEN) de Universidad de Buenos Aires
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100 1 |a Scarpettini, A.F. 
245 1 0 |a Coverage and aggregation of gold nanoparticles on silanized glasses 
260 |c 2010 
270 1 0 |m Scarpettini, A. F.; Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina; email: ascarpet@df.uba.ar 
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506 |2 openaire  |e Política editorial 
520 3 |a 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.  |l eng 
593 |a Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina 
593 |a IFIBA, Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina 
690 1 0 |a CHARACTERISTIC TIME 
690 1 0 |a COUNTING STATISTICS 
690 1 0 |a DIFFERENT SIZES 
690 1 0 |a ELECTROSTATIC REPULSION 
690 1 0 |a EXTINCTION SPECTRA 
690 1 0 |a GLASS SUBSTRATES 
690 1 0 |a GOLD NANOPARTICLES 
690 1 0 |a SATURATION VALUES 
690 1 0 |a EXPONENTIAL FUNCTIONS 
690 1 0 |a GLASS 
690 1 0 |a OLIGOMERS 
690 1 0 |a SUBSTRATES 
690 1 0 |a NANOPARTICLES 
700 1 |a Bragas, Andrea Verónica 
773 0 |d 2010  |g v. 26  |h pp. 15948-15953  |k n. 20  |p Langmuir  |x 07437463  |t Langmuir 
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