Volume 133, Issue 25
Article

Size-controlled gold nanoparticles inside polyacrylamide microgels

M. Díaz

M. Díaz

Departamento de Ciencias Tecnológicas, Universidad de Guadalajara, Avenida Universidad 1115, 47820, Ocotlán, Jalisco, 47820 Mexico

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A. Barrera

A. Barrera

Departamento de Ciencias Básicas, Universidad de Guadalajara, Avenida Universidad 1115, 47820, Ocotlán, Jalisco, 47820 Mexico

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S. López-Cuenca

S. López-Cuenca

Instituto Tecnológico Superior de Tequila, Joel Magallanes Rubio 501, Col. Lomas del Paraíso, 46400 Tequila, Jalisco, Mexico

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S. Y. Martínez-Salazar

S. Y. Martínez-Salazar

Departamento de Ciencias Básicas, Universidad de Guadalajara, Avenida Universidad 1115, 47820, Ocotlán, Jalisco, 47820 Mexico

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M. Rabelero

M. Rabelero

Departamento de Ingeniería Química, Universidad de Guadalajara, Boulevard M. García Barragán 1451, 44430 Guadalajara, Jalisco, Mexico

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I. Ceja

I. Ceja

Departamento de Física, Universidad de Guadalajara, Boulevard M. García Barragán 1451, 44430 Guadalajara, Jalisco, Mexico

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V. V. A. Fernández

V. V. A. Fernández

Departamento de Ciencias Tecnológicas, Universidad de Guadalajara, Avenida Universidad 1115, 47820, Ocotlán, Jalisco, 47820 Mexico

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J. Aguilar

Corresponding Author

J. Aguilar

Departamento de Ciencias Tecnológicas, Universidad de Guadalajara, Avenida Universidad 1115, 47820, Ocotlán, Jalisco, 47820 Mexico

Correspondence to: J. Aguilar (E-mail: [email protected])Search for more papers by this author
First published: 15 March 2016
Citations: 10

ABSTRACT

Gold nanoparticles (AuNPs) of different sizes were synthesized into a crosslinked network of polyacrylamide (PAAm) microgels. PAAm was prepared by means of semicontinuous inverse heterophase polymerization under monomer-starving conditions with a z-average particle size of 384 ± 18 nm. AuNPs with controlled size were obtained by a reduction reaction of Au+3 to Au0 from a gold(III) chloride trihydrate (HAuCl4) solution inside microgel the crosslinked network (AuNP-PAAm). The reduction reaction was verified for 2 h by ultraviolet–visible spectroscopy (UV–vis). AuNP–PAAm exhibited a particle size between 288 ± 12 and 230 ± 15 nm at HAuCl4 concentrations of 0.4 and 1.3 mM, respectively. The AuNP–PAAms were observed by transmission electron microscopy, and their sizes were determined to be 19 ± 2 nm (1.3 mM) and 17 ± 2 nm (1.1 mM). With UV–vis spectroscopy, we detected the formation of AuNPs at a wavelength of 552 nm, and with X-ray diffraction analysis, we proved that the crystal arrangement was face-centered cubic. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43560.

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