Size-controlled gold nanoparticles inside polyacrylamide microgels

被引：10

作者：

Diaz, M. ^{[1
]}

Barrera, A. ^{[2
]}

Lopez-Cuenca, S. ^{[3
]}

Martinez-Salazar, S. Y. ^{[2
]}

Rabelero, M. ^{[4
]}

Ceja, I. ^{[5
]}

Fernandez, V. V. A. ^{[1
]}

Aguilar, J. ^{[1
]}

机构：

[1] Univ Guadalajara, Dept Ciencias Tecnol, Ave Univ 1115, Ocotlan 47820, Jalisco, Mexico

[2] Univ Guadalajara, Dept Ciencias Basicas, Ave Univ 1115, Ocotlan 47820, Jalisco, Mexico

[3] Inst Tecnol Super Tequila, Joel Magallanes Rubio 501, Tequila 46400, Jalisco, Mexico

[4] Univ Guadalajara, Dept Ingn Quim, Blvd M Garcia Barragan 1451, Guadalajara, Jalisco, Mexico

[5] Univ Guadalajara, Dept Fis, Blvd M Garcia Barragan 1451, Guadalajara 44430, Jalisco, Mexico

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2016年 / 133卷 / 25期

关键词：

crosslinking; microgels; morphology; nanoparticles; nanowires; nanocrystals; swelling; HYDROGEL TEMPLATES; METAL; NANOCOMPOSITES; POLYMERIZATION; ACRYLAMIDE; PARTICLES; CATALYSIS; SURFACES; CRYOGEL;

D O I：

10.1002/app.43560

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

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 +/- 18nm. AuNPs with controlled size were obtained by a reduction reaction of Au+3 to Au-0 from a gold(III) chloride trihydrate (HAuCl4) solution inside microgel the crosslinked network (AuNP-PAAm). The reduction reaction was verified for 2h by ultraviolet-visible spectroscopy (UV-vis). AuNP-PAAm exhibited a particle size between 288 +/- 12 and 230 +/- 15nm at HAuCl4 concentrations of 0.4 and 1.3mM, respectively. The AuNP-PAAms were observed by transmission electron microscopy, and their sizes were determined to be 19 +/- 2nm (1.3mM) and 17 +/- 2nm (1.1mM). With UV-vis spectroscopy, we detected the formation of AuNPs at a wavelength of 552nm, and with X-ray diffraction analysis, we proved that the crystal arrangement was face-centered cubic. (c) 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43560.

引用

页数：7

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