Nano Archive

Peculiarities of gold nanoparticle formation in chitosan solutions doped with HAuCl4

Smirnova, T. and Mochalova, A. and Kuz'micheva, T. and Fedoseeva, E. (2010) Peculiarities of gold nanoparticle formation in chitosan solutions doped with HAuCl4. Nanotechnologies in Russia, 5 (1). pp. 78-82.

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Official URL: http://dx.doi.org/10.1134/S1995078010010088

Abstract

The possibility of preparing gold dispersions with a narrow and controlled size distribution of nanoparticles in the process of a UV-induced reduction of Au3+ of HAuCl4 in chitosan solutions by varying the polysaccharide macromolecule conformation is shown. Solutions with a spiral conformation of chitosan macromolecules are characterized by the formation of Au nanoparticles with smaller average sizes = 2 nm and a narrower distribution from 1 to 7 nm, when compared to the conformation of a statistical coil ( = 5 nm; from 2 to 14 nm, respectively). The particle shape in both cases is close to spherical. Nanodispersions are aggregately stable for no less than 160 days. Original Russian Text © L.A. Smirnova, T.A. Gracheva, A.E. Mochalova, T.A. Kuz’micheva, E.N. Fedoseeva, 2010, published in Rossiiskie nanotekhnologii, 2010, Vol. 5, Nos. 1–2.

Item Type:Article
ID Code:9200
Deposited By:Prof. Alexey Ivanov
Deposited On:13 May 2010 12:54
Last Modified:13 May 2010 13:19

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