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Nanocrystalline Films of Au−Ag, Au−Cu, and Au−Ag−Cu Alloys Formed at the Organic−Aqueous Interface

Agrawal, Ved Varun and Mahalakshmi, P and Kulkarni, G. U. and Rao, C. N. R. (2005) Nanocrystalline Films of Au−Ag, Au−Cu, and Au−Ag−Cu Alloys Formed at the Organic−Aqueous Interface. Langmuir, 22 (4). pp. 1846-1851.

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Abstract

By the reaction of the appropriate organometallic precursors and tetrakishydroxymethyl phosphonium chloride (THPC) at the toluene−water interface, we have prepared nanocrystalline films of Au−Ag and Au−Cu alloys with a range of compositions. The films have been characterized by X-ray diffraction, electron microscopy, optical spectroscopy, and other techniques, besides compositional analysis. The particle size of the nanocrystals in the films varies with the composition. The surface plasmon band of the alloy films as well as of the organosols obtained by the disintegration of the films by the addition of an alkanethiol show the expected composition dependence. It has been possible to prepare the nanocrystalline films of a ternary Au−Ag−Cu alloy.

Item Type:Article
Subjects:Material Science > Nanochemistry
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:3454
Deposited By:JNCASR
Deposited On:20 Jan 2009 09:54
Last Modified:06 May 2009 10:48

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