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Title: Formation and Ordering of Gold Nanoparticles at the Toluene-Water Interface
Authors: Sanyal, Milan K
Agrawal, Ved V
Bera, Mrinal K
Kalyanikutty, K P
Daillant, Jean
Blot, Christian
Kubowicz, S
Konovalov, Oleg
Rao, C N R
Keywords: Liquid-Liquid Interface
Issue Date: 14-Feb-2008
Publisher: American Chemical Society
Citation: Journal of Physical Chemistry C 112(6), 1739-1743 (2008)
Abstract: Microscopic measurements that provide direct information in nanometer length scales are essential to obtain a proper understanding of the interfacial reactions that form nanostructured materials. We present here the results of a synchrotron X-ray scattering study of the formation and ordering of gold nanoparticles at the toluene-water interface through a reduction reaction. The observed X-ray reflectivity and diffuse scattering data show the formation of a monolayer of "magic clusters" at the water-toluene interface. Each cluster consists of 13 nanoparticles with about 12 angstrom diameter, similar to Au-55 nanoparticles, with about an 11 angstrom organic layer and an in-plane cluster-cluster separation of 180 angstrom. The electron density profile of the monolayer of these clusters exhibits three layers of nanoparticles as a function of depth that evolves with time.
Description: Restricted Access
Other Identifiers: 1932-7447
Appears in Collections:Research Papers (Prof. C.N.R. Rao)

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