Authors: Tan, Yong; Ding, Shaohua; Wang, Yi; Jing, Aihua; Qian, Weiping

Source: Journal of Nanoscience and Nanotechnology, Volume 6, Number 1, January 2006 , pp. 262-264(3)

Publisher: American Scientific Publishers

Abstract:

We compared the optical properties of gold nanoparticles (GNPs) in various solvents with those of strawberry-like composite particles (Au/SiO₂) consisting of a silica core and single attached GNPs. The results show that Au/SiO₂ without any surfactant could regenerate well optical properties of individual GNPs in alcoholic solvents. By the electrophoretic light-scattering measurements, the high dispersibility of Au/SiO₂ composite particles dispersed in alcoholic solvents has been demonstrated. In addition, using Derjaguin-Landau-Verwey-Overbeek (DLVO) theory, we proposed a possible mechanism to qualitatively account for the dispersibility of Au/SiO₂ in organic solvents such as alcoholic solvents and cyclohexane, which may provide an opportunity to manipulate optical signals of single nanoparticle in organic solvents.

Keywords: INDIVIDUAL GOLD NANOPARTICLES; AU/SIO2; OPTICAL PROPERTIES; DISPERSIBILITY; COMPOSITE PARTICLES

Document Type: Short communication

DOI: http://dx.doi.org/10.1166/jnn.2006.052

Publication date: 2006-01-01

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• Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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