Authors: Bala, Tanushree; Joshi, Bhagyashree; Iyer, Neelima; Sastry, Murali; Prasad, B.L.V.

Source: Journal of Nanoscience and Nanotechnology, Volume 6, Number 12, December 2006 , pp. 3736-3745(10)

Publisher: American Scientific Publishers

Abstract:

Development of simple and efficient protocol for the synthesis of Ni nanoparticles in aqueous media and their subsequent phase transfer to organic media is reported. The synthesis of nickel nanoparticles in aqueous medium is accomplished by reducing the nickel nitrate with sodium borohydride in presence of oleic acid. It results in the formation of nickel nanoparticles capped with oleic acid. The pristine oleic acid capped nickel nanoparticles were then phase transferred to nonpolar solvents such as toluene using stearic acid. The phase transfer was effective probably due to the space exchange between the oleic acid moiety and stearic acid molecules. The hydrophobized Ni thus obtained was organized at the air-water interface and it was observed that by controlling the pressure and concentration of hydrophobized Ni nanoparticles at air-water interface, linear ribbon like assemblies could be obtained. The organization process was followed by surface pressure-area isotherm measurement and Brewster Angle Microscopy.

Keywords: NI NANOPARTICLES; PHASE TRANSFER; ASSEMBLY; LANGMUIR-BLODGETT TECHNIQUE

Document Type: Research article

DOI: http://dx.doi.org/10.1166/jnn.2006.615

Publication date: 2006-12-01

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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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