@article { ISI:000242601100010,
	title = {Assembly of phase transferred nickel nanoparticles at air-water interface using Langmuir-Blodgett technique},
	journal = {Journal of Nanoscience and Nanotechnology},
	volume = {6},
	number = {12},
	year = {2006},
	month = {DEC},
	pages = {3736-3745},
	publisher = {AMER SCIENTIFIC PUBLISHERS},
	type = {Article},
	address = {25650 NORTH LEWIS WAY, STEVENSON RANCH, CA 91381-1439 USA},
	abstract = {<p>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 borohydricle 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.</p>},
	keywords = {assembly, Langmuir-Blodgett technique, Ni nanoparticles, Phase transfer},
	issn = {1533-4880},
	doi = {10.1166/jnn.2006.615},
	author = {Bala, Tanushree and Joshi, Bhagyashree and Iyer, Neelima and Sastry, Murali and Bhagavatula L. V. Prasad}
}
@article { ISI:000264897200052,
	title = {Shape and size selective separation of gold nanoclusters by competitive complexation with octadecylamine monolayers at the air-water interface},
	journal = {Journal of Colloid and Interface Science},
	volume = {333},
	number = {1},
	year = {2009},
	month = {MAY},
	pages = {380-388},
	publisher = {ACADEMIC PRESS INC ELSEVIER SCIENCE},
	address = {525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA},
	abstract = {<p>The paper presents a time-dependent study of shape-dependent preferential complexation of gold nanoparticles to the octadecyl amine (ODA) monolayers at the air-water interface. Room temperature reduction of chloroaurate ions using lemon grass leaf extract yields a Mixture of spherical and triangular nanoparticles, which were used for this study. These nanoparticles have a net negative charge on their surface due to the presence of biomolecules from plant extract and thus a strong attractive electrostatic interaction with the positively charged ODA monolayers drives the complexation process. The extent of preferential complexation of the gold nanoparticles to the ODA monolayers is a function of the charge on the particles and the relative mobility of the nanoclusters in the medium. The complexation process has been followed in real time by a host of techniques such as surface pressure-area (pi-A) isotherms, UV-vis-NIR spectroscopy and Brewster angle microscopy. The charge and mobility of the gold nanoparticles was confirmed by measurement of their electrophoretic mobility. Langmuir-Blodgett films of the nanogold-ODA composites have been characterized by UV-vis-NIR spectroscopy, Fourier transform infrared spectroscopy, and transmission electron microscopy. These measurements clearly indicate that the cluster mobility and complexation increase with decreasing cluster size. In the competitive complexation process of large and small gold particles, it was observed that some bigger gold particles were also incorporated into the amine matrix even though the cluster mobility is higher for smaller gold particles. (c) 2009 Elsevier Inc. All rights reserved.</p>},
	keywords = {Competitive complexation, gold nanoparticles, Langmuir-Blodgett technique, ODA monolayer},
	issn = {0021-9797},
	doi = {10.1016/j.jcis.2008.12.076},
	author = {Pasricha, Renu and Singh, Amit and Sastry, Murali}
}
