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Title: Covalent and noncovalent functionalisation and solubilisation of nanodiamond
Authors: Maitra, Urmimala
Gomathi, A
Rao, C N R
Keywords: nanodiamond
covalent functionalisation
Nanoscale Diamond
Issue Date: 2008
Publisher: Taylor & Francis Ltd
Citation: Journal of Experimental Nanoscience 3(4), 271-278 (2008)
Abstract: Covalent functionalisation of nanodiamond has been carried out by employing several methods. One of them involves the reaction of acid-treated nanodiamond with thionyl chloride followed by reaction with a long-chain aliphatic amine to produce the amide derivative. The second method involves reaction of acid-treated nanodiamond with an organosilicon or organotin reagent such as hexadecyltrimethoxysilane, dibutyldimethoxytin, and perfluoro-octyltriethoxysilane. The products of covalent functionalisation produce excellent dispersions in CCl4 and toluene. SiO2- and SnO2- covered nanodiamond are obtained by heating the nanodiamond coated with the organosilane and the organotin reagents, respectively. By interaction of nanodiamond with surfactants such as sodium bis(2-ethylhexyl) sulphosuccinate (AOT), Triton X-100 (TX-100), polyvinyl alcohol (PVA), cetyltrimethylammonium bromide (CTAB), and tert-octylphenoxy poly(oxyethylene) ethanol (IGEPAL) gives good dispersions in water, the best dispersion with the lowest surfactant concentration being obtained with IGEPAL.
Description: Restricted Access
Other Identifiers: 1745-8080
Appears in Collections:Research Papers (Prof. C.N.R. Rao)

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