Gold organosols

Gold organosols using alkane thiols as surfactants were first prepared by Schiffrin and co-workers [109] by phase transferring gold ions and carrying out reduction in the presence of thiols. Several workers have adopted this procedure to obtain thiolized metal nanocrystals [110-113]. 

In the literature, metal nanoparticles have been obtained in hydrocarbon media in different ways. Thus, Brust et al.5 synthesized thiol-derivatized gold nanoparticles in a two-phase liquid—liquid system by transferring the metal salt from the aqueous medium to toluene using tetraoctylammoniumbromide as the phase-transfer reagent. Thiol-derivatized nanoparticles of Au, Pt, and Ag have been prepared as organosols, by the... 

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