The manipulation of elemental composition of nanoalloys or nanomaterials has led to invaluable discoveries with potential future applications. The properties of molecular gold nanoparticles can be modified upon successful copper doping. Such thiolate protected gold-copper nanoalloys would have drastic changes in properties such as electronic and catalytic in contrast to monometallic gold nanocluster itself1. Here we report a one phase synthesis to form gold-copper nanoclusters and propose probable sites for incorporation of copper atoms into the thiolate protected gold nanocluster. Mass spectrometric studies illustrate the foreign atom incorporation by the mass to charge ratio difference between two neighboring peaks. By adopting various separation techniques such as solvent fractionation, gold-copper nanoclusters can be isolated and characterized. Au144-xCux(SR)60 alloy nanomolecules were synthesized and characterized by using ESI-MS and optical spectroscopy.

Synthesis and characterization of gold � copper bimetallic nanoalloys

247th National Meeting (2014)

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