The reaction of colloidal AuCu nanoparticles with dissolved sul-fur and bubbling oxygen in oleyl-amine at 172 °C yields phase-segregated colloidal Au−Cu2S het-erodimers. This prototype system demonstrates an alternative route to colloidal hybrid nanoparticles, which applies element-selective chemical reactions to alloy nanoparticles with preprogrammed compositions.
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Motl et al. (2012) studied this question.
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