Heterodimers of Nanoparticles:Formation at a Liquid-Liquid Interface and Particle-Specific Surface Modification by Functional Molecules

摘要

This communication describes a simple methodology to create heterodimers of nanoparticles and to demonstrate particle-specific functionalization of such nanostructures.The rapid development of applications of nanomaterials,ranging from electro-optics to biology,1-2 demands sophisticated controls over their inherent properties,which usually rely on the composition and shape of nanomaterials,3 as well as their appropriate surface modifications.While the prescription of starting materials easily provides a precise composition of a nanostructure,4 shape-controlled chemical synthesis of nanomaterials has only achieved limited success.5 Despite the increased number of reports on the synthesis of shape-controlled nanostructures,there are few reports on the synthesis of hetero-structures that are smaller than 20 nm.