Room-temperature synthesis of nanocrystalline Ag₂S and its nanocomposites with gold

This manuscript demonstrates a room-temperature synthesis for Ag ₂S nanocrystals and their nanocompsites with Au and the Au could be deposited only at a single site on each Ag₂S seed nanocrystal, where in contrast, Ag₂S could grow homogeneously on Au seed nanocrystals, resulting in core-shell Au@Ag₂S nanoparticles, which still possessed the optical properties of Au nanocrystals; this facile synthesis could be employed towards fabricating a variety of nanocomposites with interesting structures and tailored functionalities.