Core-Shell Structures Formed by the Solvent-Controlled Precipitation of Luminescent CdTe Nanocrystals on Latex Spheres

Uniform complete shells in one step on a time scale of minutes can be achieved by solvent-controlled precipitation of nanocrystals on the surface of colloidal particles. The thickness of the shells can be effectively controlled through the proper choice of the concentration ratio of colloidal particles serving as cores and the precipitated species. The Figure shows a TEM image of latex spheres covered by uniform shells of CdTe nanocrystals.