Synthesis of type II/type I CdTe/CdS/ZnS quantum dots and their use in cellular imaging

Water-soluble, stable quantum dots consisting of a CdTe core with shells of CdS and ZnS have been prepared using a simple successive injection of precursors in one-pot technique. The particles exhibited type II behaviour and were successfully used in imaging HeLa cells. © 2009 The Royal Society of Chemistry.