Two-step synthesis of high-quality water-soluble near-infrared emitting quantum dots via amphiphilic polymers.
High-quality water-soluble near-infrared emitting quantum dots (QDs) are synthesized using a two-step approach for the first time. The CdS shell efficiently increases the structural stability of PbS QDs during water transfer and leads to good photostability and a significantly enhanced quantum yield as high as 30% in buffer.
Zhao
Haiguang
H
Institut National de la Recherche Scientifique, University of Quebec, Canada. haiguang.zhao@emt.inrs.ca
Wang
Defa
D
Zhang
Teng
T
Chaker
Mohamed
M
Ma
Dongling
D
D019187:Cadmium Compounds / Q000737:chemistry*; D057927:Hydrophobic and Hydrophilic Interactions; D007854:Lead / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D011108:Polymers / Q000737:chemistry*; D045663:Quantum Dots; D012995:Solubility; D019265:Spectroscopy, Near-Infrared; D013440:Sulfides / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
D019187:Cadmium Compounds; D011108:Polymers; D013440:Sulfides; C034939:cadmium sulfide; D014867:Water; C018391:lead sulfide; D007854:Lead