Cation Exchange-Based Facile Aqueous Synthesis of Small, Stable, and Nontoxic Near-Infrared Ag2Te/ZnS Core/Shell Quantum Dots Emitting in the Second Biological Window
Retraction of ‘A facile cation exchange-based aqueous synthesis of highly stable and biocompatible Ag2S quantum dots emitting in the second near-infrared biological window’ by Rijun Gui et al., Dalton Trans., 2014, 43, 16690–16697, DOI: 10.1039/C4DT00699B.
A layer-by-layer epitaxial method was developed to synthesize water-soluble, near-infrared (NIR)-emitting type-II core–shell CdTe/CdS quantum dots (QDs) via employing glutathione-capped CdTe QDs as core templates, CdCl2 and thiourea as shell precursors.
Expression of concern for ‘Layer-by-layer aqueous synthesis, characterization and fluorescence properties of type-II CdTe/CdS core/shell quantum dots with near-infrared emission’ by Rijun Gui et al., RSC Adv., 2013, 3, 20959–20969. DOI: 1039/C3RA43120G
The present study reports an aqueous synthesis approach towards Cu-In-Se/ZnS quantum dots with emissions in the near-infrared spectral range. The photoluminescence of the dots can be effectively controlled through adjusting...
Retraction: A facile cation exchange-based aqueous synthesis of highly stable and biocompatible Ag2S quantum dots emitting in the second near-infrared biological window