Synthesis of glutathione-coated quantum dots

This paper is focused on the preparation and characterization of glutathione (GSH) coated near infrared quantum dots (QDs). The preparation method is based on surface modification of hydrophobic core/shell CdSeTe/CdS by glutathione, which makes the QDs water-soluble. Moreover, tripeptide GSH provides a biocompatible barrier against toxic cadmium ions of QDs core. These GSH-coated NIR QDs are suitable for in vivo imaging.