Department of PhysicsDepartment of Chemistry2024-11-0920120959-942810.1039/c2jm31959d2-s2.0-84863648420https://hdl.handle.net/20.500.14288/3807Colloidally stable and highly luminescent near-IR emitting Ag2S quantum dots (NIRQDs) were prepared by a very simple aqueous method using 2-mercaptopropionic acid (2MPA) as a coating. Emission of Ag2S-2MPA NIRQDs can be tuned between 780 and 950 nm. These NIRQDs have photoluminescence quantum yields (PLQY) around 7–39% and exhibit excellent cytocompatibility even at 600 mg mL 1 in NIH/3T3 cells. With such improved properties, Ag2S-2MPA NIRQDs have a great potential in practical bio-applications.pdfPhysical chemistryJournal Article1364-5501https://doi.org/10.1039/c2jm31959d305966200050Q1NOIR00099