A new strategy for synthesizing AgInS2 quantum dots emitting brightly in near-infrared window for in vivo imaging

- Water-dispersible AgInS2 QDs with bright near-infrared emission were synthesized.
- Multidentate polymer was utilized as a compact capping ligand for the AgInS2 QDs.
- The AgInS2 QDs possess good photostability and can be well used for in vivo imaging.