One-pot hydrothermal synthesis of water-dispersible ZnS quantum dots modified with mercaptoacetic acid

- A facile one-pot hydrothermal method to synthesize ZnS(MAA) QDs.
- Synthesis and in situ modification of ZnS(MAA) QDs in a single process.
- Controllable ZnS(MAA) QD size in the range 4-10 nm by varying the reaction time.
- Excellent dispersibility of ZnS(MAA) QDs in water.
- 50% of the fluorescence signal intensity retained after storage for 6 months.