Dual ligand co-functionalized fluorescent gold nanoclusters for the “turn on” sensing of glutathione in tumor cells

between Au NCs and GSH, the present "turn on" approach offers a high sensitivity and excellent selectivity toward GSH detection with a detection limit of 9.7 nM. More importantly, this "turn on" approach could also be successfully applied for visualizing and monitoring the changes in the intracellular GSH level in Hep G2 cells, providing available potential for diagnostic applications.