Sonochemical synthesis of highly fluorescent glutathione-stabilized Ag nanoclusters and S2− sensingElectronic supplementary information (ESI) available: Experimental procedures of fluorescent AgNCs synthesis and Fig. S1-S6. See DOI: 10.1039/c2nr30718a

A facile one-pot sonochemical approach is presented to prepare highly blue-emitting Ag nanoclusters (AgNCs) using glutathione as a stabilizing agent in aqueous solution. The as-prepared AgNCs can be applied in the selective detection of S 2− with a limit of detection of 2 nM based on fluorescence quenching. One-pot sonochemical preparation of highly fluorescent glutathione-stabilized Ag nanoclusters in aqueous solution and S 2− sensing are presented.