Ultrasmall glutathione-protected Au/Cu and their alloy nanoclusters with specific ROS generation
Abstract
In this study, three glutathione (GSH)-protected nanoclusters ([Au5(SG)3]−, [Au9Cu2(SG)7]3− and [Cu7(SG)5]3+) were synthesized and characterized by ESI-MS, EPR, NMR and XPS. Each cluster exhibits a specificity in generating a distinct reactive oxygen species (ROS), specifically hydroxyl radicals (˙OH), singlet oxygen (1O2), or superoxide anions (O2˙−), under ambient conditions. This unique performance highlights not only the clusters’ structural and functional specificity in ROS generation, but also their promising potential for advancing bioclinical applications.

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