Abstract

The atomically precise gold (Au) and silver (Ag) nanoclusters (NCs) have gotten much attention because of their molecule-like properties with ultra-small size, strong fluorescence, excellent photostability, water solubility, low toxicity, and biocompatibility. Because of their unique properties and facile synthetic approaches, the Au and Ag-based nanoclusters are applied in different fields, such as sensing and biosensing, bioimaging, catalysis, solid-state lighting, drug and gene delivery, immunostimulatory agents, biomedical applications, and so on. This chapter was narrated to discuss the important synthetic procedures, properties, and sensing applications of fluorescent AuNCs, AgNCs, and their alloy NCs.

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