A fluorescent probe for sensing ferric ions in bean sprouts based on l-histidine-stabilized gold nanoclusters

Fluorescent l-histidine-stabilized Au NCs were successfully synthesized by a green one-pot process since l-histidine played dual roles as both a stabilizer and a reducing agent. Moreover, the prepared Au NCs were used as a novel fluorescent probe for selective sensing of ferric ions in bean sprouts.