A novel fluorescent probe (XL-1) exhibited over 50-fold enhanced fluorescence in the presence of Hg2+ and no interference could be produced by other metal ions, anions and amino acids.
The ultrabright AuNCs@AMP are used as fluorescence probe to detect lactate dehydrogenase (LDH) with high sensitivity and selectivity, showing an extremely low detection limit of 0.2 nM (26 pg μL−1, 0.8 U L−1).
A l-amino acid oxidase (LAAOx) capped gold nanocluster (LAAOx@AuNCs) fluorescent probe was used for rapid, highly selective and sensitive detection of CN−.