“…For H 2 O 2 and glucose detection, AuNCs based optical sensors have been developed by several groups (Chen and Baker, 2013;Hussain et al, 2011;Jin et al, 2011;Liu et al, 2010;Shiang et al, 2009;Wen et al, 2011). As in the aforementioned QDs based optical H 2 O 2 sensors, H 2 O 2 alters the surface ligand conditions of AuNCs, which leads to changes in the optical properties of the nanoclusters.…”