Figure 9.

a Fluorescence emission gelatin-AuNPs solutions (1–3, Excitation at 350 nm) and gelatin (4, Excitation at 335 nm) at the concentration of gelatin is 0.4 wt%, the concentrations of AuNPs are (1) 0.0006 M, (2) 0.0004 M, (3) 0.0002 M; b Stern–Volmer plot for gelatin-AuNPs.

Liu et al. Nanoscale Res Lett 2011 6:22   doi:10.1007/s11671-010-9756-1