Figure 8.

Fluorescence spectra of BSA (5 μM) in the presence of increasing concentrations of (a) L (0–170 μM) and (b) [Ag₂L₂]²⁺ (0–110 μM). Inset: Stern–Volmer plot of I₀/I−1 vs. [L] or [[Ag₂L₂]²⁺] for the titration of BSA; ▪, experimental data points; solid line, linear fitting of the data.