Figure 3.

Fluorescence emission spectra of SeP2 (10 μM) in the presence of varied concentrations of Na₂S (0, 0.5, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15 μM). The reactions were carried out for 5 min at room temperature in CH₃CN/PBS buffer (10 mM, pH 7.4, 1:1, v/v). Data were acquired with excitation at 498 nm for SeP2.