Figure 2.
Fluorescence response of probe 1 toward H2S and other thiols. 1) 1 only (100 μM), 2) 1 (100 μM) + NaHS (50 μM); 3) 1 (100 μM) + cysteine (50 μM); 4) 1 (100 μM) + glutathione (50 μM), 5) 1 (100 μM) + glutathione (50 μM) + NaHS (50 μM); measured in a mixture of PBS buffer (pH 7.4) and CH3CN (9:1), λex 465 nm, 25 °C.