Fig 8.

Imaging H₂S in live cells with AIE-S-Cu. Intact HeLa cells were treated with a combination of AIE-S (5 μM) and CuCl₂ (3 μM) for 2 h and then washed quickly with PBS for imaging (a). The cells were then treated with Na₂S (100 μM) for 15 min which resulted in a dramatic increase in intracellular fluorescence intensity (b). Images were collected upon excitation using the corresponding filters for DAPI (blue). (c, d): Bright field images of live cells in panel a and b.