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Imidazo[1,5-α]pyridine-based fluorescent probe with a large Stokes shift for specific recognition of sulfite

2019; Elsevier BV; Volume: 225; Linguagem: Inglês

10.1016/j.saa.2019.117508

1873-3557

Song Chen, Peng Hou, Jing‐Wen Sun, Haijun Wang, Lei Liu,

Luminescence and Fluorescent Materials

By taking advantage of the intramolecular charge transfer (ICT) process, we presented a novel fluorescent probe IPY-SO2 based on imidazo[1,5-α]pyridine derivative for detecting SO32- with a low detection limit (70 nM). Combining its favorable turn-on fluorescence feature (75-fold), rapid response (5 min), high selectivity, large Stokes shift (174 nm) and low cytotoxicity, IPY-SO2 was successfully applied to imaging SO32 in living MCF-7 cells and zebrafish.