Imidazo[1,5-α]pyridine-based Fluorescent Probe with a Large Stokes Shift for Specific Recognition of Sulfite
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By taking advantage of the intramolecular charge transfer (ICT) process, we presented a novel fluorescent probe IPY-SO based on imidazo[1,5-α]pyridine derivative for detecting SO 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-SO was successfully applied to imaging SO in living MCF-7 cells and zebrafish.
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