A ratiometric and colorimetric fluorescent probe designed based on FRET for detecting SO32-/HSO3- in living cells and mice.

Abstract Based on the principle of FRET, we have developed a ratiometric and colorimetric fluorescent probe TFBN, which can specifically recognize SO2 derivatives (SO32−/HSO3−), and exhibit a transition from red to green fluorescence under 405 nm excitation. The probe TFBN owns the advantages of short response time (