A turn-on fluorescent probe based on indolizine for the detection of sulfite

Abstract

Numerous SO32−/HSO3− fluorescent probes have been reported based on various mechanisms. However, most probes are constructed from classic dyes such as coumarin, BODIPY, and cyanine. The development of a new...

An Imidazo[1,5-a]pyridine Benzopyrylium-Based NIR Fluorescent Probe with Ultra-Large Stokes Shifts for Monitoring SO2

“…SO 2 can dissolve easily in water to form its derivatives bisulfite (HSO 3 − ) and sulfite (SO 3 2− ), so the physiological functions of SO 2 can be attributed to its derivatives (HSO 3 − /SO 3 2− ). However, a high level of endogenous SO 2 , generated by the oxidation of H 2 S and thiol-containing amino acids in mitochondria, may bring about neurological disorders, cancers and other diseases [ 5 , 6 , 7 , 8 ]. Hence, it is greatly important to establish sensitive and rapid methods for SO 2 detection to further gain insight into its functions in biological systems, especially in mitochondria.…”