A novel endoplasmic reticulum-targeted ratiometric fluorescent probe based on FRET for the detection of SO2 derivatives

Recent progress in small-molecule fluorescent probes for endoplasmic reticulum imaging in biological systems

“…17), based on FRET for the detection of SO 2 derivatives. 105 In this probe, a naphthalimide derivative was the donor and benzoindole-based hemicyanine was the acceptor. This probe itself exhibited the FRET process and emitted fluorescence at 610 nm.…”

Carbazole-based near-infrared-emitting fluorescence probe for the detection of bisulfite in live animals and real food samples

“…28 For the past few years, many fluorescent probes for HSO 3 − have been developed based on specific recognition mechanisms, including the nucleophilic reaction with the CN bond and the aldehyde group, 29–31 hydrogen bonding, 32,33 and 1,2-addition reaction or Michael addition with the electron-deficit CC bond. 34–36 Nevertheless, most of them still have several issues, including short emission wavelengths, 37–39 poor sensitivity and selectivity 40–42 and long response time (5–20 min). 43–45 The above shortcomings make it difficult to achieve real-time monitoring of HSO 3 − in live animals and real food samples quickly and accurately.…”

A NIR Fluorescent Probe Benzopyrylium Perchlorate-based for Visual Sensing and Imaging of SO2 Derivatives in Living Cells

“…SO 2 in the body can be inhaled not only through the respiratory tract, but also through diet and medication. Increasing evidences demonstrated that endogenous SO 2 and its derivatives (HSO 3 − / SO 3 2− ) take part in some physiological processes such as vasorelaxant, antioxidative effects, and regulating cardiovascular structure and function [10][11][12][13]. In a manner of speaking, the SO 2 biological function can be replaced to HSO 3 − / SO 3 2− .…”