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A novel simple and readily synthesized turn-on fluorescent probe 4-(benzo[d]thiazol-2-yl)-1,3-phenylene bis(2-chloroacetate) (BPBC) for cysteine (Cys) was reported. This probe was designed based on an excited-state intramolecular proton transfer (ESIPT) dye: benzothiazole, and two chloroacetate groups present in benzothiazole as the reaction sites for Cys. It shows high selectivity and sensitivity...
Developing fluorescent probes to image thiols in the living system may provide powerful tools to study the functions of thiol-containing biological molecules. In this study, we report the design and evaluation of a novel turn-on fluorescent probe NQNO for selective detection of thiols in living cells. By introducing an ortho-aldehyde group to NNO, a conventional compound representing a class of thiol-imaging...
In this work, sulfur and nitrogen co-doped carbon dots (S,N-CQDs) as highly selective fluorescent probe for silver ion (Ag+) and cysteine (Cys) detection were designed and synthesized directly from citric acid and thiamine hydrochloride via a one-step hydrothermal protocol in 63.8% quantum yield. This probe enabled selective detection of Ag+ with a linear range of 0–10 and 10–250μM and a limit of...
A novel turn-on fluorescent probe, which coumarin-fused coumarin was used as fluorophore to link with 2, 4- dinitrodiphenyl ether moiety that has high selectivity and sensitivity for H2S and thiols, was designed and synthesized. Our probe YB can sensitively react with H2S and GSH to release free fluorophore with strong fluorescence signals. The probe YB could use as a significant molecular imaging...
In this study, 3-ethyl-2-methylbenzothiazolium iodide and nitrophenyl-2-furancarboxaldehyde were used to synthesize a new fluorescent and chromogenic dual channel signal cyanide ion probe M, which showed high selectivity towards CN- analysis and strong antijamming capability towards other anions. When CN- is present in the solution, probe M indicates an obvious blue shift in UV–vis absorbance spectra,...
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