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Coumarin derivatives containing 8-benzothiazole (C-2) and its difluoroboron bound derivative (C-3) were prepared. Both derivatives show dual emission at 322nm and 513nm and large Stokes shift (188nm), compared to the unsubstituted coumarin (C-1), which shows emission at 356nm with small Stokes shift of 46nm. C-2 and C-3 show fluorescence in solid state, in contrast the C-1 is non-fluorescent in the...
We have synthesized a styryl boron-dipyrromethene (BODIPY)/2,4-dinitrobenzenesulfonyl (DNBS) dyad based red-emitting molecular probe for specific detection of cysteine among the biological thiols. The probe shows intensive absorption at 556nm and the probe is non-fluorescent. The DNBS moiety can be cleaved off by thiols, the red emission of the BODIPY fluorophore at 590nm is switched on, with an emission...
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