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Phenazines exhibit intriguing vibration‐induced emission (VIE) owing to the fast intrinsic vibration of benzo[a,c]phenazine moiety. For the first time, a phenazine‐based ratiometric fluorescent probe DBPST is developed for recognizing Hg2+ via restriction of VIE. Upon binding with Hg2+, DBPST demonstrates two well‐resolved emission peaks (over 130 nm) with a wide tuning color and affords a large...
A novel red-emitting chemosensor BCTT has been developed for the detection of Hg2+ and CN− in DMF-water solution with high sensitivity and selectivity. It exhibited a ‘turn-on’ fluorescence upon binding with Hg2+ based on its AIE properties and a ‘turn-off’ response to CN− due to the nucleophilic addition of CN− to the dicyanovinyl group with visible color changing from yellow to colorless. Remarkably,...
Two colorimetric and fluorometric probes, namely 2a and 2b, based on N,N′-disubstituted-dihydrophenazine analogues for rapid detection of Hg2+ with high sensitivity and selectivity were designed and synthesized by Heck coupling reaction. The responsive optical properties of the two sensors were investigated by UV–vis absorption and fluorescence spectroscopy in THF solution and 2a–b were found to be...
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