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A new fluorescence turn-on chemosensor 1 based on quinoline and naphthalimide was prepared and its anion sensing toward various anions behavior was explored in this paper. Sensor 1 exhibited a highly selective fluorescent response toward HSO4− with an 8-fold fluorescence intensity enhancement in the presence of 10equiv. of HSO4− in DMSO-H2O (1/1, v/v) solution. The sensor also displayed high sensitivity...
In this paper, a thioacetal chemosensor 1 incorporating simultaneously a carbazole moiety and an azobenzene moiety was synthesized. Among other metal ions, Hg2+ proved to be able to selectively induce both color and fluorescence changes of 1. The mechanism of Hg2+-promoted cleavage of thioacetal was confirmed by 1H NMR experiments. Upon the addition of Hg2+ into the yellow CH3CN/H2O solution of 1,...
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