科研之友
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摘要
A triphenylamine-based fluorescent probe 1 with larger Stokes shift (similar to 141 nm) has been synthesized, which can make an efficient nucleophilic addition by reacting with CN- in water. Upon addition of CN-, the red fluorescence of 1 was distinctly quenched. Importantly, 1 exhibits a highly selective response toward CN- over other anions in water and a high sensitivity (detection limit <= 11 nM). More-over, it has potential application to track CN- levels in living cells by confocal laser scanning microscopy (CLSM).
