A highly selective fluorescent sensor for dual detection of Zn2+ and F- based on a new diarylethene

摘要

A new diarylethene derivative with a coumarin unit was synthesized. Its multi-functional fluorescent switching behaviors were investigated by the stimulation of UV/vis light, Zn2+/EDTA, and F-. The diarylethene was highly selective toward Zn2+ and F- with different fluorescence colors and binding modes. Upon addition of Zn2+, its emission peak was blue-shifted by 32 nm and emission intensity was enhanced by 57 fold, due to the formation of a 1:1 metal/ligand complex, accompanied by a fluorescence color change from dull red to green. Moreover, the diarylethene was also selectivity to F- with the fluorescence color change from dull red to yellow, The dramatic fluorescence color change made the naked eye detection of Zn2+ and F- possible. (C) 2016 Elsevier Ltd. All rights reserved.