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A highly selective and sensitive ratiometric fluorescent sensor for Zn2+ was constructed by using a new diarylethene with a benzyl-linked 8-aminoquinoline-2-aminomethylpyridine unit. Its fluorescence could be reversibly modulated by photoirradiation and metal ions. Stimulated by Zn2+, its emission peak was red-shifted from 421 nm to 515 nm and the emission intensity was enhanced by 7-fold with a concomitant...
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