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Na+ triggered fluorescence sensors for Mg2+ detection based on a coumarin salen moiety
Yu Dong1, Junfeng Li, Xiaoxiang Jiang
1Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
Organic Letters
|April 12, 2011
Abstract:
Two coumarin salen-based sensors CS1 and CS2 can exhibit a pronounced fluorescence enhancement response toward Mg(2+) as high as 36-fold (CS1) and 111-fold (CS2) in the presence of Na(+) as a synergic trigger. More importantly, the fluorescent color of CS1 was bright green instead of weak yellow after the addition of Mg(2+) and Na(+) together, which can be easily detected by the naked eye.
