Ratiometric fluorescent chemosensor for silver ion at physiological pH

Fang Wang, Raju Nandhakumar, Jong Hun Moon, Kwan Mook Kim, Jin Yong Lee, Juyoung Yoon
Inorganic Chemistry 2011 March 21, 50 (6): 2240-5
Bis-pyrene derivative 1, bearing two pyrene and pyridine groups, was synthesized as a ratiometric fluorescent chemosensor for Ag(+) in aqueous solution. Fluorescent chemosensor 1 displayed a selective ratiometric change with Ag(+), which was attributed to the excimer-monomer emissions of pyrenes. A mechanism for the binding mode was proposed based on fluorescence changes, NMR experiments, and theoretical calculations.

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