title: Ratiometric fluorescent chemosensor for silver ion at physiological pH.
abstract: 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.
authors.affiliation: Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea.
authors.forename: Fang
authors.initials: F
authors.lastname: Wang
authors.forename: Raju
authors.initials: R
authors.lastname: Nandhakumar
authors.forename: Jong Hun
authors.initials: JH
authors.lastname: Moon
authors.forename: Kwan Mook
authors.initials: KM
authors.lastname: Kim
authors.forename: Jin Yong
authors.initials: JY
authors.lastname: Lee
authors.forename: Juyoung
authors.initials: J
authors.lastname: Yoon
mesh_terms: D005453:Fluorescence; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007477:Ions / Q000737:chemistry; D008958:Models, Molecular; D015394:Molecular Structure; D011721:Pyrenes / Q000737:chemistry*; D011725:Pyridines / Q000737:chemistry*; D011789:Quantum Theory; D012834:Silver / Q000032:analysis*
chemical_list: D005456:Fluorescent Dyes; D007477:Ions; D011721:Pyrenes; D011725:Pyridines; D012834:Silver; C030984:pyrene; C023666:pyridine