title: Manipulation of fluorescent and colorimetric changes of fluorescein derivatives and applications for sensing silver ions.
abstract: Three structurally similar compounds, , bearing a fluorescence chromophore to which are appended morpholine, thiomorpholine and methylpiperazine substituents, display opposite fluorescence responses to pH changes, in contrast to that observed for fluorescein; and have extremely high binding selectivity towards Ag(+) ions and show completely different fluorescent and colorimetric changes upon addition of Ag(+), and the differences are proposed to be associated with different binding modes of and to this metal ion.
authors.affiliation: Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea.
authors.forename: K M K
authors.initials: KM
authors.lastname: Swamy
authors.forename: Ha Na
authors.initials: HN
authors.lastname: Kim
authors.forename: Jung Huyn
authors.initials: JH
authors.lastname: Soh
authors.forename: Youngmee
authors.initials: Y
authors.lastname: Kim
authors.forename: Sung-Jin
authors.initials: SJ
authors.lastname: Kim
authors.forename: Juyoung
authors.initials: J
authors.lastname: Yoon
mesh_terms: D002412:Cations; D003124:Colorimetry; D019793:Fluorescein / Q000032:analysis* / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D015394:Molecular Structure; D012834:Silver / Q000032:analysis* / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D017186:Titrimetry
chemical_list: D002412:Cations; D012834:Silver; D019793:Fluorescein