Manipulation of fluorescent and colorimetric changes of fluorescein derivatives and applications for sensing silver ions.
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.
Swamy
K M K
KM
Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea.
Kim
Ha Na
HN
Soh
Jung Huyn
JH
Kim
Youngmee
Y
Kim
Sung-Jin
SJ
Yoon
Juyoung
J
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
D002412:Cations; D012834:Silver; D019793:Fluorescein