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Updated: Jun 25, 2026

Fluorescent Nanoparticles for the Measurement of Ion Concentration in Biological Systems
Published on: July 4, 2011
Manipulation of fluorescent and colorimetric changes of fluorescein derivatives and applications for sensing silver
K M K Swamy1, Ha Na Kim, Jung Huyn Soh
1Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea.
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.
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