Back to Search
Start Over
Ratiometric fluorescence chemosensors for copper(II) and mercury(II) based on FRET systems
- Source :
-
Tetrahedron . Dec2010, Vol. 66 Issue 51, p9762-9768. 7p. - Publication Year :
- 2010
-
Abstract
- Abstract: A system based on FRET mechanism, comprising a coumarin donor and a rhodamine acceptor, was developed for the selective and quantitative detection of metal ions. Fluorescent chemosensors RCs, linked by 1,2-diethylamine, exhibit significant fluorescence enhancement and excellent selectivity toward Cu2+. Fluorescent probes CRB and CR6G, linked by hydrazide, function as ratiometric receptors for Cu2+ chromogentically and fluorogentically in organic-aqueous media. Furthermore, the characteristic rhodamine-based fluorescence response of CRB (excitation at 550 nm) exhibits high selectivity for Hg(II). The construction of this kind of universal FRET system opens a broader prospect for future design of ratiometric fluorescent probes. [ABSTRACT FROM AUTHOR]
- Subjects :
- *FLUORESCENCE
*ENERGY transfer
*COUMARINS
*RHODAMINE B
*METAL ions
*DIETHYLAMINE
Subjects
Details
- Language :
- English
- ISSN :
- 00404020
- Volume :
- 66
- Issue :
- 51
- Database :
- Academic Search Index
- Journal :
- Tetrahedron
- Publication Type :
- Academic Journal
- Accession number :
- 55479410
- Full Text :
- https://doi.org/10.1016/j.tet.2010.09.043