Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2010-12-18

Journal: TETRAHEDRON

Included Journals: Scopus、SCIE

Volume: 66

Issue: 51

Page Number: 9762-9768

ISSN: 0040-4020

Key Words: Chemosensor; FRET; Rhodamine; Coumarin

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 Cu(2+). Fluorescent probes CRB and CR6G, linked by hydrazide, function as ratiometric receptors for Cu(2+) 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. (C) 2010 Published by Elsevier Ltd.