点击次数：

论文类型：期刊论文

发表时间：2010-12-18

发表刊物：TETRAHEDRON

收录刊物：SCIE、Scopus

卷号：66

期号：51

页面范围：9762-9768

ISSN号：0040-4020

关键字：Chemosensor; FRET; Rhodamine; Coumarin

摘要：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.