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发布时间：2019-03-09

论文类型：期刊论文

发表时间：2010-07-21

发表刊物：PHYSICAL CHEMISTRY CHEMICAL PHYSICS

收录刊物：PubMed、SCIE

卷号：12

期号：27

页面范围：7386-7391

ISSN号：1463-9076

摘要：FRET cassette-type sensors, SN-1 and SN-2, which contain two naphthalimide donors and a squaraine acceptor, have been developed on the concept of switching off FRET through removing the spectral overlap by the analyte-induced decompositions of acceptor chromophore. SN-2 shows sensitive responses to fluoride anion and cyanide through both naked-eye detectable colour changes and ratiometric fluorescence changes. As the first example, SN-2 confirms that transformation of the common 'turn-off' chemodosimeter into ratiometric sensors can be realized conveniently based on the novel 'switching FRET off' approach.