کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5221087 1383408 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ratiometric fluorescence chemosensors for copper(II) and mercury(II) based on FRET systems
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Ratiometric fluorescence chemosensors for copper(II) and mercury(II) based on FRET systems
چکیده انگلیسی

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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tetrahedron - Volume 66, Issue 51, 18 December 2010, Pages 9762-9768
نویسندگان
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