کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1359747 981412 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The selective quantification of iron by hexadentate fluorescent probes
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
The selective quantification of iron by hexadentate fluorescent probes
چکیده انگلیسی

The synthesis of four hexadentate fluorescent probes is described, where the fluorescent moiety is based on either coumarin or fluorescein and the chelating moiety is based on either 3-hydroxypyridin-4-one or 3-hydroxypyran-4-one. The fluorescence is quenched when the probe chelating moieties bind iron. The probes were found to be selective for iron over other metals such as Cu, Zn, Ni, Mn and Co. The effect of Cu on fluorescence quenching can be eliminated in the presence of N,N,N’,N’-tetrakis(2-pyridylmethyl)-ethylenediamine. Competition studies demonstrate that the exchange of iron between pyridinone-based probes and apotransferrin is very slow. The ability to scavenge iron from oligomeric iron(III) citrate complexes demonstrate that the pyridinone probes scavenges iron faster than deferiprone and desferrioxamine. The fluorescence intensity of the fluorescein-based probe is quantitatively related to the iron concentration with the limit of detection being 10−8 M.

Coumarin or fluorescein-based hexadentate probes for iron selective quantification is described.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioorganic & Medicinal Chemistry - Volume 17, Issue 23, 1 December 2009, Pages 8093–8101
نویسندگان
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