کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5399790 1505906 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Isatin appended rhodamine scaffold as an efficient chemical tool to detect selectively Al3+
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Isatin appended rhodamine scaffold as an efficient chemical tool to detect selectively Al3+
چکیده انگلیسی
5-methoxy isatin-appended rhodamine dye, (E)-3′-(diethylamino)-6′-(ethyl(methyl)amino)-2-((5-methoxy-2-oxoindolin-3-ylidene)amino)spiro[isoindoline-1,9′-xanthen]-3-one (L) has been designed, synthesized, and characterized by different spectroscopic techniques. The chemosensor L shows high sensitivity towards Al3+ ions without interference from other biologically important cations in DMSO/H2O (1/9, v/v) media. The Al3+-ion promoted ring opening of the rhodamine spirolactam ring in chemosensor L evokes a fluorescence turn-on response via chelation-enhanced fluorescence (CHEF) process. Its lowest detection limit for Al3+ is 2.2×10−8 M, and displays a significant color change from almost colorless to deep pink in the presence of Al3+. The titration results show a 1:1 complex formation between chemosensor L and Al3+.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 154, October 2014, Pages 369-375
نویسندگان
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