کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5399384 1505900 2015 29 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Highly selective probe based on imine linkage for Zn2+ and HSO3− in mixed aqueous media
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Highly selective probe based on imine linkage for Zn2+ and HSO3− in mixed aqueous media
چکیده انگلیسی
A simple salicylaldehyde derived Schiff base N, N′- bis (p-chloro salicylidene)-1, 2- ethylenediamine (L) was synthesized and characterized. The receptor demonstrates simultaneous dual channel chromogenic and fluorogenic signaling towards HSO3− and Zn2+ in mixed aqueous media. Solvatochromism was employed systematically for modulating its optoelectronic properties. The probe was successfully assessed to monitor HSO3− detection via UV-vis spectroscopy. DFT calculations and 1H NMR spectroscopy further support the results based on shifting of equilibrium. Moreover, the sensor showed large fluorescence enhancement with blue-shift of 48 nm after addition of Zn2+. The probe exhibits high selectivity over other competitive ions with high detection limit of 6.54×10−5 M and 3.21×10−6 M for HSO3− and Zn2+, respectively. Importantly, this is one of the rare reports in which Schiff base was utilized for the fabrication of chromogenic or fluorogenic sensor using solvent effect for multianalyte detection.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 160, April 2015, Pages 282-288
نویسندگان
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