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 HSO3â in mixed aqueous media
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
A simple salicylaldehyde derived Schiff base N, Nâ²- bis (p-chloro salicylidene)-1, 2- ethylenediamine (L) was synthesized and characterized. The receptor demonstrates simultaneous dual channel chromogenic and fluorogenic signaling towards HSO3â and Zn2+ in mixed aqueous media. Solvatochromism was employed systematically for modulating its optoelectronic properties. The probe was successfully assessed to monitor HSO3â 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 48Â nm after addition of Zn2+. The probe exhibits high selectivity over other competitive ions with high detection limit of 6.54Ã10â5Â M and 3.21Ã10â6Â M for HSO3â 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
Journal: Journal of Luminescence - Volume 160, April 2015, Pages 282-288
نویسندگان
Kamaljot Kaur, Savita Chaudhary, Sukhjinder Singh, S.K. Mehta,