Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5399384 | Journal of Luminescence | 2015 | 29 Pages |
Abstract
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.
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Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Kamaljot Kaur, Savita Chaudhary, Sukhjinder Singh, S.K. Mehta,