Kumawat, Lokesh Kumar and Asif, Mohammad and Gupta, Vinod Kumar (2017) Dual ion selective fluorescence sensor with potential applications in sample monitoring and membrane sensing. Sensors and Actuators B: Chemical, 241. pp. 1090-1098. ISSN 0925-4005

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Abstract

A new sensing functionalized chemosensor 3-hydroxy-2-(1H-indol-3-yl)-4H-chromen-4-one (M1) was readily prepared in facile reaction conditions and explored its sensing nature response towards metal ions in semi-aqueous medium. The chemosensor M1 exhibited high selective and sensitive fluorescence turn “off-on” response for Al3+ and Zn2+ ions in the existence of several metal ions and the changes are enabled for naked-eye detection. These high selectivity expressed by high binding constants 2.62 × 104 (Al3+) and 1.92 × 104 M−1 (Zn2+) calculated by the Benesi-Hildebrand equation based on the emission studies. The binding strategy was also supported by 1H NMR titration.

Item Type:	Article
Keywords:	Chemosensor; Dual metal ion; Reversibility; Real sample; Al3+; Zn2+;
Academic Unit:	Faculty of Science and Engineering > Chemistry
Item ID:	11600
Identification Number:	https://doi.org/10.1016/j.snb.2016.10.031
Depositing User:	IR Editor
Date Deposited:	05 Nov 2019 16:57
Journal or Publication Title:	Sensors and Actuators B: Chemical
Publisher:	Elsevier
Refereed:	Yes
URI:	Publisher

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