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    Dual ion selective fluorescence sensor with potential applications in sample monitoring and membrane sensing


    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:

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