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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/4060
Title: A highly selective chromogenic sensor for Mn2 +, turn-off fluorometric for Hg2 + ion, and turn-on fluorogenic sensor for F− ion with the practical application
Authors: Gupta N.
Singhal D.
Singh A.K.
Singh N.
Singh U.P.
Published in: Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Abstract: A colorimetric and fluorometric probe (E)-2-((8-hydroxy-1,2,3,5,6,7-hexahydropyrido[3,2,1-ij]quinolin-9-yl)methylene)hydrazinecarbothioamide based on thiosemicarbazide and julolidine moieties has been synthesised in pure crystalline form and characterized by 1H NMR, UV–vis, elemental analysis and single crystal XRD. The probe functioned as multitarget ion sensor, detect biologically important metal ions Hg2 + and Mn2 + in dual channel mode. Meanwhile, in mixed solvent media DMF/H2O [8:2], probe displayed selectivity for Hg2 + over other cations by the emission spectrum. Interestingly probe has been explored to recognize F− anion in DMF through ESIPT mechanism. The 1:1 binding stoichiometry of probe with Hg2 + and Mn2 + is confirmed by Job's plot through emission titration and UV–vis titration respectively. Probe is selective and sensitive to Hg2 + and Mn2 + with detection limit as low as 15 μM and 0.2 μM respectively. The sensing mechanism for selective ions was also scrutinized using 1H NMR experiments and computational studies. © 2017 Elsevier B.V.
Citation: Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy (2017), 176(): 38-46
URI: https://doi.org/10.1016/j.saa.2017.01.007
http://repository.iitr.ac.in/handle/123456789/4060
Issue Date: 2017
Publisher: Elsevier B.V.
Keywords: Fluoride ion sensor
Manganese colorimetric sensor
Mercury fluorometric sensor
Thiosemicarbazones
ISSN: 13861425
Author Scopus IDs: 56309659200
7003355678
57209223382
57211016562
57203181883
Author Affiliations: Gupta, N., Department of Chemistry, Indian Institute of Technology-Roorkee, Roorkee, 247667, India
Singhal, D., Department of Chemistry, Indian Institute of Technology-Roorkee, Roorkee, 247667, India
Singh, A.K., Department of Chemistry, Indian Institute of Technology-Roorkee, Roorkee, 247667, India
Singh, N., Department of Chemistry, Indian Institute of Technology-Roorkee, Roorkee, 247667, India
Singh, U.P., Department of Chemistry, Indian Institute of Technology-Roorkee, Roorkee, 247667, India
Funding Details: NG is grateful to University Grants Commission (UGC) (18-12/2011), New Delhi, India, for financial support to undertake this work.
Corresponding Author: Singh, A.K.; Department of Chemistry, Indian Institute of Technology-RoorkeeIndia; email: akscyfcy@iitr.ernet.in
Appears in Collections:Journal Publications [CY]

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