NDLI: Anthraimidazoledione Based Reversible and Reusable Selective Chemosensors for Fluoride Ion: Naked-Eye, Colorimetric and Fluorescence “ON-OFF”

Content Provider	Springer Nature Link
Author	Bhattacharyya, Bhaswati Kundu, Arijit Guchhait, Nikhil Dhara, Kaliprasanna
Copyright Year	2017
Abstract	Novel anthraimidazoledione-based compounds (1–3) are synthesized as selective colorimetric and fluorescent sensors for fluoride ion. The binding properties of the probes (1–3) are studied with different anions in acetonitrile solvent. Spectral red shifts in the absorption spectra and ‘turn-off’ emission are observed when fluoride is added to 1–3. The striking green to orange color change in the ambient light is thought to be due to the deprotonation of the N–H proton of the imidazole moiety of the probes by the basic F$^{−}$ ion. Interestingly, in all three cases the nonfluorescent probe-F$^{−}$ solutions, on treatment with copper perchlorate, show distinct color change from orange to golden yellow with resumption of fluorescence intensity. Furthermore, the reversibility of sensors (1–3) for the detection of F$^{−}$ ion is tested for four cycles indicating that “ON-OFF-ON” mechanism is operative. Test strip based on sensor 2 acts as a reusable cost-effective F$^{−}$ sensor.
Starting Page	1041
Ending Page	1049
Page Count	9
File Format	PDF
ISSN	10530509
Journal	Journal of Fluorescence
Volume Number	27
Issue Number	3
e-ISSN	15734994
Language	English
Publisher	Springer US
Publisher Date	2017-02-09
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Anthraimidazoledione Sensor Colorimetry Fluorescence Fluoride ion Biomedicine Biological and Medical Physics, Biophysics Biotechnology Biochemistry Analytical Chemistry
Content Type	Text
Resource Type	Article
Subject	Sociology and Political Science Spectroscopy Law Biochemistry Clinical Biochemistry Clinical Psychology

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