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AuthorElsafy A.G.
AuthorAl-Easa H.S.
AuthorHijji Y.M.
Available date2020-03-18T08:10:10Z
Publication Date2018
Publication NameSensors (Switzerland)
ResourceScopus
ISSN14248220
URIhttp://dx.doi.org/10.3390/s18072219
URIhttp://hdl.handle.net/10576/13350
Abstract(E)-2-((benzo[d]thiazol-2-ylimino)methyl)-4-nitrophenol 1 and (E)-2-(((6-methoxybenzo[d]thiazol-2-yl)imino)methyl)-4-nitrophenol 2 were synthesized efficiently under microwave conditions. The structures were confirmed using IR,1 H NMR, and13 C NMR. UV-vis. Fluorescence investigations demonstrated that 1 and 2 are sensitive and selective sensors for detection of cyanide over all other anions SCN?, AcO?, N3 ?, H2 PO4 ?, H2 AsO4 ?, F?, Cl?, Br?, and I? in aqueous media. Cyanide induces colorimetric change from pale yellow to dark yellow and from transparent to pale yellow for 1 and 2, respectively. It enhances the absorption at wavelengths 385 nm and 425 nm of 1 and 385 nm and 435 nm of 2. Acidic anions H2 PO4 ? and H2 AsO4 ? displayed significant interference with the interaction of cyanide and sensors 1 and 2. Sensor 1 has lower detection limit (LDL) 1 ? 10?6 M, while 2 has LDL 1.35 ? 10?6 M. ? 2018 by the authors. Licensee MDPI, Basel, Switzerland.
SponsorThis publication was made possible by a research award [NPRP7-495-1-094] from the Qatar National Research Fund (a member of The Qatar Foundation). The contents herein are solely the responsibility of the authors.
Languageen
PublisherMDPI AG
Subject2-aminobenzothiazoles
Cyanide
Fluorescence
Microwave assisted synthesis
Sensors
TitleSubstituted 2-aminobenzothiazoles salicylidenes synthesis and characterization as cyanide sensors in aqueous medium
TypeArticle
Issue Number7
Volume Number18
dc.accessType Abstract Only


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