Ultrasensitive detection of Cu 2+ : A cyanobiphenyl-based colorimetric and fluorescence chemosensor and its Smartphone and food sample applications.

Autor: Aydin D; Department of Chemistry, Kamil Ozdag Science Faculty, Karamanoglu Mehmetbey University, 70100 Karaman, Turkey. Electronic address: duyguaydin@kmu.edu.tr., Karuk Elmas SN; Department of Chemistry, Kamil Ozdag Science Faculty, Karamanoglu Mehmetbey University, 70100 Karaman, Turkey; Department of Analytical Chemistry, Faculty of Pharmacy, Istanbul University-Cerrahpaşa, 34500 Istanbul, Turkey. Electronic address: snihankaruk@gmail.com., Arslan FN; Department of Chemistry, Kamil Ozdag Science Faculty, Karamanoglu Mehmetbey University, 70100 Karaman, Turkey.
Jazyk: angličtina
Zdroj: Food chemistry [Food Chem] 2023 Feb 15; Vol. 402, pp. 134439. Date of Electronic Publication: 2022 Sep 29.
DOI: 10.1016/j.foodchem.2022.134439
Abstrakt: A new cyanobiphenyl-based compound 4-hydroxy-3-(((4-(phenylamino)phenyl)imino)methyl)-[1,1-biphenyl]-4-carbonitrile (PEBP) for Cu 2+ detection was fabricated and successfully characterized. PEBP was employed as a sensor for Cu 2+ sensing and used as an extremely fast responsive colorimetric and ''ON/OFF'' fluorescent sensor in H 2 O:CH 3 CN (40:60, v/v). Highly selective fluorescence response of PEBP to Cu 2+ yielded an excellently low detection limit of 20.4 nM. Binding stoichiometry for PEBP-Cu 2+ was found to be 2:1 by Job's plot study, as well MALDI TOF-MS data, and the binding constant was computed as 0.62 × 10 2 M -1/2 . The validation study was employed using analytical parameters and statistical tests. To understand the binding capability, density functional theory (DFT) study was performed. Smartphone and applications for different food and drinking water samples were successfully constructed for Cu 2+ detection, and the findings revealed that PEBP could be easily employed for in-site Cu 2+ detection without sophisticated instrument.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2022 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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