Supramolecular interaction of 2,4-dichlorophenol and beta-cyclodextrin functionalized ionic liquid and its preliminary study in sensor application

Mohamad, S. and Chandrasekaram, K. and Rasdi, F.L.M. and Manan, N.S.A. and Raoov, M. and Sidek, N. and Fathullah, S.F. (2015) Supramolecular interaction of 2,4-dichlorophenol and beta-cyclodextrin functionalized ionic liquid and its preliminary study in sensor application. Journal of Molecular Liquids, 212. pp. 850-856. ISSN 0167-7322

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Official URL: DOI: 10.1016/j.molliq.2015.10.044

Abstract

The supramolecular interaction of 2,4-dichlorophenol (2,4-DCP) and beta-cyclodextrin fiinctionalized ionic liquid, a mono-6-deoxy-6-(3-benzylimidazolium)-beta-cyclodextrintosylate (beta-CD-BIMOTs) has been investigated. The inclusion complex of beta-CD-BIMOTs-2,4-DCP complex was analyzed with conventional spectroscopic techniques and compared with native beta-CD-2,4-DCP complex. The mechanism of the inclusion too was studied and discussed based on FTIR, H-1 NMR and 2D NOESY analysis. beta-CD-BIMOTs has a stronger binding affinity towards 2,4-DCP compared to native beta-CD based on the formation constant value calculated. In this work, modified electrodes were fabricated by mixing beta-CD-BIMOTs and carbon paste electrode (CPE) for determination of 2,4-DCP. The electrochemical behavior of 2,4-DCP at beta CD-BIMOT5/CPE exhibits higher electrochemical performance than that of native beta-CD/CPE and CPE, revealing that CPE modified beta-CD-BIMOTs not only displays good electrical properties of the ionic liquid but also exhibits high supramolecular recognition properties of beta-CD-BIMOTs through the formation of an inclusion complex between beta-CD-BIMOTs and 2,4-DCP molecules. This preliminarily study shows that beta-CD-BIMOTs can act as an inexpensive electrochemical sensor that is suitable for the determination of 2,4-DCP. (C) 2015 Elsevier B.V. All rights reserved.

Item Type: Article
Uncontrolled Keywords: Beta-cyclodextrin; Ionic liquid; Inclusion complex; 2,4-Dichlorophenol; Sensor
Subjects: Q Science > QC Physics
Q Science > QD Chemistry
Depositing User: Mrs. Siti Mawarni Salim
Date Deposited: 05 Sep 2016 08:14
Last Modified: 22 Jan 2019 01:26
URI: http://eprints.um.edu.my/id/eprint/16358

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