Issue 3, 2009
From the journal:

New Journal of Chemistry

Chloride ion recognition using thiourea/urea based receptors incorporated into 1,3-disubstituted calix[4]arenes†

J. Nagendra Babu,a   Vandana Bhalla,a   Manoj Kumar,*a   Rajiv Kumar Puria  and  Rakesh K. Mahajana  

* Corresponding authors

a Department of Chemistry, UGC-Centre for Advanced Studies, Guru Nanak Dev University, Punjab, Amritsar, India
E-mail: mksharmaa@yahoo.co.in
Fax: +91 (0)183 2258820
Tel: +91 (0)183 2258802 9 ext. 3205

Abstract

New calix[4]arene derivatives (3–5, 7–8) of cone and 1,3-alternate conformations possessing thiourea/urea moieties have been synthesized and examined for their anion recognition abilities towards different anions like fluoride, chloride, bromide, iodide, nitrate and acetate by 1H NMR and UV-Vis spectroscopy. Fitting the changes in the absorption spectra using nonlinear regression analysis indicates that all these compounds have strong binding affinity for chloride ions. The stoichiometry of the hydrogen bonded complexes is 1 : 1 (H : G) for receptor 3–5, while it is 2 : 1 (H : G) with 7–8. Chloride ion selective electrodes (ISEs) were also formed which showed excellent selectivity over all other anions tested.

Graphical abstract: Chloride ion recognition using thiourea/urea based receptors incorporated into 1,3-disubstituted calix[4]arenes

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Article information

DOI
https://doi.org/10.1039/B816610B
Article type
Paper
Submitted
24 Sep 2008
Accepted
02 Dec 2008
First published
20 Jan 2009

New J. Chem., 2009,33, 675-681

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Chloride ion recognition using thiourea/urea based receptors incorporated into 1,3-disubstituted calix[4]arenes

J. N. Babu, V. Bhalla, M. Kumar, R. K. Puri and R. K. Mahajan, New J. Chem., 2009, 33, 675 DOI: 10.1039/B816610B

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