Mendecki, L and Callan, N and Ahern, M and Schazmann, B and Radu, A (2016) Influence of Ionic Liquids on the Selectivity of Ion Exchange-Based Polymer Membrane Sensing Layers. Sensors, 16 (7). ISSN 1424-8220

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Abstract

The applicability of ion exchange membranes is mainly defined by their permselectivity towards specific ions. For instance, the needed selectivity can be sought by modifying some of the components required for the preparation of such membranes. In this study, a new class of materials -trihexyl(tetradecyl)phosphonium based ionic liquids (ILs) were used to modify the properties of ion exchange membranes. We determined selectivity coefficients for iodide as model ion utilizing six phosphonium-based ILs and compared the selectivity with two classical plasticizers. The dielectric properties of membranes plasticized with ionic liquids and their response characteristics towards ten different anions were investigated using potentiometric and impedance measurements. In this large set of data, deviations of obtained selectivity coefficients from the well-established Hofmeister series were observed on many occasions thus indicating a multitude of applications for these ion-exchanging systems.

Item Type: Article
Additional Information: This is the final published version of the article (version of record). It first appeared online via MDPI at http://dx.doi.org/10.3390/s16071106 - please refer to any applicable terms of use of the publisher.
Uncontrolled Keywords: ion-exchange membrane, ionic liquids, potentiometric sensors, selectivity
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Natural Sciences > School of Physical and Geographical Sciences
Related URLs:
Depositing User: Symplectic
Date Deposited: 13 Dec 2016 10:05
Last Modified: 13 Dec 2016 10:07
URI: http://eprints.keele.ac.uk/id/eprint/2648

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