Influence of ionic liquids on the selectivity of ion exchange-based polymer membrane sensing layers

Lukasz Mendecki; Nicole Callan; Meghan Ahern; Benjamin Schazmann; Aleksandar Radu

doi:10.3390/s16071106

Influence of ionic liquids on the selectivity of ion exchange-based polymer membrane sensing layers

Lukasz Mendecki, Nicole Callan, Meghan Ahern, Benjamin Schazmann, Aleksandar Radu

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

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.

Original language	English
Article number	1106
Journal	Sensors
Volume	16
Issue number	7
DOIs	https://doi.org/10.3390/s16071106
Publication status	Published - 16 Jul 2016

Keywords

Ion-exchange membrane
Ionic liquids
Potentiometric sensors
Selectivity

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https://arrow.tudublin.ie/scschcpsart/87Licence: CC BY

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title = "Influence of ionic liquids on the selectivity of ion exchange-based polymer membrane sensing layers",

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.",

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AU - Mendecki, Lukasz

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AU - Ahern, Meghan

AU - Schazmann, Benjamin

AU - Radu, Aleksandar

PY - 2016/7/16

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KW - Potentiometric sensors

KW - Selectivity

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Influence of ionic liquids on the selectivity of ion exchange-based polymer membrane sensing layers

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Keywords

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