Ion Transfer Square Wave Voltammetry of Ionic Liquid Cations with a Solvent Polymeric Membrane Ion Sensor |
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Authors: | Joaquín?A Ortuño Carmen Serna Angela Molina Encarnación Torralba |
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Institution: | 1. Departamento de Química Analítica, Facultad de Química, Universidad de Murcia, 30100?Murcia, Spain;2. Departamento de Química Física, Facultad de Química, Universidad de Murcia, 30100?Murcia, Spain |
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Abstract: | Square wave voltammetry (SWV) with a solvent polymeric membrane ion sensor has been applied to study the ion transfer of several ionic liquid cations, from water to a poly(vinyl chloride) membrane plasticized with 2‐nitrophenyl octyl ether. The study has mainly been focused on dialkylimidazolium and alkylpyridinium cations. The experimental voltammograms obtained are in good agreement with the theoretical predictions. The standard ion transfer potentials of the ionic liquid cations have been obtained and the values found have been used to draw some conclusions on the relationship between structure and lipophilicity. Also, a relationship between the toxicity and the ion transfer potentials of dialkylimidazolium homologues has been found. |
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Keywords: | ITIES Square wave voltammetry Ionic liquids Ion transfer Solvent polymeric membranes Membranes |
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