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Ion Transfer Square Wave Voltammetry of Ionic Liquid Cations with a Solvent Polymeric Membrane Ion Sensor
Author(s) -
Ortuño Joaquín A.,
Serna Carmen,
Molina Angela,
Torralba Encarnación
Publication year - 2009
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200904684
Subject(s) - ionic liquid , chemistry , solvent , ion , membrane , voltammetry , ionic bonding , square wave , inorganic chemistry , cyclic voltammetry , lipophilicity , chloride , electrochemistry , analytical chemistry (journal) , organic chemistry , electrode , biochemistry , physics , quantum mechanics , voltage , catalysis
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.