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Structure and dynamics in protic ionic liquids: A combined optical Kerr-effect and dielectric relaxation spectroscopy study

Turton, D.A., Sonnleitner, T., Ortner, A., Walther, M., Hefter, G., Seddon, K.R., Stana, S., Plechkova, N.V., Buchner, R. and Wynne, K. (2012) Structure and dynamics in protic ionic liquids: A combined optical Kerr-effect and dielectric relaxation spectroscopy study. Faraday Discussions, 154 . pp. 145-153.

Link to Published Version: http://dx.doi.org/10.1039/c1fd00054c
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Abstract

The structure and dynamics of ionic liquids (ILs) are unusual due to the strong interactions between the ions and counter ions. These microscopic properties determine the bulk transport properties critical to applications of ILs such as advanced fuel cells. The terahertz dynamics and slower relaxations of simple alkylammonium nitrate protic ionic liquids (PILs) are here studied using femtosecond optical Kerr-effect spectroscopy, dielectric relaxation spectroscopy, and terahertz time-domain spectroscopy. The observed dynamics give insight into more general liquid behaviour while comparison with glass-forming liquids reveals an underlying power-law decay and relaxation rates suggest supramolecular structure and nanoscale segregation.

Publication Type: Journal Article
Murdoch Affiliation: School of Chemical and Mathematical Science
Publisher: Royal Society of Chemistry
Copyright: © 2012 The Royal Society of Chemistry
URI: http://researchrepository.murdoch.edu.au/id/eprint/6273
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