QENS Study of Diffusive and Localized Cation Motions of Pyridinium-Based Ionic Liquids

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 2013 English Publisher:Physical Society of JapanJournal:Journal of the Physical Society of Japan, volume 82, page SA003 (issn: 0031-9015, eissn: 1347-4073,

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Authors: Embs, Jan Peter; Burankova, Tatsiana; Reichert, Elena; Fossog, Verlaine; Hempelmann, Rolf;

doi: 10.7566/jpsjs.82sa.sa003

QENS Study of Diffusive and Localized Cation Motions of Pyridinium-Based Ionic Liquids

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Abstract

We have investigated stochastic motions of the cations of the pyridinium based ILs (1-butylpyridinium bis(trifluoromethylsulfonyl)imide [BuPy][Tf2N], 1-dodecylpyridinium bis(trifluoromethylsulfonyl)imide [C12Py][Tf2N]) with different length of the alkyl substituent attached to the pyridinium ring. The accessible observation time at the instrument enabled us to consider the slower long-range motion and the faster localized one. Both of the processes are affected by the length of the alkyl chain. For better understanding of the localized process the quasielastic neutron scattering (QENS)-spectra of partially deuterated samples have been analyzed as well.

Related Organizations

Saarland University
Germany
Paul Scherrer Institute
Switzerland

Keywords

General Physics and Astronomy

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