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Cited by 261

The DOI matches its Crossref record; 37 of the 37 references it cites were found in a registry or an index.

Dynamics of Imidazolium Ionic Liquids from a Combined Dielectric Relaxation and Optical Kerr Effect Study: Evidence for Mesoscopic Aggregation

Turton, David A., Hunger, Johannes, Stoppa, Alexander, Hefter, Glenn, Thoman, Andreas, Walther, Markus, Buchner, Richard, Wynne, Klaas·2009·Journal of the American Chemical Society
DOI 10.1021/ja903315v
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Abstract

We have measured the intermolecular dynamics of the 1,3-dialkylimidazolium-based room-temperature ionic liquids (RTILs) [emim][BF(4)], [emim][DCA], and [bmim][DCA] at 25 degrees C from below 1 GHz to 10 THz by ultrafast optical Kerr effect (OKE) spectroscopy and dielectric relaxation spectroscopy (DRS) augmented by time-domain terahertz and far-infrared FTIR spectroscopy. This concerted approach allows a more detailed analysis to be made of the relatively featureless terahertz region, where the higher frequency diffusional modes are strongly overlapped with librations and intermolecular vibrations. Of greatest interest though, is an intense low frequency (sub-alpha) relaxation that we show is in accordance with recent simulations that have reported mesoscopic structure arising from aggregates or clusters--structure that explains the anomalous and inconveniently high viscosities of these liquids.

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Metadata

Authors
Turton, D. A., Hunger, J., Stoppa, A., Hefter, G., Thoman, A., Walther, M., Buchner, R., & Wynne, K.
Venue
Journal of the American Chemical Society
Publisher
American Chemical Society (ACS)
Published
2009-07-13
Volume
131
Issue
31
Pages
11140-11146
ISSN
  • 0002-7863 (ISSN-L)
  • 1520-5126
DOI
10.1021/ja903315v
OpenAlex
W2082675425
Cited by
261
References
37
FWCI
11.92
Type
journal article
Language
en
Open access
closed

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