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The effects of anion and cation substitution on the ultrafast solvent dynamics of ionic liquids: A time-resolved optical Kerr-effect spectroscopic study
Abstract
Ultrafast solvent dynamics of room-temperature ionic liquids have been investigated by optical heterodyne-detected Raman-induced Kerr-effect spectroscopy (OHD-RIKES) by studying the effects of cation and anion substitution on the low frequency librational modes. The spectra of two series of imidazolium salts are presented. The first series is based on the 1-butyl-3-methylimidazolium salts [bmim]+ containing the anions trifluoromethanesulfate [TfO]−, bis(trifluoromethanesulfonyl)imide [Tf2N]−, and hexafluorophosphate [PF6]−. The second series is based on [Tf2N]− salts containing the three cations 1-butyl-2,3-dimethylimidazolium [bmmim]+, 1-methyl-3-octylimidazolium [omim]+, and [bmim]+. It is found in all five samples that the signal is due to libration of the imidazolium ring at three frequencies around 30, 65, and 100 cm−1 corresponding to three local configurations of the anion with respect to the cation.
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Cites
Influence of chloride, water, and organic solvents on the physical properties of ionic liquids
Seddon, K. R., Stark, A., & Torres, M.-J. (2000) · Pure and Applied Chemistry · doi:10.1351/pac200072122275 · Cited by 2,293
Generation and field-resolved detection of femtosecond electromagnetic pulses tunable up to 41 THz
Huber, R., Brodschelm, A., Tauser, F., & Leitenstorfer, A. (2000) · Applied Physics Letters · doi:10.1063/1.126625 · Cited by 413
Cited by
Understanding Ionic Liquids at the Molecular Level: Facts, Problems, and Controversies
Weingärtner, H. (2008) · Angewandte Chemie International Edition · doi:10.1002/anie.200604951 · Cited by 1,543
Ionic liquids: solvent properties and organic reactivity
Chiappe, C., & Pieraccini, D. (2005) · Journal of Physical Organic Chemistry · doi:10.1002/poc.863 · Cited by 1,169
Castner, E. W., & Wishart, J. F. (2010) · The Journal of Chemical Physics · doi:10.1063/1.3373178 · Cited by 398
The influence of hydrogen bonding on the physical properties of ionic liquids
Fumino, K., Peppel, T., Geppert-Rybczyńska, M., Zaitsau, D. H., Lehmann, J. K., Verevkin, S. P., Köckerling, M., & Ludwig, R. (2011) · Physical Chemistry Chemical Physics · doi:10.1039/c1cp20732f · Cited by 326
Interactions and dynamics in electrolyte solutions by dielectric spectroscopy
Buchner, R., & Hefter, G. (2009) · Physical Chemistry Chemical Physics · doi:10.1039/b906555p · Cited by 318
Metadata
- Authors
- Giraud, G., Gordon, C. M., Dunkin, I. R., & Wynne, K.
- Venue
- The Journal of Chemical Physics
- Publisher
- AIP Publishing
- Published
- 2003-07-01
- Volume
- 119
- Issue
- 1
- Pages
- 464-477
- ISSN
- 0021-9606 (ISSN-L)
- 1089-7690
- OpenAlex
- W2089625391
- Cited by
- 253
- References
- 2
- FWCI
- 8.44
- Type
- journal article
- Language
- en
- Open access
- closed
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- Giraud, G., Gordon, C. M., Dunkin, I. R., & Wynne, K. (2003). The effects of anion and cation substitution on the ultrafast solvent dynamics of ionic liquids: A time-resolved optical Kerr-effect spectroscopic study. The Journal of Chemical Physics. https://doi.org/10.1063/1.1578056
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