Abstract
The intermolecular interactions and dynamics of novel ionic liquids with alkylsilyl and alkylsiloxy substitutions on the cations are studied by measuring the intermolecular vibrational spectra and reorientational dynamics using femtosecond Kerr effect methods. The new ionic liquids include 1-dimethylphenylsilylmethyl-3-methylimidazolium (PhSi-mim+), and 1-methyl-3-pentamethyldisiloxymethylimidazolium (SiOSi-mim+) cations paired with the bis(trifluoromethylsulfonyl)imide (NTf2-) anion. Measured ionic liquid viscosities are surprisingly low for such bulky cation substituents. DFT electronic structure calculations on the isolated ions provide additional information about the electrostatic interactions.
| Original language | English |
|---|---|
| Pages (from-to) | 4819-4829 |
| Number of pages | 11 |
| Journal | Journal of Physical Chemistry B |
| Volume | 111 |
| Issue number | 18 |
| DOIs | |
| Publication status | Published - May 10 2007 |
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
- Materials Chemistry
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Shirota, H., Wishart, J. F., & Castner, E. W. (2007). Intermolecular interactions and dynamics of room temperature ionic liquids that have silyl- and siloxy-substituted imidazolium cations. Journal of Physical Chemistry B, 111(18), 4819-4829. https://doi.org/10.1021/jp067126o