Journal
FARADAY DISCUSSIONS
Volume 154, Issue -, Pages 289-301Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1fd00061f
Keywords
-
Categories
Funding
- Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan
- Korean Government (MEST) [2010-0027660]
- World-Class University of the Republic of Korea
- [19105005]
- Grants-in-Aid for Scientific Research [19105005, 22750003, 23350005, 21245002] Funding Source: KAKEN
Ask authors/readers for more resources
The interfaces of water/room temperature ionic liquids (RTIL) (1-alkyl-3-methyl imidazolium bis(trifluoromethylsulfonyl) amide ([C(n)mim]TFSA): n = 4, 8) are investigated by infrared-visible sum frequency generation (IV-SFG) vibrational spectroscopy and molecular dynamics (MD) simulation. SFG spectra taken within the SO stretch region drastically differ between air/RTIL and water/RTIL interfaces. When a RTIL surface is in contact with water, a broadened and blue-shifted SO2-ss mode peak is observed in the SFG spectra, indicating an inhomogeneous intermolecular interaction due to hydrogen bonding of the [TFSA](-) anions and water molecules at the water/[C(n)mim]TFSA interface. MD simulations show the SO2 groups of the anion are preferentially orientated toward the water phase, which is consistent with the SFG spectral features. Polar orientation of the [TFSA](-) anion originates from the ordered structure of the alkyl chains of [C(n)mim](+) cations.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available