Journal
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS
Volume 220, Issue 10-11, Pages 1407-1416Publisher
WALTER DE GRUYTER GMBH
DOI: 10.1524/zpch.2006.220.10.1407
Keywords
RT-ionic liquid; electronic structure; density functional calculations; photoelectron spectroscopy (UPS, XPS); metastable induced electron spectroscopy (MIES)
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The near-surface electronic structure of the room-temperature ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amide has been investigated with ultraviolet and X-ray photoelectron spectroscopy as well as metastable induced electron spectroscopy. The results have been compared with density functional theory calculations. The good agreement between the experimental and theoretical data provides detailed insight into the origin of the observed spectral features. In particular, we found that a simple composition of the spectra of the isolated ions does not suffice to fit to the experimental results, but interionic interactions have to be considered.
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