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- Title
Synchrotron-based UV resonance Raan scattering for investigating ionic liquid-water solutions.
- Authors
Bottari, C.; Rossi, B.; Mele, A.; Damin, A.; Bordiga, S.; Musso, M.; Gessini, A.; Masciovecchio, C.
- Abstract
This work shows that bulk ionic liquids (ILs) and their water solution can be conveniently investigated by synchrotron-based UV resonance Raman (UVRR) spectroscopy. The main advantages of this technique for the investigation of thelocalstructureand intermolecularinteractions in imidazolium-based ILs are presented and discussed. Theunique tunabilityofsynchrotron sourceallows one toselectivelyenhance in the Raman spectra the vibrational signals arising from the imidazolium ring. Such signals showed good sensitivity to the modifications induced in the local structure ofILs byi) the change of anion and ii) the progressively longer alkyl chain substitution on the imidazolium ring. Moreover, some UVRR signals are specifically informative on the effect induced byaddition of wateron the strength of cation-anion H-bonds in IL-water solutions. All of these results corroborate the potentialityofUVRRto retrieve information on the intermolecular interactions in IL-water solutions, besides the counterpart obtained by employing on these systems the spontaneous Raman scattering technique.
- Subjects
IONIC solutions; VIBRATIONAL spectra; RAMAN spectroscopy; RESONANCE; INTERMOLECULAR interactions; SMALL-angle X-ray scattering; SYNCHROTRONS; RAMAN effect
- Publication
Condensed Matter Physics, 2019, Vol 22, Issue 4, p1
- ISSN
1607-324X
- Publication type
Article
- DOI
10.5488/CMP.22.43301