Phonon-like Hydrogen-Bond Modes in Protic Ionic Liquids

Journal of the American Chemical Society
Judith ReichenbachKlaas Wynne

Abstract

Gigahertz- to terahertz-frequency infrared and Raman spectra contain a wealth of information concerning the structure, intermolecular forces, and dynamics of ionic liquids. However, these spectra generally have a large number of contributions ranging from slow diffusional modes to underdamped librations and intramolecular vibrational modes. This makes it difficult to isolate effects such as the role of Coulombic and hydrogen-bonding interactions. We have applied far-infrared and ultrafast optical Kerr effect spectroscopies on carefully selected ions with a greater or lesser degree of symmetry in order to isolate spectral signals of interest. This has allowed us to demonstrate the presence of longitudinal and transverse optical phonon modes and a great similarity of alkylammonium-based protic ionic liquids to liquid water. The data show that such phonon modes will be present in all ionic liquids, requiring a reinterpretation of their spectra.

References

May 2, 2008·The Journal of Chemical Physics·David A TurtonKlaas Wynne
Mar 25, 2009·Angewandte Chemie·Koichi FuminoRalf Ludwig
Jul 25, 2009·Nature Materials·Michel ArmandBruno Scrosati
Dec 2, 2009·The Journal of Chemical Physics·David A Turton, Klaas Wynne
Apr 8, 2010·The Journal of Chemical Physics·Edward W Castner, James F Wishart
Jun 15, 2011·Physical Chemistry Chemical Physics : PCCP·Koichi FuminoRalf Ludwig
Nov 30, 2011·Journal of the American Chemical Society·Stefan FunknerMartina Havenith
Jan 18, 2013·Angewandte Chemie·Koichi FuminoRalf Ludwig
May 17, 2014·Chemical Communications : Chem Comm·M SmiglakR D Rogers
Jun 4, 2014·Nature Communications·David A TurtonKlaas Wynne
Jun 20, 2014·The Journal of Physical Chemistry. B·Thomas SonnleitnerRichard Buchner
Dec 2, 2015·The Journal of Physical Chemistry. B·Toshiki YamadaMaya Mizuno
Jun 2, 2016·Nature Communications·Mario González-JiménezKlaas Wynne

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Citations

Apr 17, 2020·Physical Chemistry Chemical Physics : PCCP·Thamires A LimaMauro C C Ribeiro
Feb 2, 2019·Physical Chemistry Chemical Physics : PCCP·Christopher M Burba
Apr 14, 2020·The Journal of Physical Chemistry. B·Pradip Kumar Ghorai, Dmitry V Matyushov
Jun 8, 2021·Physical Chemistry Chemical Physics : PCCP·Mario González-JiménezKlaas Wynne
Mar 18, 2020·The Journal of Physical Chemistry. B·Vitor H Paschoal, Mauro C C Ribeiro
Oct 24, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Zhongyang DaiXiaohua Lu
Apr 7, 2020·Journal of the American Chemical Society·Finlay WaltonKlaas Wynne
Jul 12, 2018·The Journal of Physical Chemistry. B·Judith Reichenbach, Klaas Wynne
Nov 20, 2021·The Journal of Physical Chemistry. C, Nanomaterials and Interfaces·Isabel Vázquez-FernándezNatalia V Plechkova

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