Ultrafast X-ray absorption study of longitudinal–transverse phonon coupling in electrolyte aqueous solution. Issue 40 (9th October 2017)

• Record Type: Journal Article
• Authors: Jiao, Yishuo; Adams, Bernhard W.; Dohn, Asmus Ougaard; Møller, Klaus B.; Jónsson, Hannes; Rose-Petruck, Christoph
• Is Part Of: Physical chemistry chemical physics. Volume 19:Issue 40(2017)
• Page Start: 27266
• Page End: 27274
• Publication Date: 2017-10-09
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.3
• DOI: 10.1039/c7cp02978k
• Languages: English
• ISSNs: 1463-9076

Abstract

Abstract : Ultrafast X-ray absorption spectroscopy is applied to study the conversion of longitudinal to transverse phonons in aqueous solution. Abstract : Ultrafast X-ray absorption spectroscopy is applied to study the conversion of longitudinal to transverse phonons in aqueous solution. Permanganate solutes serve as X-ray probe molecules that permit the measurement of the conversion of 13.5 GHz, longitudinal phonons to 27 GHz, transverse phonons that propagate with high-frequency sound speed. The experimental results, combined with QM/MM MD simulations, show that the hydrogen bond network around the charged solutes has a glass-like stiffness that persists for at least tens of picoseconds.