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Proceedings Paper

THz Raman spectra of aqueous solutions of hydrophiles and amphiphiles
Author(s): Ismael A. Heisler; Kamila Mazur; Steve R. Meech
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Paper Abstract

The ultrafast dynamics of water and aqueous solutions are probed by the optical Kerr effect (OKE). The translational origin of water dynamics observed by the OKE is described. The ultrafast response can be described by H-bond stretching and bending modes. These modes are persistent to unexpectedly high solute concentrations, where most water molecules are in a solvation shell. In some cases this suggests the formation of water clusters. All solutes slow the dynamics observed by OKE. Hydrophilic solutes give rise to a larger retardation of water dynamics than hydrophobic ones. These trends persist in molecular solutes, peptides and proteins.

Paper Details

Date Published: 14 March 2013
PDF: 5 pages
Proc. SPIE 8623, Ultrafast Phenomena and Nanophotonics XVII, 862302 (14 March 2013); doi: 10.1117/12.999980
Show Author Affiliations
Ismael A. Heisler, The Univ. of East Anglia Norwich (United Kingdom)
Kamila Mazur, The Univ. of East Anglia Norwich (United Kingdom)
Steve R. Meech, The Univ. of East Anglia Norwich (United Kingdom)

Published in SPIE Proceedings Vol. 8623:
Ultrafast Phenomena and Nanophotonics XVII
Markus Betz; Abdulhakem Y. Elezzabi; Jin-Joo Song; Kong-Thon Tsen, Editor(s)

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