Self-diffusion in molecular liquids: Medium-chain n-alkanes and coenzyme Q(10) studied by quasielastic neutron scattering
Smuda C, Busch S, Gemmecker G, Unruh T (2008)
Publication Status: Published
Publication Type: Journal article
Publication year: 2008
Journal
Publisher: AMER INST PHYSICS
Book Volume: 129
Journal Issue: 1
DOI: 10.1063/1.2943673
Abstract
A systematic time-of-flight quasielastic neutron scattering (TOF-QENS) study on diffusion of n-alkanes in a melt is presented for the first time. As another example of a medium-chain molecule, coenzyme Q(10) is investigated in the same way. The data were evaluated both in the frequency and in the time domain. TOF-QENS data can be satisfactorily described by different models, and it turned out that the determined diffusion coefficients are largely independent of the applied model. The derived diffusion coefficients are compared with values measured by pulsed-field gradient nuclear magnetic resonance (PFG-NMR). With increasing chain length, an increasing difference between the TOF-QENS diffusion coefficient and the PFG-NMR diffusion coefficient is observed. This discrepancy in the diffusion coefficients is most likely due to a change of the diffusion mechanism on a nanometer length scale for molecules of medium-chain length. (C) 2008 American Institute of Physics.
Authors with CRIS profile
Involved external institutions
Germany (DE)How to cite
APA:
Smuda, C., Busch, S., Gemmecker, G., & Unruh, T. (2008). Self-diffusion in molecular liquids: Medium-chain n-alkanes and coenzyme Q(10) studied by quasielastic neutron scattering. Journal of Chemical Physics, 129(1). https://doi.org/10.1063/1.2943673
MLA:
Smuda, Christoph, et al. "Self-diffusion in molecular liquids: Medium-chain n-alkanes and coenzyme Q(10) studied by quasielastic neutron scattering." Journal of Chemical Physics 129.1 (2008).
BibTeX: Download