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Shakhov A, Valiullin R, Kärger J. Tracing Molecular Propagation in Dextran Solutions by Pulsed Field Gradient NMR. J Phys Chem Lett. 2012;3(14):1854-7doi: 10.1021/jz300734m.
Shakhov, A., Valiullin, R., & Kärger, J. (2012). Tracing Molecular Propagation in Dextran Solutions by Pulsed Field Gradient NMR. The journal of physical chemistry letters, 3(14), 1854-7. https://doi.org/10.1021/jz300734m
Shakhov, Alexander, et al. "Tracing Molecular Propagation in Dextran Solutions by Pulsed Field Gradient NMR." The journal of physical chemistry letters vol. 3,14 (2012): 1854-7. doi: https://doi.org/10.1021/jz300734m
Shakhov A, Valiullin R, Kärger J. Tracing Molecular Propagation in Dextran Solutions by Pulsed Field Gradient NMR. J Phys Chem Lett. 2012 Jul 19;3(14):1854-7. doi: 10.1021/jz300734m. Epub 2012 Jun 28. PMID: 26292005.
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J Phys Chem Lett. 2012 Jul 19;3(14):1854-7. doi: 10.1021/jz300734m. Epub 2012 Jun 28.

Tracing Molecular Propagation in Dextran Solutions by Pulsed Field Gradient NMR.

The journal of physical chemistry letters

Alexander Shakhov, Rustem Valiullin, Jörg Kärger

Affiliations

  1. Faculty of Physics and Earth Sciences, University of Leipzig, Linnéstrasse 5, D-04103 Leipzig, Germany.

PMID: 26292005 DOI: 10.1021/jz300734m

Abstract

We have exploited the pulsed field gradient (PFG) technique of NMR to measure molecular diffusion in aqueous solutions of a mixture of dextran molecules. From detailed studies by fluorescence correlation spectroscopy (FCS), the lighter component of such mixtures is known to undergo subdiffusion, up to diffusion path lengths on the order of 0.5 μm. Our studies provide clear evidence of a crossover to normal diffusion for diffusion path lengths from this range up to about 1 μm.

Keywords: dextran solution; diffusion; mixture; pulsed field gradient NMR

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