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000009900 084__ $$2WoS$$aChemistry, Physical
000009900 1001_ $$0P:(DE-Juel1)VDB76355$$aBlanco, P.$$b0$$uFZJ
000009900 245__ $$aStudy of the Soret Effect in Monosaccharide Solutions
000009900 260__ $$aWashington, DC$$bSoc.$$c2010
000009900 300__ $$a2807 - 2813
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000009900 440_0 $$03694$$aJournal of Physical Chemistry B$$v114$$x1520-6106$$y8
000009900 500__ $$aWe appreciate many fruitful discussions with Pavel Polyakov, Malte Kleemeier, and Gerd Meier. We thank Stefanie Jacob and Martina Bischop for their help with polarimeter measurements. We are also grateful for very helpful remarks by Stefan Immel. We thank the Department of Education, Universities and Investigation of Basque Government for the grant BFI08188.0. Financial support due to the Deutsche Forschungsgemeinschaft grant Wi 1684 is gratefully acknowledged.
000009900 520__ $$aWe investigated the thermal diffusion behavior of aqueous solutions of monosaccharides with the infrared thermal diffusion forced Rayleigh scattering (IR-TDFRS) setup. As monosaccharides, we studied the three aldohexoses glucose, galactose, and mannose and the two ketohexoses sorbose and fructose. All sugars have the same molecular weight, but their structures differ as well as some physical properties such as viscosity, density, thermal expansion coefficient, and optical rotation. Additionally, we measured the viscosity and the optical rotation of the monosaccharide solutions in the investigated temperature and concentration range. While there is a clear correlation between the structure and the thermal diffusion behavior for alkanes, the situation is much more complicated for the monosaccharides. Nevertheless, as in the case of the alkanes, we find a correlation between the thermal diffusion coefficient with the ratio of the thermal expansion coefficient and the kinematic viscosity. We discuss the physical principles, which connect the thermal diffusion behavior with other thermophysical properties and the structure of the different sugars.
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000009900 650_2 $$2MeSH$$aDiffusion
000009900 650_2 $$2MeSH$$aMolecular Structure
000009900 650_2 $$2MeSH$$aMonosaccharides: chemistry
000009900 650_2 $$2MeSH$$aSolutions: chemistry
000009900 650_2 $$2MeSH$$aSpectroscopy, Fourier Transform Infrared
000009900 650_2 $$2MeSH$$aStereoisomerism
000009900 650_2 $$2MeSH$$aTemperature
000009900 650_2 $$2MeSH$$aViscosity
000009900 650_7 $$00$$2NLM Chemicals$$aMonosaccharides
000009900 650_7 $$00$$2NLM Chemicals$$aSolutions
000009900 650_7 $$2WoSType$$aJ
000009900 7001_ $$0P:(DE-Juel1)131034$$aWiegand, S.$$b1$$uFZJ
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000009900 8567_ $$uhttp://dx.doi.org/10.1021/jp910331a
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