TY  - JOUR
AU  - Blanco, P.
AU  - Wiegand, S.
TI  - Study of the Soret Effect in Monosaccharide Solutions
JO  - The journal of physical chemistry  / B
VL  - 114
SN  - 1520-6106
CY  - Washington, DC
PB  - Soc.
M1  - PreJuSER-9900
SP  - 2807 - 2813
PY  - 2010
N1  - We 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.
AB  - We 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.
KW  - Diffusion
KW  - Molecular Structure
KW  - Monosaccharides: chemistry
KW  - Solutions: chemistry
KW  - Spectroscopy, Fourier Transform Infrared
KW  - Stereoisomerism
KW  - Temperature
KW  - Viscosity
KW  - Monosaccharides (NLM Chemicals)
KW  - Solutions (NLM Chemicals)
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:20136092
UR  - <Go to ISI:>//WOS:000274842600031
DO  - DOI:10.1021/jp910331a
UR  - https://juser.fz-juelich.de/record/9900
ER  -