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@INPROCEEDINGS{Mohanakumar:892583,
author = {Mohanakumar, Shilpa and Wiegand, Simone},
title = {{H}ow {H}ofmeister series influence the thermodiffusion of
salts in water?},
reportid = {FZJ-2021-02180},
year = {2021},
abstract = {Thermal gradients induce a motion of solute molecules
towards hot or cold regions. The motion of solutes in a
solvent induced by a thermal gradient is termed
thermodiffusion. Soret coefficient is used to quantify the
ratio of the established concentration gradient to the
thermal gradient. This has become an important tool to
monitor protein-ligand binding , as it is very sensitive to
the nature of solute-water interactions. Buffers, which are
used to stabilize the proteins, are multicomponent mixtures
with different kinds of salts. Hence to obtain a better
understanding of protein-ligand systems, the first step is
the investigation of salt solutions. We investigated aqueous
solutions of five potassium salts: potassium chloride,
potassium bromide, potassium thiocyanate, potassium acetate
and potassium carbonate where the corresponding anions cover
the full Hofmeister range. We study the thermophoresis of
all salt solutions between 15 to 45oC in a molality range
between 1 – 5 mol/kg using thermal diffusion forced
Rayleigh scattering. We examine, in particular, whether the
correlations found for non-ionic solutes are carried over to
ionic solutes. Our results are discussed in the context with
the ionic and hydrogen bonding contributions to
thermophoresis. This study shows how sensitive the
thermophoretic phenomenon is to the ion species and its
position in the Hofmeister series and how a change of the
ion influences thermophoretic properties.},
month = {May},
date = {2021-05-10},
organization = {Bunsentagung 2021, Juelich (Germany),
10 May 2021 - 12 May 2021},
subtyp = {Other},
cin = {IBI-4},
cid = {I:(DE-Juel1)IBI-4-20200312},
pnm = {524 - Molecular and Cellular Information Processing
(POF4-524)},
pid = {G:(DE-HGF)POF4-524},
typ = {PUB:(DE-HGF)24},
url = {https://juser.fz-juelich.de/record/892583},
}