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@ARTICLE{Mohanakumar:890555,
author = {Mohanakumar, Shilpa and Luettmer-Strathmann, Jutta and
Wiegand, Simone},
title = {{T}hermodiffusion of aqueous solutions of various potassium
salts},
journal = {The journal of chemical physics},
volume = {154},
number = {8},
issn = {0021-9606},
address = {Melville, NY},
publisher = {American Institute of Physics},
reportid = {FZJ-2021-01037},
pages = {084506 -},
year = {2021},
abstract = {Thermophoresis or thermodiffusion has become an important
tool to monitor protein–ligand binding as it is very
sensitive to the nature of solute–water interactions.
However, the microscopic mechanisms underlying
thermodiffusion in protein systems are poorly understood at
this time. One reason is the difficulty to separate the
effects of the protein system of interest from the effects
of buffers that are added to stabilize the proteins. Due to
the buffers, typical protein solutions form multicomponent
mixtures with several kinds of salt. To achieve a more
fundamental understanding of thermodiffusion of proteins, it
is therefore necessary to investigate solutions of buffer
salts. For this work, the thermodiffusion of aqueous
potassium salt solutions has been studied systematically. We
use thermal diffusion forced Rayleigh scattering experiments
in a temperature range from 15 °C to 45 °C to investigate
the thermodiffusive properties of aqueous solutions of five
potassium salts: potassium chloride, potassium bromide,
potassium thiocyanate, potassium acetate, and potassium
carbonate in a molality range between 1 mol/kg and 5 mol/kg.
We compare the thermophoretic results with those obtained
for non-ionic solutes and discuss the thermophoresis of the
salts in the context of ion-specific solvation according to
the Hofmeister series.I. INTRODUCTIO},
cin = {IBI-4},
ddc = {530},
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)16},
pubmed = {33639776},
UT = {WOS:000630522900006},
doi = {10.1063/5.0038039},
url = {https://juser.fz-juelich.de/record/890555},
}