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@INPROCEEDINGS{Wiegand:1023026,
      author       = {Wiegand, Simone},
      title        = {{T}hermophoresis: a sensor for solute-water interactions},
      reportid     = {FZJ-2024-01609},
      year         = {2024},
      abstract     = {Thermophoresis or Thermodiffusion describes the mass
                      transport in a temperature gradient. It can be used for the
                      characterization of protein-ligand binding reactions, in
                      devices for energy conversion and is discussed in the
                      context of the origin-of-life question. In our studies we
                      focus on biological and biocompatible systems. We find that
                      the thermodiffusion in aqueous systems is dominated by
                      contributions from heat of transfer, hydrogen bond and ionic
                      interactions. However, the separation of these effects is
                      often difficult, especially in case of biological systems
                      where a systematic exclusion of contributions may not be
                      feasible. We find that the thermodiffusion of non-ionic
                      solutes in water is dominated by the capability of the
                      solute to form hydrogen bonds. For these solutes we find a
                      clear correlation with their hydrophilicity. For ionic
                      solutes, even for simple salts the situation is more
                      complicated. Hydrogen bonding interactions are less
                      dominant, but we find partial agreement with the Hofmeister
                      series, suggesting that thermodiffusion is sensitive to
                      ion-specific effects. Beside the deficiencies of the
                      theoretical analysis, we will also elucidate the
                      shortcomings of the available experimental methods handling
                      biological multicomponent systems.},
      organization  = {Seminar series: Sustainable
                       Bioeconomy, Jülich (Germany)},
      subtyp        = {Plenary/Keynote},
      cin          = {IBI-4},
      cid          = {I:(DE-Juel1)IBI-4-20200312},
      pnm          = {5241 - Molecular Information Processing in Cellular Systems
                      (POF4-524)},
      pid          = {G:(DE-HGF)POF4-5241},
      typ          = {PUB:(DE-HGF)31},
      url          = {https://juser.fz-juelich.de/record/1023026},
}