4.6 Article

Probing the balance of attraction and repulsion in binary mixtures of dimethyl sulfoxide and n-alcohols

Journal

PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 15, Issue 4, Pages 1093-1096

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c2cp42902k

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Funding

  1. Royal Society [RG110091]
  2. Carnegie Trust for the Universities of Scotland
  3. Scottish Funding Council through the Scottish Sensor Systems Centre (SSSC)

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Published volumetricmixing data for DMSO-n-alcohol systems show a transition from attractive to repulsive interaction dominance for increasing alkyl chain length. A spectroscopic marker for the relative dominance of these interactions is investigated by FTIR measurements. While most vibrational modes show very similar behavior for the alcohols (C3-C5) studied, the CO torsion mode reveals a strong correlation between maximum red-shift and the balance of attraction and repulsion.

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