Hydrogen Bond Arrangement Is Shown to Differ in Coexisting Phases of Aqueous Two-Phase Systems.

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  • Additional Information
    • Source:
      Publisher: MDPI Country of Publication: Switzerland NLM ID: 101596414 Publication Model: Electronic Cited Medium: Internet ISSN: 2218-273X (Electronic) Linking ISSN: 2218273X NLM ISO Abbreviation: Biomolecules Subsets: MEDLINE
    • Publication Information:
      Original Publication: Basel, Switzerland : MDPI, 2011-
    • Subject Terms:
      Salts/*chemistry ; Solvents/*chemistry ; Water/*chemistry; Hydrogen Bonding ; Hydrophobic and Hydrophilic Interactions ; Liquid-Liquid Extraction ; Spectroscopy, Fourier Transform Infrared ; Static Electricity
    • Abstract:
      Analysis by attenuated total reflection-Fourier transform infrared spectroscopy shows that each coexisting phase in aqueous two-phase systems has a different arrangement of hydrogen bonds. Specific arrangements vary for systems formed by different solutes. The hydrogen bond arrangement is shown to correlate with differences in hydrophobic and electrostatic properties of the different phases of five specific systems, four formed by two polymers and one by a single polymer and salt. The results presented here suggest that the arrangement of hydrogen bonds may be an important factor in phase separation.
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    • Contributed Indexing:
      Keywords: aqueous two-phase system; attenuated total reflection–Fourier transform infrared spectroscopy; liquid–liquid phase separation; solvent properties; water structure
    • Accession Number:
      0 (Salts)
      0 (Solvents)
      059QF0KO0R (Water)
    • Publication Date:
      Date Created: 20211224 Date Completed: 20220114 Latest Revision: 20220114
    • Publication Date:
      20231215
    • Accession Number:
      PMC8698934
    • Accession Number:
      10.3390/biom11121787
    • Accession Number:
      34944431