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

Autor:	Pedro P. Madeira, Amber R. Titus, Luisa A. Ferreira, Alexander I. Belgovskiy, Elizabeth K. Mann, Jay Adin Mann, William V. Meyer, Anthony E. Smart, Vladimir N. Uversky, Boris Y. Zaslavsky
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	aqueous two-phase system water structure liquid–liquid phase separation solvent properties attenuated total reflection–Fourier transform infrared spectroscopy Microbiology QR1-502
Zdroj:	Biomolecules, Vol 11, Iss 12, p 1787 (2021)
Druh dokumentu:	article
ISSN:	2218-273X
DOI:	10.3390/biom11121787
Popis:	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.
Databáze:	Directory of Open Access Journals
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