The Temperature-Dependent Hydrogen-Bonding Signature of Lipids Monitored in the Far-Infrared Domain
Phospholipids are studied by means of Fourier transform infrared (FTIR) spectroscopy in the mid‐ and far‐infrared spectral ranges, thereby establishing the hydrogen‐bonding continuum as a function of the temperature. The well‐known mid‐infrared spectrum of the phospholipid layer clearly shows a temp...
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Published in | Chemphyschem Vol. 11; no. 2; pp. 435 - 441 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Weinheim
WILEY-VCH Verlag
01.02.2010
WILEY‐VCH Verlag Wiley |
Subjects | |
Online Access | Get full text |
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Summary: | Phospholipids are studied by means of Fourier transform infrared (FTIR) spectroscopy in the mid‐ and far‐infrared spectral ranges, thereby establishing the hydrogen‐bonding continuum as a function of the temperature. The well‐known mid‐infrared spectrum of the phospholipid layer clearly shows a temperature‐dependent phase transition. In the far‐infrared region (from 300 to 50 cm−1), an alternation of the interaction between the phospholipids and water molecules is found. The hydrogen‐bonding network ensemble and bound water molecules can be monitored in this spectral region. The lipid structure is found to strongly influence the intermolecular hydrogen‐bonding interplay. Thus, studies in the far‐infrared region provide significant information—at the molecular level—about the intermolecular hydrogen‐bonding signature of self‐assembled phospholipids.
Structural signature: Hydrogen‐bonding network ensembles and bound water molecules in phospholipids are visualized by means of far‐infrared spectroscopy (see picture). This technique allows a very specific description of the intermolecular hydrogen‐bonding interactions in large molecular assemblies and is thus a powerful tool for structural investigation. |
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Bibliography: | istex:BD8FEA33E6C00A96EA4EB497CD99D0B8A459908A ark:/67375/WNG-PKBGM53P-1 ArticleID:CPHC200900430 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1439-4235 1439-7641 |
DOI: | 10.1002/cphc.200900430 |