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  • Conference proceedings  (3)
  • Structure, bonding, stereochemistry, and isomerism of biomolecules  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Domain shapes and monolayer structures of triple-chain phospholipids on water (1994)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 16 (1994), S. 1537-1544 
    Details
    ISSN: 0392-6737
    Keywords: Thin films, growth, structure, epitaxy, and nonelectronic properties ; Structure and morphology, thickness ; Structure, bonding, stereochemistry, and isomerism of biomolecules ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary Two triple-chain phospholipid isomers were investigated at the air-water interface by means of fluorescence microscopy and grazing incidence X-ray diffraction (GID). The two lipids differ only in the position of the branched chain at the glycerol backbone. Fluorescence microscopy shows different domain sharp-edged domains. In the case of dendritic domains the chains are more tilted, the deviation from hexagonal symmetry is more pronounced and hence the lattice anisotropy is larger.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02462039
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Separation of enantiomers in a diol monolayer studied by fluorescence microscopy and grazing incidence X-ray diffraction (1994)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 16 (1994), S. 1487-1492 
    Details
    ISSN: 0392-6737
    Keywords: Thermodynamics of surfaces and interfaces ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary Monolayers of a racemic mixture and of the pure S- and R-enantiomers of 3-hexadecyloxy-propane-1,2-diol have been investigated by fluorescence microscopy and grazing incidence X-ray diffraction. Above the transition pressureΠ c domains with a polygonal shape appear. On compressing the monolayers shape instabilities occur. While the spirals of the S-enantiomer turn clockwise and the spirals of the R-enantiomer turn counterclockwise, the spirals from one domain of the racemate exhibit opposite handedness. This behaviour is explained by a separation of enantiomers on the molecular level. At all pressures investigated the enantiomers exhibit an oblique lattice. The tilt angle of the molecules decreases with increasing pressure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02462033
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Influence of a hydrophilic spacer on the structure of a phospholipid monolayer (1994)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 16 (1994), S. 1545-1550 
    Details
    ISSN: 0392-6737
    Keywords: Thin films: growth, structure, epitaxy, and nonelectronic properties ; Structure and Morphology, thickness ; Structure, bonding, stereochemistry, and isomerism of biomolecules ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary We present the results of thermodynamical and X-ray grazing incidence diffraction experiments performed on Langmuir monolayers of ether lipids with hydrophilic spacers between the glycerol backbone and the phosphatidylcholine head group: DHPC, DH-E01-PC, and DH-E02-PC. As a spacer the oxy-ethylene group is used, which is a typical hydrophilic unit of non-ionic tensides. It turns out that the introduction of the hydrophilic spacers leads to a fluidization of the monolayer and reduces the tilt angle of the chains.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02462040
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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