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Relating lattice and domain-structures of monoglyceride monolayers

journal contribution
posted on 2023-06-08, 18:28 authored by G Brezesinski, Enrico Scalas, B Struth, H Mohwald, F Bringezu, U Gehlert, G Weidemann, D Vollhardt
The segment structure of 1-monopalmitoylglycerol monolayer domains at the air-water interface studied by Brewster angle microscopy is related to the results of X-ray diffraction measurements as a function of surface pressure. The condensed-phase domains are subdivided into seven segments and have segment angles near 52 degrees. The segment boundaries are ascribed to low-energy lattice rows which are the [31] and the [3-1] lines in the two-dimensional lattice. As the lattice structure is changed upon compression, shifting the angle between these directions toward 58 degrees, 7-fold segment structures are expected to transform into 6-fold ones on compression to high surface pressures. This is observed, supporting the validity of the model, although the aliphatic tails form a free rotator phase and no crystal.

History

Publication status

  • Published

Journal

Journal of Physical Chemistry

ISSN

0022-3654

Publisher

American Chemical Society

Issue

21

Volume

99

Page range

8758-8762

Department affiliated with

  • Mathematics Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2014-10-03

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