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Relationship between Structure and Fluctuations of Lipid Nonlamellar Phases Deposited at the Solid-Liquid Interface

Nylander, Tommy LU ; Soltwedel, Olaf; Ganeva, Marina; Hirst, Christopher LU ; Holdaway, James LU ; Yanez Arteta, Marianna LU ; Wadsäter, Maria LU ; Barauskas, Justas LU ; Frielinghaus, Henrich and Holderer, Olaf (2017) In Journal of Physical Chemistry B 121(13). p.2705-2711
Abstract

The structure and dynamics of nanostructure films formed by mixtures of soy phosphatidylcholine and glycerol dioleate at the silicon-aqueous interface were studied by grazing incidence neutron spin echo spectroscopy (GINSES), specular and off-specular neutron reflectometry, and small-angle X-ray diffraction. Reverse hexagonal (HII) and micellar cubic phase (Fd3m) layers at the solid-liquid interface have been identified with neutron reflectometry measurements. A preferred orientation of the liquid crystalline (LC) domains was observed only for the anisotropic HII phase. The size of the LC domains was found to be about 1 micrometer as estimated from the width of the diffraction peaks. GINSES revealed that the cubic... (More)

The structure and dynamics of nanostructure films formed by mixtures of soy phosphatidylcholine and glycerol dioleate at the silicon-aqueous interface were studied by grazing incidence neutron spin echo spectroscopy (GINSES), specular and off-specular neutron reflectometry, and small-angle X-ray diffraction. Reverse hexagonal (HII) and micellar cubic phase (Fd3m) layers at the solid-liquid interface have been identified with neutron reflectometry measurements. A preferred orientation of the liquid crystalline (LC) domains was observed only for the anisotropic HII phase. The size of the LC domains was found to be about 1 micrometer as estimated from the width of the diffraction peaks. GINSES revealed that the cubic phase forms rather rigid films. In comparison, the HII film was more flexible, appearing as a modified undulation spectrum of the cylinders due to the interaction with the substrate.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physical Chemistry B
volume
121
issue
13
pages
7 pages
publisher
The American Chemical Society
external identifiers
  • scopus:85019637516
  • wos:000398881900001
ISSN
1520-6106
DOI
10.1021/acs.jpcb.6b11038
language
English
LU publication?
yes
id
21e63a95-7887-43cf-b9e1-3b0897a8ef60
date added to LUP
2017-06-13 14:52:07
date last changed
2017-09-18 11:40:35
@article{21e63a95-7887-43cf-b9e1-3b0897a8ef60,
  abstract     = {<p>The structure and dynamics of nanostructure films formed by mixtures of soy phosphatidylcholine and glycerol dioleate at the silicon-aqueous interface were studied by grazing incidence neutron spin echo spectroscopy (GINSES), specular and off-specular neutron reflectometry, and small-angle X-ray diffraction. Reverse hexagonal (H<sub>II</sub>) and micellar cubic phase (Fd3m) layers at the solid-liquid interface have been identified with neutron reflectometry measurements. A preferred orientation of the liquid crystalline (LC) domains was observed only for the anisotropic H<sub>II</sub> phase. The size of the LC domains was found to be about 1 micrometer as estimated from the width of the diffraction peaks. GINSES revealed that the cubic phase forms rather rigid films. In comparison, the H<sub>II</sub> film was more flexible, appearing as a modified undulation spectrum of the cylinders due to the interaction with the substrate.</p>},
  author       = {Nylander, Tommy and Soltwedel, Olaf and Ganeva, Marina and Hirst, Christopher and Holdaway, James and Yanez Arteta, Marianna and Wadsäter, Maria and Barauskas, Justas and Frielinghaus, Henrich and Holderer, Olaf},
  issn         = {1520-6106},
  language     = {eng},
  month        = {04},
  number       = {13},
  pages        = {2705--2711},
  publisher    = {The American Chemical Society},
  series       = {Journal of Physical Chemistry B},
  title        = {Relationship between Structure and Fluctuations of Lipid Nonlamellar Phases Deposited at the Solid-Liquid Interface},
  url          = {http://dx.doi.org/10.1021/acs.jpcb.6b11038},
  volume       = {121},
  year         = {2017},
}