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  Characterization of lipid bilayers adsorbed to functionalized air/water interfaces

Pusterla, J., Scoppola, E., Appel, C., Mukhina, T., Shen, C., Brezesinski, G., et al. (2022). Characterization of lipid bilayers adsorbed to functionalized air/water interfaces. ChemRxiv: the Preprint Server for Chemistry. doi:10.26434/chemrxiv-2022-rf7z9.

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 Creators:
Pusterla, Julio, Author
Scoppola, Ernesto1, Author              
Appel, Christian, Author
Mukhina, Tetiana, Author
Shen, Chen, Author
Brezesinski, Gerald, Author
Schneck, Emanuel, Author
Affiliations:
1Wolfgang Wagermaier, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863296              

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Free keywords: liquid interfaces; model membrane; surface scattering; bilayer; adsorption.
 Abstract: Lipid bilayers immobilized in planar geometries, such as solid-supported or "floating" bilayers, have enabled detailed studies of biological membranes with numerous experimental techniques, notably x-ray and neutron reflectometry. However, the presence of a solid support also has disadvantages as it complicates the use of spectroscopic techniques as well as surface rheological measurements that would require surface deformations. Here, in order to overcome these limitations, we investigate lipid bilayers adsorbed to inherently soft and experimentally well accessible air/water interfaces that are functionalized with Langmuir monolayers of amphiphiles. The bilayers are characterized with ellipsometry, X-ray scattering, and X-ray fluorescence. Grazing-incidence X-ray diffraction reveals that lipid bilayers in a chain-ordered state can have significantly different structural features than regular Langmuir monolayers of the same composition. Our results suggest that bilayers at air/water interfaces may be well suited for fundamental studies in the field of membrane biophysics.

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Language(s): eng - English
 Dates: 2022-06-172022
 Publication Status: Published in print
 Pages: -
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 Rev. Type: -
 Identifiers: DOI: 10.26434/chemrxiv-2022-rf7z9
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Title: ChemRxiv : the Preprint Server for Chemistry
  Other : ChemRxiv
Source Genre: Journal
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Publ. Info: Washington, DC; Frankfurt am Main; Cambridge, London : ACS, GDCh, Royal Society of Chemistry
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: ZDB: 2949894-7