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Molecular Interaction of a New Antibacterial Polymer with a Supported Lipid Bilayer Measured by an in situ Label-Free Optical Technique

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Tartalom: http://www.mdpi.com/1422-0067/14/5/9722
Archívum: MTA Könyvtár
Gyűjtemény: Status = Published

Type = Article
Cím:
Molecular Interaction of a New Antibacterial Polymer with a Supported Lipid Bilayer Measured by an in situ Label-Free Optical Technique
Létrehozó:
Horváth, Róbert
Kobzi, Balázs
Keul, Helmut
Kiss, Éva
Dátum:
2013
Téma:
QD02 Physical chemistry / fizikai kémia
Tartalmi leírás:
The interaction of the antibacterial polymer?branched poly(ethylene imine) substituted with quaternary ammonium groups, PEO and alkyl chains, PEI25QI5J5A815?with a solid supported lipid bilayer was investigated using surface sensitive optical waveguide spectroscopy. The analysis of the optogeometrical parameters was extended developing a new composite layer model in which the structural and optical anisotropy of the molecular layers was taken into consideration. Following in situ the change of optical birefringence we were able to determine the composition of the lipid/polymer surface layer as well as the displacement of lipid bilayer by the antibacterial polymer without using additional labeling. Comparative assessment of the data of layer thickness and optical anisotropy helps to reveal the molecular mechanism of antibacterial effect of the polymer investigated.
Típus:
Article
PeerReviewed
Formátum:
text
Azonosító:
Horváth, Róbert and Kobzi, Balázs and Keul, Helmut and Kiss, Éva (2013) Molecular Interaction of a New Antibacterial Polymer with a Supported Lipid Bilayer Measured by an in situ Label-Free Optical Technique. INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES, 14 (5). pp. 9722-9736. ISSN 1661-6596
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