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Updated: May 17, 2026

Modulating Shape of Polyester Based Polymersomes using Osmotic Pressure
Published on: April 21, 2021
Disordering of phospholipid headgroups induced by a small amount of polyethylene oxide
Andrey Filippov1, Bulat Munavirov, Bulat Gizatullin
1Kazan (Volga Region) Federal University, 420008, Kazan, Russian Federation. Andrey.Filippov@ksu.ru
Abstract:
We present a (31)P NMR spectroscopy study of planar glass-plate-oriented multi-bilayers of dimyristoylphosphatidylcholine (DMPC) with addition of polyethylene oxide (PEO). This work revealed the presence of a new component in the spectra that appeared only with addition of a small fraction of PEO (up to one PEO segment per dimyristoylphosphatidylcholine molecule) and disappeared when larger amounts of PEO were added. We explained this phenomenon as an effect of an inhomogeneous force field induced by the PEO molecules located at a certain depth in the lipid membrane interface region.
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