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Scaling Behaviors of Polymers on Lipid Membranes: Coupling of Polymer Chain Dynamics and Surface Thermal Fluctuations.

Authors :
Chen, Zi-Ren
Zhou, Wu
Shen, Lei
Source :
Chinese Journal of Polymer Science (Springer Science & Business Media B.V.); Mar2023, Vol. 41 Issue 3, p459-464, 6p
Publication Year :
2023

Abstract

Despite extensive researches on the motion of polymer chains on lipid membranes, the effect of membrane fluctuations on polymer chain dynamics remains poorly understood. Here we report single molecule tracking experiments that allow for comparable measurements of polymer chain diffusion dynamics on nanotubular and planar phospholipid membranes. We observe a super-diffusion behavior and no apparent chain-length-dependent mobility of polymer chains on nanotubular membranes, while a Brownian motion and apparent chain-length-dependent mobility of polymer chains on planar membranes. We suggest the super-diffusion nature of polymer chains may be due to the thermal-fluctuations of lipid nanotubes, which can be described from a statistical thermodynamic phenomenon coupling of polymer chain dynamics and surface thermal fluctuations. We suggest that the existence of surface environment fluctuations should influence the dynamics of the adsorbed polymer chains. This study provides previously uncharacterized insights into polymer diffusion dynamics on thermal-fluctuating flexible surfaces, which is essential to understanding the effect of environment fluctuations on polymer chain behaviors. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
02567679
Volume :
41
Issue :
3
Database :
Complementary Index
Journal :
Chinese Journal of Polymer Science (Springer Science & Business Media B.V.)
Publication Type :
Academic Journal
Accession number :
161884130
Full Text :
https://doi.org/10.1007/s10118-022-2848-4