Pore Stability and Dynamics in Polymer Membranes

Details Pore Stability and Dynamics in Polymer Membranes Pore Stability and Dynamics in Polymer Membranes

2002-11-22

arxiv.org/abs/cond-mat/0211501v1

Europhys. Lett. vol. 64, 550-556 (2003)

Physics

Condensed Matter

Soft Condensed Matter

submitted to PRL

Scientific paper

10.1209/epl/i2003-00264-2

Vesicles self-assembled from amphiphilic diblock copolymers exhibit a wide diversity of behavior upon electroporation, due to competitions between edge, surface and bending energies that drive the system, while different viscous dissipation mechanisms determine the timescales. These effects are manifestations of the varying membrane thickness d from what are essentially chemically identical molecules. For smaller d, we find large unstable pores and the resulting membrane fragments reassemble into vesicles within minutes. Vesicles with larger d form long-lived pores of nanometer dimension that could be potentially useful for sieving applications and drug delivery.

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