Free Solution Electrophoresis of Homopolyelectrolytes

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dc.creatorHsiao, Pai-Yi
dc.creatorWu, Kun-Mao
dc.date2008-08-22
dc.date.accessioned2026-07-07T10:11:24Z
dc.date.available2026-07-07T10:11:24Z
dc.descriptionWe investigate the behavior of single polyelectrolytes in multivalent salt solutions under the action of electric fields through computer simulations. The chain is unfolded in a strong electric field and aligned parallel to the field direction, and the chain size shows a sigmoidal transition. The unfolding electric field $E^*$ depends on the salt concentration and scales as $V^{-1/2}$ with $V$ being the ellipsoidal volume occupied by the chain. The magnitude of the electrophoretic mobility of chain drastically increases during the unfolding. The fact that $E^*$ depends on the chain length provides a plausible mechanism to separate long charged homopolymers by size in free solution electrophoresis via the unfolding transition of globule polyelectrolytes condensed by multivalent salt.
dc.description11 pages, 4 figures, submitted
dc.identifierhttps://arxiv.org/abs/0808.3030
dc.identifierhttp://arxiv.org/abs/0808.3030
dc.identifierJ. Phys. Chem. B (Letters) 112 (2008) 13177
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/171850
dc.subjectSoft Condensed Matter
dc.subjectStatistical Mechanics
dc.titleFree Solution Electrophoresis of Homopolyelectrolytes
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