Charge Inversion Effects in Electrophoresis of Polyelectrolytes in the Presence of Multivalent Counterions and Transversal Electric Fields

Polymers

Sorin Nedelcu¹  Jens-Uwe Sommer¹ 

[1] Leibniz-Institut für Polymerforschung Dresden, Hohe Str. 6, D-01069 Dresden, Germany; E-Mail:

关键词: molecular dynamics;    polyelectrolytes;    confinement;    multivalent electric charges;   

DOI  :  10.3390/polym6122942

来源: mdpi

【 摘 要 】

By molecular dynamics simulations we investigate the transport of charged polymers in confinement, under externally applied electric fields, in straight cylinders of uniform diameter and in the presence of monovalent or multivalent counterions. The applied electric field has two components; a longitudinal component along the axis of the cylinder and a transversal component perpendicular to the cylinder axis. The direction of electrophoretic velocity depends on the polyelectrolyte length, valency of the counterions present in solution and transversal electric field value. A statistical model is put forward in order to explain these observations.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.