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Biased reptation of polyampholytes: Trapping and enhancement effects (1997)

Loomans, D. ; Schiessel, H. ; Blumen, A.

College Park, Md. : American Institute of Physics (AIP)

The Journal of Chemical Physics 107 (1997), S. 2636-2642

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ISSN: 1089-7690

Source: AIP Digital Archive

Topics: Physics , Chemistry and Pharmacology

Notes: We consider the dynamics of polyampholytes (PAs, polymers containing positive and negative charges) in a fixed network (gel). Under the influence of an external electrical field a PA undergoes a biased reptation; the electrophoretic mobility of the chain depends crucially on the given charge distribution. This effect, which does not occur for equally charged polymers (polyelectrolytes, e.g., DNA) leads to an effective separation of PAs according to their charge distribution—even for PAs of the same length and the same overall charge. © 1997 American Institute of Physics.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.474574

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