Electronic Resource
College Park, Md.
:
American Institute of Physics (AIP)
The Journal of Chemical Physics
107 (1997), S. 2636-2642
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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