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037 _ _ |a PreJuSER-23307
041 _ _ |a eng
082 _ _ |a 670
084 _ _ |2 WoS
|a Chemistry, Multidisciplinary
084 _ _ |2 WoS
|a Chemistry, Physical
084 _ _ |2 WoS
|a Materials Science, Multidisciplinary
100 1 _ |a Buitenhuis, J.
|b 0
|u FZJ
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245 _ _ |a Electrophoresis of fd-virus particles: Experiments and an analysis of the effect of finite rod lengths
260 _ _ |a Washington, DC
|b ACS Publ.
|c 2012
300 _ _ |a 13354 - 13363
336 7 _ |a Journal Article
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440 _ 0 |a Langmuir
|x 0743-7463
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|v 28
500 _ _ |a Record converted from VDB: 12.11.2012
520 _ _ |a The electrophoretic mobility of rodlike fd viruses is measured and compared to theory, with the theoretical calculations performed according to Stigter (Stigter, D. Charged Colloidal Cylinder with a Gouy Double-Layer. J. Colloid Interface Sci. 1975, 53, 296-306. Stigter, D. Electrophoresis of Highly Charged Colloidal Cylinders in Univalent Salt- Solutions. 1. Mobility in Transverse Field. J. Phys. Chem. 1978, 82, 1417-1423. Stigter, D. Electrophoresis of Highly Charged Colloidal Cylinders in Univalent Salt Solutions. 2. Random Orientation in External Field and Application to Polyelectrolytes. J. Phys. Chem. 1978, 82, 1424-1429. Stigter, D. Theory of Conductance of Colloidal Electrolytes in Univalent Salt Solutions. J. Phys. Chem. 1979, 83, 1663-1670), who describes the electrophoretic mobility of infinite cylinders including relaxation effects. Using the dissociation constants of the ionizable groups on the surfaces of the fd viruses, we can calculate the mobility without any adjustable parameter (apart from the possible Stern layer thickness). In addition, the approximation in the theoretical description of Stigter (and others) of using a model of infinitely long cylinders, which consequently is independent of the aspect ratio, is examined by performing more elaborate numerical calculations for finite cylinders. It is shown that, although the electrophoretic mobility of cylindrical particles in the limit of low ionic strength depends on the aspect ratio much more than "end effects", at moderate and high ionic strengths the finite and infinite cylinder models differ only to a degree that can be attributed to end effects. Furthermore, the range of validity of the Stokes regime is systematically calculated.
536 _ _ |a BioSoft: Makromolekulare Systeme und biologische Informationsverarbeitung
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773 _ _ |a 10.1021/la302245x
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|v 28
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|x 0743-7463
856 7 _ |u http://dx.doi.org/10.1021/la302245x
909 C O |o oai:juser.fz-juelich.de:23307
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913 1 _ |b Schlüsseltechnologien
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|l BioSoft Fundamentals for future Technologies in the fields of Soft Matter and Life Sciences
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|v Functional Macromolecules and Complexes
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914 1 _ |y 2012
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