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@ARTICLE{Buitenhuis:23307,
author = {Buitenhuis, J.},
title = {{E}lectrophoresis of fd-virus particles: {E}xperiments and
an analysis of the effect of finite rod lengths},
journal = {Langmuir},
volume = {28},
issn = {0743-7463},
address = {Washington, DC},
publisher = {ACS Publ.},
reportid = {PreJuSER-23307},
pages = {13354 - 13363},
year = {2012},
note = {Record converted from VDB: 12.11.2012},
abstract = {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.},
keywords = {J (WoSType)},
cin = {ICS-3},
ddc = {670},
cid = {I:(DE-Juel1)ICS-3-20110106},
pnm = {BioSoft: Makromolekulare Systeme und biologische
Informationsverarbeitung},
pid = {G:(DE-Juel1)FUEK505},
shelfmark = {Chemistry, Multidisciplinary / Chemistry, Physical /
Materials Science, Multidisciplinary},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:22958165},
UT = {WOS:000308787700028},
doi = {10.1021/la302245x},
url = {https://juser.fz-juelich.de/record/23307},
}