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@ARTICLE{Zettl:61894,
author = {Zettl, H. and Zettl, U. and Krausch, G. and Enderlein, J.
and Ballauff, M.},
title = {{D}irect observation of single molecule mobility in
semidilute polymer solutions},
journal = {Physical review / E},
volume = {75},
number = {6},
issn = {1539-3755},
address = {College Park, Md.},
publisher = {APS},
reportid = {PreJuSER-61894},
pages = {061804},
year = {2007},
note = {Record converted from VDB: 12.11.2012},
abstract = {We determine the mobility of dye-labeled polystyrene
molecules in solution by fluorescence correlation
spectroscopy (FCS) over a wide range of concentrations and
molecular weights (ranging from 3.9x10(3) to 1550x10(3)
g/mol). In order to obtain absolute values of the diffusion
coefficient, which can be compared to diffusion coefficients
determined by other methods, the size of the focal volume
has been determined by independent experiments and
theoretical calculations. All data demonstrate that FCS is
uniquely suited to explore polymer dynamics in solution. The
mobility of the chains as expressed through the
self-diffusion coefficient is significantly slowed down
above the overlap concentration c(*). The dependence of c(*)
on molecular weight is well described by the power law
c(*)proportional to M-w(1-3 nu) (nu: Flory exponent). A
comparison with the data taken from the literature
demonstrates that the overlap concentration presents a
robust concept that holds for a wide range of molecular
weights.},
keywords = {J (WoSType)},
cin = {INB-1},
ddc = {530},
cid = {I:(DE-Juel1)VDB804},
pnm = {Funktion und Dysfunktion des Nervensystems},
pid = {G:(DE-Juel1)FUEK409},
shelfmark = {Physics, Fluids $\&$ Plasmas / Physics, Mathematical},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000247624000090},
doi = {10.1103/PhysRevE.75.061804},
url = {https://juser.fz-juelich.de/record/61894},
}