We present molecular dynamics simulations on strongly charged polyelectrolytes
in poor solvent. The resulting pearl-necklace conformations are analyzed
in detail. Fluctuations in the number of pearls and their sizes lead
only to small signatures in the form factor and the force-extension
relation, which is a severe obstacle for experimental observations.
We find that the position of the first peak in the structure factor
varies with the monomer density as $\rho^0.35$ for all
densities. This is a qualitative difference to polyelectrolyte solutions
in good solvent which scale as $\rho^1/3$ and $\rho^1/2$ in the
dilute and semi-dilute concentration regime, respectively.
%0 Journal Article
%1 limbach02c
%A Limbach, H. J.
%A Holm, C.
%A Kremer, K.
%D 2002
%J Europhys. Lett.
%K chain coexistence, density dependence, dynamics factor factor, fluctuation, force-extension form length molecular necklace, peak, pearl polyelctrolytes, poor relation scaling, simulation, single solvent, structure type
%N 4
%P 566--572
%T Structure of polyelectrolytes in poor solvent
%V 60
%X We present molecular dynamics simulations on strongly charged polyelectrolytes
in poor solvent. The resulting pearl-necklace conformations are analyzed
in detail. Fluctuations in the number of pearls and their sizes lead
only to small signatures in the form factor and the force-extension
relation, which is a severe obstacle for experimental observations.
We find that the position of the first peak in the structure factor
varies with the monomer density as $\rho^0.35$ for all
densities. This is a qualitative difference to polyelectrolyte solutions
in good solvent which scale as $\rho^1/3$ and $\rho^1/2$ in the
dilute and semi-dilute concentration regime, respectively.
@article{limbach02c,
abstract = {We present molecular dynamics simulations on strongly charged polyelectrolytes
in poor solvent. The resulting pearl-necklace conformations are analyzed
in detail. Fluctuations in the number of pearls and their sizes lead
only to small signatures in the form factor and the force-extension
relation, which is a severe obstacle for experimental observations.
We find that the position of the first peak in the structure factor
varies with the monomer density as $\approx \rho^{0.35}$ for all
densities. This is a qualitative difference to polyelectrolyte solutions
in good solvent which scale as $\rho^{1/3}$ and $\rho^{1/2}$ in the
dilute and semi-dilute concentration regime, respectively.},
added-at = {2007-06-15T17:33:15.000+0200},
author = {Limbach, H. J. and Holm, C. and Kremer, K.},
biburl = {https://www.bibsonomy.org/bibtex/2c214033535832e158241df2ce169e615/kaigrass},
eprint = {cond-mat/0206274},
interhash = {0193bcc59016678f5c7cf7e3254efe53},
intrahash = {c214033535832e158241df2ce169e615},
journal = {Europhys. Lett.},
keywords = {chain coexistence, density dependence, dynamics factor factor, fluctuation, force-extension form length molecular necklace, peak, pearl polyelctrolytes, poor relation scaling, simulation, single solvent, structure type},
number = 4,
pacs = {61.25.Hq, 36.20.Ey, 87.15Aa},
pages = {566--572},
timestamp = {2007-06-15T17:33:21.000+0200},
title = {Structure of polyelectrolytes in poor solvent},
volume = 60,
year = 2002
}