| Issue |
Europhys. Lett.
Volume 60, Number 4, November 2002
|
|
|---|---|---|
| Page(s) | 566 - 572 | |
| Section | Condensed matter: structure, mechanical and thermal properties | |
| DOI | https://doi.org/10.1209/epl/i2002-00256-8 | |
| Published online | 01 November 2002 | |
Structure of polyelectrolytes in poor solvent
Max-Planck-Institut für Polymerforschung -
P.O. Box 3148, 55021 Mainz, Germany
Received:
19
June
2002
Accepted:
6
September
2002
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 
for all densities. This
is a qualitative difference to polyelectrolyte solutions in good
solvent which scale as 
and
in the dilute and semi-dilute concentration
regime, respectively.
PACS: 61.25.Hq – Macromolecular and polymer solutions; polymer melts; swelling / 36.20.Ey – Conformation (statistics and dynamics) / 87.15.Aa – Theory and modeling; computer simulation
© EDP Sciences, 2002
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