Advanced

Complex formation in solutions of oppositely charged polyelectrolytes at different polyion compositions and salt content

Hayashi, Yoshikatsu LU ; Ullner, Magnus LU and Linse, Per LU (2003) In The Journal of Physical Chemistry Part B 107(32). p.8198-8207
Abstract
The formation of complexes in solutions containing positively charged polyions (polycations) and a variable amount of negatively charged polyions (polyanions) has been investigated by Monte Carlo simulations. The polyions were described as flexible chains of charged hard spheres interacting through a screened Coulomb potential. The systems were analyzed in terms of cluster compositions, structure factors, and radial distribution functions. At 50% charge equivalence or less, complexes involving two polycations

nd one polyanion were frequent, while closer to charge equivalence, larger clusters were formed. Small and neutral complexes dominated the solution at charge equivalence in a monodisperse system, while larger clusters again... (More)
The formation of complexes in solutions containing positively charged polyions (polycations) and a variable amount of negatively charged polyions (polyanions) has been investigated by Monte Carlo simulations. The polyions were described as flexible chains of charged hard spheres interacting through a screened Coulomb potential. The systems were analyzed in terms of cluster compositions, structure factors, and radial distribution functions. At 50% charge equivalence or less, complexes involving two polycations

nd one polyanion were frequent, while closer to charge equivalence, larger clusters were formed. Small and neutral complexes dominated the solution at charge equivalence in a monodisperse system, while larger clusters again dominated the solution when the polyions were made polydisperse. The cluster composition and solution structure were also examined as functions of added salt by varying the electrostatic screening length. The observed formation of clusters could be rationalized by a few simple rules. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
The Journal of Physical Chemistry Part B
volume
107
issue
32
pages
8198 - 8207
publisher
The American Chemical Society
external identifiers
  • wos:000184665000029
  • scopus:0041386467
ISSN
1520-5207
DOI
language
English
LU publication?
yes
id
18c560e9-ecf4-4b78-91a7-e45ff1eceff8 (old id 122013)
date added to LUP
2007-07-11 12:08:09
date last changed
2018-06-10 04:42:57
@article{18c560e9-ecf4-4b78-91a7-e45ff1eceff8,
  abstract     = {The formation of complexes in solutions containing positively charged polyions (polycations) and a variable amount of negatively charged polyions (polyanions) has been investigated by Monte Carlo simulations. The polyions were described as flexible chains of charged hard spheres interacting through a screened Coulomb potential. The systems were analyzed in terms of cluster compositions, structure factors, and radial distribution functions. At 50% charge equivalence or less, complexes involving two polycations <br/><br>
nd one polyanion were frequent, while closer to charge equivalence, larger clusters were formed. Small and neutral complexes dominated the solution at charge equivalence in a monodisperse system, while larger clusters again dominated the solution when the polyions were made polydisperse. The cluster composition and solution structure were also examined as functions of added salt by varying the electrostatic screening length. The observed formation of clusters could be rationalized by a few simple rules.},
  author       = {Hayashi, Yoshikatsu and Ullner, Magnus and Linse, Per},
  issn         = {1520-5207},
  language     = {eng},
  number       = {32},
  pages        = {8198--8207},
  publisher    = {The American Chemical Society},
  series       = {The Journal of Physical Chemistry Part B},
  title        = {Complex formation in solutions of oppositely charged polyelectrolytes at different polyion compositions and salt content},
  url          = {http://dx.doi.org/},
  volume       = {107},
  year         = {2003},
}