Counterion correlations and attraction between like-charged macromolecules.

@article{Diehl2001CounterionCA,
  title={Counterion correlations and attraction between like-charged macromolecules.},
  author={Alexandre Diehl and Humberto A. Carmona and Yan Levin},
  journal={Physical review. E, Statistical, nonlinear, and soft matter physics},
  year={2001},
  volume={64 1 Pt 1},
  pages={
          011804
        }
}
A simple model is presented for the appearance of attraction between two like-charged polyions inside a polyelectrolyte solution. The polyions are modeled as rigid cylinders in a continuum dielectric solvent. The strong electrostatic interaction between the polyions and the counterions results in counterion condensation. If the two polyions are sufficiently close to each other their layers of condensed counterions can become correlated resulting in attraction between the macromolecules. To… Expand
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References

SHOWING 1-2 OF 2 REFERENCES
Intermolecular and surface forces
The Forces between Atoms and Molecules. Principles and Concepts. Historical Perspective. Some Thermodynamic Aspects of Intermolecular Forces. Strong Intermolecular Forces: Covalent and CoulombExpand
Physical Questions Posed by DNA Condensation
TLDR
Two physical problems are explored: the origin of the attractive interactions between the highly-negatively charged DNA chains that cause them to concentrate into bundles, and the mechanism that provents the bundles from growing indefinitely large. Expand