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Phys. Rev. Lett. 86, 2341–2344 (2001)

Counterion Phase Transitions in Dilute Polyelectrolyte Solutions

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Alexander Deshkovski1, Sergei Obukhov2, and Michael Rubinstein1
1Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599-3290
2Physics Department, University of Florida, Gainesville, Florida 32611-8440

Received 10 August 2000; published in the issue dated 12 March 2001

In dilute solutions of rodlike polyelectrolytes some counterions are distributed far from polyions while others are located in their vicinity in the regions of cylindrical symmetry of the electrostatic potential. For these cylindrical regions around rodlike polyelectrolytes we find an exact solution of the nonlinear Poisson-Boltzmann equation for the case of nonzero net charge in these regions. This exact solution implies three qualitatively different phases of counterion distribution around the polyions with second order phase transitions between these phases.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.86.2341
DOI:
10.1103/PhysRevLett.86.2341
PACS:
61.25.Hq, 64.70.-p, 82.60.Lf, 87.15.-v