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Aggregation of rod-like polyelectrolyte chains in the presence of monovalent counterions.
- Source :
- Journal of Chemical Physics; 12/21/2012, Vol. 137 Issue 23, p234901, 7p, 5 Graphs
- Publication Year :
- 2012
-
Abstract
- Using molecular dynamics simulations, it is demonstrated that monovalent counterions can induce aggregation of similarly charged rod-like polyelectrolyte chains. The critical value of the linear charge density for aggregation is shown to be close to the critical value for the extended-collapsed transition of a single flexible polyelectrolyte chain, and decreases with increasing valency of the counterions. The potential of mean force along the center of mass reaction coordinate between two similarly charged rod-like polyelectrolytes is shown to develop an attractive well for large linear charge densities. In the attractive regime, the angular distribution of the condensed counterions is no longer isotropic. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00219606
- Volume :
- 137
- Issue :
- 23
- Database :
- Complementary Index
- Journal :
- Journal of Chemical Physics
- Publication Type :
- Academic Journal
- Accession number :
- 84461930
- Full Text :
- https://doi.org/10.1063/1.4771920