Salt-induced collapse and reexpansion of highly charged flexible polyelectrolytes
arXiv:cond-mat/0610164 · doi:10.1103/PhysRevLett.97.148301
Abstract
We study the salt-dependent conformations of dilute flexible polyelectrolytes in solution via computer simulations. Low concentrations of multivalent salt induce the known conformational collapse of individual polyelectrolyte chains, but as the salt concentration is increased further this is followed by a reexpansion. We explicitly demonstrate that multivalent counterions can overcompensate the bare charge of the chain in the reexpansion regime. Both the degree of reexpansion and the occurrence of overcharging sensitively depend on ion size. Our findings are relevant for a wide range of salt-induced complexation phenomena.
References in corpus (7)
- Reentrant Condensation of DNA induced by Multivalent Counterions
- Collapse of Flexible Polyelectrolytes in Multivalent Salt Solutions
- Flexible Linear Polyelectrolytes in Multivalent Salt Solutions: Solubility Conditions
- Overcharging: The Crucial Role of Excluded Volume
- Phase diagram of dilute polyelectrolytes: Collapse and redissolution by association of counterions and coions
- Structure and stability of self-assembled actin-lysozyme complexes in salty water
- Theory and simulations of rigid polyelectrolytes
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