paper

Orientationally ordered aggregates of stiff polyelectrolytes in the presence of multivalent salt

arXiv:0901.1740 · doi:10.1039/b815953j

Abstract

Aggregation of stiff polyelectrolytes in solution and angle- and distance-dependent potential of mean force between two like-charged rods are studied in the presence of 3-valent salt using molecular dynamics simulations. In the bulk solution, formation of long-lived metastable structures with similarities to the raft-like structures of actin filaments is observed within a range of salt concentration. The system finally goes to a state with lower free energy in which finite-sized bundles of parallel polyelectrolytes form. Preferred angle and interaction type between two like-charged rods at different separations and salt concentrations are also studied, which shed some light on the formation of orientationally ordered structures.

arXiv comment18 pages, 8 figures, accepted for publication in Soft Matter

References in corpus (14)

Cited by in corpus (3)