Pattern formation on the surface of cationic-anionic cylindrical aggregates.
Charged pattern formation on the surfaces of self-assembled cylindrical micelles formed from oppositely charged heterogeneous molecules such as cationic and anionic peptide amphiphiles is investigated. The net incompatibility chi among different components results in the formation of segregated domains, whose growth is inhibited by electrostatics. The transition to striped phases proceeds through an intermediate structure governed by fluctuations, followed by states with various lamellar orientations, which depend on cylinder radius Rc and chi. We analyze the specific heat, susceptibility S(q*), domain size Lambda = 2pi/q*, and morphology as a function of Rc and chi.
Velichko
Y S
YS
Department of Material Science and Engineering, Northwestern University, Illinois 60208, USA.
de la Cruz
M Olvera
MO
D000838:Anions / Q000737:chemistry*; D002412:Cations / Q000737:chemistry*; D003102:Colloids / Q000737:chemistry*; D003198:Computer Simulation; D003460:Crystallization / Q000379:methods*; D008563:Membrane Lipids / Q000737:chemistry*; D008823:Micelles; D008956:Models, Chemical; D008958:Models, Molecular; D044367:Phase Transition; D055672:Static Electricity
D000838:Anions; D002412:Cations; D003102:Colloids; D008563:Membrane Lipids; D008823:Micelles