title: Monte Carlo simulation of self-assembly of symmetric ABC three-arm star copolymers under cylindrical confinement.
abstract: Self-assembly of symmetric ABC three-arm star copolymers confined in cylindrical nanopores is investigated by means of a lattice Monte Carlo simulation method. The dependence of morphologies on the degree of confinement and preference of pore surface is studied systematically. For the symmetric ABC three-arm star copolymers which form polygonal cylinder structures with periodic spacing L(0) in bulk, various novel structures are observed inside the nanopores. In the nanopores with a neutral surface, we find a minimum diameter value (D(min) ≈ L(0)) under which helical arranged droplets are formed; otherwise, parallel polygonal cylinder structures are identified. By adjusting the preference between component A and the pore surfaces, a number of novel structures such as A cylinder + BC single-strand helix and complex multilayer double helices are identified. Additionally, the confinement-induced morphology transition is interpreted by the frustration parameter D/L(0).
authors.affiliation: State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China.
authors.forename: Jianhui
authors.initials: J
authors.lastname: Song
authors.forename: Tongfei
authors.initials: T
authors.lastname: Shi
authors.forename: Jizhong
authors.initials: J
authors.lastname: Chen
authors.forename: Lijia
authors.initials: L
authors.lastname: An