title: Phase transitions in semiflexible-rod diblock copolymers: a self-consistent field theory.
abstract: We investigate the phase behavior of semiflexible-rod diblock copolymers in a parameter range where the system displays columnar and lamella structures, using a self-consistent field theory based on the wormlike-chain model. Both Flory-Huggins and Maier-Saupe orientational interactions are incorporated in the formalism, which allows us to explore microphase separation and liquid-crystal ordering simultaneously. Order-to-order phase transitions induced by chain rigidity and orientational interaction are both reported and analyzed. Coupled orientational ordering and spatial inhomogeneity of the four microphase-separated states are discussed in this work: hexagonal column, ellipse column, smectic-A, and smectic-C.
authors.affiliation: Department of Physics, Wenzhou University, Wenzhou, Zhejiang 325035, China.
authors.forename: Shiben
authors.initials: S
authors.lastname: Li
authors.forename: Ying
authors.initials: Y
authors.lastname: Jiang
authors.forename: Jeff Z Y
authors.initials: JZ
authors.lastname: Chen