title: Reentrant ordering transition of asymmetric copolymer solution film confined between polymer-grafted surfaces.
abstract: We study the equilibrium morphology of an asymmetric A-B diblock copolymer solution film confined between homopolymer-grafted substrates by using self-consistent-field calculations. We find that on decreasing the copolymer concentration, a reentrant structural transformation between hexagonal --> lamellar --> hexagonal phases occurs as a result of the competition between the wetting effect of the brush surface and the bulk phase behavior of the asymmetric copolymer driven by the A-B interfacial tension.
authors.affiliation: National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China.
authors.forename: Chun-lai
authors.initials: CL
authors.lastname: Ren
authors.forename: Yu-qiang
authors.initials: YQ
authors.lastname: Ma