title: Archimedean Tilings and Hierarchical Lamellar Morphology Formed by Semicrystalline Miktoarm Star Terpolymer Thin Films.
abstract: 3-Miktoarm star terpolymer architecture provides a window of opportunity in the design of complex "three-colored" patterns at the nanometer scale. Here, the directed self-assembly (DSA) of 3-miktoarm star terpolymer (poly(1,1-dimethyl silacyclobutane)-arm-polystyrene-arm-poly(d,l-lactide acid)) (PDMSB-arm-PS-arm-PLA, noted hereafter 3 μ-DSL) into a hierarchical lamellar morphology is described. Excellent orientational order has been achieved by templating the asymmetric hierarchical lamellar morphology with topographical substrates. Increasing the PLA volume fraction leads to the formation of a hexagonal [6.6.6] Archimedean tiling which coexists with a metastable square symmetry [4.8.8] tiling stabilized by the step between terraces. Stability of the [6.6.6] tiling over the [4.8.8] one is also demonstrated with GISAXS measurements.
authors.affiliation: Laboratoire de Chimie des Polymères Organiques, CNRS, ENSCPB, Université de Bordeaux , 16 Avenue Pey-Berland, F-33607 Cedex Pessac, France.
authors.forename: Karim
authors.initials: K
authors.lastname: Aissou
authors.affiliation: Laboratoire de Chimie des Polymères Organiques, CNRS, ENSCPB, Université de Bordeaux , 16 Avenue Pey-Berland, F-33607 Cedex Pessac, France.
authors.forename: Wonsang
authors.initials: W
authors.lastname: Kwon
authors.affiliation: Laboratoire de Chimie des Polymères Organiques, CNRS, ENSCPB, Université de Bordeaux , 16 Avenue Pey-Berland, F-33607 Cedex Pessac, France.|Groupement de Recherches de Lacq, ARKEMA , RN 117, BP 34, F-64170 Cedex Lacq, France.
authors.forename: Muhammad
authors.initials: M
authors.lastname: Mumtaz
authors.affiliation: Laboratoire de Chimie des Polymères Organiques, CNRS, ENSCPB, Université de Bordeaux , 16 Avenue Pey-Berland, F-33607 Cedex Pessac, France.
authors.forename: Ségolène
authors.initials: S
authors.lastname: Antoine
authors.affiliation: Laboratoire de Science et Ingénierie des Matériaux et Procédés , CNRS-IPB, F-38000 St. Martin D Heres, France.
authors.forename: Mireille
authors.initials: M
authors.lastname: Maret
authors.affiliation: Macromolecular Chemistry & New Polymeric Materials, Zernike Institute for Advanced Materials , Nijenborgh 4, NL-9747 AG Groningen, The Netherlands.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Portale
authors.affiliation: Laboratoire de Chimie des Polymères Organiques, CNRS, ENSCPB, Université de Bordeaux , 16 Avenue Pey-Berland, F-33607 Cedex Pessac, France.
authors.forename: Guillaume
authors.initials: G
authors.lastname: Fleury
authors.affiliation: Laboratoire de Chimie des Polymères Organiques, CNRS, ENSCPB, Université de Bordeaux , 16 Avenue Pey-Berland, F-33607 Cedex Pessac, France.
authors.forename: Georges
authors.initials: G
authors.lastname: Hadziioannou
keywords: 3-miktoarm star terpolymer; Archimedean tiling; directed self-assembly; hierarchical lamellar pattern; topographical substrate