title: Bulk microphase segregation of an asymmetric organometallic-inorganic diblock copolymer: a remarkable example of concentric cylinders.
abstract: We report that an asymmetric diblock copolymer, poly(ferrocenyldimethylsilane-b-dimethylsiloxane) (PFS90-b-PDMS900, PDI = 1.01, volume fraction PFS = 0.20), self-assembles in the bulk state to form a hexagonal periodic structure with a remarkable morphology. Part of the major component forms the core of concentric cylinders with a mean diameter of 35.5 nm surrounded by a 7 nm thick shell of PFS. The remaining PDMS fills the interstitial spaces. The morphology was elucidated by small-angle X-ray scattering, as well as by scanning and conventional transmission electron microscopy.
authors.affiliation: Department of Chemistry, University of Toronto, 80 St. George Street, Ontario, Canada M5S 3H6.
authors.forename: Jose
authors.initials: J
authors.lastname: Raez
authors.forename: Yuanming
authors.initials: Y
authors.lastname: Zhang
authors.forename: Lan
authors.initials: L
authors.lastname: Cao
authors.forename: Srebri
authors.initials: S
authors.lastname: Petrov
authors.forename: Kurt
authors.initials: K
authors.lastname: Erlacher
authors.forename: Ulrich
authors.initials: U
authors.lastname: Wiesner
authors.forename: Ian
authors.initials: I
authors.lastname: Manners
authors.forename: Mitchell A
authors.initials: MA
authors.lastname: Winnik