title: Multicomponent Nanomaterials with Complex Networked Architectures from Orthogonal Degradation and Binary Metal Backfilling in ABC Triblock Terpolymers.
abstract: Selective degradation of block copolymer templates and backfilling the open mesopores is an effective strategy for the synthesis of nanostructured hybrid and inorganic materials. Incorporation of more than one type of inorganic material in orthogonal ways enables the synthesis of multicomponent nanomaterials with complex yet well-controlled architectures; however, developments in this field have been limited by the availability of appropriate orthogonally degradable block copolymers for use as templates. We report the synthesis and self-assembly into cocontinuous network structures of polyisoprene-block-polystyrene-block-poly(propylene carbonate) where the polyisoprene and poly(propylene carbonate) blocks can be orthogonally removed from the polymer film. Through sequential block etching and backfilling the resulting mesopores with different metals, we demonstrate first steps toward the preparation of three-component polymer-inorganic hybrid materials with two distinct metal networks. Multiblock copolymers in which two blocks can be degraded and backfilled independently of each other, without interference from the other, may be used in a wide range of applications requiring periodically ordered complex multicomponent nanoarchitectures.
authors.affiliation: †Department of Chemistry and Chemical Biology, Cornell University, Baker Laboratory, Ithaca, New York 14853, United States.
authors.forename: Christina D
authors.initials: CD
authors.lastname: Cowman
authors.affiliation: ‡Department of Applied and Engineering Physics, Cornell University, Clark Hall, Ithaca, New York 14853, United States.
authors.forename: Elliot
authors.initials: E
authors.lastname: Padgett
authors.affiliation: §Department of Materials Science and Engineering, Cornell University, Bard Hall, Ithaca, New York 14853, United States.
authors.forename: Kwan Wee
authors.initials: KW
authors.lastname: Tan
authors.affiliation: ‡Department of Applied and Engineering Physics, Cornell University, Clark Hall, Ithaca, New York 14853, United States.
authors.forename: Robert
authors.initials: R
authors.lastname: Hovden
authors.affiliation: §Department of Materials Science and Engineering, Cornell University, Bard Hall, Ithaca, New York 14853, United States.
authors.forename: Yibei
authors.initials: Y
authors.lastname: Gu
authors.affiliation: ‡Department of Applied and Engineering Physics, Cornell University, Clark Hall, Ithaca, New York 14853, United States.
authors.forename: Nina
authors.initials: N
authors.lastname: Andrejevic
authors.affiliation: ‡Department of Applied and Engineering Physics, Cornell University, Clark Hall, Ithaca, New York 14853, United States.
authors.forename: David
authors.initials: D
authors.lastname: Muller
authors.affiliation: †Department of Chemistry and Chemical Biology, Cornell University, Baker Laboratory, Ithaca, New York 14853, United States.
authors.forename: Geoffrey W
authors.initials: GW
authors.lastname: Coates
authors.affiliation: §Department of Materials Science and Engineering, Cornell University, Bard Hall, Ithaca, New York 14853, United States.
authors.forename: Ulrich
authors.initials: U
authors.lastname: Wiesner
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