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Structure Formation of Metallopolymer-Grafted Block Copolymers

Ruettiger, Christian and Appold, Michael and Didzoleit, Haiko and Eils, Adjana and Dietz, Christian and Stark, Robert W. and Stühn, B. and Gallei, Markus (2016):
Structure Formation of Metallopolymer-Grafted Block Copolymers.
In: Macromolecules, pp. 3415-3426, 49, (9), ISSN 0024-9297,
[Online-Edition: http://dx.doi.org/10.1021/acs.macromol.6b00577],
[Article]

Abstract

Microphase separation drives the structure formation in block copolymers. Here, functional metallopolymer-grafted diblock copolymers consisting of polystyrene-block-polyisoprene (PS-b-PI) as polymer backbone featuring low molar mass polyferrocenyldimethylsilane (PFS) and polyvinylferrocene (PVFc) are synthesized via an iterative anionic grafting-to polymerization strategy. PS-b-PI block copolymers having about 30 mol % 1,2-polyisoprene moieties are subjected to platinum-catalyzed hydrosilylation reaction for the introductiorr of chlorosilane groups. The Si Cl moieties are shown to efficiently react with the active metallopolymers yielding :block-selective metallopolymer-grafted copolymers with 34 vol % PVFc and 43 vol % PFS as evidenced by H-1 NMR spectroscopy as well as size exclusion chromatography. The microphase separation of the functional metallopolyiner-grafted block copolymers is evidenced via TEM measurements revealing fascinating morphologies. The structure formation of the PVFc-grafted block copolymers is, studied in more detail by small-angle X-ray scattering, wide-angle X-ray scattering, and atomic force microscopy measurements evidencing a lamellar, morphology featuring a spherical substructure for the PVFc segments, inside the polyisoprene lamellae.

Item Type: Article
Erschienen: 2016
Creators: Ruettiger, Christian and Appold, Michael and Didzoleit, Haiko and Eils, Adjana and Dietz, Christian and Stark, Robert W. and Stühn, B. and Gallei, Markus
Title: Structure Formation of Metallopolymer-Grafted Block Copolymers
Language: English
Abstract:

Microphase separation drives the structure formation in block copolymers. Here, functional metallopolymer-grafted diblock copolymers consisting of polystyrene-block-polyisoprene (PS-b-PI) as polymer backbone featuring low molar mass polyferrocenyldimethylsilane (PFS) and polyvinylferrocene (PVFc) are synthesized via an iterative anionic grafting-to polymerization strategy. PS-b-PI block copolymers having about 30 mol % 1,2-polyisoprene moieties are subjected to platinum-catalyzed hydrosilylation reaction for the introductiorr of chlorosilane groups. The Si Cl moieties are shown to efficiently react with the active metallopolymers yielding :block-selective metallopolymer-grafted copolymers with 34 vol % PVFc and 43 vol % PFS as evidenced by H-1 NMR spectroscopy as well as size exclusion chromatography. The microphase separation of the functional metallopolyiner-grafted block copolymers is evidenced via TEM measurements revealing fascinating morphologies. The structure formation of the PVFc-grafted block copolymers is, studied in more detail by small-angle X-ray scattering, wide-angle X-ray scattering, and atomic force microscopy measurements evidencing a lamellar, morphology featuring a spherical substructure for the PVFc segments, inside the polyisoprene lamellae.

Journal or Publication Title: Macromolecules
Volume: 49
Number: 9
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Physics of Surfaces
Exzellenzinitiative
Exzellenzinitiative > Clusters of Excellence
05 Department of Physics
05 Department of Physics > Institute for condensed matter physics
05 Department of Physics > Institute for condensed matter physics > Experimental Condensed Matter Physics
Zentrale Einrichtungen
Date Deposited: 08 Jun 2016 12:20
Official URL: http://dx.doi.org/10.1021/acs.macromol.6b00577
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