Facile postpolymerization end‐modification of RAFT polymers |
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Authors: | Jason M Spruell Benjamin A Levy Alexander Sutherland William R Dichtel Joy Y Cheng J Fraser Stoddart Alshakim Nelson |
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Institution: | 1. Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208;2. IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120 |
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Abstract: | One‐pot methods for the end‐group postpolymerization modification of reversible addition fragmentation chain transfer (RAFT) derived polymers were investigated. Dithioester‐terminated polymers were transformed into ω‐functionalized polymers through conjugate addition of a variety of acrylates with an intermediate thiol. These methods provide a versatile means of introducing a variety of functionalities onto the polymer terminus, while simultaneously removing the residual dithiobenzoate group. A series of functionalized polymethylmethacrylate‐b‐polystyrene (PMMA‐b‐PS) polymers were synthesized utilizing the developed methods to probe the effect of charged end groups on diblock copolymer phase separation in thin films. © 2008 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 346–356, 2009 |
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Keywords: | block copolymer phase separation postpolymerization modification reduction/conjugation reversible addition fragmentation chain transfer (RAFT) |
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