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Authors
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Fleischmann, S. ; Komber, H. ; Voit, B.
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Title
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Diblock copolymers as scaffolds for efficient functionalization via click chemistry
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Date
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30.07.2008
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Number
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16151
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Abstract
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A set of different alkyne containing diblock copolymers based on 4-hydroxystyrene was synthesized by nitroxide mediated radical polymerization (NMRP), all with excellent control over the molecular composition and narrow molar mass distribution. The diblock copolymers consist of labile protected 4-hydroxystyrene motifs in one block and bear alkyne functionalities in each repeating unit of the second block, thus making the materials candidates for polymer analogous modification reactions by a very efficient cycloaddition reaction. The use of 4-(trimethylsilylpropargyloxy)styrene as monomer proved highly advantageous compared to 4-(trimethylsilylethynyl) styrene, first because high control was kept in the NMRP process and second because there was higher accessibility in the postmodification reaction. In fact, quantitative postmodification through Cu(I)-catalyzed cycloaddition reaction of the pending propargyloxy groups with bulky adamantane azide of the diblock copolymers was achieved, yielding microphase-separated materials with a rigid block.
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Publisher
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Macromolecules
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Wikidata
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Citation
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Macromolecules 41 (2008) 5255-5564
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DOI
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https://doi.org/10.1021/ma8007493
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Tags
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radical polymerization block-copolymers 1 3-dipolar cycloadditions materials science polymers alkynes azides protection monomers ethers
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