Journal
MACROMOLECULAR RAPID COMMUNICATIONS
Volume 27, Issue 4, Pages 242-246Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.200500744
Keywords
block copolymers; coupling; end-functionalized; functionalization of polymers
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We report the synthesis of well-defined block copolymers by covalent coupling of hydroxy end-functionalized polymers. Using the high volatility of the coupling agent phosgene as compared to the solvent, very high conversion (up to 96%) is obtained in a one-pot reaction with as little as 10(-5) moles of each of the reacting polymers, even without prior purification of the as-received reagents. This has potential as an alternative to the currently practiced method of sequential living polymerization of constituent monomers, with the added advantage of direct knowledge and control over the length distribution of each block.
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