Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 59, Issue 51, Pages 22983-22988Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202009165
Keywords
copolymerization; homogeneous catalysis; polyolefin; postpolymerization modification; telechelic polypropylene
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Funding
- National Science Foundation [1706911]
- RoyJ. Carver Charitable Trust (Muscatine, Iowa) [15-4521]
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [1706911] Funding Source: National Science Foundation
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The synthesis of stereoregular telechelic polypropylene (PP) and their use to access triblock amphiphilic copolymers with the PP block located in the center is described. The strategy consists of selectively copolymerizing propylene and a di-functional co-monomer (1,3-diisopropenylbenzene) to yield a alpha,omega-substituted polypropylene. Initiation of the copolymerization favors insertion of DIB over propylene; propagation steps favor insertion of propylene. Termination via a chain-transfer reaction yields the terminal unsaturation of the polymer. The telechelic polypropylene is then converted into alpha,omega-hydroxyl-terminated polypropylene and used as a macroinitiator for the synthesis of triblock copolymers. Water-soluble amphiphilic triblock polymers are also synthesized. The use of catalytic reactions simultaneously provides the stereocontrol of the polypropylene and high productivity (multiple chains of block copolymer per metal center).
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