Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 54, Issue 51, Pages 15520-15524Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201507274
Keywords
copolymerization; olefin polymerization; palladium catalysis; polar monomers; redox chemistry
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Funding
- National Natural Science Foundation of China (NSFC) [21374108, 51522306]
- Fundamental Research Funds for the Central Universities [WK3450000001]
- Recruitment Program of Global Experts
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The facile and reversible interconversion between neutral and oxidized forms of palladium complexes containing ferrocene-bridged phosphine sulfonate ligands was demonstrated. The activity of these palladium complexes could be controlled using redox reagents during ethylene homopolymerization, ethylene/methyl acrylate copolymerization, and norbornene oligomerization. Specifically in norbornene oligomerization, the neutral complexes were not active at all whereas the oxidized counterparts showed appreciable activity. In situ switching between the neutral and oxidized forms resulted in an interesting off and on behavior in norbornene oligomerization. This work provides a new strategy to control the olefin polymerization process.
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