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Programmable Modulation of Co‐monomer Relative Reactivities for Living Coordination Polymerization through Reversible Chain Transfer between “Tight” and “Loose” Ion Pairs
Author(s) -
Wei Jia,
Zhang Wei,
Wickham Rennisha,
Sita Lawrence R.
Publication year - 2010
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201004709
Subject(s) - cationic polymerization , polyolefin , monomer , cyclopentene , polymerization , copolymer , chain transfer , polymer chemistry , dispersity , chemistry , polymer science , photochemistry , catalysis , materials science , organic chemistry , radical polymerization , polymer , layer (electronics)
Not leaving anything to chance : Rapid and reversible exchange between “tight” and “loose” ion pairs was used to modulate the relative reactivities of ethene and 1‐hexene or cyclopentene in a programmed fashion for living coordination chain‐transfer polymerization. Thus, different grades of a monodisperse polyolefin copolymer, such as the poly(ethene‐ co ‐1‐hexene) samples shown, could be obtained with a single cationic transition‐metal catalyst.