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Orthogonal Cationic and Radical RAFT Polymerizations to Prepare Bottlebrush Polymers
Author(s) -
Tanaka Joji,
Häkkinen Satu,
Boeck Parker T.,
Cong Yidan,
Perrier Sébastien,
Sheiko Sergei S.,
You Wei
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202000700
Subject(s) - raft , reversible addition−fragmentation chain transfer polymerization , cationic polymerization , chain transfer , radical polymerization , chemistry , polymer chemistry , polymerization , monomer , living free radical polymerization , living cationic polymerization , polymer , vinyl ether , organic chemistry
Abstract An orthogonal combination of cationic and radical RAFT polymerizations is used to synthesize bottlebrush polymers using two distinct RAFT agents. Selective consumption of the first RAFT agent is used to control the cationic RAFT polymerization of a vinyl ether monomer bearing a secondary dormant RAFT agent, which subsequently allows side‐chain polymers to be grafted from the pendant RAFT agent by a radical‐mediated RAFT polymerization of a different monomer, thus completing the synthesis of bottlebrush polymers. The high efficiency and selectivity of the cationic and radical RAFT polymerizations allow both polymerizations to be conducted in one‐pot tandem without intermediate purification.