Orthogonal Cationic and Radical RAFT Polymerizations to Prepare Bottlebrush Polymers. Issue 18 (10th March 2020)

• Record Type: Journal Article
• Authors: Tanaka, Joji; Häkkinen, Satu; Boeck, Parker T.; Cong, Yidan; Perrier, Sébastien; Sheiko, Sergei S.; You, Wei
• Is Part Of: Angewandte Chemie international edition. Volume 59:Issue 18(2020)
• Page Start: 7203
• Page End: 7208
• Publication Date: 2020-03-10
• Subjects: bottlebrush polymers -- cationic RAFT -- orthogonal polymerization -- selective RAFT process; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.202000700
• Languages: English
• ISSNs: 1433-7851

Abstract

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. Abstract : Selective chain transfer between two RAFT agents enabled orthogonal cationic and radical RAFT polymerizations to synthesize bottlebrush polymers. The high efficiency and selectivity of the polymerizations allow both to be conducted in one‐pot tandem without intermediate purification.