Orthogonal Cationic and Radical RAFT Polymerizations to Prepare Bottlebrush Polymers. (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. Volume 132:Number 18(2020)
• Page Start: 7270
• Page End: 7275
• Publication Date: 2020-03-10
• Subjects: Bottlebrush-Polymere -- Kationische RAFT -- Orthogonale Polymerisation -- Selektive RAFT-Prozesse; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.202000700
• Languages: English
• ISSNs: 0044-8249

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 : Selektiver Kettentransfer zwischen zwei RAFT‐Agenzien ermöglicht orthogonale kationische und radikalische RAFT‐Polymerisationen zur Synthese von Bottlebrush‐Polymeren. Die hohe Effizienz und Selektivität der Polymerisationen erlaubt es, beide in einem Reaktionsgefäß hintereinander ohne Zwischenaufreinigung durchzuführen.