This work was supported in part by JSPS Research Fellowships for Young Scientists for H.A. (No. 24-10127), a Grant-in-Aid for Young Scientists (A) (No. 23685023) and Scientific Research (A) (No. 26248032) for K.S. by the Japan Society for the Promotion of Science, and Program for Leading Graduate Schools “Integrative Graduate Education and Research Program in Green Natural Sciences”.
Interconvertible Living Radical and Cationic Polymerization through Reversible Activation of Dormant Species with Dual Activity†
Article first published online: 11 AUG 2014
© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Angewandte Chemie International Edition
Volume 53, Issue 41, pages 10932–10936, October 6, 2014
How to Cite
Aoshima, H., Uchiyama, M., Satoh, K. and Kamigaito, M. (2014), Interconvertible Living Radical and Cationic Polymerization through Reversible Activation of Dormant Species with Dual Activity. Angew. Chem. Int. Ed., 53: 10932–10936. doi: 10.1002/anie.201406590
- Issue published online: 29 SEP 2014
- Article first published online: 11 AUG 2014
- Manuscript Received: 25 JUN 2014
- Japan Society for the Promotion of Science
- block copolymers;
- dual activity;
The polymerization of vinyl monomers generally requires the selection of an appropriate single intermediate, whereas in copolymerization, the selection of the comonomer is limited by the intermediate. Herein, we propose interconvertible dual active species that can connect comonomers through different mechanisms to produce specific comonomer sequences in a single polymer chain. More specifically, two different stimuli, that is, a radical initiator and a Lewis acid, are used to activate the common dormant CSC(S)Z group into radical and cationic species, thereby inducing interconvertible radical and cationic copolymerization of acrylate and vinyl ether to produce a copolymer chain that consists of radically and cationically polymerized segments. The dual reversible activation provides control over molecular weights and multiblock copolymers with tunable segment lengths.