ArticleAngewandte Chemie (International ed. in English)2026
Degradable Alternating Copolymers With Strained Cyclobutane Backbones via Photocontrolled RAFT Polymerization.
Article in Angewandte Chemie (International ed. in English), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- Degradable Alternating Copolymers With Strained Cyclobutane Backbones via Photocontrolled RAFT Polymerization.Angewandte Chemie (International ed. in English) · 2026Article
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Authors and funding
5 authors.
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Abstract
In this study, we report a reversible addition-fragmentation chain transfer (RAFT) alternating copolymerization of 1,3-disubstituted bicyclo[1.1.0]butanes (BCBs) with maleimides, maleic anhydride, or bio-based fumarate derivatives, affording a class of well-defined copolymers with strained cyclobutane backbones. Under visible-light irradiation, a chain transfer agent (CTA)-mediated photoiniferter process delivers BCB-derived copolymers with a high degree of alternation, tunable molecular weights, and excellent end-group fidelity. Our design leverages electronically and sterically tuned BCB monomers bearing an aryl substituent at one bridgehead and an electron-withdrawing group at the other, facilitating precise control over radical reactivity and selective cross-propagation. The resulting polymers exhibit high thermal stability with decomposition temperature up to 429°C, yet undergo highly efficient degradation under mechanical stimulation.
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