期刊
NATURE CHEMISTRY
卷 6, 期 9, 页码 815-821出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/NCHEM.2023
关键词
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资金
- Agency for Innovation by Science and Technology in Flanders
- Research Foundation-Flanders (FWO)
- FWO (Vlaanderen)
- Research Board of Ghent University
- Belgian Science Policy Office Interuniversity Attraction Poles (IAP) programme [IAP 7/05]
With its focus on synthetic reactions that are highly specific and reliable, 'click' chemistry has become a valuable tool for many scientific research areas and applications. Combining the modular, covalently bonded nature of click-chemistry linkages with an ability to reverse these linkages and reuse the constituent reactants in another click reaction, however, is a feature that is not found in most click reactions. Here we show that triazolinedione compounds can be used in click-chemistry applications. We present examples of simple and ultrafast macromolecular functionalization, polymer-polymer linking and polymer crosslinking under ambient conditions without the need for a catalyst. Moreover, when triazolinediones are combined with indole reaction partners, the reverse reaction can also be induced at elevated temperatures, and the triazolinedione reacted with a different reaction partner, reversibly or irreversibly dependent on its exact nature. We have used this 'transclick' reaction to introduce thermoreversible links into polyurethane and polymethacrylate materials, which allows dynamic polymer-network healing, reshaping and recycling.
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