Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 57, Issue 28, Pages 8545-8549Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201803749
Keywords
cucurbituril; host-guest systems; polymer chemistry; supramolecular catalysis; supramolecular chemistry
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Funding
- National Natural Science Foundation of China [21434004]
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Herein, we propose a new method for promoting covalent polymerization by supramolecular catalysts. To this end, we employed cucurbit[8]uril (CB[8]) as a supramolecular catalyst, and successfully prepared polyelectrolytes in an aqueous solution by taking advantage of the CB[8]-enhanced photodimerization of Brooker merocyanine moieties. Interestingly, 10mol% CB[8] is enough to effectively catalyze this polymerization, because CB[8] can be spontaneously replaced by terminal groups from photodimerized products. In addition, the molecular weights of the obtained polyelectrolytes can be varied by the irradiation time or the monomer. By combining supramolecular catalysis and polymer chemistry, this line of research may enrich the methodology of polymerization and open up new horizons for supramolecular polymer chemistry.
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