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Supramolecularly Catalyzed Polymerization: From Consecutive Dimerization to Polymerization
Author(s) -
Tang Xiaoyan,
Huang Zehuan,
Chen Hao,
Kang Yuetong,
Xu JiangFei,
Zhang Xi
Publication year - 2018
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201803749
Subject(s) - polymerization , supramolecular chemistry , chemistry , monomer , polymer chemistry , catalysis , supramolecular polymers , polymer , covalent bond , polyelectrolyte , reversible addition−fragmentation chain transfer polymerization , supramolecular catalysis , combinatorial chemistry , radical polymerization , organic chemistry , molecule
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, 10 mol % 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.