Supramolecularly Catalyzed Polymerization: From Consecutive Dimerization to Polymerization. (7th June 2018)

• Record Type: Journal Article
• Authors: Tang, Xiaoyan; Huang, Zehuan; Chen, Hao; Kang, Yuetong; Xu, Jiang‐Fei; Zhang, Xi
• Is Part Of: Angewandte Chemie. Volume 130:Number 28(2018)
• Page Start: 8681
• Page End: 8685
• Publication Date: 2018-06-07
• Subjects: Cucurbituril -- Polymerchemie -- Supramolekulare Chemie -- Supramolekulare Katalyse -- Wirt-Gast-Systeme; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201803749
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: 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. Abstract : Supramolekulare Katalyse : Eine auf supramolekularer Katalyse basierende Methode für die kovalente Polymerisation wird vorgestellt. Polyelektrolyte wurden mithilfe einer durch Cucurbit[8]uril unterstützten Photodimerisierung von Brooker‐Merocyanin‐Einheiten synthetisiert. Bereits 10 Mol‐% CB[8] reichen aus, um die Polymerisation zu katalysieren.