Controllable Supramolecular Polymerization Promoted by Host-Enhanced Photodimerization

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• 作者：Yuetong Kang ; Zhengguo Cai ; Zehuan Huang ; Xiaoyan Tang ; Jiang-Fei Xu ; Xi Zhang
• 刊名：ACS Macro Letters
• 出版年：2016
• 出版时间：December 20, 2016
• 年：2016
• 卷：5
• 期：12
• 页码：1397-1401
• 全文大小：352K
• ISSN：2161-1653

文摘

In this letter, we report a new method of controllable supramolecular polymerization, taking advantage of host-enhanced photodimerization. The low-molecular-weight supramolecular oligomers were formed by noncovalent complexation between cucurbit[8]urils (CB[8]) and the bifunctional monomers (DBN) with Brooker’s merocyanine moiety (MOED) on either end. Interestingly, when irradiated with UV light, the supramolecular oligomers could transform into supramolecular polymers with high molecular weight. The molecular weight of supramolecular polymers could be controlled by varying the irradiation time. It is highly anticipated that this work can enrich the methods on the modulation of supramolecular polymerization.