Concentration Insensitive Supramolecular Polymerization Enabled by Kinetically Interlocking Multiple-Units Strategy,CCS Chemistry

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Concentration Insensitive Supramolecular Polymerization Enabled by Kinetically Interlocking Multiple-Units Strategy
CCS Chemistry ( IF 9.4 ) Pub Date : 2019-08-01 , DOI: 10.31635/ccschem.019.20190009
Jiezhong Shi ₁ , Haoyang Jia ₁ , Hao Chen ₁ , Xi Wang ₂ , Jiang-Fei Xu ₁ , Weibin Ren ₃ , Jiang Zhao ₃ , Xin Zhou ₂ , Yuanchen Dong ₃ , Dongsheng Liu ₁

Affiliation

We proposed and demonstrated a kinetically interlocking multiple-units supramolecular polymerization strategy. Through rationally designed multiple-units monomers, the degree of polymerization (Xw) detected was more than 50 with a polydispersity index of ∥1.4. The prepared polymers were stable when diluted to 20 ┢M or lower concentrations. By introducing the cooperative effects of multiunit interactions into a traditional condensation polymerization model, we found that the relationship between the concentration and the Xw was heavily influenced by the unit number involved in the kinetic interlocking. Factors that influenced the Xw and their distributions were studied systematically, and all the results matched the theoretical predictions excellently. This strategy provides novel insight into supramolecular polymerization and offers a simple but effective way to improve positive correlation of the reversibility and stability of supramolecular interactions in polymer assembly.

中文翻译：

通过动力学连锁的多单元策略实现浓度不敏感的超分子聚合

我们提出并证明了动力学连锁的多单元超分子聚合策略。通过合理设计的多单元单体，检测到的聚合度（Xw）大于50，多分散指数为∥1.4。当稀释到20 µM或更低浓度时，制备的聚合物是稳定的。通过将多单元相互作用的协同效应引入传统的缩聚模型中，我们发现浓度和Xw之间的关系受到动力学连锁中涉及的单元数的严重影响。对影响Xw及其分布的因素进行了系统的研究，所有结果均与理论预测相符。

更新日期：2020-06-24

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