Persistently Folded Circular Aromatic Amide Pentamers Containing Modularly Tunable Cation-Binding Cavities with High Ion Selectivity

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• 作者：Bo Qin ; Changliang Ren ; Ruijuan Ye ; Chang Sun ; Khalid Chiad ; Xiuying Chen ; Zhao Li ; Feng Xue ; Haibin Su ; Gregory A. Chass ; Huaqiang Zeng
• 刊名：Journal of the American Chemical Society
• 出版年：2010
• 出版时间：July 21, 2010
• 年：2010
• 卷：132
• 期：28
• 页码：9564-9566
• 全文大小：212K
• 年卷期：v.132,no.28(July 21, 2010)
• ISSN：1520-5126

文摘

In this work, we illustrated a novel design strategy that allows systematically tunable interior properties (effective cavity size, steric crowdedness, and hydrophobicity) contained within a novel class of shape-persistent aromatic pentamers to take place on a scale below 3 Å. Such finely tunable structural features are complimented by experimentally observable functional variations in ion-binding potential. Results of the selective, differential binding affinities of three circular pentamers for Li⁺, Na⁺, K⁺, Rb⁺, and Cs⁺, substantiated by metal-containing crystal structures and computational modeling, are detailed.