Strong Aggregation and Directional Assembly of Aromatic Oligoamide Macrocycles
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- 作者：Yongan Yang ; Wen Feng ; Jinchuan Hu ; Shuliang Zou ; Rongzhao Gao ; Kazuhiro Yamato ; Mark Kline ; Zhonghou Cai ; Yi Gao ; Yibing Wang ; Yibao Li ; Yanlian Yang ; Lihua Yuan ; Xiao Cheng Zeng ; Bing Gong
- 刊名：Journal of the American Chemical Society
- 出版年：2011
- 出版时间：November 23, 2011
- 年：2011
- 卷：133
- 期：46
- 页码：18590-18593
- 全文大小：833K
- 年卷期：v.133,no.46(November 23, 2011)
- ISSN：1520-5126
文摘
Aromatic oligoamide macrocycles exhibit strong preference for highly directional association. Aggregation happens in both nonpolar and polar solvents but is weakened as solvent polarity increases. The strong, directional assembly is rationalized by the cooperative action of dipole鈥揹ipole and 蟺鈥撓€ stacking interactions, leading to long nanotubular assemblies that are confirmed by SEM, TEM, AFM, and XRD. The persistent nanotubular assemblies contain non-collapsible hydrophilic internal pores that mediate highly efficient ion transport observed with these macrocycles and serve as cylindrical sites for accommodating guests such as metal ions.