Instituto de Nanociencia de Aragón , Universidad de Zaragoza , 50018 Zaragoza , Spain.
Departamento de Química Orgánica, Facultad de Ciencias, Instituto de Ciencia de Materiales de Aragón , CSIC-Universidad de Zaragoza , 50018 Zaragoza , Spain.
J Am Chem Soc. 2019 Sep 11;141(36):14021-14025. doi: 10.1021/jacs.9b07506. Epub 2019 Aug 28.
The binding of imidazolium salts to cucurbit[8]uril, CB[8], triggers a stepwise self-assembly process with semiflexible polymer chains and crystalline nanostructures as early- and late-stage species, respectively. In such a process, which involves the crystallization of the host-guest complexes, the guest plays a critical role in directing self-assembly toward desirable morphologies. These include platelet-like aggregates and two-dimensional (2D) fibers, which, moreover, exhibit viscoelastic and lyotropic properties. Our observations provide a deeper understanding of the self-assembly of CB[8] complexes, with fundamental implications in the design of functional 2D systems and crystalline materials.
咪唑盐与瓜环（CB[8]）的结合引发了一个逐步的自组装过程，其中半柔性聚合物链和结晶纳米结构分别作为早期和晚期物种。在这个涉及主体-客体配合物结晶的过程中，客体在引导自组装成所需的形态方面起着关键作用。这些形态包括板状聚集体和二维（2D）纤维，它们还表现出粘弹性和溶致液晶性质。我们的观察提供了对 CB[8]配合物自组装的更深入理解，对设计功能性 2D 系统和结晶材料具有重要意义。
