Zou Hua, Liu Jing, Li Ying, Li Xiaoyan, Wang Xia
School of Materials Science and Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai, 200093, China.
Small. 2018 Nov;14(46):e1802234. doi: 10.1002/smll.201802234. Epub 2018 Aug 31.
Cucurbit[8]uril (CB[8]) is unique and notable in the cucurbit[n]uril family, since it has a relatively large cavity and thus is able to simultaneously accommodate two guest molecules. Typically, an electron-deficient first guest and an electron-rich second guest can be bound by CB[8] to form a stable 1:1:1 heteroternary supramolecular complex. Additionally, two homo guests can also be strongly dimerized inside the cavity of CB[8] to form a 2:1 homoternary supramolecular complex. During the past decade, by combining polymer science and CB[8] host-guest chemistry, a variety of systems have been established to construct supramolecular polymers with polymer chains typically at the nanoscale/sub-microscale, and CB[8]-based micro/nanostructured polymer materials in the form of polymer networks and hydrogels, microcapsules, micelles, vesicles, and colloidal particles, normally in solution and occasionally on surfaces. This Review summarizes the noncovalent interactions and strategies used for the preparation of CB[8]-based polymers and polymer materials with a focus on the representative and latest developments, followed by a brief discussion of their characterization, properties, and applications.
葫芦[8]脲（CB[8]）在葫芦[n]脲家族中独一无二且引人注目，因为它具有相对较大的空腔，因此能够同时容纳两个客体分子。通常，缺电子的第一客体和富电子的第二客体可以被CB[8]结合，形成稳定的1:1:1异质三元超分子复合物。此外，两个同型客体也可以在CB[8]的空腔内强烈二聚化，形成2:1同型三元超分子复合物。在过去十年中，通过将高分子科学与CB[8]主客体化学相结合，已经建立了多种体系来构建超分子聚合物，聚合物链通常处于纳米级/亚微米级，以及以聚合物网络和水凝胶、微胶囊、胶束、囊泡和胶体颗粒形式存在的基于CB[8]的微/纳米结构聚合物材料，通常在溶液中，偶尔也在表面。本综述总结了用于制备基于CB[8]的聚合物和聚合物材料的非共价相互作用和策略，重点关注代表性和最新进展，随后简要讨论了它们的表征、性质和应用。
