Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Science, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, P. R. China.
Chem Asian J. 2018 Oct 4;13(19):2818-2823. doi: 10.1002/asia.201800982. Epub 2018 Aug 16.
The development of artificial self-assembling systems with dynamic photo-regulation features in aqueous solutions has drawn great attention owing to the potential applications in fabricating elaborate biological materials. Here we demonstrate the fabrication of water-soluble cucurbit[8]uril (CB[8])-mediated supramolecular polymers by connecting the fluorinated azobenzene (FAB) containing monomers through host-enhanced heteroternary π-π stacking interactions. Benefiting from the unique visible-light-induced E→Z photoisomerization of the FAB photochromophores, the encapsulation behaviors between the CB[8] macrocycle and the monomers could be regulated upon visible light irradiation, resulting in the depolymerization of such CB[8]-mediated supramolecular polymers.
具有动态光调控特性的人工自组装体系在水溶液中的发展引起了人们的极大关注，因为它有可能用于制造精细的生物材料。在这里，我们通过连接含有氟化吖啶（FAB）的单体，展示了可溶于水的葫芦[8]脲（CB[8]）介导的超分子聚合物的制备，这些单体通过主体增强的杂三元π-π堆积相互作用连接在一起。受益于 FAB 光致变色体独特的可见光诱导 E→Z 光致异构化，在可见光照射下可以调节 CB[8]大环和单体之间的包封行为，从而导致这种 CB[8]介导的超分子聚合物的解聚。
