Selective and active transportation of guest molecules in sliding-host gel

我们用化学修饰的环糊精作为稀疏聚轮烷上的滑动主体分子。通过在溶液中化学交联改性聚轮烷，我们得到了一种新型的滑动凝胶，命名为滑动宿主凝胶，并对滑动宿主的包合性质进行了估计。然后，通过滑动主体凝胶中两种客体的交换，实现了客体分子的主动传输。通过客体分子的光异构化，我们发现了聚轮烷与滑动主体和滑动客体的可逆凝胶化。

We chemically modified cyclodextrins as sliding host molecules on the sparse polyrotaxane. By chemically cross-linking the modified polyrotaxane in the solution, we realized new sliding gels named "sliding-host gel", and estimated the inclusion properties of the sliding-host. Then, we realized active transportation of guest molecules using exchange of two kinds of guests in sliding-host gel. We found reversible gelation of polyrotaxane with sliding hosts and sliding guests by photoisomerization of the guest molecules.