化学
无定形固体
膜
溶剂
分子
亚胺
笼子
乙腈
聚合物
离子键合
智能材料
化学工程
纳米技术
有机化学
材料科学
催化作用
离子
生物化学
数学
组合数学
工程类
作者
Qiu‐Hong Zhu,Guo‐Hao Zhang,Lei Zhang,Shuanglong Wang,Jie Fu,Yuan-Hao Wang,Lijian Ma,Ling He,Guo‐Hong Tao
摘要
Adaptive bionic self-correcting behavior offers an attractive property for chemical systems. Here, based on the dynamic feature of imine formation, we propose a solvent-responsive strategy for smart switching between an amorphous ionic polyimine membrane and a crystalline organic molecule cage without the addition of other building blocks. To adapt to solvent environmental constraints, the aldehyde and amine components undergo self-correction to form a polymer network or a molecular cage. Studies have shown that the amorphous film can be switched in acetonitrile to generate a discrete cage with bright birefringence under polarized light. Conversely, the membrane from the cage crystal conversion can be regained in ethanol. Such a membrane–cage interconversion can be cycled continuously at least 5 times by switching the two solvents. This work builds a bridge between the polymer network and crystalline molecules and offers prospects for smart dynamic materials.
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