Orthogonal dynamic covalent self-assembly is used as a facile method for constructing polymer hollow nanocapsules (NCs) and thin films. The bifunctional precursor 4-formylphenylboronic acid is symmetrically installed with a boronic acid group for the boroxine linkage, and an aldehyde group for the Schiff base reaction which can react with twofold symmetry linkers ethylenediamine and para phenylenediamine to attain polymer NCs and nanosheets. Owing to the reversibility of the imine linkages, the mutual morphological transformation between polymer NCs and thin films via an amine-imine-exchange strategy is successfully achieved. Multiple reversible covalent bonds allow the control the release of the load in polymer NCs using different techniques. This may be useful for designing stimulus-responsive smart materials.

中文翻译：

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亚胺-环硼氧烷杂化聚合物纳米胶囊的正交动态共价自组装与薄膜之间通过接头交换的形态转化。

正交动态共价自组装用作构建聚合物空心纳米胶囊（NCs）和薄膜的简便方法。双功能前体4-甲酰基苯基硼酸被对称地安装，硼酸基团用于环硼氧烷键，醛基团用于席夫碱反应，该席夫碱反应可与对称对称的两个接头乙二胺和对苯二胺反应以得到聚合物NCs和纳米片。由于亚胺键的可逆性，通过胺-亚胺交换策略成功实现了聚合物NC和薄膜之间的相互形态转变。多个可逆共价键允许使用不同技术控制聚合物NC中负载的释放。这对于设计刺激响应型智能材料可能很有用。