Sinawang Garry, Osaki Motofumi, Takashima Yoshinori, Yamaguchi Hiroyasu, Harada Akira
Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
Chem Commun (Camb). 2020 Apr 25;56(32):4381-4395. doi: 10.1039/d0cc00672f. Epub 2020 Apr 6.
The introduction of non-covalent bonds is effective for achieving self-healing properties because they can be controlled reversibly. One approach to introduce these bonds into supramolecular materials is use of host-guest interactions. This feature article summarizes the development of supramolecular materials constructed by non-covalent cross-linking through several approaches, such as host-guest interactions between host polymers and guest polymers, 1 : 2-type host-guest interactions, and host-guest interactions from the polymerization of host-guest inclusion complexes. Host-guest interactions show self-healing functions while also enabling stimuli-responsiveness (redox, pH, and temperature). The self-healing function of supramolecular materials is achieved by stress dispersion arising from host-guest interactions when stress is applied. Reversible bonds based on host-guest interactions have tremendous potential to expand the variety of functional materials.
引入非共价键对于实现自修复性能是有效的，因为它们可以被可逆地控制。将这些键引入超分子材料的一种方法是利用主客体相互作用。这篇专题文章总结了通过几种方法由非共价交联构建的超分子材料的发展，例如主体聚合物与客体聚合物之间的主客体相互作用、1:2型主客体相互作用以及主客体包合物聚合产生的主客体相互作用。主客体相互作用具有自修复功能，同时还能实现刺激响应性（氧化还原、pH值和温度）。当施加应力时，超分子材料的自修复功能是通过主客体相互作用产生的应力分散来实现的。基于主客体相互作用的可逆键在扩展功能材料种类方面具有巨大潜力。
