Mechanically robust, ion-conductive, self-healing glassy hybrid materials via tailored Zn/imidazole interaction
Mechanically robust, ion-conductive, self-healing glassy hybrid materials via tailored Zn/imidazole interaction
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DOI：
10.1016/j.mtchem.2021.100611
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发表时间：
2021-12
影响因子：
7.3
通讯作者：
Y. Sasaki;T. Yamamoto;H. Mori
中科院分区：
文献类型：
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作者：
Y. Sasaki;T. Yamamoto;H. Mori
由于缓慢的扩散动力学，在环境条件下同时实现机械性能和快速自修复具有挑战性。在这里，我们报告的自愈混合物的设计组成的低分子量的多功能倍半硅氧烷纳米粒子与非共价金属配体相互作用形成的交联网络，以解决这一挑战。通过改变抗衡离子和金属-配体进料比来仔细调整键动力学和强度，使得能够快速自修复和具有离子导电性的稳健机械性能（拉伸强度= 14.9 MPa，断裂伸长率= 4.36%）。杂化材料的静态拉伸行为和流变响应表现出动态交互作用。没有缠结的杂交体可以在室温下从物理切割愈合，愈合效率约为90%。这种分子设计策略为生产具有优异机械性能的自修复杂化材料提供了一条通用途径。
Simultaneously achieving mechanical properties and rapid self-healing under ambient conditions is challenging because of slow diffusion dynamics. Here, we report the design of self-healing hybrids composed of low molecular mass multifunctional silsesquioxane nanoparticles with cross-linked networks formed from non-covalent metal–ligand interactions to address this challenge. Carefully tuning the bond dynamics and strength by changing the counterions and metal–ligand feed ratio enables rapid self-healing and robust mechanical properties (tensile strength = 14.9 MPa and elongation at break = 4.36%) with ion conductivity. Static tensile behavior and rheological response of hybrids revealed dynamic interactions. The hybrids without entanglement can heal from a physical cut at room temperature with a healing efficiency of approximately 90%. This molecular design strategy provides a versatile pathway for the production of self-healing hybrid materials with excellent mechanical properties.