它们通过动态亚胺化学以及低成本和有前途的环境压力干燥以构建单层动态共价聚合物气凝剂（DCPA），提出了直接的单锅，轻度和无催化剂的多面性敏感策略。
源自氨基和醛基的凝结的亚胺键能够用强骨架赋予湿凝胶能力。结合强骨架和高的交联密度，可以通过简单的环境压力干燥方法将湿凝胶转化为无严重收缩的气凝胶。
The lightweight DCPAs possess excellent mechanical properties, such as flexibility, elasticity, processability, etc. Intriguingly, the DCPAs are able to be degraded into soluble monomers and/or dispersible oligomer due to the transimination reactions of imine bonds. Furthermore, the new DCPAs can be generated by adjusting the molar ratio between amino groups and aldehyde groups, thereby realizing the goal of closed-loop recyclability relating to degradation-regeneration-degradation. The DCPAs are also reparable and weldable based on the dynamic properties and ambient pressure drying method, which are fire-new features for aerogels.
This work not only presents a novel class of aerogels and exhibits multifunctionality in various fields including adsorption and thermal insulation, but also provides new research perspective to facilitate the development of both dynamic covalent chemistry and aerogels for applications as smart and environmentally friendly materials.
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