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Reconstruction of Covalent Organic Frameworks by Dynamic Equilibrium

机译：动态平衡重建共价有机骨架

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摘要

Covalent organic frameworks (COFs) are periodic two-or three-dimensional polymeric networks with high surface areas, low density, and designed structures. Because COFs are normally prepared based on reversible formation of covalent bonds with relatively weak stability, their structures can be easily broken or damaged due to changes in the surrounding environment. Thus, developing strategies to realize the reconstruction of COFs in order to extend their usage lifetime is crucial for practical applications. In addition, exploring the kinetics of COF growth under varied reaction conditions is important for better understanding the nucleation and growth processes of COFs. In this work, the reformation mechanism of an imine-based COF using an ex situ characterization method was investigated, disclosing an interesting COF reconstruction progress from disorder to order. The present study shows the regeneration ability of COFs, and the developed method could be generalized for broader use in the field.
机译：共价有机骨架（COF）是具有高表面积，低密度和设计结构的周期性二维或三维聚合物网络。因为COF通常是基于具有相对较弱稳定性的可共价键的可逆形成而制备的，所以它们的结构由于周围环境的变化而容易被破坏或破坏。因此，开发用于实现COF重构以延长其使用寿命的策略对于实际应用至关重要。另外，探索COF在不同反应条件下生长的动力学对于更好地理解COF的成核和生长过程也很重要。在这项工作中，使用异位表征方法研究了基于亚胺的COF的重整机理，揭示了从无序到有序的有趣的COF重建进展。本研究表明了COFs的再生能力，所开发的方法可以推广用于该领域。

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