Dippold Veit, Vogl Sarah, Grüneberg Julia, Thomas Arne
Department of Chemistry/Functional Materials, Technische Universität Berlin, 10623, Berlin, Germany.
Macromol Rapid Commun. 2023 Jun;44(11):e2300046. doi: 10.1002/marc.202300046. Epub 2023 Apr 25.
Post-synthetic linker exchange performed on covalent organic frameworks (COFs) has become an important method to introduce functional building blocks into their backbone and thus to tune their chemical and physical properties. However, the linker exchange method has so far only been described for COFs with relatively weak linkages like imines. Herein, it is shown that this method can be also used for a post-synthetic linker exchange reaction on a β-ketoenamine linked COF. The time needed to achieve considerable linker exchange is much prolonged compared to other COFs with less stable linkages, however, this enables to achieve very good control on the ratio of the respective building blocks within the framework.
在共价有机框架（COF）上进行的合成后连接体交换已成为一种将功能性结构单元引入其主链从而调节其化学和物理性质的重要方法。然而，到目前为止，连接体交换方法仅针对具有相对较弱连接键（如亚胺）的COF进行了描述。在此表明，该方法也可用于β-酮烯胺连接的COF上的合成后连接体交换反应。与其他连接键稳定性较低的COF相比，实现可观连接体交换所需的时间要长得多，然而，这能够对框架内各个结构单元的比例实现非常好的控制。
