Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA.
Chem Commun (Camb). 2019 Feb 26;55(18):2680-2683. doi: 10.1039/c8cc08957d.
β-Ketoenamine-linked covalent organic frameworks (COFs) offer excellent structural versatility and outstanding aqueous stability, but their stability complicates obtaining samples with high crystallinity and surface areas. In contrast, imine-linked COFs are often isolated with superior materials quality. Here we synthesize several β-ketoenamine-linked COFs, including two unreported structures, with unmatched crystallinity and high surface areas by preparing the corresponding imine-linked COF and exchanging its triformylbenzene monomers with triformylphloroglucinol.
β-酮亚胺键联共价有机框架（COFs）提供了极好的结构多样性和卓越的水稳定性，但它们的稳定性使得获得具有高结晶度和高表面积的样品变得复杂。相比之下，亚胺键联 COFs 通常具有更优异的材料质量。在这里，我们通过制备相应的亚胺键联 COF 并将其三醛基苯单体与三醛基间苯三酚交换，合成了几种β-酮亚胺键联 COFs，包括两个未报道的结构，具有无与伦比的结晶度和高表面积。
