Recently, covalent organic frameworks (COFs) as an important class of porous frameworks have been employed in analytical applications owing to their significant inherent properties such as a high specific surface area with modifiable pore size and a robust nature that leads to great stabilities. Also, COFs are flexible in design to deliberate changes in their physical or chemical properties by generating functionalized COFs or COF-based composites. Here, we summarize some important categories of COFs from the point of view of their design and synthetic strategies. Subsequently, the synergistic combination aspects of COFs with other materials such as different types of magnetic, metal/metal oxide nanoparticles, silica, carbon nanomaterials, polymers, polyoxometalates (POMs), metal-organic frameworks (MOFs), and COFs are reviewed. Finally, the recent applications of COFs as efficient sorbents in analytical sample preparation methods including solid-phase extraction (SPE), dispersive solid-phase extraction (dSPE), magnetic solid-phase extraction (MSPE), and solid-phase microextraction (SPME) will be surveyed with emphasis on important factors that lead to increase extraction efficiency. In addition, challenges and obstacles in these approaches are discussed with perspective highlights.

最近，共价有机骨架（COFs）作为一类重要的多孔骨架，由于其显着的固有特性，例如高比表面积和可改变的孔径以及导致良好稳定性的稳健性质，已被用于分析应用。此外，COF 在设计上很灵活，可以通过生成功能化的 COF 或基于 COF 的复合材料来考虑其物理或化学性质的变化。在这里，我们从设计和合成策略的角度总结了一些重要的 COF 类别。随后，综述了 COF 与其他材料的协同组合方面，例如不同类型的磁性、金属/金属氧化物纳米粒子、二氧化硅、碳纳米材料、聚合物、多金属氧酸盐 (POM)、金属有机框架 (MOF) 和 COF。最后，COF 作为高效吸附剂在分析样品制备方法中的最新应用，包括固相萃取 (SPE)、分散固相萃取 (dSPE)、磁性固相萃取 (MSPE) 和固相微萃取 (SPME)调查重点是导致提高提取效率的重要因素。此外，还讨论了这些方法中的挑战和障碍，并附有观点亮点。