Review ArticleRecent advances in the synthesis of covalent organic frameworks for CO2 capture

- Synthesis of COFs as potential porous solid adsorbent for CO2 capture.
- Imine-based and triazine-based COFs show higher CO2 uptake than boron-based COFs.
- Introduction of extra tool into COFs enhances their crystallinity, porosity and stability.
- MC-COFs have combined features stability, porosity and crystallinity.

As a novel class of porous crystalline organic materials assembled from molecular building blocks, the synthetic strategies of covalent organic frameworks (COFs) allow for the design and construction of new crystalline materials since their properties can easily be tuned through appropriate selection of the building blocks and the linkage motif. Their fascinating and versatile properties have made them to emerge as a platform for functional explorations and applications in CO2 capture. This review article addresses the synthetic strategies with special emphasis on dynamic covalent chemistry and potential application of COFs for CO2 capture. Recent advancements in the synthesis of COFs, including the strategies and principles involved are discussed. Also discussed are strategies of introducing extra tools in COFs to enhance their crystallininty, porosity and chemical stability, which are important parameters in the applications of COFs for post-combustion capture of CO2 in the CCS technology.