“…Due to these characteristics, COFs have attracted significant interest from the scientific community . COFs are usually composed of C, N, O, B, and S connected by strong covalent bonds, e.g., C–N, CN, CC–N, B–O, etc. − They exhibit unique properties, including ordered channels, large specific surface area, highly tunable porosity, selectable building blocks, predictable structure, and abundant functional groups, making them excellent for sensing. , The large adhesion surface of COFs to gas molecules is due to their ordered network configuration and multiple active cavities during sensing . Furthermore, COFs are thermally and chemically stable due to the involvement of covalent bonds by generating a finite molecular space and interfaces for photons, excitons, electrons, holes, spins, ions, and molecular interactions.…”