Rationally integrating desired functional components into a composite material can endow the tailored function to achieve the corresponding purpose. This is the first case where a series of [AeImBr] X% -TAPT-COFs (X = 0, 17,33,50, 67, 83, 100) were fabricated by chemically integrating the amino-functionalized imidazole ionic liquid (NH 2 -IL) onto channel walls of mesoporous covalent organic framework materials ([HO] X% -TAPT-COFs). By virtue of the polar groups (amino groups) and abundant imidazole cations of NH 2 -IL and its microporous nature, the obtained [AeImBr] X% -TAPT-COFs exhibit higher CO 2 capture activity than [HO] X% -TAPT-COFs. Correspondingly, the CO 2 equilibrium capture capacity increases from 62.6 to 117.4 mg/g, which is crucial to the storage of enough CO 2 around the catalytic active sites. Additionally, the synergistic effect of −NH 2 and Br − in NH 2 -IL can also improve the cycloaddition reaction rate. The characteristics of [AeImBr] X% -TAPT-COFs contribute to the efficient generation of cyclic carbonate through heterogeneously catalyzing CO 2 -epoxide cycloaddition without any solvents and cocatalysts. Specifically, [AeImBr] 83% -TAPT-COF has a CO 2 equilibrium capture capacity of 117.4 mg/g and cyclochloroallyl carbonate yield of 99.1%. As a result of the use of the chemical grafting method, [AeImBr] X% -TAPT-COFs possess excellent stability and cycle life. The equilibrium capture capacity and cyclochloroallyl carbonate yield reach 112.7 mg CO 2 /g adsorbent and 95.0% at the eighth cycle.

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