Ionic covalent organic polymers (iCOPs) have gained substantial traction due to their efficacy in CO2 capture and other applications. Currently, iCOPs are synthesized either by using ionic monomers or post-modification of COP. Here, we report on a one-pot synthetic pathway to prepare iCOP via Menshutkin reaction using 1,4-Diazabicyclo [2.2.2]octane (DABCO) and 1,3,5-Tris(bromomethyl)benzene (TBMB) as neutral and low-cost monomers. The synthesized materials were collected as a powder with 88% of yield. Herein, first, the adsorption of CO2 in as-synthesized iCOP was evaluated. To study the effect of synthetic parameters on CO2 sorption in iCOF, we adjusted reaction conditions, including reactant concentration and solvents. Additionally, the counterions were exchanged to investigate the effect of the chemical environment of pores on CO2 sorption within these materials. The effect of these parameters on the structural parameters of iCOP and its sorption capacity was examined. The as-synthesized iCOP demonstrated CO2 adsorption of 0.34 mmole g-1 at 1 bar and 273K. We attribute the CO2 adsorption of iCOP to the porous structure and dipole-quadrupole interactions of CO2 and iCOP backbone.

One-pot synthesis of ionic covalent organic polymers via menshutkin reaction

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