Two novel indole-based porous organic polymers for effective iodine adsorption from organic and gaseous phases

Novel indole-based organic polymers (In-Mel-HCP and 2PhIn-POP) were synthesized for iodine capture from both organic and gaseous phases. Herein, the coupling of indole resin and melamine resin was successfully realized. Besides, the feasibility of constructing tertiary carbon center by ethanol and chloroform was demonstrated once again. In organic phase, the iodine adsorption property is promoted by both the large specific surface area and the high active adsorption site. In gaseous phase, the large average pore size facilitates the adsorption. Chemisorption mainly occurs in the original adsorption experiments for both phases, while physisorption is more significant during the cycling tests.