Synthesis and characterization of triphenylamine-containing microporous organic copolymers for carbon dioxide uptake

This article describes the synthesis and characterization of microporous organic copolymers (PP-N-x, where x is the molar percent of triphenylamine) prepared from triphenylamine and dichloro-p-xylene using a combination of oxidative polymerization and Friedel Crafts alkylation process promoted by anhydrous FeCl3. The samples possessed BET specific surface areas from 318 to 1530 m(2) g(-1) with the increasing content of dichloro-p-xylene. The highest CO2 uptake of 4.60 mmol g(-1) was observed for PP-N-25, which was one of the highest values among MOPs reported to date under these conditions. The polymers possessed stable and reversible CO2 adsorption-desorption performance in at least 5 consecutive runs without noticeable deterioration of CO2 uptake capacities. (C) 2013 Elsevier Ltd. All rights reserved.