Efficient Capture of Volatile Iodine by Thiophene-Containing Porous Organic Polymers
Wanjun Du, Yuancheng Qin, Cailing Ni, Weili Dai, Jian‐Ping Zou
Abstract
The adsorption of iodine by porous organic polymers is an active research topic. Here, we synthesized three porous organic polymers, TTDP-1, TTDP-2, and TTDP-3, to study the adsorption of iodine. A suitable configuration for iodine adsorption was identified by flexibly adjusting the stacking degree of aldehyde monomers to change the porosity of the porous organic polymer. The adsorption power of TTDP-1, TTDP-2, and TTDP-3 to iodine can reach 536, 470, and 425 wt %, respectively. All exhibit good adsorption capacity. By studying the thermogravimetric and infrared spectra of the TTDP-X material before and after iodine adsorption, we proved that iodine can form a charge transfer complex between the aromatic skeleton connected by the imine bond. This combination can increase iodine adsorption.