Porous Hybrid Triazine-Functionalized Polymers with High Capture Ability for I₂ and Dyes

Porous hybrid polymers have a vast range of prospects in the field of environmental restoration because of their excellent comprehensive performances in recent years. Two types of porous silsesquioxane/triazine hybrid polymers (PCS-TPH-1, PCS-TPH and PCS-TSA-1, PCS-TSA) were prepared by the Friedel–Crafts reaction with different ratios of phenyl- or thiophene-substituted triazine monomers and octavinylsilsesquioxane (OVS). PCS-TPH and PCS-TSA with higher specific surface areas were selected to probe their adsorption capacities for dyes and iodine vapor. Relative to PCA-TSA, PCS-TPH with a large specific surface area and a high mesoporous ratio preferred to adsorb large-sized Congo Red (CR) and rhodamine (RB) with absorption capacities of 935 and 1180 mg g–1, respectively. Under the combined action of heteroatoms and specific surface areas, PCS-TPH and PCA-TSA showed a similar I2 adsorption amount of ∼2.4 g g–1. In addition, due to the effect of charge transfer, the resulting materials can specifically respond to I2 among many other different types of anions.