Covalent Organic Frameworks Constructed from Flexible Building Blocks with High Adsorption Capacity for Pollutants

Two imine-based two-dimensional covalent organic frameworks (2D COFs: TPT-Azine-COF and TPT-TAPB-COF) which exhibit large surface areas and good crystallinity were synthesized from flexible building blocks. Both of them exhibit a prominent adsorption capacity for Rhodamine B (970 mg g–1) and volatile iodine (225 wt %) with good recyclability.