LAUSR

Two-dimensional (2D) porous polymers have demonstrated great potential in gas capture and surface catalysis as well as energy storage and conversion. Current synthesis of 2D porous polymers strongly depend on the usage of templates or additional exfoliation process. The resultant products have uncontrollable morphology and structure, low structure integrity, and relatively low yield. Herein, a facile and high throughput solvent-induced polymerization strategy to prepare ultrathin free-standing 2D porous hypercrosslinked polymer nanosheets with large surface area and high sulfur content by crosslinking steric hexakis(benzylthio)benzene and thiophene is reported. Using this approach, the morphologies (nanosheets and nanotubes) and specific surface areas (658-1150 m2 g-1) of porous hypercrosslinked polymers can be simply tailored by adjusting the crosslinking degree between monomers. The as-synthesized porous hypercrosslinked polymer nanotubes exhibit promising iodine capture performance, including a superior iodine uptake capacity (~270 wt%) and a rapid equilibrium adsorption (within 60 min). This method will pave a new avenue for the synthesis of advanced 2D porous polymers for various applications.