Polymer-on-HOF: a New Strategy for Fabricating “Armour-Plated” HOFs to Sequester Radioactive Anions

The development of hydrogen-bonded organic frameworks (HOFs) faces significant constraints, primarily attributed to their fragile architectures and limited functionalization capabilities. To overcome these limitations, this work presents a new polymer-on-HOF strategy by covalently tethering armor-like polymers onto the surface of HOFs. The application of this approach not only bolsters the stability of HOFs, but also facilitates the customization of their functional expansion in radionuclide sequestration. The optimized HOF-polymer materials display extraordinary ability in radionuclide sequestration, achieving uptake of I− (0.699 g g−1), IO3− (0.285 g g−1) and ReO4− (1.616 g g−1, setting a world record), fast adsorption kinetics ( 100