Hierarchical pore assembly

Porous materials have rapidly gained attention in applications ranging from energy storage to selective separations. Hydrogen-bonded organic frameworks (HOFs) are a type of porous molecular solid constructed by weak non-covalent interactions, granting unique properties that set them apart from activated carbons and extended frameworks; however, they are mainly limited to microporosity. Now, writing in Angewandte Chemie, Antonio Fernandez and co-workers have synthesized hierarchical HOFs, integrating micropores and macropores into single crystals with controllable size through the self-assembly of tripyridine.

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