Porous materials are useful in applications such as catalysis, adsorption, storage, and purification. Beside the well-know inorganic examples, such as porous metal oxides and zeolites, new materials of entirely organic composition line up to extend the range of properties and applications of this class of materials. In particular, there has been much research in the areas of micro- and mesoporous polymers and covalent organic frameworks. [1] Organic polymer networks, in particular, offer control broad over composition as a result of the wide range of chemistry which is available. [1a,b, 2] However, porous polymer networks have some limitations: they can swell in solvents (e.g., hypercrosslinked networks[1d] ), but they cannot dissolve and are not solution processable. It is hence interesting to synthesize discrete, three-dimensional molecules or supramolecular aggregates which combine inherent porosity with the processability and modularity associated with discrete molecules. [3]
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