A macroporous polyHIPE was used as a monolithic support to grow crystals of the metal-organic framework Cu3(btc)2 (btc = benzene-1,3,5-tricarboxylate) directly within the open-cell structure. Due to the creation of a microporous structure within a macroporous substrate, a material with a lung-like porous structure is obtained (see picture: SEM micrograph of Cu3(btc)2 crystals in polyHIPE).
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Schwab et al. (2008) studied this question.
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