Post‐Synthetic Modification of Tagged Metal–Organic Frameworks

Playing tag with MOFs: Zinc metal–organic frameworks with pendant aldehyde and methoxy groups are prepared. The aldehyde-tagged MOF takes up 2,4-dinitrophenylhydrazine, reacting to form a hydrazone-functionalized MOF which is crystallographically characterized. Use of both aldehyde- and methoxy-functionalized dicarboxylates leads to MOFs containing both ligands, of which the aldehyde groups can be selectively reacted.