Generic Postfunctionalization Route from Amino-Derived Metal−Organic Frameworks

摘要

The secondary building unit (SBU) approach for engineering ofnmetal-organic frameworks (MOFs) with tunable pore sizes is verynattractive for designing practical properties such as separation bynmolecular sieving and shape-selective catalysis.1 The conceptualnapproach used to increase the pore sizes of MOFs through the usenof longer ligands has also been extended to the design ofnmultifunctional MOFs bearing a functional group on the organicnmoiety. This is the case for IRMOF-3,2 MOF-101(-Br),3 and MIL-n53(Al)-NH2,4 to name a few. However, this extension is notnstraightforward in practice.5 Indeed, the chemistry of MOF networknformation is very sensitive to the chemical reactivity and solubilitynof the functionalized linkers.6 This is particularly the case fornfunctions such as -OH, -COOH, and N-donating groups, whichncan interfere with the coordination chemistry associated with thenassembly of the nodes.