Chemistry and Physics Faculty Proceedings, Presentations, Speeches, Lectures


Zeolites embrace metal-organic frameworks: building block approach to the design and synthesis of zeolite-like metal-organic frameworks (ZMOFs)

Event Name/Location

15th International Zeolite Conference / Beijing, China

Document Type

Conference Proceeding

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Our research group has recently developed a novel approach to the design and synthesis of metal-organic assemblies (MOAs), e.g. metal-organic frameworks and metal-organic polyhedra, which has permitted the construction of anionic zeolite-likemetal-organic frameworks (ZMOFs), i.e. rho-ZMOF and sod-ZMOF, serving to merge two important classes of porous functional materials, namely zeolites and metal-organic frameworks (MOFs). Though the use of tetrahedral divalent single-metal ions (M2+) and simple angular monovalent ligands (L) may lead to MOFs with zeolite-like topologies, the resultant frameworks will be neutral and preclude the use of cationic structure-directing agents (SDAs) and limit the diversity of structures constructed from the same metal ion M(II) and ligand (L). Our design strategy involves targeting rigid and directional single-metal-ion-based molecular building blocks (MBBs), namely MNx+y(CO2)x+z(containing x N-, O- chelates, y additional N-moieties, and z bridging carboxylates at the remaining open metal sites), where M is a 6- or 8-coordinate metal and the multi-valent, multifunctional ligand is judiciously selected depending on the target structure. The focus of the approach has been to render each hetero-coordinated (N-, O-) single-metal ion, formed in situ, rigid and directional using the N-, O-chelating moieties. For the formation of anionic ZMOFs, an angular ligand (L2-) is utilized where the M-N bonds direct the topology, while the oxygen atoms complete the coordination sphere of the metal and lock it into its position through the formation of rigid five-membered rings via chelation. Our strategy allows for the use of cationic SDAs and thus offers great potential to access the diverse library of known zeolite topologies, including theoretical ones.


Found in: Studies in Surface Science and Catalysis Volume 170, Pages 2021-2029

Conference Proceeding Title

From Zeolites to Porous MOF Materials - The 40th Anniversary of International Zeolite Conference







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