Lanthanide (Ln) based materials are good candidates for potential applications in spintronics, catalysis and luminescence sensing due to their unique magnetic, electronic and photoluminescent properties arising from their 4fn configurations. When lanthanide ions are incorporated into extended organic-inorganic hybrid structures such as metal-organic frameworks (MOFs), the interactions between the organic and inorganic components can give rise to unprecedented and advantageous properties. However, due to the unpredictable coordination chemistry of Ln3+ ions, there are significant challenges in the crystal engineering of function-specific lanthanide metal-organic frameworks. The ability to judiciously direct the self-assembly of these materials towards targeted applications would be invaluable. Herein, we present the syntheses and structures of several novel lanthanide containing MOFs from linear aromatic dicarboxylate ligands including 2-hydroxyterephthalic acid, 4,4’-biphenyl dicarboxylic acid, 5,5’-bipyridine dicarboxylic acid, and 2,6-napthalene dicarboxylic acid. The photoluminescent properties of the Eu3+ and Tb3+ complexes with these ligands are discussed and their potential to sense environmental pollutants including nitroaromatics explosives and heavy metals is presented. This contribution advances the understanding of structure-function relationships in lanthanide MOFs for the rational design of functional materials and highlights the potential of these materials to sense environmental pollutants.

New lanthanide containing metal-organic frameworks from linear aromatic dicarboxylate ligands: Syntheses, structures and luminescence sensing capabilities

2019 Spring National Meeting

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