AbstractsChemistry

The object of this thesis is to explore functionalized linear dicarboxylate ligands for constructing luminescent metal-organic framework (MOF) sensors. The first series of ligands developed is based on functionalized (E)-4,4'-(ethene-1,2-diyl)dibenzoic acids. Luminescent MOFs have been synthesized from these ligands and their porosity, thermal stability, luminescent properties have been discussed. The second series of ligands is based on functionalized [1,1':4',1''-terphenyl]-4,4''-dicarboxylic acid. Ligands bearing methyl, methoxyl, thioether, aldehyde, ketone, quaternary ammonium side chains have been synthesized and constructed into luminescent MOFs. Their structures, thermal stability, luminescent properties, solvent-dependent luminescence and the underlying mechanisms have been discussed. Vapor sensing experiments have been conducted with MOFs bearing ether and thioether side chains and strong luminescence turn-on is triggered by certain solvents. The MOF with ether side chains has been further tested as sensor slides to evaluate its response rate and recyclability.