The
metal organic framework (MOF) UiO-66, which incorporates Zr6O8 nodes, exhibits high stability under a wide
range of conditions that commends it for potential applications. The
MOF properties can be tuned by the choice of the groups bonded to
the node defect sites and to the linkers. We report data for UiO-66
incorporating formate, acetate, benzoate, and trifluoroacetate on
the nodes and −NH2, −OH, −NO2, and phenyl substituents on the benzene rings of the benzene-1,4-dicarboxylic
acid-derived linkers. The MOFs were characterized by IR and 1H NMR spectroscopies, thermal gravimetric analysis, N2 adsorption, X-ray diffraction crystallography, scanning and transmission
electron microscopy, and electronic structure calculations. The ligands
on the nodes were identified and quantified by 1H NMR spectra
of the MOFs digested in NaOH/D2O solutions. The effects
of the node and linker groups on the electronic properties of the
nodes have been quantified with IR spectra of the node μ3-OH groups and by density functional theory calculations,
which are in good agreement with one another.
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