A novel near monochromatic red emissive europium(III) metal-organic framework based on 1,2,4,5-benzenetetracarboxylate: From synthesis to photoluminescence studies

A new metal-organic framework (MOF), [Eu2(Btec)1,5(H2O)]n(Btec4−=1,2,4,5-benzenetetracarboxylate anion) were synthesized and fully characterized. Single crystal X-ray diffraction analysis reveals two crystallographically independent Eu(III) ions with different coordination geometries, culminating into an unknown coordination mode for the Btec4- ligand. The thermal dependence on the intensity of the transitions originating from the 7F1 level opens the possibility to test this MOF in the field of molecular thermometry.302