A 3D photoluminescent Eu( iii )-MOF sensor supported by a tetracarboxylate ligand for the sensitive and selective detection of Cd 2+ and o -nitrophenol

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A novel 3D luminescent metal–organic framework (MOF) denoted as [Eu(BTA) 0.5 (H 2 BTA) 0.5 (H 2 O)] n (Cj-2) has been constructed from a π-conjugated ligand with a tetracarboxylate group, 1,2,4,5-benzenetetracarboxylic acid (BTA), via solvothermal synthesis.