Synthesis, structure and luminescence property of Eu(III) metal–organic framework based on 2,2′-bipyridine-5,5′-dicarboxylic acid

A novel trivalent europium, Eu(III), 2,2′-bipyridine-5,5′-dicarboxylic acid (bpdc) metal–organic framework, namely, [Eu4(bpdc)6(CH3NH2)3(DMSO)(H2O)] 1 was synthesized by the solvothermal reaction of bpdc with trivalent Eu(III) salts in a mixed solvent system containing N,N′-dimethylformamide (DMF) and dimethyl sulfoxide (DMSO). The single X-ray diffraction indicated that complex 1 had a novel porous three-dimensional framework with two different binuclear metal units. The photoluminescence spectrum of the complex displayed strong emission maxima at 472 and 618 nm.