Oligophenylenevinylene (OPV) tetracarboxylate luminescent ligand 5 has been synthesizedand used for the design of a new Ni(II) layered organic−inorganic compound (8) obtainedby the reaction of 5 with nickel(II) nitrate hexahydrate. The hybrid compound 8 has beencharacterized by powder X-ray diffraction and its magnetic and luminescent properties havebeen investigated as a function of temperature. The structure consists of the stacking offerromagnetic Ni(II) based layers at ca. 29 Å apart. A ferromagnetic 3D order occurs at TC= 9.5 K. The study of the temperature dependence of the luminescent properties of the OPV-based hybrid compound shows that the π electron sub-system is influenced by the magneticordering of the Ni(II) sub-network.
The new layered organic−inorganic compound Ni(OPV(COO)4)0.45(OH)0.2·2.6H2O represents a rare example of a magnetoluminescent system exhibiting a synergy between the optical and magnetic properties.