Polynuclear Molybdenum and Tungsten Complexes containing 3-Hydroxypicolinic Acid and Europium (III)

Novel polynuclear tungsten and molybdenum (VI) complexes with 3-hydroxypicolinic acid (HpicOH) and europium(III) [M4O12Eu(picOH)3] (M(VI) = W, Mo) were prepared by hydrothermal methods. The solid compounds were characterized by FT-IR and FT-Raman spectroscopy and elemental analysis. The photoluminescent properties of the materials were investigated, showing sensitization of the europium(III) luminescence by both the 3- hydroxypicolinate ligand and the polyoxometalate moiety

[1]  R. C. Howell,et al.  Synthesis of a cluster containing Eu(III) α2-P2W17O6110- and preliminary luminescence experiments , 2005 .

[2]  Yang-guang Li,et al.  A Novel Pillar-Layered Organic−Inorganic Hybrid Based on Lanthanide Polymer and Polyomolybdate Clusters: New Opportunity toward the Design and Synthesis of Porous Framework , 2005 .

[3]  T. Trindade,et al.  Preparation of photoluminescent monolayers based on a polyoxotungstoeuropate , 2004 .

[4]  J. Klinowski,et al.  Synthesis, characterization and crystal structure of a novel europium(III) supramolecular compound: {[Eu(CH3OH)6(H2O)2] [PMo12O40]}. (C14H20O5)2.(CH3OH)2.(CH3CN)2 , 2004 .

[5]  Jingping Wang,et al.  1D‐Polyoxometalate‐Based Composite Compounds − Design, Synthesis, Crystal Structures, and Properties of [{Ln(NMP)6}(PMo12O40)]n (Ln = La, Ce, Pr; NMP = N‐methyl‐2‐pyrrolidone) , 2004 .

[6]  T. Trindade,et al.  Lanthanopolyoxotungstoborates: synthesis, characterization, and layer-by-layer assembly of europium photoluminescent nanostructured films. , 2004, Journal of Nanoscience and Nanotechnology.

[7]  Rute A. S. Ferreira,et al.  Novel lanthanide luminescent materials based on complexes of 3-hydroxypicolinic acid and silica nanoparticles , 2003 .

[8]  M. T. Pope,et al.  Polyoxometalate chemistry : from topology via self-assembly to applications , 2002 .

[9]  M. Drew,et al.  Polynuclear molybdenum and tungsten complexes of 3-hydroxypicolinic acid and the crystal structures of (nBu4N)2[Mo4O12(picOH)2] and (nHex4N)2[Mo2O6(picOH)2] , 2001 .

[10]  P. Gómez‐Romero.  Hybrid Organic–Inorganic Materials—In Search of Synergic Activity , 2001 .

[11]  T. Yamase,et al.  X-Ray structural and photoluminescence spectroscopic investigation of the europium octamolybdate polymer Eu2(H2O)12[Mo8O27]·6H2O and intramolecular energy transfer in the crystalline lattice , 1991 .

[12]  Glen B. Deacon,et al.  Relationships between the carbon-oxygen stretching frequencies of carboxylato complexes and the type of carboxylate coordination , 1980 .