title: Lanthanopolyoxotungstoborates: synthesis, characterization, and layer-by-layer assembly of europium photoluminescent nanostructured films.
abstract: New lanthanopolyoxotungstoborates, K6-xHx[Ln(BW11O39)(H2O)3].nH2O, Ln(III) = Sm, Eu, Tb, Er, were prepared and characterized by spectroscopic methods (Fourier transform infrared, Fourier transform-Raman, 11B solid-state nuclear magnetic resonance, and photoluminescence) and elemental analysis. A layer-by-layer assembly method was employed to fabricate multilayered films containing the europium heteropolyanion and the polyelectrolytes poly(sodium 4-styrenesulfonate) and poly(diallydimethylammonium chloride). The photoluminescence behavior of these final nanostructures was investigated and compared with that of the starting Eu(III) polyoxometalate used as the building unit.
authors.affiliation: Department of Chemistry, University of Aveiro, CICECO, 3810-193 Aveiro, Portugal.
authors.forename: Filipa L
authors.initials: FL
authors.lastname: Sousa
authors.forename: Anabela C
authors.initials: AC
authors.lastname: Ferreira
authors.forename: Rute Sá A
authors.initials: RS
authors.lastname: Ferreira
authors.forename: Ana M
authors.initials: AM
authors.lastname: Cavaleiro
authors.forename: Luís D
authors.initials: LD
authors.lastname: Carlos
authors.forename: Helena I
authors.initials: HI
authors.lastname: Nogueira
authors.forename: João
authors.initials: J
authors.lastname: Rocha
authors.forename: Tito
authors.initials: T
authors.lastname: Trindade
mesh_terms: D000327:Adsorption; D003460:Crystallization / Q000379:methods*; D005063:Europium / Q000737:chemistry; D028581:Lanthanoid Series Elements / Q000138:chemical synthesis / Q000737:chemistry*; D049449:Luminescence; D008422:Materials Testing; D008567:Membranes, Artificial; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D013499:Surface Properties
chemical_list: D028581:Lanthanoid Series Elements; D008567:Membranes, Artificial; D005063:Europium