Lanthanopolyoxotungstoborates: synthesis, characterization, and layer-by-layer assembly of europium photoluminescent nanostructured films.
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.
Sousa
Filipa L
FL
Department of Chemistry, University of Aveiro, CICECO, 3810-193 Aveiro, Portugal.
Ferreira
Anabela C
AC
Ferreira
Rute Sá A
RS
Cavaleiro
Ana M
AM
Carlos
Luís D
LD
Nogueira
Helena I
HI
Rocha
João
J
Trindade
Tito
T
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
D028581:Lanthanoid Series Elements; D008567:Membranes, Artificial; D005063:Europium