Luminescence based on energy transfer in xerogels doped with Tb2-xEux(WO4)3

• Autorzy: Grobelna B.
• Języki publikacji: EN

Abstrakty

EN

A series of luminescent materials consisting of Tb2-xEux (WO4)3 entrapped in silica xerogel were successfully prepared. The parameter x in the formula changed from 0.4 to 2. Spectroscopic properties such as absorption and luminescence of optically active ions were studied at room temperature. Owing to the energy transfer from the WO42- groups (ligand-metal charge transfer, (LMCT)) the lanthanide ions show their characteristic emissions in Tb2-xEux(WO4)3 entrapped in silica xerogel, i.e., 5D0 › 7FJ (J = 0, 1, 2, 3, 4) transition for Eu3+ ion and 5D4 › 7FJ (J = 6, 5, 4, 3) transition for Tb3+ ion. The energy transfer is effective for the mixed tungstate salt Tb1.35Eu0.65(WO4)3 entrapped in silica xerogel. The Eu(III) emission intensity in the materials under study increases with an increase in the annealing temperature from 600 to 900 °C. This is due to the removal of the effective O -H quenchers from the coordination sphere of the Eu(III) ion.

Słowa kluczowe

EN

photoluminescence; lanthanide(III) ions; sol-gel method; energy transfer

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2008
• Tom: Vol. 38, nr 1
• Strony: 39--47
• Opis fizyczny: Bibliogr. 16 poz.

Twórcy

autor

Grobelna B.

• Faculty of Chemistry, University of Gdańsk, Sobieskiego 18/19, 80-952 Gdańsk, Poland,

Bibliografia

• [1] BŰNZLI J.-C.G., [In] Lanthanide Probes in Life, Chemical and Earths Sciences: Theory and Practice, Bűnzli J.-C.G., Choppin G.R. [Eds.], Elsevier, Amsterdam 1989 (Chapter 7).
• [2] AITASALO T., DEREŃ P., HÖLSÄ J., JUNGNER H., KRUPA J.-C., LASTUSAARI M., LEGENDZIEWICZ J., NIITTYKOSKI J., STRĘK W., Persistent luminescence phenomena in materials doped with rare earth ions, Journal of Solid State Chemistry 171(1–2), 2003, pp. 114–22.
• [3] SERRA O.A., CICILINI S.A., ISHIKI R.R., A new procedure to obtain Eu3+ doped oxide and oxosalt phosphors, Journal of Alloys and Compounds 303–304, 2000, pp. 316–9.
• [4] BLASSE G., GRABMAIER B.C., Luminescent Materials, Springer-Verlag, Heidelberg, 1994.
• [5] KODAIRA C.A., BRITO H.F., MALTA O.L., SERRA O.A., Luminescence and energy transfer of the europium(III) tungstate obtained via the Pechini method, Journal of Luminescence 101(1–2), 2003, pp. 11–21.
• [6] KŁONKOWSKI A.M., SZAŁKOWSKA I., LIS S., PIETRASZKIEWICZ M., HNATEJKO Z., Luminescent materialsconsisting of Eu(III) ions complexed with cryptand ligand and coligands entrapped in xerogel matrices, Journal of Luminescence 115(3–4), 2005, pp. 122–30.
• [7] PIRES A.M., DAVOLOS M.R., STUCCHI E.B., Eu3+ as a spectroscopic probe in phosphors based on spherical fine particle gadolinium compounds, International Journal of Inorganic Materials 3(7), 2001, pp. 785–90.
• [8] CHOPPIN G.R., PETERMAN D.R., Coordination Chemical Review 174, 1998, p. 183.
• [9] SUPKOWSKI R.M., HORROCKS W.DEW., On the determination of the number of water molecules, q, coordinationed to europium(III) ions in solution from luminescence decay lifetimes, Inorganica Chimica Acta 340, 2002, p. 44–8.
• [10] BRINKER C.J., SCHERER G.W., Sol–Gel Science. The Physics and Chemistry of Sol–Gel Processing, Academic Press, Boston 1990 (Chapter 13).
• [11] GROBELNA B., LIPOWSKA B., KŁONKOWSKI A.M., Energy transfer in calcium tungstate moped with Eu(III) or Tb(III) ions incorporated into silica xerogel, Journal of Alloys and Compounds 419(1–2), 2006, pp. 191–6.
• [12] GROBELNA B., Luminescence based on energy transfer in xerogels doped with Ln2–xTbx(WO4 )3, Journal of Alloys and Compounds 440(1–2), 2007, pp. 265–9.
• [13] KŁONKOWSKI A.M., GROBELNA B., WIDERNIK T., JANKOWSKA-FRYDEL A., MOZGAWA W., The coordination state of copper(II) complexes anchored and grafted onto the surface of organically modified silicates, Langmuir 15(18), 1999, pp. 5814–9.
• [14] KUBOTA S., IZUMI M., ŁAMANE H., SHIMADA M., Luminescence of Eu3+, Tb3+ and Tm3+ in SrLaGa3O7, Journal of Alloys and Compounds 283(1–2), 1999, pp. 95–101.
• [15] TISEANU C., FRUNZA L., KUMKE M., Time-resolved photoluminescence analysis of distribution and migration of terbium ions in zeolites X, Physica B 352(1–4), 2004, p. 358–65.
• [16] LEI B., LIU Y., LIU J., YE Z., SHI CH., Pink light emitting long-lasting phosphorescence In Sm3+-doped CdSiO3, Jornal of Solid State Chemistry 177(4–5), 2004, pp. 1333–7.