S
Sónia S. Nobre
Researcher at University of Aveiro
Publications - 19
Citations - 657
Sónia S. Nobre is an academic researcher from University of Aveiro. The author has contributed to research in topics: Photoluminescence & Lanthanide. The author has an hindex of 12, co-authored 19 publications receiving 631 citations. Previous affiliations of Sónia S. Nobre include Centre national de la recherche scientifique & École Normale Supérieure.
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Journal ArticleDOI
A theoretical interpretation of the abnormal 5D0→7F4 intensity based on the Eu3+ local coordination in the Na9[EuW10O36]·14H2O polyoxometalate
R. A. Sá Ferreira,Sónia S. Nobre,Carlos M. Granadeiro,Helena I. S. Nogueira,Luís D. Carlos,Oscar L. Malta +5 more
TL;DR: In this article, the Na9[EuW10O36]·14H2O polyoxometalate studied here has shown a peculiar 4f-4f emission spectrum that has two main differences in comparison to data reported previously in the literature: a 5D0→7F0 line with much smaller intensity and an abnormally high intensity of the 5D 0→ 7F4 transition.
Journal ArticleDOI
Energy Transfer Mechanisms in Organic−Inorganic Hybrids Incorporating Europium(III): A Quantitative Assessment by Light Emission Spectroscopy
Patrícia P. Lima,Sónia S. Nobre,Ricardo O. Freire,Severino A. Junior,Rute A. S. Ferreira,Uwe Pischel,Oscar L. Malta,Luís D. Carlos +7 more
TL;DR: In this paper, quantitative aspects of energy transfer occurring in sol−gel derived organic−inorganic diureasil hybrids incorporating either [Eu(btfa)3(4,4‘-bpy)(EtOH)] (btfa = benzoyltrifluoroacetonate, 4,4'bpy = 4, 4'-bipyridine) or Eu(CF3SO3)3.
Journal ArticleDOI
Energy Transfer and Emission Quantum Yields of Organic−Inorganic Hybrids Lacking Metal Activator Centers
Sónia S. Nobre,Patrícia P. Lima,Luís Mafra,Rute A. S. Ferreira,Ricardo O. Freire,Lianshe Fu,Uwe Pischel,Verónica de Zea Bermudez,and Oscar L. Malta,Luís D. Carlos +9 more
TL;DR: In this article, the authors discussed quantitatively the energy transfer mechanism that occurs in the white-light emission of sol−gel derived amine-and amide-functionalized hybrids, and two model compounds were synthesized and characterized by X-ray diffraction, 29Si/1H/13C magic-angle spinning NMR, diffuse reflectance, Fourier transform−IR, and photoluminescence spectroscopy.
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Photoluminescence of Eu(III)-doped lamellar bridged silsesquioxanes self-templated through a hydrogen bonding array
Sónia S. Nobre,Sónia S. Nobre,Carlos D. S. Brites,Rute A. S. Ferreira,Verónica de Zea Bermudez,Carole Carcel,Joël J. E. Moreau,João Rocha,Michel Wong Chi Man,Luís D. Carlos +9 more
TL;DR: In this paper, three photoluminescent lamellar Eu3+-doped silsesquioxane hybrids incorporating 1.01, 1.83 and 15.04% EuCl3 were prepared and fully characterized.
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Optical studies of ZnO nanocrystals doped with Eu3+ ions
Marco Peres,A. Cruz,Sérgio Pereira,Maria R. Correia,M.J. Soares,A.J. Neves,M. C. Carmo,Teresa Monteiro,Angela S. Pereira,Maymone Martins,Tito Trindade,Eduardo Alves,Sónia S. Nobre,R. A. Sá Ferreira +13 more
TL;DR: In this paper, a trap level at ∼200 meV below the conduction band was assigned to the intrinsic defect of Eu3+ ion accommodation in synthetic ZnO nanocrystals.