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Effects of Polarization of Radiofrequency Radiation in Polycrystalline ESR
V. E. Fainzilberg
Department of Chemistry, Long Island University, USA
Redispersable Nanopowders for Wet Chemical Coatings Processes: Application to Transparent Conducting Coatings
N. Al-Dahoudi, M.A. Aegerter
Institut fuer Neue Materialien gem. GmbH - INM
Department of Coating Technology, Saarbruecken, Germany
Luminescent Materials, Recognition Phases of The Chemical Sensors and Heterogeneous Catalysts Prepared By Sol-Gel Method
Andrzej M. Kłonkowski
Faculty of Chemistry, University of Gdańsk, Poland
Spectroscopic Studies on the Inclusion Complexes of Tetrakis(2-hidroxy-5-nitrophenyl)porphyrin with α-Cyclodextrin in Solution and in Sol-Gel Matrix
A. O. Ribeiro, C. R. Neri, Y. Iamamoto and O. A. Serra
Rare Earth/Bioinorganic Laboratory - Chemistry Department - FFCLRP
University of São Paulo, Brasil
Comparison of Sol-Gel and Solid State Prepared Eu2+ Doped Calcium Aluminates
Tuomas Aitasalo1,2, Jorma Hölsä1,3, Högne Jungner 4, Mika Lastusaari1,2, Janne Niittykoski1,2
1University of Turku, Department of Chemistry, Finland
2Graduate School of Materials Research, Turku, Finland
3ENSCP, CNRS, Laboratoire de Chimie Appliquée de l'Etat Solide, Paris, France
4University of Helsinki, Dating Laboratory, Finland
Abstract
The Eu2+ doped calcium aluminate (CaAl2O4:Eu2+) was prepared by the sol-gel method. The structure and luminescence of the title compound were studied and compared to the corresponding properties of the materials prepared by the conventional solid state reaction. The use of the sol-gel method in preparation lowered the reaction threshold temperature by ca. 200°C. An unusual hexagonal form of CaAl2O4:Eu2+, which can not be prepared by the solid state reaction, was obtained by the sol-gel method. The UV excited luminescence and afterglow bands of the hexagonal CaAl2O4:Eu2+ were observed at a slightly longer wavelength than that of the normal monoclinic phase due to small differences in the crystal field effect on the splitting of the excited 4f65d1 configuration of the Eu2+ ion. The afterglow lifetime of the hexagonal phase was slightly longer than that of the monoclinic one due to deeper traps.
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Download article (PDF)Highly Porous Aerogels with Very Low Permability
J. Phalippou, T. Woignier, R. Sempéré, Ph. Dieudonné
Laboratoire des Verres - UMR CNRS 5587, Université de Montpellier, France
The Study of Thermal Disordering of The KSc(WO4)2 Crystal Structure by Raman Spectroscopy
M. M±czka, J. Hanuza, N. Sidorov and S. Kojima
Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Wrocław, Poland
The Electrochemical Redox Reactions in Solvated Silica Sol-Gel Glass
Marcin Opallo
Institute of Physical Chemistry, Polish Academy of Sciences, Warszawa, Poland
Structure, Spectroscopy and Dielectric Properties of BaTiO3:Eu3+ Nanocrystallites Prepared by The Sol-Gel Method
D. Hreniaka, E. Łukowiaka, K. Maruszewskia,b, R. P±zikc, and W. Stręka
aInstitute for Low Temperature and Structure Research, Polish Academy of Sciences, Wrocław, Poland
bMechanical Faculty, Institute of Materials Science and Applied Mechanics,Wrocław University of Technology, Poland
cChemistry Department, Opole University, Poland
Optical Behavior of Sol-Gel Derived Photonic Structures Formed by Submicron Silica Spheres
M. Jasiorski1, K. Maruszewski1,2 and W. Stręk1
1Institute for Low Temperature and Structure Research, Polish Academy of Sciences, Wrocław, Poland
2Mechanical Faculty, Institute of Materials Science and Applied Mechanics,Wrocław University of Technology, Poland
Lu2O3:Eu, a New X-ray Phosphor
E. Zych*, D. Hreniak and W. Strek
*Faculty of Chemistry, University of Wrocław, Poland
Institute for Low Temperature and Structure Research Polish Academy of Sciences, Wrocław, Poland
Review of Luminescence and Magnetic Properties of Antiferromagnetic KMnCl3, RbMnCl3, TlMnCl3 and (CnH2n+1NH3)2MnCl4 (n = 1, 2)
Małgorzata Pawłowska, Walter Wojciechowski
Institute of Inorganic Chemistry and Metallurgy of Rare Elements,
Wrocław University of Technology, Wrocław, Poland
Photochromic Hybrid Sol-Gel Coatings: Preparation, Properties, and Applications
A. Klukowska1, U. Posset1, G. Schottner1, M. L. Wis2,
C. Salemi-Delvaux 2, V. Malatesta2
1 Fraunhofer-Institut Silicatforschung (ISC), Würzburg, Germany
2 Great Lakes Chemical Corporation, San Donato Milanese, Italy
Opportunities for Sol-Gel Materials in Fuel Cells
Lisa C. Klein
Rutgers-the State University of New Jersey, Ceramic & Materials Engineering, NJ, USA
