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Preliminary study on singlet oxygen production using CeF3:Tb3+@SiO2-PpIX
Institution:1. Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, B?ehová 7, Prague 115 19, Czech Republic;2. Institute of Physics of the AS CR, Cukrovarnická 10, Prague 162 53, Czech Republic;1. Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, B?ehová 7, 115 19 Praha 1, Czech Republic;2. Nuclear Research and Consultancy Group (NRG), Research & Innovation, Westerduinweg 3, 1755 LE Petten, The Netherlands;3. Nuclear Chemistry/Industrial Materials Recycling, Chalmers University of Technology, SE-412 96 Göteborg, Sweden;4. Department of Chemistry and Biotechnology, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden;1. Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama, Ikoma, Nara 630-0192, Japan;2. Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan;3. Department of Electrical and Computer Engineering, University of Saskatchewan, 57 Campus Dr., Saskatoon, SK S7N5A9, Canada;1. Institute of Physics, University of Tartu, 14c Ravila, 50411 Tartu, Estonia;2. A.M. Prokhorov General Physics Institute RAS, 38 Vavilov Str., 119991, Moscow, Russia;3. University of Science and Technology of China, Hefei, 230026, PR China;4. P. N. Lebedev Physical Institute, 53 Leninskiy Prospekt, 119991 Moscow, Russia;1. Taras Shevchenko National University of Kyiv, 64 Volodymyrska st., 01601 Kyiv, Ukraine;2. National University of Life and Environmental Sciences of Ukraine, 5 Geroiv Oborony st., 03041 Kyiv, Ukraine;3. Oleksandr Dovzhenko Hlukhiv National Pedagogical University, 24 Kyjevo-Moskovs''ka Street, 41400 Glukhiv, Ukraine;1. Department of Energy Engineering, National United University, Miaoli 36003, Taiwan;2. Department of Mechanical Engineering, National Chin-Yi University of Technology, Taichung 411, Taiwan;1. Department of Physics, Kohat University of Science and Technology, Kohat 26000, Pakistan;2. Department of Physics, Kyungpook National University, Daegu 702-701, Republic of Korea
Abstract:Luminescent properties and singlet oxygen production using CeF3:Tb3+-based nanoparticles modified with SiO2 and protoporphyrin IX (PpIX) were studied. CeF3:Tb3+ nanopowder was prepared via sol–gel route, with subsequent surface coating by SiO2 layer and the conjugation with photosensitive PpIX molecules. Radioluminescence spectra suggest an energy transfer from Ce3+ to Tb3+ ions and from Tb3+ to molecules of PpIX photosensitizer. The energy transfer was confirmed by photoluminescence decay curves. Singlet oxygen production was detected using a reaction of 1O2 with 3’-(p-aminophenyl) fluorescein (APF) chemical probe after X-Ray excitation. Qualitative changes in time resolved photoluminescence spectra in the region of 520 nm indicate 1O2 generation. Studied nanocomposites may be good candidates for the application in X-ray induced photodynamic therapy.
Keywords:Singlet oxygen  Cerium fluoride  Photodynamic therapy  Biofunctionalization  Scintillator
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