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Preliminary study on singlet oxygen production using CeF.sub.3./sub.:Tb.sup.3+./sup.@SiO.sub.2./sub.-PpIX.
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SYSNO ASEP 0470068 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Preliminary study on singlet oxygen production using CeF3:Tb3+@SiO2-PpIX. Author(s) Popovich, K. (CZ)
Procházková, L. (CZ)
Pelikánová, I.T. (CZ)
Vlk, M. (CZ)
Palkovský, M. (CZ)
Jarý, Vítězslav (FZU-D) RID, ORCID
Nikl, Martin (FZU-D) RID, ORCID, SAI
Múčka, V. (CZ)
Mihóková, Eva (FZU-D) RID, ORCID, SAI
Čuba, V. (CZ)Source Title Radiation Measurements. - : Elsevier - ISSN 1350-4487
Roč. 90, Jul (2016), s. 325-328Number of pages 4 s. Action International Conference on Luminescent Detectors and Transformers of Ionizing Radiation (LUMDETR) Event date 20.09.2015 - 25.09.2015 VEvent location Tartu (Estonsko) Country EE - Estonia Event type WRD Language eng - English Country GB - United Kingdom Keywords singlet oxygen ; cerium fluoride ; photodynamic therapy ; biofunctionalization ; scintillator Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects GA13-09876S GA ČR - Czech Science Foundation (CSF) GA13-28721S GA ČR - Czech Science Foundation (CSF) Institutional support FZU-D - RVO:68378271 UT WOS 000378470500071 EID SCOPUS 84957086872 DOI https://doi.org/10.1016/j.radmeas.2016.01.033 Annotation Luminescent properties and singlet oxygen production using with SiO2 and protoporphyrin IX (PpIX) were studied. CeF3:Tb3þ 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.
Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2017
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