HfO2:Eu nanoparticles excited by X-rays and UV-visible radiation used in biological imaging
来源期刊：Journal of Rare Earths2019年第11期
论文作者：Jaroslaw Kaszewski Jaroslaw Olszewski Julita Rosowska Bartlomiej Witkowski Lukasz Wachnicki Karolina Wenelska Ewa Mijowska Zdzislaw Gajewski Marek Godlewski Michal M.Godlewski
文章页码：1176 - 1182
摘 要：Europium doped hafnium dioxide nanoparticles were crystallized using biologically friendly microwave hydrothermal method and employed in observation of small rodents tissues.Main solvent in synthesis is water,in consequence nanoparticles are found surrounded by thin hydroxide layer.Size of the nanoparticles is controlled by temperature of calcination.1200℃heating causes drop of luminescence intensity,explained as damage of high symmetry surface emission centers in the nanocrystals.On the other hand,growth of crystallites increases intensity of X-ray and electron beam excited luminescence.This makes them promising activator in photodynamic therapy.
Jaroslaw Kaszewski1，Jaroslaw Olszewski2,3，Julita Rosowska1，Bartlomiej Witkowski1，Lukasz Wachnicki1，Karolina Wenelska4，Ewa Mijowska4，Zdzislaw Gajewski2，Marek Godlewski1，Michal M.Godlewski2,3
1. Institute of Physics,Polish Academy of Sciences2. Veterinary Research Centre,Department of Large Animal Diseases with Clinic,Faculty of Veterinary Medicine,Warsaw University of Life Sciences-SGGW3. Department of Physiological Sciences,Faculty of Veterinary Medicine,Warsaw University of Life Sciences-SGGW4. Faculty of Chemical Technology and Engineering,West Pomeranian University of Technology in Szczecin
摘 要：Europium doped hafnium dioxide nanoparticles were crystallized using biologically friendly microwave hydrothermal method and employed in observation of small rodents tissues.Main solvent in synthesis is water,in consequence nanoparticles are found surrounded by thin hydroxide layer.Size of the nanoparticles is controlled by temperature of calcination.1200℃heating causes drop of luminescence intensity,explained as damage of high symmetry surface emission centers in the nanocrystals.On the other hand,growth of crystallites increases intensity of X-ray and electron beam excited luminescence.This makes them promising activator in photodynamic therapy.
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