Study structural and up-conversion luminescence properties of polyvinyl alcohol/CaF2:erbium nanofibers for potential medical applications
Publish place: Nanomedicine Journal، Vol: 2، Issue: 2
Publish Year: 1394
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_NAMJ-2-2_008
تاریخ نمایه سازی: 18 تیر 1398
Abstract:
Objective(s): This paper describes synthesisPolyvinyl Alcohol/CaF2:Er nanofibers because of its photoluminescence properties.Materials and Methods: First, CaF2:Er nanocomposite synthesized with co-precipitation method. In order to prepare polyvinyl alcohol (PVA)/CaF2:Er nanofibers, CaF2:Er nanocomposites were added to the polyvinyl alcohol (PVA) polymer. PVA/CaF2:Er composite nanofibers were successfully prepared by electrospinning technique. Results: X-Ray Diffraction (XRD) pattern and Transmission Electron Microscopy (TEM) images indicate that the CaF2:Er nanocomposite was formed with cubic phase and the average crystalline size was calculated using the Scherrer s equation is about 26-28 nm. Scanning Electron Microscopy (SEM) images show that the diameters of the fine nanofibers are in the range of 60-110 nm. For studying luminescence properties of the nanofibers, the samples excited with different wavelengths and show excellent Up-Conversion luminescence transition. Conclusion: Photoluminescence spectrums of the PVA/CaF2:Er nanofibers illustrate up-conversion luminescence process. This unique property can have high potential for laser application and bio-imaging in medical technology.
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Authors
Omolfajr Nakhaei
Department of Physics, Ferdowsi University of Mashhad, Mashhad, Iran | Faculty of Science, Nanotechnology Research Center, Ferdowsi University, Mashhad, Iran
Nasser Shahtahmassebi
Department of Physics, Ferdowsi University of Mashhad, Mashhad, Iran | Faculty of Science, Nanotechnology Research Center, Ferdowsi University, Mashhad, Iran
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