Study structural and up-conversion luminescence properties of polyvinyl alcohol/CaF2:erbium nanofibers for potential medical applications

Nakhaei, Omolfajr and Shahtahmassebi, Nasser (2015) Study structural and up-conversion luminescence properties of polyvinyl alcohol/CaF2:erbium nanofibers for potential medical applications. Nanomedicine Journal, 2 (2). pp. 160-166.

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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.

Item Type: Article
Subjects: QT physiology
Divisions: Journals > Nanomedicine Journal
Depositing User: nmj nmj
Date Deposited: 26 Sep 2017 15:59
Last Modified: 26 Sep 2017 15:59
URI: http://eprints.mums.ac.ir/id/eprint/4737

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