Document Type : Original Article
Authors
1 Institute for Nanoscience and Nanotechnology, Sharif University of Technology, Tehran, Iran
2 Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran
3 Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran
Abstract
Tm3+, Yb3+-codoped SrF2 nanoparticles were synthesized through a facile hydrothermal technique. Citrate ions were introduced as the capping agent into the reaction. Upconversion nanoparticles were characterized by field emission scanning electron microscopy (FESEM), Energy dispersive x-ray spectroscopy (EDS), x-ray diffraction (XRD), Dynamic light scattering (DLS), Zeta potential, Fourier transform Infrared spectroscopy (Ft-IR), and the 980 nm laser induced photoluminescence spectroscopy. Rare-earth ions (Na+), which are the cations of citrate salts, are incorporated into the structure to act as charge compensators. Upconversion emission in the visible and NIR region was observed by the 980 nm irradiation. Nanoparticles with a narrow size distribution and a uniform morphology were directly dispersible in water, forming a quite transparent suspension. Nanoparticles size was approximately 10 nm. High penetration of the Near-Infrared light into the body tissue makes these nanoparticles appropriate for tumor targeting in the deeper tissues for the purpose of bioimaging and photodynamic therapy.
Keywords
- X Chen, J Vanacken, Y Liu, L Meng, J Ge, J Hu, S. Wu, Z Zhong, and V V Moshchalkov, IEEE Journal of Selected Topics in Quantum Electronics 25 (2019) 1.
- D Kim, N Lee, Y I. Park, and T Hyeon, Bioconjugate Chemistry, 28 (2017) 12.
- K Lingeshwar Reddy, R Balaji, A. Kumar, and V. Krishnan, Small 14 (2018) 1801304.
- B Zhou, B Shi, D Jin, and X Liu, Nature Nanotechnology 10 (2015) 924.
- P Du, J H Lim, S H Kim, and J S Yu, Opt. Mater. Express 6 (2016) 1896.
- J C Goldschmidt and S Fischer, Advanced Optical Materials 3 (2015) 510.
- E A Grebenik, A B Kostyuk, and S M Deyev, Russian Chemical Reviews 85 (2016) 1277.
- M Misiak, M Skowicki, T Lipiński, A Kowalczyk, K. Prorok, S Arabasz, and A Bednarkiewicz, Nano Research 10 (2017) 3333.
- M K Tsang, C F Chan, K L Wong, and J Hao, Journal of Luminescence 157 (2015) 172.
10. X Wu, Y Zhang, K Takle, O Bilsel, Z Li, H Lee, Z Zhang, D Li, W Fan, C Duan, E M Chan, C Lois, Y Xiang, and G Han, ACS Nano 10 (2016) 1060.
11. N Kumam, N P Singh, L P Singh, and S K Srivastava, Nanoscale Research Letters 10 (2015) 347.
12. J Sun, J Xian, and H Du, Applied Surface Science, 257 (2011) 3592.
13. J Sun, J Xian, X Zhang, and H Du, Journal of Rare Earths 29 (2011) 32.
14. G Wang, Q Peng, and Y Li, Journal of the American Chemical Society 131 (2009) 14200.
15. B Xu, H He, Z Gu, S Jin, Y Ma, and T Zhai, The Journal of Physical Chemistry C 121 (2017) 18287.
16. R D Shannon and C T Prewitt, Acta Crystallographica Section B 26 (1970) 1046.
17. J K Lim, S A Majetich, and R D Tilton, Langmuir 25 (2009) 13384.
18. C Graf, Q Gao, I Schütz, C N Noufele, W Ruan, U Posselt, E Korotianskiy, D Nordmeyer, F Rancan, S Hadam, A Vogt, J Lademann, V Haucke, and E Rühl, Langmuir 28 (2012) 7598.
19. V. Muhr, S. Wilhelm, T. Hirsch, and O. S. Wolfbeis, Accounts of Chemical Research 47 (2014) 3481.
20. Y Bao, Q A N. Luu, C Lin, J M Schloss, P S May, and C Jiang, Journal of Materials Chemistry 20 (2010) 8356.
21. A Márquez-Herrera, M V Ovando-Medina, E B Castillo-Reyes, M Zapata-Torres, M Meléndez-Lira, and J González-Castañeda, Materials 9 (2016) 30.
- L M Bishop, J C Yeager, X Chen, J N Wheeler, M D Torelli, M C Benson, S D Burke, J A Pedersen, and R J Hamers, Langmuir 28 (2012) 1322.