Abstract
utilizing cubic NaYF4 nanoparticles as cores,we synthesized hydrophobic core-shell α-NaYF4/ β-Na Lu F4∶ 20% Yb,1% Tm upconversion nanoparticles under a mild solvothermal condition.The core-shell nanoparticles were characterized by X-ray diffraction,transmission electron microscopy,Fourier transform infrared spectrometer and fluorescence spectrometer. The measurement results showed that α-Na YF4 cores were about 10-15 nm,and average size of α-NaYF4/ β-Na Lu F4∶ 20% Yb,1% Tm upconversion nanoparticles was about 20 nm. Both the core and core-shell nanoparticles possessed narrow size distributions. The core-shell nanoparticles showed stronger luminescence intensity than those of cubic NaLuF4∶ 20% Yb,1% Tm with similar size. The detection results showed that this kind of hydrophobic core-shell α-Na YF4/ β-NaLuF4∶ 20% Yb,1% Tm nanoparticle has a higher potential value in biomedical applications.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
