کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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606178 | 1454520 | 2016 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A facile one-pot method to synthesize ultrasmall core-shell superparamagnetic and upconversion nanoparticles A facile one-pot method to synthesize ultrasmall core-shell superparamagnetic and upconversion nanoparticles](/preview/png/606178.png)
Ultrasmall core-shell Fe3O4@NaYF4:Yb3+/Er3+ nanoparticles with bifunctional properties have been successfully synthesized via one pot thermolysis method using oleylamine as both solvent and stabilizer. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), upconversion (UC) luminescence spectra and the physical properties measurement system (PPMS) were used to characterize the resulting samples. The synthesized samples have uniform morphology with a mean size of 14.5 nm and excellent dispersibility. Moreover, these nanoparticles exhibit superparamagnetic behaviour with saturation magnetization of 8.45 emμ/g and efficient up-conversion emission with a two-photon induced process when excited by a 980 nm laser. These results suggest that the synthesized ultrasmall bifunctional nanoparticles may find many biomedical applications, such as clinical diagnosis and treatment of cancers.
Ultrasmall core-shell Fe3O4@NaYF4:Yb3+/Er3+ nanostructure particles with bifunctional properties have been successfully synthesized via one pot thermolysis method using oleylamine as both solvent and stabilizer.Figure optionsDownload high-quality image (80 K)Download as PowerPoint slide
Journal: Journal of Colloid and Interface Science - Volume 475, 1 August 2016, Pages 1–7