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Chinese Journal of Clinical Laboratory Management(Electronic Edition) ›› 2020, Vol. 08 ›› Issue (04): 228-232. doi: 10.3877/cma.j.issn.2095-5820.2020.04.009

Special Issue:

• Clinical Research • Previous Articles     Next Articles

Reactive functional groups decorate fluoride upconversion nanoparticles NaYF4: Yb, Er with silica coating

Xinqiang Xu1, Xuesong Li1, Tianxing Ji2, Meng Lei3, Qiang Zhou2,()   

  1. 1. Clinical Laboratory, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, GuangZhou 510405, China
    2. Clinical Laboratory, The Second Affiliated Hospital of Guangzhou Medical University, GuangZhou 510260, China
    3. Clinical Laboratory, Yichun People’s Hospital, Yichun Guangdong 336000, China
  • Received:2020-08-08 Online:2020-11-28 Published:2020-11-28
  • Contact: Qiang Zhou
  • About author:
    Corresponding author: Zhou Qiang, Email:

Abstract:

Objective

To modify the surface of nanoparticles for biological application.

Methods

NaYF4: Yb, Er nanoparticles were synthesized by thermal decomposition method, then a thin layer of SiO2 was coated on the surface of above nanoparticles by microemulsion method and epoxy group was also modified on the surface. In addition, the nanoparticles morphology, luminescence properties and surface properties were characterized by transmission electron microscopy (TEM), fluorescence spectroscopy and fourier infrared spectrum analyzer(FT-IR),respectively.

Results

Uniform-size and hexagonal-phase NaYF4: Yb, Er were synthesized by thermal decomposition method. Silica-coated NaYF4: Yb, Er nanoparticles still had strong luminescence properties, and nanoparticles could be further modified with epoxide group.

Conclusion

The fluoride upconversion nanoparticle with strong luminescence properties and stability after surface modification could be used as a new biological fluorescent marker in the biomedical field.

Key words: NaYF4:Yb, Er, Thermal decomposition method, Silica coated, Epoxy group

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