Preparation and Luminescent Properties of NaYF<sub>4</sub>: Yb/Tm/Ca@NaGdF<sub>4</sub>: Nd/Yb Up-conversion Nanoparticles Excited at 808 nm

Shao-wei LIN; Jing ZHAO; Xin-meng FA; Jun OU

doi:10.37188/CJL.20200195

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Preparation and Luminescent Properties of NaYF₄: Yb/Tm/Ca@NaGdF₄: Nd/Yb Up-conversion Nanoparticles Excited at 808 nm

Synthesis and Properties of Materials | 更新时间：2020-11-10

- Preparation and Luminescent Properties of NaYF₄: Yb/Tm/Ca@NaGdF₄: Nd/Yb Up-conversion Nanoparticles Excited at 808 nm
- Chinese Journal of Luminescence Vol. 41, Issue 11, Pages: 1358-1366(2020)
- 作者机构：
  
  桂林理工大学材料科学与工程学院, 广西有色金属及特色材料加工重点实验室, 广西桂林 541004
- 作者简介：
- 基金信息：
  
  Key Scientific Research Projects in Guangxi
- DOI：10.37188/CJL.20200195
  CLC： O482.31
- Received：07 July 2020，
  
  Accepted：12 August 2020，
  
  Published：2020-11
- 稿件说明：
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Shao-wei LIN, Jing ZHAO, Xin-meng FA, et al. Preparation and Luminescent Properties of NaYF₄: Yb/Tm/Ca@NaGdF₄: Nd/Yb Up-conversion Nanoparticles Excited at 808 nm[J]. Chinese journal of luminescence, 2020, 41(11): 1358-1366.
DOI：

Shao-wei LIN, Jing ZHAO, Xin-meng FA, et al. Preparation and Luminescent Properties of NaYF₄: Yb/Tm/Ca@NaGdF₄: Nd/Yb Up-conversion Nanoparticles Excited at 808 nm[J]. Chinese journal of luminescence, 2020, 41(11): 1358-1366. DOI： 10.37188/CJL.20200195.

摘要

采用溶剂热法成功制备了Nd

敏化的掺杂Ca

的NaYF

:Yb/Tm/Ca@NaGdF

:Nd/Yb核-壳上转换纳米粒子。针对Tm

多光子过程中产生的蓝色及紫外上转换发光，研究了敏化剂Nd

、Yb

的含量以及激发功率等关键因素对荧光性能的影响，并用介孔二氧化硅(mSiO

)对其表面进行修饰，得到具有良好亲水性的上转换纳米粒子，通过TEM、XRD、FT-IR和荧光光谱对其形貌、结构和荧光性能进行表征。结果表明，制备的纳米粒子为纯六角相，表面均匀地包覆了一层mSiO

，在808 nm近红外光激发下，壳层中Nd

和Yb

的摩尔分数分别为50%和10%时表现出强烈的上转换蓝光(

→

，

→

)和紫外光(

→

，

→

)，在光动力疗法和荧光成像方面具有潜在的应用价值。

Abstract

The Nd

-sensitized Ca

-doped NaYF

:Yb/Tm/Ca@NaGdF

:Nd/Yb core/shell upconversion nanoparticles were successfully prepared by solvothermal method. The effects of key factors such as the content of sensitizers Nd

and Yb

and the excitation power on the fluorescence performance were studied for the blue light and UV up-conversion emission generated in the Tm

multi-photon process. To obtain up-converting nanoparticles with good hydrophilicity

the UCNPs surface was modified with mesoporous silica(mSiO

). Its morphology

structure and fluorescence properties were characterized by TEM

XRD

FT-IR and fluorescence spectroscopy. The results showed that the prepared nanoparticles were pure hexagonal phase

the surface was evenly modified with a layer of mSiO

. Then

under the excitation of 808 nm near infrared light

when the mole fraction of Nd

and Yb

in the shell was 50% and 10% respectively

it shows strong up-conversion blue light(

→

) and ultraviolet light(

→

). The research will have potential application prospects in photodynamic therapy and fluorescence imaging.

关键词

Keywords

references

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Related Institution

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Preparation and Luminescent Properties of NaYF4: Yb/Tm/Ca@NaGdF4: Nd/Yb Up-conversion Nanoparticles Excited at 808 nm

DOI：10.37188/CJL.20200195

摘要

Abstract

关键词

Keywords

references

Preparation and Luminescent Properties of NaYF₄: Yb/Tm/Ca@NaGdF₄: Nd/Yb Up-conversion Nanoparticles Excited at 808 nm