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808 nm激发的NaYF4:Yb/Tm/Ca@NaGdF4:Nd/Yb上转换纳米粒子的制备及其发光性质
Preparation and Luminescent Properties of NaYF4: Yb/Tm/Ca@NaGdF4: Nd/Yb Up-conversion Nanoparticles Excited at 808 nm
- 发光学报 2020年41卷第11期 页码：1358-1366
- 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：
[ "林少伟(1994-), 男, 河南驻马店人, 硕士研究生, 2018年于周口师范学院获得学士学位, 主要从事稀土上转换纳米发光材料方面的研究。E-mail:gllinsw@163.com" ]
[ "欧俊(1963-), 男, 广西桂林人, 博士, 研究员, 2007年于四川大学获得博士学位, 主要从事生物纳米医用功能材料等方面的研究。E-mail:gloujun@glut.edu.cn" ]
- 基金信息：广西重点科研项目(2016GXNSFDA380026)
DOI：10.37188/CJL.20200195
中图分类号： O482.31纸质出版日期：2020-11，
收稿日期：2020-7-7，
录用日期：2020-8-12
扫 描 看 全 文
林少伟, 赵婧, 法信蒙, 等. 808 nm激发的NaYF4:Yb/Tm/Ca@NaGdF4:Nd/Yb上转换纳米粒子的制备及其发光性质[J]. 发光学报, 2020,41(11):1358-1366.
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.
林少伟, 赵婧, 法信蒙, 等. 808 nm激发的NaYF4:Yb/Tm/Ca@NaGdF4:Nd/Yb上转换纳米粒子的制备及其发光性质[J]. 发光学报, 2020,41(11):1358-1366. DOI： 10.37188/CJL.20200195.
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
3+
敏化的掺杂Ca
2+
的NaYF
4
:Yb/Tm/Ca@NaGdF
4
:Nd/Yb核-壳上转换纳米粒子。针对Tm
3+
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
3+
、Yb
3+
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
2
)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
2
，在808 nm近红外光激发下，壳层中Nd
3+
和Yb
3+
的摩尔分数分别为50%和10%时表现出强烈的上转换蓝光(
1
D
2
→
3
F
4
，
1
G
4
→
3
H
6
)和紫外光(
1
I
6
→
3
F
4
，
1
D
2
→
3
H
6
)，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
3+
-sensitized Ca
2+
-doped NaYF
4
:Yb/Tm/Ca@NaGdF
4
:Nd/Yb core/shell upconversion nanoparticles were successfully prepared by solvothermal method. The effects of key factors such as the content of sensitizers Nd
3+
and Yb
3+
and the excitation power on the fluorescence performance were studied for the blue light and UV up-conversion emission generated in the Tm
3+
multi-photon process. To obtain up-converting nanoparticles with good hydrophilicity
the UCNPs surface was modified with mesoporous silica(mSiO
2
). 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
2
. Then
under the excitation of 808 nm near infrared light
when the mole fraction of Nd
3+
and Yb
3+
in the shell was 50% and 10% respectively
it shows strong up-conversion blue light(
1
D
2
→
3
F
4
1
G
4
→
3
H
6
) and ultraviolet light(
1
I
6
→
3
F
4
1
D
2
→
3
H
6
). The research will have potential application prospects in photodynamic therapy and fluorescence imaging.
关键词
Nd3+敏化多光子发射核壳结构二氧化硅
Keywords
Nd3+ sensitizationmultiphoton emissioncore-shell structuresilica
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