PEI/CeF<SUB>3</SUB> : Tb<SUP>3+</SUP>纳米晶体的简易合成及荧光特性

丁 耘; 喻 了; 喻学锋

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PEI/CeF₃ : Tb³⁺纳米晶体的简易合成及荧光特性

论文 | 更新时间：2020-08-12

- PEI/CeF₃ : Tb³⁺纳米晶体的简易合成及荧光特性
- Facile Synthesis and Fluorescent Properties of PEI/CeF₃ : Tb³⁺ Nanocomposite Particles
- 发光学报 2009年30卷第4期页码：477-481
- 作者机构：
  
  武汉大学物理科学与技术学院,湖北武汉,430072
- 作者简介：
- 基金信息：
- DOI：
  中图分类号： O482.31
- 纸质出版日期：2009-8-30，
  
  网络出版日期：2009-8-30，
  
  收稿日期：2008-9-15，
  
  修回日期：1900-1-2，
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丁耘, 喻了, 喻学锋. PEI/CeF₃ : Tb³⁺纳米晶体的简易合成及荧光特性[J]. 发光学报, 2009,30(4):477-481.

DING Yun, YU Liao, YU Xue-feng. Facile Synthesis and Fluorescent Properties of PEI/CeF₃ : Tb³⁺ Nanocomposite Particles[J]. Chinese Journal of Luminescence, 2009,30(4):477-481.
丁耘, 喻了, 喻学锋. PEI/CeF₃ : Tb³⁺纳米晶体的简易合成及荧光特性[J]. 发光学报, 2009,30(4):477-481. DOI：

DING Yun, YU Liao, YU Xue-feng. Facile Synthesis and Fluorescent Properties of PEI/CeF₃ : Tb³⁺ Nanocomposite Particles[J]. Chinese Journal of Luminescence, 2009,30(4):477-481. DOI：

摘要

用水热法制备了PEI/CeF

: Tb

纳米晶体

运用透射电子显微镜

X射线衍射

傅立叶变换近红外光谱

对样品进行了表征。结果表明:所得纳米晶体平均粒径为10 nm

呈比较规则的立方体形;纳米晶体表面包覆有PEI

因而具有较好的水溶性和潜在的生物应用价值。我们给出了该纳米晶体的荧光激发谱与发射谱

详细说明了各发光峰对应能级的跃迁及其发光机理

分析了不同掺杂浓度对其荧光强度的影响。结果表明:所制备的纳米晶体在紫外光激发下

显示出明亮的绿色荧光。当Tb

离子掺杂摩尔分数20%左右时

样品的荧光强度达到最大值。

Abstract

Recently

lanthanide-based nanocrystals have showed great potential to be used as luminescent materials

considering their attractive optical and chemical features such as low toxicity

large effective Stokes shift and photochemical degradation. In this paper

we developed a simple method to prepare PEI coated CeF

: Tb

nanocomposites in aqueous solution. The samples were characterized by transmission electron microscopy (TEM)

X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectra. The results show that all the prepared nanocrystals are hexagonal shaped with an average size at around 10 nm and can also be used for covalently bonding to biomolecules.The products exhibit excellent green fluorescence under UV excitation. Further

the photoluminescence intensity is increased with the increasing doping concentration of the Tb

and reached a maximum at approximately 20%.

关键词

CeTb稀土荧光

Keywords

CeTbrare earthfluorescence

references

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PEI/CeF3 : Tb3+纳米晶体的简易合成及荧光特性

Facile Synthesis and Fluorescent Properties of PEI/CeF3 : Tb3+ Nanocomposite Particles

DOI：

摘要

Abstract

关键词

Keywords

references

PEI/CeF₃ : Tb³⁺纳米晶体的简易合成及荧光特性

Facile Synthesis and Fluorescent Properties of PEI/CeF₃ : Tb³⁺ Nanocomposite Particles