Influences of Co-doping Metal Ions on Luminescent Properties of (Eu,Tb) Rare Earth Complexes

WANG Peng; WEI Chang-ping; REN Xiao-ming

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Influences of Co-doping Metal Ions on Luminescent Properties of (Eu,Tb) Rare Earth Complexes

paper | 更新时间：2020-08-12

- Influences of Co-doping Metal Ions on Luminescent Properties of (Eu,Tb) Rare Earth Complexes
- Chinese Journal of Luminescence Vol. 30, Issue 1, Pages: 97-100(2009)
- 作者机构：
  
  长春理工大学材料科学与工程学院,吉林长春,130022
- 作者简介：
- 基金信息：
- DOI：
  CLC： O614.3;O482.31
- Received：30 September 2008，
  
  Revised：02 January 1900，
  
  Published Online：20 February 2009，
  
  Published：20 February 2009
- 稿件说明：
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WANG Peng, WEI Chang-ping, REN Xiao-ming. Influences of Co-doping Metal Ions on Luminescent Properties of (Eu,Tb) Rare Earth Complexes[J]. Chinese journal of luminescence, 2009, 30(1): 97-100.
DOI：

WANG Peng, WEI Chang-ping, REN Xiao-ming. Influences of Co-doping Metal Ions on Luminescent Properties of (Eu,Tb) Rare Earth Complexes[J]. Chinese journal of luminescence, 2009, 30(1): 97-100. DOI：

摘要

合成了以柠檬酸为第一配体、1

10-菲咯啉为第二配体的单核稀土(Eu、Tb)配合物和Tb/Y、Eu/Y按不同比例混合的掺杂稀土配合物。采用红外光谱、紫外光谱、激发和发射光谱等对合成的配合物结构和荧光性能进行了表征。红外光谱表明稀土离子与第一、第二配体进行了配位

配合物的紫外吸收主要是配体的吸收

保持了π→π

电子跃迁的特征。激发和发射光谱表明

不发光稀土离子Y

的掺入能显著增强发光稀土离子的光发射强度。

Abstract

In my paper

the rare earth (Eu

Tb) complexes were synthesized with citric acid as the first ligand and 1

10-phenanthroline (phen) as the secondary ligand

ternary rare earth complexes with a series of different ratios of Eu/Y and Tb/Y were synthesized. The complexes synthesized were characterized by IR spectra

UV spectra and emission-excitation spectra. IR spectra and elemental analysis show that composition and structure of the complexes synthesized is the same as the data in accordance with a chemical formula

the rare earth ions coordinated with the ligands

and the complexes is the target product. From the IR spectrum it can be seen

the C—O bond(1 729 cm-1) of citric acid symmetric stretching vibration

C—O bond (1 217 cm-1) symmetric stretching and O—H hydrogenous bond formation of hydroxyl plane bending vibration (945 cm-1) disappeared after the formation of complexes. The absorption of the ligand (phen) resulted in the complexe’s absorption which holded the character of π→π* transition with the formation of the ligand (phen) having little effect on the transition. Y3+ does not produce fluorescence itself

but the fluorescence intensity of the europium(Ⅲ) complexes increased with yttrium(Ⅲ) doped. The energy of ligand triplet state was transfered to yttrium(Ⅲ) difficultly because of the high excitation energy and f0 structure of yttrium(Ⅲ)

so that europium(Ⅲ) can get more energy

and its fluorescence intensity increased

which is so-called the co-luminescence.

关键词

Keywords

references

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Related Institution

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