Development of Single Molecular White Light Material Based on Rare Earth Europium Complexes

Xiao-lin ZHANG; Si-yang MA; Chun-lan LU

doi:10.37188/CJL.20210246

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Development of Single Molecular White Light Material Based on Rare Earth Europium Complexes

Synthesis and Properties of Materials | 更新时间：2021-11-23

- Development of Single Molecular White Light Material Based on Rare Earth Europium Complexes
  增强出版
- Chinese Journal of Luminescence Vol. 42, Issue 11, Pages: 1781-1786(2021)
- 作者机构：
  
  大连大学　环境与化学工程学院，辽宁　大连　116622
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(51902038);Innovation Training Program of Dalian University(202111258320)
- DOI：10.37188/CJL.20210246
  CLC： O69
- Published：01 November 2021，
  
  Received：21 July 2021，
  
  Revised：04 August 2021，
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Xiao-lin ZHANG, Si-yang MA, Chun-lan LU. Development of Single Molecular White Light Material Based on Rare Earth Europium Complexes. [J]. Chinese Journal of Luminescence 42(11):1781-1786(2021)
DOI：

Xiao-lin ZHANG, Si-yang MA, Chun-lan LU. Development of Single Molecular White Light Material Based on Rare Earth Europium Complexes. [J]. Chinese Journal of Luminescence 42(11):1781-1786(2021) DOI： 10.37188/CJL.20210246.

摘要

将光性能优异的红光材料稀土铕配合物引入到蓝光材料香豆素衍生物中开发了一种新型的单分子白光材料CRP4-Eu，由于稀土铕主要依赖于2-噻吩甲酰三氟丙酮(简称TTA)的能量转移发光，斯托克位移可达274 nm，其吸收光谱和蓝光发射的香豆素衍生物的荧光发射光谱几乎没有交集，使得红光和蓝光能够同时释放，最终实现白光。考察了激发波长和单分子材料浓度对发光颜色的影响，发现CRP4-Eu在浓度为30 μmol·L

-1

、激发波长为392 nm时，其CIE(Commission Internationale de L'Eclairage)坐标值为(0.33

0.35)，接近于纯白光(0.33

0.33)。这为进一步开发单分子白色有机发光材料提供了基础。

Abstract

In this paper

a novel white light material CRP4-Eu was developed by introducing rare earth europium complex with excellent red light into coumarin derivative with blue light. Since rare earth europium complex is mainly dependent on the energy transfer of the ligand 2-thienoyltrifluoroacetone(TTA)

with a Stokes shift up to 274 nm

the absorption spectrum of rare earth europium has almost no overlap with the fluorescence emission spectrum of coumarin derivative with blue light

so that red light and blue light can be emitted simultaneously

and finally white light can be realized. The effect of excitation wavelength and concentration of CRP4-Eu on the luminescence color was investigated. It was proved that the CIE(Commission Internationale de L'Eclairage) coordinate of CRP4-Eu was (0.33

0.35) when the concentration of CRP4-Eu was 30 μmol·L

-1

and the excitation wavelength was 392 nm

which was close to that of pure white light(0.33

0.33). This provides a basis for the further development of single molecular white organic luminescent materials.

关键词

白光材料香豆素稀土铕配合物单分子白光

Keywords

white light materialcoumarinrare earth europium complexsingle molecular white light

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