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, 2021, 42(11): 1781-1786.
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, 2021, 42(11): 1781-1786. DOI: 10.37188/CJL.20210246.
Development of Single Molecular White Light Material Based on Rare Earth Europium Complexes增强出版
、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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