YIN Xian-hong, FENG Yu, BAI Li-juan, MA Shao-mei, SHI Zhan-wang, HUANG Zhong-jing, DIAO Kai-sheng. Fluorescence Properties of Rare Earth Complexes with Bis-β-ketone[J]. Chinese Journal of Luminescence, 2006,27(1): 105-112
YIN Xian-hong, FENG Yu, BAI Li-juan, MA Shao-mei, SHI Zhan-wang, HUANG Zhong-jing, DIAO Kai-sheng. Fluorescence Properties of Rare Earth Complexes with Bis-β-ketone[J]. Chinese Journal of Luminescence, 2006,27(1): 105-112DOI:
the rare earth ion has the better fluorescence specific
and could react with many organic ligands to form the good fluorescence complexes. This article simply has introduced syn-thesis of bis β-ketone and studied fluorescence performance of Eu
3+
Tb
3+
-bis β-ketone system. This system has the good fluorescence characteristic through its fluorescence spectrum determination and contrast
analysis of the different factor
including the solvent
ligand structure
the influence of pH value on the fluorescence intensity. The experiment result showed: in the system of rare earth(Eu
3+
or Tb
3+
)bis-β-ketone
the luminescence intensity was higher in the ethanol than that in the water. Emulsifier OP enhanced the luminescence greatly.The effect of pH was investigated in the range of 4
1
0
but the luminescence signal was observed to be the strongest at pH=6. The effect of different ligands was studied also
and the sequence of the enhance is: H
2
L
1
>
H
2
L
2
>
H
2
L
3
. The Eu
3+
has a nice match with the bis-β-ketone ligands
but Tb
3+
didn't match with the bis-β-ketone ligands perfectly
and the luminescence intensity of the Eu
3+
-H
2
L
1
complex is the strongest in three ligands complexes.
关键词
Keywords
references
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