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Tm3+在二苯甲酰基甲基亚砜配合物体系中对Dy3+的荧光增强效应
Enhanced Luminescence in Complexes
- 发光学报 2009年30卷第5期 页码：568-574
- 作者机构：
内蒙古大学 化学化工学院,内蒙古 呼和浩特,010021
- 作者简介：
- 基金信息：
DOI：
中图分类号： O482.31收稿日期：2008-12-23，
修回日期：1900-01-02，
网络出版日期：2009-10-30，
纸质出版日期：2009-10-30
- 稿件说明：
移动端阅览
李文先, 石晓燕, 孙晓军, 等. Tm3+在二苯甲酰基甲基亚砜配合物体系中对Dy3+的荧光增强效应[J]. 发光学报, 2009,30(5):568-574.
Enhanced Luminescence in Complexes[J]. Chinese journal of luminescence, 2009, 30(5): 568-574.
摘要
合成了六种高氯酸掺杂稀土(Dy
3+
Tm
3+
)与二苯甲酰基甲基亚砜的配合物。经元素分析、稀土络合滴 定、摩尔电导率及差热-热重分析
表明配合物组成为 (Dy
x
Tm
y
)L
5
(ClO
4
)
3
·3H
2
O(x : y=1.000 : 0.000
0.995 : 0.005
0.990 : 0.010
0.950 : 0.050
0.900 : 0.100
0.800 : 0.200;L=C
6
H
5
COCH
2
SOCH
2
COC
6
H
5
)。并详细讨论了六种稀土配合物的荧光光谱。从配合物的荧光光谱图可以看出
Tm
3+
对Dy
3+
的荧光有增强效应。这可能 是因为在惰性稀土离子Tm
3+
与活性稀土离子Dy
3+
之间有能量的传递。而且当Dy
3+
与Tm
3+
的量比为0.950 : 0.050时
掺杂配合物表现出最佳的发光性质。另外
Tm
3+
对577.4 nm处
4
F
9/2
→
6
H
13/2
峰的荧光敏化作用的程度高于对487 nm处
4
F
9/2
→
6
H
15/2
峰的荧光敏化作用。
4
F
9/2
→
6
H
15/2
峰的荧光强度增强了212％
而
4
F
9/2
→
6
H
13/2
峰的荧光强度增强了264％。所以
Dy
3+
离子的两个特征峰的发射强度比趋近于1
为1.078
使得配合物在紫外灯下发白色荧光。有可能成为一类发白色荧光的发光材料。
Abstract
Complexes of (Dy
x
Tm
y
)L
5
(ClO
4
)
3
·3H
2
O(x : y=1.000 : 0.000
0.995 : 0.005
0.990 : 0.010
0.950 : 0.050
0.900 : 0.100
0.800 : 0.200;L=C
6
H
5
COCH
2
SOCH
2
COC
6
H
5
)were synthesized. The properties of the complexes were characterized with elemental analysis
infrared spectra (IR) and ultraviolet absorption spectra. The fluorescence spectra of these complexes were discussed in detail
indicating that the fluorescence intensity of Dy (Ⅲ) is enhanced by Tm (Ⅲ). This phenomenon may be due to the intra-molecular energy transfer. The complex shows the best luminescence properties when the ratio of Dy (Ⅲ) to Tm (Ⅲ) is 0.950 : 0.050. As a result
the complexes can emit white fluorescence under the ultraviolet excitation. It is predicted the complexes will become a class of luminescence materials that emit white fluorescence.
关键词
Keywords
references
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