Synthesis and Fluorescence Properties of Eu3+-trimellitic Acid-1,10-phenanthroline Ternary Complexes Doped with La3+ Ion
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Synthesis and Fluorescence Properties of Eu3+-trimellitic Acid-1,10-phenanthroline Ternary Complexes Doped with La3+ Ion
Chinese Journal of LuminescenceVol. 31, Issue 1, Pages: 131-136(2010)
作者机构:
哈尔滨理工大学 材料科学与工程学院,黑龙江 哈尔滨,150040
作者简介:
基金信息:
DOI:
CLC:O482.31;O614.33
Received:28 July 2009,
Revised:02 January 1900,
Published Online:20 February 2010,
Published:20 February 2010
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ZHANG Jun, DONG Li-min, JIANG Jian-xin, et al. Synthesis and Fluorescence Properties of Eu3+-trimellitic Acid-1,10-phenanthroline Ternary Complexes Doped with La3+ Ion[J]. Chinese journal of luminescence, 2010, 31(1): 131-136.
DOI:
ZHANG Jun, DONG Li-min, JIANG Jian-xin, et al. Synthesis and Fluorescence Properties of Eu3+-trimellitic Acid-1,10-phenanthroline Ternary Complexes Doped with La3+ Ion[J]. Chinese journal of luminescence, 2010, 31(1): 131-136.DOI:
Synthesis and Fluorescence Properties of Eu3+-trimellitic Acid-1,10-phenanthroline Ternary Complexes Doped with La3+ Ion
The rare-earth complexes with aromatic carboxylic acids are a kind of good luminous materials because of the good light-emitting singleness
high luminous intensity and a high quantum efficiency. In recent years
more and more attention has been paid to the fluorescence properties of these complexes. The research showed that addition of the non-fluorescent rare-earth ions can enhance the fluorescence intensity of rare-earth complexes. The trimellitic acid
which has a variety of forms of coordination
is a good performance of the organic ligand. A lot of researches about the complexes of europium with trimellitic acid has been reported
however the study of europium-lanthanum complexes with trimellitic acid and 1
10-phenanthroline has been seldom reported. In this study
the series of solid complexes Eu
1-x
La
x
(TLA)phen(x=0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8) were obtained by the trimellitic acid
1
10-phennanthroline and mixed rare earth chloride of EuCl
3
and LaCl
3
in CH
3
CH
2
OH solution. These complexes were characterized by IR spectrum
TG-DTG and SEM. The IR spectrum showed that the oxygen atoms of carboxylate and the nitrogen atoms of phen coordinate with RE
3+
and these complexes have similar structure. The TG-DTG analysis showed that these complexes are thermally stable. The fluorescence properties of these complexes were also studied. The results indicated that the complexes can emit intense characteristic fluorescence from europium ion. The fluorescence intensities of europium ions are sensitized by the doping of lanthanum ions and the intensity of fluorescence is the best when n(Eu
3+
) : n(La
3+
)=0.5 ∶ 0.5
at same time the position of the emission peak does not changed.
关键词
Keywords
references
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