Synthesis, Structure Characterization and Fluorescence Properties of the Solid Complexes of Rare Earth with 1,10-Phenanthroline and Phenoxyacetic Acid
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Synthesis, Structure Characterization and Fluorescence Properties of the Solid Complexes of Rare Earth with 1,10-Phenanthroline and Phenoxyacetic Acid
Chinese Journal of LuminescenceVol. 30, Issue 5, Pages: 663-667(2009)
作者机构:
1. 内蒙古大学 化学化工学院, 内蒙古 呼和浩特 010021
2. Wuppertal Uniuersity, Wupertal 42119, Germany
作者简介:
基金信息:
DOI:
CLC:O482.31;O614.33
Received:25 January 2009,
Revised:02 January 1900,
Published Online:30 October 2009,
Published:30 October 2009
稿件说明:
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WANG Yan, ZHAO Yong-liang, GAO De-qing, et al. Synthesis, Structure Characterization and Fluorescence Properties of the Solid Complexes of Rare Earth with 1,10-Phenanthroline and Phenoxyacetic Acid[J]. Chinese journal of luminescence, 2009, 30(5): 663-667.
DOI:
WANG Yan, ZHAO Yong-liang, GAO De-qing, et al. Synthesis, Structure Characterization and Fluorescence Properties of the Solid Complexes of Rare Earth with 1,10-Phenanthroline and Phenoxyacetic Acid[J]. Chinese journal of luminescence, 2009, 30(5): 663-667.DOI:
Synthesis, Structure Characterization and Fluorescence Properties of the Solid Complexes of Rare Earth with 1,10-Phenanthroline and Phenoxyacetic Acid
10-phenanthroline were synthesized. Their elemental analysis and rare earth complexometic titration were determined
the results showed that the chemical formulas were SmL
3
L'·1/2H
2
O
EuL
3
L'·1/2H
2
O
TbL
3
L'· 1/2H
2
O
DyL
3
L'·1/2H
2
O
Tb
0.5
Gd
0.5
L
3
L'·1/2H
2
O
Tb
0.5
Y
0.5
L
3
L'·1/2H
2
O
Tb
0.5
La
0.5
L
3
L'·1/2H
2
O(L=C
6
H
5
OCH
2
COO
-
L'=phen).IR spectra
UV spectra and fluorescence spectra were studied. The results indicated that the rare earth ions are bounded with the oxygen atoms of phenoxyacetic acid and phenoxy
and with the N atoms of 1
10-phenanthroline. Fluorescence spectra of the complexes are determined at room temperature
the terbium complex showed that there is a characteristic excitation peak
which is a wide band from 280 to 380 nm
and a maximum peak at 331 nm. For europium complex
the band is from 280 to 370 nm and with a maximum peak at 348 nm.For dysprosium and samarium complexes
the bands are from 290 to 350 nm and 320 to 370 nm
the maximum peaks at 333 nm and 354 nm
respectively.The characteristic excitation peaks are assigned to the ligands metal energy transfer band. So
331
348
333 and 354 nm were chosen as excitation wavelength to measure the fluorescence spectra of terbium
europium
dysprosium and samarium complexes
respectively. The intensity of terbium complex is the strongest
europium complex is second and samarium is the weakest.It was shown that the lowest excitation state energy level of Tb
3+
ion matches well with the triplet state energy of the ligand phenoxyacetic acid and phenanthroline each other
the absorbing energy of the ligands may effectively transferred to Tb
3+
ion. The fluorescence intensity of terbium complex is enhanced after doping Y
3+
ion.
关键词
Keywords
references
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