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氮杂菲稀土配合物的合成、表征及其荧光性能
Synthesis,Characterization and Studies on Fluorescence Property of Rare Earth with Azatriphenylenes Complexes
- 发光学报 2011年32卷第4期 页码：325-331
- 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：国家自然科学基金(20461002)();内蒙古自然科学基金(200711020203,2010KF03)资助项目()
DOI：10.3788/fgxb20113204.0325
中图分类号： O482.31;O614.33收稿日期：2010-10-28，
修回日期：2010-12-10，
网络出版日期：2011-04-22，
纸质出版日期：2011-04-22
- 稿件说明：
移动端阅览
李欣, 赵永亮, 付晓涛, 孙慧娟. 氮杂菲稀土配合物的合成、表征及其荧光性能[J]. 发光学报, 2011,32(4): 325-331
LI Xin, ZHAO Yong-liang, FU Xiao-tao, SUN Hui-juan. Synthesis,Characterization and Studies on Fluorescence Property of Rare Earth with Azatriphenylenes Complexes[J]. Chinese Journal of Luminescence, 2011,32(4): 325-331
李欣, 赵永亮, 付晓涛, 孙慧娟. 氮杂菲稀土配合物的合成、表征及其荧光性能[J]. 发光学报, 2011,32(4): 325-331 DOI： 10.3788/fgxb20113204.0325.
LI Xin, ZHAO Yong-liang, FU Xiao-tao, SUN Hui-juan. Synthesis,Characterization and Studies on Fluorescence Property of Rare Earth with Azatriphenylenes Complexes[J]. Chinese Journal of Luminescence, 2011,32(4): 325-331 DOI： 10.3788/fgxb20113204.0325.
摘要
分别以二苯甲酰甲烷(HDBM)、1-苯基-3-联苯基-1
3-二酮(HPBPD)为第一配体
以邻菲啰啉(phen)、二吡啶并 哇喔啉(dpq)、二吡啶并 吩嗪(dppz)为第二配体合成了11种三元稀土配合物
对它们进行了元素分析、红外光谱、紫外光谱、差热-热重分析、荧光激发和发射光谱的测定。结果表明
配合物的组成为:
RE
(DBM)
3
L和RE
(PBPD)
3
L
1/2H
2
O(
RE
3+
=Eu
3+
Tb
3+
;
L
=phen
dpq
dppz)
所有配合物均为非电解质;-二酮配体通过羰基氧原子与稀土离子螯合成键
氮杂菲配体配位方式类似于邻菲啰啉
通过两个氮原子配位;-二酮铕系列配合物较铽系列配合物的发光强度更强
中性配体phen、dpq传递能量的能力强于dppz。几种配合物的发光寿命测定结果表明铽配合物Tb(DBM)
3
phen的发光寿命较长
发光强度强的Eu(DBM)
3
dpq配合物发光寿命长于发光强度弱的Eu(DBM)
3
dppz配合物。
Abstract
Eleven rare earth complexes were synthesized with dibenzoylmethane (HDBM)
1-phenyl-3-biphenyl -1
3-dione (HPBPD) as the first ligands and 1
10-phenanthroline(phen)
dipyrido quinoxaline (dpq)
dipyrido- phenazine (dppz) as the second ligands. Their elemental analysis
TG-DTA
UV spectra
IR spectra and fluorescence spectra were measured
the results indicate that the complexes have the compositions of
RE
(DBM)
3
L
and
RE
(PBPD)
3
L
1/2H
2
O (
RE
3+
= Eu
3+
Tb
3+
;
L
=phen
dpq
dppz). The molar conductivity shows that all the complexes are non-electrolyte. The data of IR spectra and UV spectra indicate that the azatriphenylenes through the N atoms of the phenanthroline moiety and HDBM
HPBPD through oxygen atoms coordinated with
RE
3+
ions
respectively. The fluorescence spectra data show that the fluorescence intensity of -diketone Eu
3+
complexes are stronger than the series of complexes of terbium. The abilities of energy transmission of phen and dpq are stronger than dppz. The luminance properties of the rare earth complexes were studied in detail. The triplet state energy of HDBM (20 700 cm
-1
) is higher than that of Eu
3+
5
D
0
(17 293 cm
-1
) and the energy of Tb
3+
5
D
4
(20 454 cm
-1
). In all the ternary complexes
Eu (Ⅲ) complexes have strong fluorescence
while the fluorescence intensity of Tb (Ⅲ) complexes is less than that of Eu (Ⅲ) complexes
which is due to the small difference between the triplet energy of HDBM and the lowest excited state energy of Tb
3+
.Thus it is possible that energy transfer from HDBM ligand to Eu
3+
is more effective. As a high UV absorption coefficient for organic ligands
the energy transfer is effectively to the rare earth luminescent center ion
producing a characteristic emission spectrum.
关键词
Keywords
references
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