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耐高温型4-卤代(氟、氯)苯甲酸铽配合物的合成及荧光性能研究
Study on Synthesis and Fluorescent Properties of High-temperature Resistant Terbium Complexes Using 4-halogenated (F, Cl) Benzoic Acids as Ligands
- 发光学报 2013年34卷第1期 页码：54-60
- 作者机构：
1. 阜阳师范学院 化学化工学院, 安徽 阜阳 236041
2. 安徽省环境污染物降解与监测省级重点实验室,安徽 阜阳,236041
3. 北京大学 化学与分子工程学院 北京,100871
4. 河南师范大学 化学化工学院,河南 新乡,453007
- 作者简介：
- 基金信息：国家自然科学基金(50973003)();河南省教育厅自然科学基础研究计划(2011B150015)();安徽省教育厅自然科学研究项目(KJ2012B135,KJ201
DOI：10.3788/fgxb20133401.0054
中图分类号： O614.33纸质出版日期：2013-1-10，
收稿日期：2012-10-21，
修回日期：2012-11-27，
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李慧珍, 贾亚丽, 乔雪玲, 崔玉民, 张宏, 陶栋梁, 张坤, 罗春华, 董秋静, 李慧泉, 徐怡庄. 耐高温型4-卤代(氟、氯)苯甲酸铽配合物的合成及荧光性能研究[J]. 发光学报, 2013,(1): 54-60
LI Hui-zhen, JIA Ya-li, QIAO Xue-ling, CUI Yu-min, ZHANG Hong, TAO Dong-liang, ZHANG Kun, LUO Chun-hua, DONG Qiu-jing, LI Hui-quan, XU Yi-zhuang. Study on Synthesis and Fluorescent Properties of High-temperature Resistant Terbium Complexes Using 4-halogenated (F, Cl) Benzoic Acids as Ligands[J]. Chinese Journal of Luminescence, 2013,(1): 54-60
李慧珍, 贾亚丽, 乔雪玲, 崔玉民, 张宏, 陶栋梁, 张坤, 罗春华, 董秋静, 李慧泉, 徐怡庄. 耐高温型4-卤代(氟、氯)苯甲酸铽配合物的合成及荧光性能研究[J]. 发光学报, 2013,(1): 54-60 DOI： 10.3788/fgxb20133401.0054.
LI Hui-zhen, JIA Ya-li, QIAO Xue-ling, CUI Yu-min, ZHANG Hong, TAO Dong-liang, ZHANG Kun, LUO Chun-hua, DONG Qiu-jing, LI Hui-quan, XU Yi-zhuang. Study on Synthesis and Fluorescent Properties of High-temperature Resistant Terbium Complexes Using 4-halogenated (F, Cl) Benzoic Acids as Ligands[J]. Chinese Journal of Luminescence, 2013,(1): 54-60 DOI： 10.3788/fgxb20133401.0054.
摘要
以4-氟苯甲酸(4-FBA)、4-氯苯甲酸(4-ClBA)为配体制备了具有良好热稳定性的稀土配合物Tb(4-FBA)
3
·2H
2
O和Tb(4-ClBA)
3
·2H
2
O
与前期工作中合成的Tb(4-BrBA)
3
的紫外及荧光光谱进行了分析比较。紫外-可见光吸收光谱表明
相同浓度下
3种配合物的紫外吸收能力以Tb(4-FBA)
3
·2H
2
O、Tb(4-ClBA)
3
·2H
2
O、Tb(4-BrBA)
3
顺序依次增大。液体荧光光谱表明
Tb(4-ClBA)
3
·2H
2
O的荧光发射强度最强。从配体的能级、配合物的紫外吸收能力及能量传递过程中的热振动损耗等方面对实验结果进行了讨论分析。热重分析表明
Tb(4-FBA)
3
·2H
2
O和Tb(4-ClBA)
3
·2H
2
O在450℃出现快速分解。将2种配合物放置于马弗炉中350℃加热1h后
发现Tb(4-FBA)
3
·2H
2
O的荧光发射强度降低了24%
Tb(4-ClBA)
3
·2H
2
O荧光发射强度仅降低了13%左右
表明2种配合物高温条件下分子结构保持稳定
加热后2种配合物的红外光谱也表明2种配合物在高温条件下未发生分解。
Abstract
High-temperature resistant rare earth complexes Tb(4-FBA)
3
·2H
2
O and Tb(4-ClBA)
3
·2H
2
O were synthesized using 4-halogenated benzoic acids (4-fluorobenzoicacid and 4-chlorobenzoicacid) as ligands
respectively. They were characterized by the UV-spectra and fluorescent spectra and were compared with Tb(4-BrBA)
3
which was synthesized by previous work. The UV spectra revealed that absorption intensities of the three kinds of terbium complexes Tb(4-FBA)
3
·2H
2
O
Tb(4-ClBA)
3
·2H
2
O and Tb(4-BrBA)
3
in turn increased with the same molar concentration. The fluorescent spectra showed that the fluorescent intensity of Tb(4-ClBA)
3
·2H
2
O was the strongest. The relationship among energy level of the ligands
the ability of complexes absorbing UV energy and the non-radiative transitions was investigated for the experimental results. The thermal analysis indicated that Tb(4-FBA)
3
·2H
2
O and Tb(4-ClBA)
3
·2H
2
O started to lose weight around 100℃
suggesting the decomposition of crystal water and adsorbed water of the complexes
and the further mass loss around 450 ℃ belonged to the rapid decomposition of the complexes. When the two kinds of complexes placed in a muffle furnace were heated at 350 ℃ for 1 hour
it was disco-vered that the strongest fluorescence intensity of the Tb(4-FBA)
3
·2H
2
O reduced by 24% and Tb(4-ClBA)
3
·2H
2
O reduced by 13%. The IR spectra of the two kinds of complexes after heated showed that they did not decompose at high temperature.
关键词
铽配合物4-卤苯甲酸荧光热稳定性
Keywords
terbium complexes4-halogen benzoic acidfluorescentthermal stability
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