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3,4-噻吩二羧酸、1,10-邻菲罗啉与稀土配合物的荧光性质及对硝基苯的检测
引用本文:李睿,樊婷婷,屈相龙,董高云,李佳佳,李夏,宋雨欣,赵鑫萌,李想. 3,4-噻吩二羧酸、1,10-邻菲罗啉与稀土配合物的荧光性质及对硝基苯的检测[J]. 光谱学与光谱分析, 2016, 36(8): 2522-2526. DOI: 10.3964/j.issn.1000-0593(2016)08-2522-05
作者姓名:李睿  樊婷婷  屈相龙  董高云  李佳佳  李夏  宋雨欣  赵鑫萌  李想
作者单位:首都师范大学化学系,北京 100048
基金项目:国家自然科学基金项目(21471104)
摘    要:3,4-噻吩二羧酸(3,4-H2tdc),1,10-邻菲罗啉(phen)和稀土硝酸盐经水热法合成三种配合物Ln2(Htdc)2(tdc)2(phen)2(H2O)4(Ln=Eu 1, Gd 2, Tb 3),并用X-射线单晶衍射分析方法测定了配合物1-3晶体结构,配合物1-3为双核分子。每个金属离子周围有2个3,4-tdc,1个3,4-Htdc,1个phen和2个配位水分子,配位数为9。配合物1和3在紫外灯下显强红光和绿光,其荧光发射光谱,在619和545 nm出现最大发射峰,分别对应于Eu(Ⅲ)离子的5D0→7F2和Tb(Ⅲ)离子的5D4→7F5跃迁。配合物2在425 nm观察到来自基于配体的π*→π最大发射峰。不同溶剂分子对配合物1荧光有不同程度的影响,基于荧光猝灭机理,配合物1具有选择性检测硝基苯污染物的能力。

关 键 词:稀土配合物  4-噻吩二羧酸  晶体结构  荧光   
收稿时间:2015-09-08

Fluorescence Properties and the Detection of Nitrobenzene of Lanthanides Complex with 3,4-Thiophenedicarboxylic Acid and 1,10 Phenanthroline
LI Rui,FAN Ting-ting,QU Xiang-long,DONG Gao-yun,LI Jia-jia,LI Xia,SONG Yu-xin,ZHAO Xin-meng,LI Xiang. Fluorescence Properties and the Detection of Nitrobenzene of Lanthanides Complex with 3,4-Thiophenedicarboxylic Acid and 1,10 Phenanthroline[J]. Spectroscopy and Spectral Analysis, 2016, 36(8): 2522-2526. DOI: 10.3964/j.issn.1000-0593(2016)08-2522-05
Authors:LI Rui  FAN Ting-ting  QU Xiang-long  DONG Gao-yun  LI Jia-jia  LI Xia  SONG Yu-xin  ZHAO Xin-meng  LI Xiang
Affiliation:Department of Chemistry, Capital Normal University, Beijing 100048, China
Abstract:3,4-thiophenedicarboxylic acid (3,4-H2tdc) as the first ligand, 1,10-phenanthroline (phen) as the auxiliary ligand, three complexes Ln2(Htdc)2(tdc)2(phen)2(H2O)4(Ln=Eu 1, Gd 2, Tb 3) were synthesized with hydrothermal method. Single-crystal X-ray diffraction analysis reveals that complexes 1-3 were isostructural crystallize and both of complexes are binuclear molecules. In the complexes 1-3, the coordination number is nine. Each metal is bound to two 3, 4-tdc ligand, one 3,4-Htdc ligand, one phen and two water molecule. Complexes 1 and 3 display the red and green light under UV lamp, corresponding the characteristic peaks from 619 nm (5D0→7F2) and 545 nm (5D4→7F5). Complex 2 expresses a broad band at 425 nm is attributed to π*→π transition. Furthermore, under the excitation wavelength of 329 nm, the effects of different solvents on complex 1 was discussed and complex 1 could be a potential luminescent probe for detecting nitrobenzene through fluorescence quenching mechanism.
Keywords:Lanthanide complexes  3,4-thiophenedicarboxylic acid  Crystal structure  Luminescence
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