摘要
以2-(3’,4’-二羧基苯氧基)苯甲酸(H3DPBA)和1,3-二(4-吡啶基)-丙烷(bpp)为配体,与Zn(Ac)2通过水热反应,获得了一维链状配合物Zn(DPBA)(bpp)。该配合物的一个不对称单元包括一个Zn(Ⅱ)离子,一个DPBA配体和一个bpp配体。Zn(Ⅱ)离子与四个氧原子及一个氮原子配位,其配位数为5。固态配合物在375nm处出现强的发射峰,来自于配体的π~*—π跃迁。与配体的荧光发射光谱比较,配合物的荧光发射峰发生了蓝移,而且配合物的荧光发射强度有大幅度增强。讨论了配合物在常见溶剂中和金属阳离子中的荧光性质。实验结果表明不同有机小分子或不同金属阳离子对配合物的荧光强度有不同程度的影响,有机小分子硝基苯和Fe^(3+)使配合物荧光猝灭,该Zn(Ⅱ)-配合物可用于硝基苯的检测以及水和乙醇体系中Fe^(3+)的检测。
In this paper,Zn(DPBA)(bpp)complex was synthesized with 2-(3',4'-dicarboxyphenoxy)benzoate(DPBA)as the first lig and , and 1,3-bis(4-pyridyl)-propane(bpp)as the second lig and .The complex shows a one-dimensional chain structure, and its asymmetric unit includes one Zn(Ⅱ),one DPBA lig and and one bpp lig and .Zn(Ⅱ)ion is coordinated with four oxygen atoms and one nitrogen atom.The complex has good fluorescence property with a wide emission b and appearing at 375 nm,which is theπ~*—πtransition of the lig and .Compared with the fluorescence emission of the lig and s,the emission peak of the complex is blue shifted, and the emission intensity is greatly enhanced.The fluorescence properties of the complex in common solvents and metal cations were also studied.Experimental results show that the influence of different small organic molecules or different metal cations on the fluorescence of the complex,small organic molecule nitrobenzene and Fe^(3+)make the fluorescence quenching of the complex.Thus,the complex can be used for the detection of nitrobenzene and Fe^(3+)ion in the water and ethanol system.
作者
罗李林
王秋爽
谢美婷
席宇新
李夏
LUO Li-lin WANG Qiu-shuang XIE Mei-ting XI Yu-xin LI Xia(Department of Chemistry, Capital Normal University, Beijing 100048, China)
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2017年第9期2809-2812,共4页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金项目(21471104)
首都师范大学交叉科研项目(009175302600)
实验室开放基金项目(LIP173075095)资助