一种可用于检测水中Cu^(2+)的锌配位聚合物荧光传感器  

A zinc coordination polymer fluorescence sensor for detecting Cu^(2+) in water

作　　者：白羽婷 魏晓阳 尤雪瑞 张志超 韩美荣 郭湘 赵艺妍 BAI Yuting;WEI Xiaoyang;YOU Xuerui;ZHANG Zhichao;HANG Meirong;GUO Xiang;ZHAO Yiyan(Department of Energy Chemistry and Materials Engineering,Shanxi Institute of Energy,Jinzhong 030600,Shanxi,China;Institute of Molecular Science,Shanxi University,Taiyuan 030006,Shanxi,China;Department of Modern Chemical Engineering,Shanxi Engineering Vocational College,Taiyuan 030001,Shanxi,China;Shanxi Bethune Hospital,Shanxi Academy of Medical Sciences,Tongji Shanxi Hospital,Third Hospital of Shanxi Medical University,Taiyuan 030032,Shanxi,China)

机构地区：[1]山西能源学院能源化学与材料工程系,山西晋中030600 [2]山西大学分子科学研究所,山西太原030006 [3]山西工程职业学院现代化工系,山西太原030001 [4]山西白求恩医院(山西医学科学院同济山西医院)山西医科大学第三医院,山西太原030032

出　　处：《化工进展》2024年第10期5686-5692,共7页Chemical Industry and Engineering Progress

基　　金：山西省基础研究计划(202203021222348);山西省高等学校科技创新项目(2023L406);山西能源学院院级科研基金(ZB-2023006,ZY-2023017)。

摘　　要：铜离子(Cu^(2+))作为一种重金属在人体中起着关键作用,但是过量的Cu^(2+)会诱发各种疾病,危害人体健康。因此,开发快速、灵敏检测Cu^(2+)的新型荧光传感器非常重要。本文以1,4-双(3,5-二羧基苯氧基)苯(H_(4)L)为主配体,邻菲啰啉(phen)为辅配体通过水热法成功制备了一维链状锌配位聚合物(Zn-CP),可作为高效检测水中Cu^(2+)的荧光传感器。该Zn-CP具有优异的荧光特性,可通过荧光猝灭作用特异、灵敏地检测水溶液中的Cu^(2+)。在0~0.8×10^(-6)mol/L的范围内,Cu^(2+)浓度与传感器的荧光衰减呈现良好的线性关系,检出限为1.22×10^(-8)mol/L,低于美国环境保护署规定的限值(2.05×10^(-5)mol/L)。此外,Zn-CP在Cu^(2+)检测中的猝灭机理可归因于配位聚合物与Cu^(2+)之间形成新的化学键。这项工作为构建具有水稳定系的配位聚合物类荧光传感器提供了一种新的策略。As a heavy metal,copper ion(Cu^(2+))plays a key role in human bodies,but excessive Cu^(2+)can induce various diseases and endanger human health.Therefore,it is important to develop new fluorescent sensors to detect Cu^(2+)rapidly and sensitively.One-dimensional chain zinc coordination polymer(Zn-CP)was successfully prepared by hydrothermal method using 1,4-bis(3,5-dicarboxy phenoxy)benzene(H_(4)L)as the primary ligand and 1,10-phenanthroline(phen)as the secondary ligand,which can be used as a fluorescence sensor for the efficient detection of Cu^(2+)in water.The Zn-CP possessed excellent fluorescent properties and can selectively and sensitively detect Cu^(2+)in aqueous solutions through luminescence quenching.In the range of 0—0.8×10^(-6)mol/L,the Cu^(2+)concentration showed a good linear relationship with the fluorescence attenuation of the sensor and the detection limit was 1.22×10^(-8)mol/L,which was lower than the limit set by the US Environmental Protection Agency(2.05×10^(-5)mol/L).In addition,the quenching mechanism of Zn-CP in Cu^(2+)detection may be attributed to the formation of new chemical bonds between the coordination polymers and the Cu^(2+).This work provided a new strategy for the construction of coordination polymer-based fluorescence sensors with water-stable systems.

关 键 词：配位聚合物 过渡金属 水热 制备 荧光探针 环境 

分 类 号：O625[理学—有机化学]