铕(Ⅲ)金属有机骨架作为荧光探针在水溶液中对Pb^(2+)的选择性和灵敏性传感  

Europiummetal‑organic framework as a fluorescent probe for selectively and sensitively sensing Pb^(2+)in aqueous solution

作　　者：罗俊 刘宝姝 张运昌 王柄凯 郭贝贝 佘岚 陈天恒 LUO Jun;LIU Baoshu;ZHANG Yunchang;WANG Bingkai;GUO Beibei;SHE Lan;CHEN Tianheng(School of Pharmacy,Naval Medical University,Shanghai 200433,China)

机构地区：[1]海军军医大学药学院,上海200433

出　　处：《无机化学学报》2024年第12期2438-2444,共7页Chinese Journal of Inorganic Chemistry

基　　金：海军军医大学面上孵化基金(No.2023MS011)资助。

摘　　要：以单芳环多羧酸苯六甲酸(H_(6)BHC)为配体,与Eu(NO_(3))_(3)·6H_(2)O进行水热反应,成功得到了一个新的铕金属有机骨架(H_(3)O)_(6)[Eu(BHC)(H_(2)O)]2·H_(2)O(1)。单晶X射线衍射分析表明:在1中,相邻的2个Eu离子通过BHC6-桥联成二聚单元并作为一个结点,结点之间通过BHC^(6-)桥沿a轴和c轴相连形成二维层状结构,最后沿着b轴通过氢键的交联作用形成三维网络结构。光致发光测试表明1可以在水体系中实现对Pb^(2+)的选择性和灵敏性传感且检测限(LOD)低至0.42μmol·L^(-1)。A novel europium metal‑organic framework(Eu‑MOF)with formula(H_(3)O)_(6)[Eu(BHC)(H_(2)O)]_(2)·H_(2)O(1)has been synthesized successfully via the hydrothermal method by using a monoaromatic polycarboxylic acid ligand benzenehexacarboxylic acid(H_(6)BHC)reacting with Eu(NO_(3))_(3)·6H_(2)O.Single‑crystal X‑ray diffraction analysis reveals that in 1 the adjacent two Eucations are bridged by the BHC6-ligands to form the Eu dinuclear unit as a node,and then the Eu dinuclear nodes join each other via the BHC6-as bridges plus the hydrogen bond interactions along a‑,b‑and c‑axis to form a unique 3D network structure.Photoluminescence measurement indicates that 1 possesses the following advantages as the fluorescent probe:1 displayed a very low limit of detection(LOD)for Pb^(2+)(0.42μmol·L^(-1))in an aqueous system,and 1 demonstrated higher selectivity.CCDC:2299340,1.

关 键 词：铕 苯六甲酸 金属有机骨架 荧光探针 检测 铅离子 

分 类 号：O614.338[理学—无机化学]