功能性三价铕离子的金属有机骨架选择性荧光识别芘  

A functionalized Eu^(3+) metal⁃organic framework for selective fluorescent detection of pyrene

作　　者：赵沛然 刘屿芊 何成[1] 段春迎[1] ZHAO Peiran;LIU Yuqian;HE Cheng;DUAN Chunying(State Key Lab of Fine Chemicals,Dalian University of Technology,Dalian,Liaoning 116024,China)

机构地区：[1]大连理工大学,精细化工国家重点实验室,大连116024

出　　处：《无机化学学报》2024年第4期713-724,共12页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21890381)资助。

摘　　要：成功设计并通过水热法合成了一种具有功能性三维结构的镧系金属有机骨架Eu-4L,其配体为二苯胺四羧酸衍生物(H4L)。Eu-4L的骨架中含有3D空腔,且其比表面积较高。Eu-4L不仅热稳定性较高,且在pH为3~11的范围内稳定性良好。Eu-4L可以作为荧光探针选择性识别稠环芳烃芘,其检测限为5μmol·L^(-1),具有较高的灵敏度,且具备可循环重复利用的特性。Eu-4L荧光识别芘的作用机理为稳态荧光识别机理。此外,对Eu-4L的荧光识别选择性、竞争能力也进行了详细地讨论。A functional 3D lanthanide metal-organic framework(Eu-4L)was successfully designed and synthesized by solvothermal method.The ligand of Eu-4L is a kind of diphenylamine tetracarboxylic acid derivative(named H_(4)L).The specific surface area of Eu-4L was high,which made Eu-4L have an excellent 3D structure.Eu-4L had good thermostability and can remain stable in water of pH from 3 to 11.Eu-4L can be used as a fluorescent probe for sensing pyrene.The limit of detection of Eu-4L for sensing pyrene was 5μmol·L^(-1),which displays high sensitivity.Eu-4L is also a kind of recyclable material.The fluorescence sensing mechanism of Eu-4L for sensing pyrene belongs to the static mechanism.Moreover,the selectivity and competition of Eu-4L are also discussed.CCDC:2268274.

关 键 词：金属有机骨架 荧光识别 芘 铕 稠环芳烃 

分 类 号：O614.338[理学—无机化学]