基于聚集诱导效应(AIE)-激发态分子内质子转移(ESIPT)效应的四苯乙烯荧光探针对Zn(Ⅱ)检测研究  

Detection of Zn(Ⅱ)by Tetraphenylethyene Fluorescent Probe Based on Aggregation-Induced Emission(AIE)-Excited State Intramolecular Proton Transfer(ESIPT)Effect

作　　者：张继东 杨垚 张杰 厍伟 Zhang Jidong;Yang Yao;Zhang Jie;She Wei(Quality Supervision and Inspection Centre of Se-Enriched Food of Shaanxi Province,School of Chemistry&Chemical Engineering,Ankang University,Ankang,Shaanxi 725000;Key Laboratory of Se-Enriched Products Development and Quality Control of Ministry of Agriculture,Se-Enriched Products Research Institute of China,Ankang,Shaanxi 725000)

机构地区：[1]安康学院化学化工学院陕西省富硒食品质量监督检验中心,陕西安康725000 [2]中国富硒产业研究院农业农村部富硒产品开发与质量控制重点实验室,陕西安康725000

出　　处：《有机化学》2024年第4期1337-1342,共6页Chinese Journal of Organic Chemistry

基　　金：陕西省技术创新引导专项基金(No.2022QFY09-09);陕西省重点研发计划(No.2023YBGY-152);陕西省教育厅专项科研计划项目(No.23JK0274);安康学院科研项目重点项目(No.2021AYZD03);国家级大学生创新创业训练计划(No.202211397014);陕西省大学生创新创业训练计划(No.S202211397031)资助项目。

摘　　要：设计合成了一种以四苯乙烯为荧光基团、邻香草醛为识别基团的聚集诱导效应(AIE)Zn^(2+)荧光探针.探针的结构通过^(1)H NMR、质谱及X射线单晶衍射进行了表征.荧光光谱研究发现,探针对Zn^(2+)表现出良好的选择性和灵敏性,荧光强度随着Zn^(2+)的浓度增大而逐渐增强.通过Job plot和单晶结构表征发现,探针与Zn^(2+)是2∶1的结合模式,检测限为56.2 nmol·L^(-1).检测机理归因于激发态分子内质子转移(ESIPT)和AIE效应.该新型AIE探针可作为分析测定Zn^(2+)的一种便捷工具.A aggregation induced effect(AIE)Zn^(2+)fluorescence probe with tetrastyrene as the fluorescent group and orthovanillin as the recognition group was designed and synthesized.The structure of the probe was characterized by ^(1)H NMR,MS and single-crystal X ray diffraction.The fluorescence spectra showed that the probe has good selectivity and sensitivity to Zn^(2+),and its fluorescence enhances with the increase of concentration of Zn^(2+).Through job plot and single crystal structure characterization,it was found that the probe has a 2∶1 binding mode with Zn^(2+),and the detection limit is 56.2 nmol·L^(-1).The detection mechanism was attributed to the excited state intramolecular proton transfer(ESIPT)and AIE effect.The new AIE probe can be used as a convenient tool for the analysis and determination of Zn^(2+).

关 键 词：四苯乙烯 聚集诱导发光 荧光探针 锌配合物 

分 类 号：O657.3[理学—分析化学]