稠杂环醛缩氨基硫脲类席夫碱汞离子荧光探针的合成及其性能研究  

Synthesis of fused-heterocyclic aldehyde thiosemicarbazone Schiff base as mercury ion fluorescent probe and study on its optical properties

作　　者：史天柱 解正峰 吴福勇 余梅 赵晶晶 李宏河 SHI Tian-zhu;XIE Zheng-feng;WU Fu-yong;YU Mei;ZHAO Jing-jing;LI Hong-he(Department of Brewing Engineering,Moutai Institute,Zunyi 564507,China;Sichuan Provincial Key Laboratory of Oil&Gas Field Applied Chemistry,College of Chemistry&Chemical Engineering,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]茅台学院酿酒工程系,贵州遵义564507 [2]西南石油大学化学化工学院,油气田应用化学四川省重点实验室,四川成都610500

出　　处：《现代化工》2024年第11期244-249,共6页Modern Chemical Industry

基　　金：2024年度贵州省基础研究计划(自然科学)青年引导项目(黔科合基础-[2024]青年203);贵州省高等学校现代白酒酿造技术工程研究中心(黔教技[2023]028);茅台学院高层次人才科研启动经费项目(mygccrc[2022]007,mygccrc[2022]097,mygccrc[2022]031,mygccrc(2022)001);大学生创新创业训练计划项目(202314625011)。

摘　　要：通过席夫碱缩合反应策略,成功合成了2种新颖的稠杂环结构氨基硫脲类席夫碱型荧光离子探针M1与M2。为验证化合物M1与M2的分子结构,采用红外光谱(IR)、核磁共振氢谱(^(1)HNMR)、核磁共振碳谱(^(13)CNMR)以及高分辨质谱(HRMS)进行表征。通过紫外光谱法和荧光光谱法研究了M1和M2对金属离子的识别特性。实验发现,M1和M2能对汞离子进行选择性识别,并伴随着明显的颜色变化和荧光完全淬灭,且其他共存金属离子对其干扰较小。M1和M2的检出限分别为6.79×10^(-7)、5.81×10^(-7) mol/L(通过3σ法则计算)。Two novel fluorescent ion probes,M1 and M2,belonging to the class of thiosemicarbazone-based Schiff bases with fused-heterocyclic structure,are successfully synthesized via Schiff base condensation reaction strategy.To validate the molecular structure of M1 and M2,comprehensive characterization is performed by means of infrared spectroscopy(IR),proton nuclear magnetic resonance(^(1)HNMR),carbon-13 nuclear magnetic resonance(^(13)CNMR),and high-resolution mass spectrometry(HRMS).The recognition properties of M1 and M2 to metal ions are studied through UV-Vis spectroscopy and fluorescence spectroscopy.Experimental results reveal that both M1 and M2 can selectively identify mercury ions(Hg2+),accompanied with distinct color changes and complete fluorescence quenching.Notably,their performance is hardly interfered by the presence of other coexisting metal ions.Furthermore,the limits of detection(LODs)for M1 and M2 to mercury ions are 6.79×10^(-7) mol·L^(-1) and 5.81×10^(-7) mol·L^(-1),respectively,calculated according to the 3σrule.

关 键 词：席夫碱 氨基硫脲 荧光探针 汞 

分 类 号：O656.31[理学—分析化学]