含咔唑基氨基硫脲类汞离子探针的合成及其性能研究  

Synthesis and properties of carzabole-based probe containing thiosemicarbazide for mercury ion

作　　者：陈丽萍[1] 殷芳芳[1] 周鹏妹 刘俊[1] 李村[1] 方敏[1] 朱维菊[1] 

机构地区：[1]安徽大学化学化工学院绿色高分子材料安徽省重点实验室,合肥230601

出　　处：《功能材料》2015年第21期21041-21044,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(21404001);安徽大学博士基金资助项目(33190105);安徽大学大学生创新创业训练计划资助项目(AH201310357156)

摘　　要：以3-甲酰基-N-丁基咔唑和4-苯基-3-硫代氨基脲为反应原料,合成了一种基于咔唑的席夫碱衍生物L(3-甲酰基-N-丁基咔唑缩4-苯基-3-硫代氨基脲席夫碱),用IR、1 H NMR及元素分析对其结构进行了表征。通过紫外-可见光谱、荧光光谱及1 H NMR谱研究了L对Hg2+的选择性识别性能。实验结果表明,L与Hg2+能够以2∶1的化学计量比形成配合物,结合常数为7.6×104 L/mol,且L对Hg2+有很好的选择性,受常见离子的干扰较小。A new 4-Phenyl-3-thiosemicarbazide-based Schiff-base(L)was synthesized.Its structure was characterized by using IR,1 H NMR and elemental analysis.The influences of a number of different metal ions on its UV-Vis absorption and fluorescence spectral were studied in acetonitrile.Spectroscopic studies revealed that L could detect Hg2+by UV-Vis absorption and fluorescence spectrophotometry.The stoichiometry ratio of LHg2+was 2∶1,respectively.The analysis suggested that L could behave as a fluorescent sensor for the selective detection of Hg2+and the binding constant was 7.6 × 104 L/mol.

关 键 词：席夫碱 咔唑衍生物 汞离子 氨基硫脲 荧光探针 

分 类 号：O626.31[理学—有机化学]