Selectively Fluorescent Sensing Behavior of Phenylaza‐15‐crown‐5‐triazolyl Coumarin for Hg2+ and Fe3+ in Alcohol and Aqueous Media Respectively

Selectively Fluorescent Sensing Behavior of Phenylaza‐15‐crown‐5‐triazolyl Coumarin for Hg2+ and Fe3+ in Alcohol and Aqueous Media Respectively
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DOI:
10.1002/cjoc.201300216
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发表时间:
2013-05
影响因子:
5.4
通讯作者:
Zhi‐Jun Zhang;Hui Wang;H. Zhang;Yu Liu
Zhi‐Jun Zhang;Hui Wang;H. Zhang;Yu Liu
中科院分区:
化学2区
文献类型:
--
作者:
Zhi‐Jun Zhang;Hui Wang;H. Zhang;Yu Liu

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通过铜(I)催化的Huisgen炔-叠氮1,3-偶极环加成(CuAAC“点击”反应)合成了π-共轭苯基氮杂-15-冠-5-三唑取代的香豆素氟离子载体1。 1 对水溶液中的 Fe3+ 比 Hg2+、Cr3+ 和其他金属离子表现出选择性荧光增强。与此形成鲜明对比的是,Fe3+ 和 Hg2+ 之间的荧光行为在 EtOH 中完全相反。也就是说,Hg2+ 相对于 Cr3+、Fe3+ 和其他金属离子具有最大的荧光增强作用。
A π-conjugated phenylaza-15-crown-5-triazol-substituted coumarin fluoroionophore 1 was synthesized by copper(I)-catalyzed Huisgen alkyne-azide 1,3-dipolar cycloaddition (CuAAC "click" reaction). 1 can display selective fluorescence enhancement toward Fe3+ over Hg2+, Cr3+ and the other metal ions in aqueous solution. In sharp contrast, the fluorescence behavior between Fe3+ and Hg2+ is completely reversed in EtOH. That is, Hg2+ gives the largest fluorescence enhancement over Cr3+, Fe3+ and the other metal ions.