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
中科院分区:
文献类型:
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作者:
Zhi‐Jun Zhang;Hui Wang;H. Zhang;Yu Liu
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.