A new chromogenic and fluorogenic chemosensor for Hg(II) with high selectivity based on the Hg²⁺-promoted deprotection of thioacetals

详细信息    查看全文

• 作者：Zhu YuAuthor Vitae ; Zaiwen TianAuthor Vitae ; Zhengqian LiAuthor Vitae ; Zaoli LuoAuthor Vitae ; Yan LiAuthor Vitae ; Yi LiAuthor Vitae ; Jun Ren ; ^{renjun@hubu.edu.cn" class="auth_mail" title="E-mail the corresponding author}Author Vitae
• 关键词：Mercury ion ; Carbazole ; Azobenzene ; Colorimetric ; Fluorescence ; Chemosensor
• 刊名：Sensors & Actuators: B. Chemical
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：223
• 期：Complete
• 页码：172-177
• 全文大小：1016 K

文摘

In this paper, a thioacetal chemosensor 1 incorporating simultaneously a carbazole moiety and an azobenzene moiety was synthesized. Among other metal ions, Hg²⁺ proved to be able to selectively induce both color and fluorescence changes of 1. The mechanism of Hg²⁺-promoted cleavage of thioacetal was confirmed by ¹H NMR experiments. Upon the addition of Hg²⁺ into the yellow CH₃CN/H₂O solution of 1, the resultant azobenzene-containing thioglycolamide was precipitated from the solution as a mercuric salt, leading to a colorless solution. Therefore, a novel color change pattern was developed.