Both Visual and Fluorescent Sensor for Zn2+ Based on Quinoline Platform

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• 作者：Xiaoyan Zhou ; Bingran Yu ; Yanling Guo ; Xiaoliang Tang ; Huihui Zhang ; Weisheng Liu
• 刊名：Inorganic Chemistry
• 出版年：2010
• 出版时间：May 3, 2010
• 年：2010
• 卷：49
• 期：9
• 页码：4002-4007
• 全文大小：807K
• 年卷期：v.49,no.9(May 3, 2010)
• ISSN：1520-510X

文摘

A fluorescent Zn²⁺ sensor 2-(hydroxymethyl)-4-methyl-6-((quinolinyl-8-imino)methyl)phenol (HMQP) based on the 8-aminoquinoline platform has been synthesized. This sensor displays high selectivity, sensitive fluorescence enhancement, strong binding ability, and ratiometric response to Zn²⁺ in Tris−HCl (50 mM, pH 7.54), THF−H₂O (9:1, v/v). And an obvious color change between HMQP and Zn²⁺−MQP⁻ can be visually observed by the naked eye. The composition of the complex Zn²⁺−MQP⁻ has been found to be 1:2 based on the fluorescence/absorption titration and further confirmed by X-ray crystallography.