An efficient sensor for relay recognition of Zn²⁺ and Cu²⁺ through fluorescence ¡®off-on-off¡¯ functionality

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• 作者：Lijun Tang ; Jia Zhao ; Mingjun Cai ; Pei Zhou ; Keli Zhong ; Shuhua Hou ; Yanjiang Bian
• 关键词：Zinc sensor ; Copper recognition ; Relay recognition ; Displacement
• 刊名：Tetrahedron Letters
• 出版年：2013
• 出版时间：6 November, 2013
• 年：2013
• 卷：54
• 期：45
• 页码：6105-6109
• 全文大小：1667 K

文摘

A new bis(8-carboxamidoquinoline) dangled binaphthol derivatized fluorescent sensor (L) was designed and synthesized. L behaves ratiometric response to Zn²⁺ with high selectivity accompanied by remarkable emission enhancement and red shift. The resultant L-Zn²⁺ complex can act as a Cu²⁺ sensing probe with fluorescence quenching behavior through direct Zn²⁺ ion replacement. Furthermore, the binding modes of Zn²⁺ and Cu²⁺ with L are elucidated by X-ray crystallographic analysis, respectively.