Highly sensitive and selective fluorescent sensor for Zn2+/Cu2+ and new approach for sensing Cu2+ by central metal displacement |
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Authors: | Li Zhanxian Zhang Lifeng Wang Lina Guo Yongkai Cai Lianheng Yu Mingming Wei Liuhe |
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Affiliation: | Department of Chemistry, Zhengzhou University, Zhengzhou, China. |
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Abstract: | An "off-on" Zn(2+) and "on-off" Cu(2+) fluorescent chemosensor C was designed and synthesized. The binding of C and Zn(2+)/Cu(2+) is chemically reversible by the addition of EDTA disodium solution; moreover, the fluorescence emission signal of ZnC decreased with the addition of Cu(2+), demonstrating that ZnC could detect Cu(2+)via metal displacement. |
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