A Highly Sensitive and Selective Fluorescence Chemosensor for Cu2+ and Zn2+ Based on Solvent Effect

Authors

  • Xiaobo Huang,

    1. College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, China
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  • Qian Miao,

    1. College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, China
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  • Lu Wang,

    1. Key Lab of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210093, China
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  • Jieming Jiao,

    1. Key Lab of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210093, China
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  • Xianjing He,

    1. College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, China
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  • Yixiang Cheng

    Corresponding author
    1. Key Lab of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210093, China
    • Key Lab of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210093, China, Tel.: 0086-025-83686508; Fax: 0086-025-83317761
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Abstract

A novel fluorescence chemosensor 1 based on (R)-binaphthyl-salen can exhibit highly sensitive and selective recognition responses toward Cu2+ by "turn-off" fluorescence quench type in THF/H2O, and Zn2+ by "turn-on" fluorescence enhancement type in CHCl3/CH3CN, respectively, suggesting that solvents can dramatically affect the responsive properties of salen-based chemosensor. In addition, Cu2+ can lead to the most pronounced changes of CD spectra without the influence of solvents, which indicates this kind chemosensor can also be used as a sole Cu2+ probe based on CD spectra.

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