Chemical Research in Chinese Universities ›› 2014, Vol. 30 ›› Issue (6): 910-914.doi: 10.1007/s40242-014-4094-y

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Hg2+-Selective Fluorescent Chemosensor Based on Cation-π Interaction

YANG Huixiao1,2, HU Qinzhi1,2, MA Guochun1,2, CHEN Guofeng1,2, TAO Minli1,2, ZHANG Wenqin1,2   

  1. 1. Department of Chemistry, School of Science, Tianjin 300072, P. R. China;
    2. Collaborative Innovation Center of Chemical Science and Engineering(Tianjin), Tianjin University, Tianjin 300072, P. R. China
  • Received:2014-03-19 Revised:2014-05-13 Online:2014-12-01 Published:2014-05-26
  • Contact: TAO Minli E-mail:mltao@tju.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.21306133) and the Tianjin Research Program of Application Foundation and Advanced Technology, China(No.14JCYBJC22600).

Abstract:

Two sulphur-containing 4-aminonaphthalimide derivatives were investigated as Hg2+ fluorescent chemosensors. In CH3CN, both sensors present a remarkable fluorescence enhancement to Cu2+ and Fe3+, but a selective fluorescence quenching to Hg2+ among the other metal ions. A cation-π interaction between Hg2+ and the naphthalimide moiety was proposed and confirmed by the density functional theory(DFT).

Key words: 4-Aminonaphthalimide, Fluorescent chemosensor, Cation-π interaction, Hg2+, Density functional theory (DFT)