Chinese Journal of Applied Chemistry ›› 2018, Vol. 35 ›› Issue (11): 1372-1377.DOI: 10.11944/j.issn.1000-0518.2018.11.170464

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Synthesis and Fluorescence Properties of a Zinc Complex Based on the One-Dimensional Double-Helical Chains

LIN Hongyan(),TIAN Yuan,WANG Qinglin,ZENG Ling,LIU Guocheng,ZHAO Yanyu   

  1. College of Chemistry and Chemical Engineering,Bohai University,Jinzhou,Liaoning 121013,China
  • Received:2017-12-25 Accepted:2018-03-09 Published:2018-10-31 Online:2018-10-31
  • Contact: LIN Hongyan
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21501013, No.21401010)

Abstract:

A zinc complex based on the one-dimensional(1D) double-helical chains was hydrothermally self-assembled by selecting the organic ligand N,N'-bis(3-pyridyl)malonamide (3-bpma), 1,4-phenylenediacetic acid(H2pda) and zinc nitrate, [Zn(3-bpma)(pda)]n(1), then structurally characterized by infrared spectroscopy(IR), element analysis, thermogravimetry(TG) and X-ray single-crystal diffraction. The single-crystal structural analysis reveals that this zinc complex is an orthorhombic system with space group Pna21, its cell parameters are:a=1.62512(11) nm, b=1.15947(8) nm, c=1.19282(8) nm, α=90°, β=90°, γ=90°, V=2.2476(3) nm3, Mr=513.80, Dc=1.518 g/cm3, Z=4, F(000)=1056, R1=0.0381, wR2=0.0669. The zinc ions are bridged by two kinds of ligands 3-bpma and pda to form a 1D double-helical chain, then the adjacent chains are extended into the 3D supramolecular network through the hydrogen bonding interactions. The title zinc complex shows a strong fluorescence emission characteristic. Moreover, this complex possesses remarkable fluorescent sensing behaviors for organic solvent molecules and metal ions, which may be a potential fluorescent sensing material for detecting nitrobenzene. CCDC:1811967.

Key words: hydrothermal synthesis, zinc complex, helical structure, fluorescent property, fluorescent sensing