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A terbium(III)-based coordination polymer for selective and sensitive sensing of nitroaromatics and ferric ion: synthesis, crystal structure and photoluminescence properties

机译:基于铽(III)的配位聚合物,用于选择性和敏感的硝基甲酰基和铁离子:合成,晶体结构和光致发光性能

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摘要

A potent luminescent sensor for the detection of 4-nitrophenol (4-NP) and Fe3+ ion was developed based on a terbium(III)-based coordination polymer, [Tb(H2O)(5)(BTEC)][H(C5H6N2)]center dot 3H(2)O (1), which was prepared under hydrothermal condition using a benzene-1,2,4,5-tetracarboxylate (BTEC) bridging ligand. 1 possesses one-dimensional zig-zag chains decorated with carboxylate functional sites and protonated 4-aminopyridine guests located in interlayer channels. The strong green emission of 1 could be efficiently quenched by trace amounts of 4-NP through a luminescence quenching mechanism even in the presence of other aromatic compounds such as 1,2-dimethylbenzene, bromobenzene, phenol, 4-bromophenol, 4-nitrotoluene, 1,2-dinitrobenzene, nitrobenzene, 2,6-dinitrotoluene, and 2,4,6-trinitrophenol. Furthermore, 1 exhibits superior luminescence quenching behavior towards Fe3+ ion over other competing interfering metallic ions such as Cr3+, Cu2+, Na+, Mg2+, Mn2+, Co2+, Fe2+, Pb2+, Pd2+, and Zn2+. The possible luminescence quenching mechanisms were also discussed. Moreover, visual fluorescent test papers based on 1 were fabricated and could be utilized for selective detection of nitroaromatic compounds and metal ions.
机译:用于检测4-硝基苯酚(4-NP)和Fe3 +离子的有效发光传感器,基于铽(III)的配位聚合物,[Tb(H 2 O)(5)(BtEC)] [H(C5H6N2)中心点3H(2)O(1),其使用苯-1,2,4,5-四羧酸盐(BTEC)桥接配体在水热条件下制备。 1拥有一维Zag Zag链,装饰着羧酸酯功能位点,并质子化4-氨基吡啶的客人位于层间通道。即使在其他芳族化合物如1,2-二甲基苯,苯酚,4-溴苯酚,4-硝基甲苯酚,4-硝基甲酚,4-硝基甲酚,4-硝基甲酚,4-硝基甲苯1,2-二硝基苯,硝基苯,2,6-二硝乙烯和2,4,6-三硝基苯酚。此外,在其他竞争干扰金属离子中,如Cr3 +,Cu2 +,Na +,Mg2 +,Mn2 +,CO 2 +,Fe2 +,Pb2 +,PD2 +,Fe2 +,Pb2 +,Pd2 +,和Zn2 +,1表现出优异的发光淬火行为。还讨论了可能的发光淬火机制。此外,基于1的视觉荧光试验纸制备,可用于选择性检测硝基芳族化合物和金属离子。

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  • 来源
    《New Journal of Chemistry》 |2017年第21期|共8页
  • 作者单位

    Dalian Univ Technol State Key Lab Fine Chem 2 Linggong Rd Dalian 116024 Peoples R China;

    State Ocean Adm Dalian Marine Environm Monitor Cent Stn Dalian 116015 Peoples R China;

    Dalian Univ Technol State Key Lab Fine Chem 2 Linggong Rd Dalian 116024 Peoples R China;

    Dalian Univ Technol State Key Lab Fine Chem 2 Linggong Rd Dalian 116024 Peoples R China;

    Dalian Univ Technol State Key Lab Fine Chem 2 Linggong Rd Dalian 116024 Peoples R China;

    State Ocean Adm Dalian Marine Environm Monitor Cent Stn Dalian 116015 Peoples R China;

    Dalian Univ Technol State Key Lab Fine Chem 2 Linggong Rd Dalian 116024 Peoples R China;

    Dalian Univ Technol State Key Lab Fine Chem 2 Linggong Rd Dalian 116024 Peoples R China;

    Dalian Univ Technol State Key Lab Fine Chem 2 Linggong Rd Dalian 116024 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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