新型Cd(Ⅱ)-MOF的合成及对4-硝基苯胺的高效识别
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摘要
采用新型1,3,5-三(1H-苯并[d]咪唑-2-基)苯(TBB)配体及2,5-二羟基对苯二甲酸(H2dhtp)线性配体,以Cd (Ⅱ)离子为中心节点,构筑了具有新型拓扑结构(unj)的手性金属-有机框架材料[Cd(TBB)(dhtp)](配合物1).该配合物具有较强的光致发光性能,可分散在溶液中荧光检测硝基配合物等污染物.其中,4-硝基苯胺对配合物1具有高效的荧光猝灭能力,检测限可低至0. 145 mg/L,并具有较好的选择性.
1,3,5-Tri( 1 H-benzo[d]imidazol-2-yl) benzene( TBB) and( 2,5-dihydroxyterephthalic acid)( H2 dhtp) were used as linear ligands and Cd( Ⅱ) was used as the central node to construct a new type of chiral 3 D metal-organic framework materials Cd( TBB)( dhtp)( 1). The strong fluorescence emission property of complex 1 and the π-π interaction of the TBB ligand made it possible to detect nitro compounds and other pollutants by fluorescence. A further study showed that 4-nitroaniline had a high quenching ability for complex1 and the limit of detection could be as low as 0. 145 mg/L,indicating that complex 1 could be used as a highly efficient and highly selective detection probe for p-nitroaniline.
1,3,5-Tri( 1 H-benzo[d]imidazol-2-yl) benzene( TBB) and( 2,5-dihydroxyterephthalic acid)( H2 dhtp) were used as linear ligands and Cd( Ⅱ) was used as the central node to construct a new type of chiral 3 D metal-organic framework materials Cd( TBB)( dhtp)( 1). The strong fluorescence emission property of complex 1 and the π-π interaction of the TBB ligand made it possible to detect nitro compounds and other pollutants by fluorescence. A further study showed that 4-nitroaniline had a high quenching ability for complex1 and the limit of detection could be as low as 0. 145 mg/L,indicating that complex 1 could be used as a highly efficient and highly selective detection probe for p-nitroaniline.
引文
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