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Synthesis and characterization of MOFs constructed from 5-(benzimidazole-1-yl)isophthalic acid and highly selective fluorescence detection of Fe(iii) and Cr(vi) in water

机译:从水中的5-(苯并咪唑-1-基)中间苯二甲酸和水中Fe(III)和Cr(VI)的高选择性荧光检测的合成与表征

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In this work, four novel metal–organic frameworks [Cd(bipa)] _( n ) ( 1 ), {[Zn _(2) (bipa) _(2) ]·2C _(2) H _(5) OH} _( n ) ( 2 ), {[Co(bipa)]·C _(2) H _(5) OH} _( n ) ( 3 ), {[Ni(bipa) _(2) ]·2DMA} _( n ) ( 4 ), (H _(2) bipa = 5-(benzimidazole-1-yl)isophthalic acid) were successfully synthesized under solvothermal conditions. Complexes 1–4 were characterized by powder X-ray diffraction, elemental analysis, infrared spectroscopy and thermogravimetric analysis. Interestingly, the coordination patterns and 3D network structures of complexes 1–3 are very similar, while complex 4 is relatively unique. Complexes 1–2 exhibit potential fluorescent properties. Complex 1 can selectively and sensitively detect trace Fe( III ) and Cr( VI ) in water by fluorescence quenching detection, and the quenching mechanism is further discussed.
机译:在这项工作中,四种新型金属 - 有机框架[CD(BIPA)] _(N)(1),{[Zn _(2)(BIPA)_(2)]·2C _(2)H _(5) OH} _(n)(2),{[co(bipa)]·c _(2)h _(5)oh} _(n)(3),{[ni(bipa)_(2)]· 2DMA} _(N)(4),(H _(2)BIPA = 5-(苯并咪唑-1-基)在溶剂热条件下成功地合成了脱苯甲酸。复合物1-4的特征在于粉末X射线衍射,元素分析,红外光谱和热重分析。有趣的是,复合物1-3的协调模式和3D网络结构非常相似,而复杂的4是相对独特的。复合物1-2表现出潜在的荧光特性。复合物1可以通过荧光猝灭检测选择性和灵敏地检测水中的痕量Fe(III)和Cr(VI),并进一步讨论淬火机制。

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