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Two copper (II) complexes based on different copper salts, 1,3-benzenedicarboxylic acid and 1,4-di(imidazolidin-1-yl) benzene and their fluorescence recognition to nitrobenzene derivatives
Journal of Solid State Chemistry ( IF 3.2 ) Pub Date : 2020-03-27 , DOI: 10.1016/j.jssc.2020.121334
Yuqing Wen , Dapeng Shi , Zhongyu Duan

Hydrothermal reactions of 1,3-benzenedicarboxylic acid (H2bdc) and 1,4-di(imidazolidin-1-yl)benzene (1,4-dimb) with different copper salts (cupric nitrate and cupric sulfate) produce two complexes, {[Cu(bdc)(1,4-dimb)]·(DMA)}n (1) and {[Cu4(bdc)3(1,4-dimb)4](O2)(H2O)8(OH)2}n (2) (DMA = dimethylacetamide), and their structures and properties are explored by single crystal X-ray crystallography, elemental analysis, IR spectroscopy, powder X-ray diffraction, thermal gravimetric analysis and fluorescence spectroscopy. Both 1 and 2 are two-dimensional layered structures crystallized from the monoclinic systems, P21/m space group. Fluorescence studies show that both complexes exhibit strong fluorescent emissions and can be used to identify the nitrobenzene derivatives. In particular, the quenching rate of 2 by 2, 4, 6-trinitrotoluene is close to 100% and the quenching constant is as high as 3.40 × 104 M−1.



中文翻译:

基于不同铜盐,1,3-苯二甲酸和1,4-二(咪唑啉丁-1-基)苯的两种铜(II)配合物及其对硝基苯衍生物的荧光识别

1,3-苯二甲酸(H 2 bdc)和1,4-二(咪唑啉-1-基)苯(1,4-dimb)与不同的铜盐(硝酸铜和硫酸铜)发生水热反应,生成两种络合物, {[Cu(bdc)(1,4-dimb)]·(DMA)} n1)和{[Cu 4(bdc)3(1,4-dimb)4 ](O 2)(H 2 O)8(OH)2 } n2)(DMA =二甲基乙酰胺),并通过单晶X射线晶体学,元素分析,IR光谱,粉末X射线衍射,热重分析和荧光光谱研究了它们的结构和性质。都图1和图2是从单斜晶系P 2 1 / m空间群结晶的二维分层结构。荧光研究表明,两种配合物均具有较强的荧光发射能力,可用于鉴定硝基苯衍生物。特别地,2 ×2、4、6-三硝基甲苯的猝灭率接近100%,猝灭常数高达3.40×10 4  M -1

更新日期:2020-03-27
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