| 人工合成受体的阴离子识别研究(Ⅰ)——乙二醛缩双芳氨基硫脲的合成及阴离子识别研究 |
| Study on the Anion Recogntion Properties of Synthesized Receptors(Ⅰ)—— Syntheis and Anion Recognition Properties of Glyoxal Bisarylthiosemicarbanzone Receptors |
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| 摘要: 设计合成了3种乙二醛缩双芳氨基硫脲受体分子。利用紫外-可见吸收光谱及1H NMR考察了其与F-、Cl-、Br-、I-、CH3COO-、C3H7COO-、HSO4-、NO3-等阴离子的作用。结果表明,该类受体分子与阴离子形成氢键配合物。加入F-、CH3COO-、C3H7COO-时,溶液颜色立刻由无色转变为深黄色,而加入其它阴离子则无变化,从而实现对这3种阴离子的裸眼检测。通过计算可知,随着苯环上取代基的变化,此3种受体分子对F-和CH3COO-的识别作用呈现有规律的变化。即o-F取代基的受体分子对阴离子的识别作用大于其他2种受体分子,且主客体间形成1∶1的配合物。1H NMR滴定及质子溶剂效应进一步证明了受体分子与阴离子之间以氢键作用方式相结合。 |
| 关键词: 缩双芳氨基硫脲 合成 阴离子识别 |
| 基金项目: |
| Abstract: Three new glyoxal bisarylthiosemicarbazone receptors were synthesized. The binding properties of the receptors with anions such as F-,Cl-,Br-,I-,CH3COO-,C3H7COO-,HSO4- and NO3- in DMSO were examed by UV-Vis and 1H NMR spectroscopy. A clear color change was observed from colorless to deep yellow upon addition of F-,CH3COO- and C3H7COO- to the solution of the three receptors in DMSO. The results showed that the three receptors had a better selectivity for F-,CH3COO- and C3H7COO-, but had no evident binding with Cl-, Br-, I-, HSO4- and NO3-. A related changes for the three receptors′ binding ability to F- and CH3COO- with the different group in the benzene ring were evident by calculation. The UV-Vis data indicated that a 1∶1 stoichiometry complex was formed between receptors and the three anions. 1H NMR titrations and solvation effect confirmed hydrogen interaction between the receptors and anions. |
| Keywords: glyoxal bisarylthiosemicarbazone synthesis anion recognition |
| 投稿时间：2005-05-08 修订日期：2005-08-16 |
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| 张有明,徐维霞,李满林,魏太保.人工合成受体的阴离子识别研究(Ⅰ)——乙二醛缩双芳氨基硫脲的合成及阴离子识别研究[J].无机化学学报,2005,21(12):1815-1820. |
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