| 含脲苯并咪唑类离子液体的合成及阴离子识别性能 |
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| 引用本文： | 董智云,江小枝,张大卫,高国华.含脲苯并咪唑类离子液体的合成及阴离子识别性能[J].高等学校化学学报,2012,33(10):2256-2262. |
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| 作者姓名： | 董智云 江小枝 张大卫 高国华 |
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| 作者单位： | 上海市绿色化学与化工过程绿色化重点实验室,华东师范大学化学系,上海200062 |
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| 基金项目： | 国家自然科学基金，上海市重点学科建设项目 |
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| 摘 要： | 设计并合成了含脲苯并咪唑离子液体受体分子1~3, 利用紫外-可见光谱、 荧光光谱和 1H NMR滴定研究了其对F-, Cl-, Br-, I-, CH3COO-, HSO4-, H2PO4-等阴离子的识别性能. 紫外-可见光谱研究发现, 受体分子1~3可选择性地识别F-, 并形成1: 1型主客体配合物; 荧光光谱研究发现, 受体分子1~3对碱性阴离子有较好的识别作用, 主客体结合常数的顺序为H2PO4->CH3COO-≈ F->HSO4- ≈ Cl->Br- ≈ I-; 1H NMR滴定研究发现, 该类受体分子以咪唑2位CH和脲基NH与阴离子通过氢键结合, 但高浓度的F-会导致受体分子发生脱质子作用.
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| 关 键 词： | 苯并咪唑 脲基 阴离子识别 离子液体 |
| 收稿时间： | 2011-12-09 |
Synthesis of Benzimidazolium-urea Receptors and Their Anion Recognition Properties |
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| DONG Zhi-Yun
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JIANG Xiao-Zhi
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ZHANG Da-Wei
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GAO Guo-Hua.Synthesis of Benzimidazolium-urea Receptors and Their Anion Recognition Properties[J].Chemical Research In Chinese Universities,2012,33(10):2256-2262. |
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| Authors: | DONG Zhi-Yun JIANG Xiao-Zhi ZHANG Da-Wei GAO Guo-Hua |
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| Institution: | Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, Shanghai 200062, China |
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| Abstract: | Due to the fundamental roles that anions play in a wide range of chemical and biological processes, numerous efforts have been devoted to the design of receptors capable of selectively binding and sensing anions. Herein, three benzimidazolium-urea receptors were designed and synthesized. The interaction between these receptors and various anions(F-, Cl-, Br-, I-, CH3COO-, HSO4-, H2PO4-) were studied by UV-Vis spectrum, fluorescence spectrum and 1H NMR. The results demonstrate that the receptors and anions form 1:1 complex, and the receptors display a strong (C-H)+…X-, N-H…X hydrogen bonds and charge-charge interactions in anion recognition. |
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| Keywords: | Benzimidazolium Urea Anion receptor Anion recognition Ionic liquid |
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