| 李鹏熙,蒋宗林,陈本寿,任涛.化学通报,2018,81(8):734-738. |
| 季戊四醇衍生的咪唑鎓化合物的合成及其对阴离子的光谱响应 |
| Syntheses of Pentaerythritol Derived Imidazolium Compounds and Their Spectral Response to Anions |
| 投稿时间：2017-12-02 修订日期：2018-01-22 |
| DOI： |
| 中文关键词: 咪唑鎓 环番 阴离子识别 荧光发射光谱 |
| 英文关键词:Imidazolium, Cyclophane, Anion recognition, Fluorescence spectra |
| 基金项目:重庆市基础与前沿研究计划项目(cstc2016jcyjA0075)、四川省教育厅自然科学基金重点项目（13ZA0009）和重庆市长寿区科技计划项目（CS2017006） |
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| 中文摘要: |
| 咪唑鎓本身带有正电荷，2-位碳氢（C2-H）具有一定的酸性，是一种良好的氢键供体，能与阴离子形成氢键。因此，咪唑鎓可以识别各种无机阴离子和生物体内重要的阴离子。本文利用四（1-咪唑甲基）甲烷的独特结构，通过烷基化反应，合成了多咪唑鎓盐2、含有多功能臂的双咪唑鎓盐3和咪唑鎓环番4。采用荧光发射光谱法，研究了咪唑鎓盐2、3、4对阴离子（Cl-、Br-、I-、CH3COO-、PhCOO-、HSO4-）的光谱响应。结果表明，咪唑鎓盐2和咪唑鎓环番4a加入Cl-，荧光强度明显增强；咪唑鎓盐3a加入PhCOO-，荧光强度明显减弱；咪唑鎓盐3b和咪唑鎓环番4b加入I-，荧光强度明显增强。 |
| 英文摘要: |
| The imidazolium group is an attractive building block for anion receptors because in contributes a positive charge and relatively acidic C2-hydrogen. By the use of tetra(1-imidazolylmethyl) methane 1, we designed a series of novel imidazoliums with alkylating reagents, including imidazolium 2, the open chain bis-imidazolium salt 3, imidazolium cyclophane 4. The spectral response of compound 2, 3, 4 to anion was further determined by fluorescence spectra. The results showed that imidazolium 2 and imidazolium cyclophane 4a have a better selectivity for Cl-, bisimidazolium 3a has definite recognition ability to PhCOO-, bisimidazolium 3b and imidazolium cyclophane 4b have a better selectivity for I-. |
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