中文摘要：

以间三苯酚为原料与不同的二溴代烷反应得到不同链长的三溴中间体1a-1c,再与二茂铁甲基咪唑反应得到不同臂长的三核茂铁咪唑阴离子受体2a-2c.利用循环伏安法（CV）、差分脉冲伏安法（DPV）和核磁共振氢谱（^1H NMR）研究了受体与阴离子的结合特性.电化学滴定实验结果表明,受体2a-2c在乙腈溶液中均能很好地识别F-;核磁滴定结果表明,受体2a-2c在DMSO-d6中与阴离子通过（C—H）^＋…anion氢键作用形成1∶1络合物,F-的滴加同时对受体产生去质子化效应;阴离子识别实验结果表明,三核茂铁咪唑受体能很好地选择性识别F^-。

英文摘要：

Anions are ubiquitous in the world and play important roles in modem chemistry and life process, numerous efforts have been devoted to the design of acyclic receptors capable of selectively binding and sensing anions. Herein, several novel trinuclear ferrocene-based imidazole receptors 2a-2c were synthesized from the reactions of 1-（ferrocenylmethylene） imidazole with corresponding bromides 1a-1c. All of these receptors were characterized by ^1H NMR, ^13C NMR, MS, IR and elemental analysis. The anion binding studies were carried out by various techniques such as electrochemistry （ CV and DPV） and ^1H NMR spectroscopy. Electro- chemical behavior indicated that all the receptors displayed unique electrochemical sensing property for F^- with a remarkable phenomenon： the previous peak of the free receptor gradually diminished, a new wave at more negative potential（ AEp〉-150 mV） appeared due to the hydrogenation reaction. 1H NMR titrations demonstrated that all the receptors could bind anions through （C-H）^＋…anion hydrogen bonds forming 1 ： 1 stoichiometric complexes and had good fluoride binding ability in DMSO-d6. Addition of F-caused deprotonation effect on the receptors, indicating the receptors showed better affinity for F^-. Particularly, receptor 2b turned out to be a very good anion receptor with remarkably high preference in binding with F^-.