酯基离子液体的合成与结构表征

Preparation and Structural Characterization of Ester-based Ionic Liquids

合成了两种典型的酯基离子液体,包括1-乙酸乙酯基-3-甲基咪唑氯盐、1-丁酸乙酯基-3-甲基咪唑溴盐。在此基础上,采用红外吸收光谱和核磁共振波谱对离子液体的组成进行了表征。根据测试结果,从微观角度对体系的化学结构进行了系统分析。研究表明,图谱中所有峰的位置及形状与离子液体的理论值基本一致,产物具有较好的纯度。上述工作加深了对酯基离子液体的认识,有助于推动相关研究和应用的进一步发展。

Two ester-based ionic liquids,including 1-ethoxycarbonylmethyl-3-methylimidazolium chloride and 1-ethoxycarbonylpropyl-3-methylimidazolium bromide were synthesized.On this basis,the composition of ionic liquids was characterized by infrared spectra and nuclear magnetic resonance spectra.Then,the chemical structure of ionic liquids was analyzed at the molecular level according to experimental results.It showed that the positions and shapes of peaks in these spectra were well fitted to the theoretical values.This work gets deeper insight into ester-based ionic liquids,which is helpful to the future research and application.