几种典型咪唑类离子液体的红外光谱研究

Study on Infrared Spectra of Some Typical Imidazolium-based Ionic Liquids

筛选并纯化了几种典型的咪唑类离子液体,包括1-丁基-3-甲基咪唑氯盐、1-丁基-3-甲基咪唑四氟硼酸盐和1-丁基-3-甲基咪唑六氟磷酸盐。在完成红外光谱测定的基础上,对这些离子液体的化学结构和红外吸收规律进行了系统的分析。实验结果表明,红外光谱中吸收峰的位置和形状与离子液体的结构一致,可以通过红外光谱对离子液体进行精确的定性研究。有关内容对咪唑类离子液体的研究和应用将起到一定的推动作用。

Some typical imidazolium-based ionic l iquids ,including 1-butyl-3-methylimidazolium chloride,1 -butyl - 3 - methylimidazolium tetrafluoroborate and 1 - butyl - 3 - methylimidazolium hexafluorophosphate, were purchased and purified. On the basis of infrared spectra measurements, the chemical structure and infrared absorption of these ionic liquids were analyzed in detail. Experimental results showed that the wavenumbers and shape of absorption peaks in infrared spectra were consistent with the molecular structure of ionic liquids. Infrared spectra can be used as efficientmethod in the qualitative analysis of ionic liquids. This work of imidazolium-based ionic liquids.