物理化学学报 >> 2006, Vol. 22 >> Issue (04): 456-459.doi: 10.3866/PKU.WHXB20060413

研究论文 上一篇    下一篇

核磁方法研究离子液体与丙酮的相互作用

翟翠萍;王键吉;轩小朋;汪汉卿   

  1. 中国科学院兰州化学物理研究所, 固体润滑国家重点实验室, 兰州 730000; 河南师范大学化学化工学院, 河南 新乡 453007; 中国科学院研究生院, 北京 100049
  • 收稿日期:2005-09-05 修回日期:2005-12-03 发布日期:2006-04-10
  • 通讯作者: 汪汉卿 E-mail:whqwt@yahoo.com.cn

NMR Study on the Interactions of Ionic Liquid with Acetone

ZHAI Cui-Ping;WANG Jian-Ji;XUAN Xiao-Peng;WANG Han-Qing   

  1. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China; Department of Chemistry, Henan Normal University, Xinxiang 453007, P. R. China; Graduate School of the Chinese Academy of Sciences, Beijing 100049, P. R. China
  • Received:2005-09-05 Revised:2005-12-03 Published:2006-04-10
  • Contact: WANG, Han-Qing E-mail:whqwt@yahoo.com.cn

摘要: 运用核磁共振手段, 研究了室温离子液体1-辛基-3-甲基咪唑四氟硼酸盐([C8mim][BF4])在不同比例的离子液体/丙酮混合体系中1H和13C的化学位移及13C的自旋-晶格弛豫时间(T1). 结果表明, 离子液体[C8mim][BF4]的阳离子芳环上的氢原子, 以及与氮原子直接相连的甲基和亚甲基上的氢原子都与丙酮羰基上的氧原子有相互作用, 从而减弱了离子液体阴阳离子间的强相互作用, 使离子液体的运动加快, 黏度降低.

关键词: 核磁共振, 离子液体, 丙酮, 相互作用

Abstract: 1H NMR, 13C NMR, and 13C spin-lattice relaxation time(T1) of the mixtures of room temperature ionic liquid [C8mim][BF4] and acetone with different proportions have been studied by NMR. The results indicated that the interaction between the protons of the ring, the methyl and methylene next to the nitrogen of ionic liquids and the carbonyl oxygen of acetone weakened the strong interaction between the cation and anion of the ionic liquid, thus increased the motion and decreased the viscosity of the ionic liquid.