Intermolecular dynamics of room temperature ionic liquids having imidazolium cations
Intermolecular dynamics of room temperature ionic liquids having imidazolium cations
复制标题
具有咪唑鎓阳离子的室温离子液体的分子间动力学
DOI：
10.1016/j.molliq.2012.12.013
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发表时间：
2013
影响因子：
6
通讯作者：
H. Jun
中科院分区：
文献类型：
--
作者：
嶋田雅広;川崎仁晴;大島多美子;柳生義人;猪原武士;須田義昭;T. Uchida;H. Jun
利用光学外差检测光克尔效应 (OHD-OKE) 光谱研究了具有 1-丁基-3-甲基咪唑鎓 ([BMIM]) 阳离子和三种不同阴离子 ([BMIM][PF6]、[BMIM][BF4]、[BMIM]Br) 的室温离子液体，以找出阴离子尺寸对分子间动力学的影响。时域 OHD-OKE 信号的傅里叶变换在低于 150cm−1 的光谱中产生了宽带。由于分子间力的变化和质量的减少，随着阴离子尺寸的减小，用于拟合光谱的频率在 15、80 和 100cm−1 左右的模式都转移到更高的频率。
Room temperature ionic liquids having 1-butyl-3-methylimidazolium ([BMIM]) cations and three different anions ([BMIM][PF6], [BMIM][BF4], [BMIM]Br) were studied by using Optical Heterodyne Detected-Optical Kerr Effect (OHD-OKE) spectroscopy to find out the effect of the anion size on the intermolecular dynamics. Fourier transformation of the time-domain OHD-OKE signals yielded a broad band in the spectra below 150cm−1. The modes with frequencies around 15, 80 and 100cm−1used to fit the spectra all shifted to higher frequencies with the decrease in the anion size due to changes in the intermolecular force and the reduced mass.