Neutron Scattering Science Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.
Chemphyschem. 2011 Apr 4;12(5):944-50. doi: 10.1002/cphc.201001017. Epub 2011 Mar 7.
Quasielastic neutron scattering is used to probe the microscopic diffusion dynamics of the hydrogen-bearing cations of two different silver complex-derived room-temperature ionic liquids, [Ag(propylamine)(2)(+)][Tf(2)N(-)] (Tf=trifluoromethanesulfonyl) and [Ag(1-pentene)(+)][Tf(2)N(-)]. In the temperature range from 300 to 340 K, analysis of the scattering momentum transfer dependence of the data provides evidence for three distinct diffusion components. The slowest component describes the long-range cationic translational diffusion. A possible link between the microscopic diffusion parameters and the structural features of the cations comprising these two ionic liquids is discussed.
准弹性中子散射被用来探测两种不同的银络合室温离子液体中含氢阳离子的微观扩散动力学，[Ag(丙胺)(2)(+)] [Tf(2)N(-)]（Tf=三氟甲磺酸根）和[Ag(1-戊烯)(+)] [Tf(2)N(-)]。在 300 到 340 K 的温度范围内，对散射动量传递依赖数据的分析提供了三个不同扩散分量的证据。最慢的分量描述了长程阳离子的平移扩散。讨论了微观扩散参数与构成这两种离子液体的阳离子结构特征之间的可能联系。
