An unusual slowdown of fast diffusion in a room temperature ionic liquid confined in mesoporous carbon

被引：41

作者：

Chathoth, S. M. ^{[1
]}

Mamontov, E. ^{[1
]}

Fulvio, P. F. ^{[2
]}

Wang, X. ^{[2
]}

Baker, G. A. ^{[2
]}

Dai, S. ^{[2
]}

Wesolowski, D. J. ^{[2
]}

机构：

[1] Oak Ridge Natl Lab, Neutron Scattering Directorate, Chem & Engn Mat Div, Oak Ridge, TN 37831 USA

[2] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA

来源：

EPL | 2013年 / 102卷 / 01期

关键词：

NEUTRON-SCATTERING; DYNAMICS;

D O I：

10.1209/0295-5075/102/16004

中图分类号：

O4 [物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Using quasielastic neutron scattering in the temperature range from 290 to 350 K, we show that the diffusive motions in a room temperature ionic liquid [H2NC(dma)(2)][BETI] become faster for a fraction of cations when the liquid is confined in a mesoporous carbon. This applies to both the localized and long-range translational diffusive motions of the highly mobile cations, although the former exhibit an unusual trend of slowing-down as the temperature is increased, until the localized diffusivity is reduced to the bulk one liquid value at a temperature of 350 K. Copyright (C) EPLA, 2013

引用

页数：5

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