期刊
JOURNAL OF PHYSICAL CHEMISTRY B
卷 118, 期 49, 页码 14452-14460出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp5092416
关键词
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资金
- German Research Foundation (DFG) [HE2403/8-3]
Quasielastic neutron scattering with polarized neutrons allows for an experimental separation of single-particle and collective processes, as contained in the incoherent and coherent scattering contributions. This technique was used to investigate the dynamical processes in the pyridinium-based ionic liquid 1-butylpyridinium bis(trifluoromethylsulfonyl)-imide. We observed two diffusion processes with different time scales. The slower diffusional process was present in both the coherent and the incoherent contribution, meaning that this process has at least a partial collective nature. The second faster localized process is only present in the incoherent scattering contribution. We conclude that it is a true single-particle process on a shorter time scale.
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