Inflection Point in Pressure Dependence of Ionic Conductivity as a Fingerprint of Local Structure Formation
S. Koymeth,
B. Yao,
M. Paluch
et al.
Abstract:In this study, we employed dielectric spectroscopy to investigate the effect of temperature and pressure on the ion dynamics of phosphonium ionic liquids (ILs) differing by the length of an alkyl chain, [P 666,n ][TFSI] (n = 2, 6, 8, 12). We found that both temperature and pressure dependence of dc-conductivity (σ dc ) determined for all examined ILs herein exhibit unique characteristics, unusual for aprotic ILs. Two regions differing by ion self-organization have been identified from the derivative analysis o… Show more
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