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[交流] 膦基型离子液体与胺基型离子液体的物理化学性质的对比研究

该论文对比研究了膦基型离子液体与胺基型离子液体的物理化学性质。
研究得出的结论是对于质子型离子液体,膦基型要比胺基型好。
已被引用8次。欢迎引用,欢迎交流。

原文可以在网上下载:
http://pubs.rsc.org/en/Content/A ... 34359b#!divAbstract

Physicochemical properties of phosphonium-based and ammonium-based protic ionic liquids
J. Mater. Chem., 2012,22, 20574-20579
DOI: 10.1039/C2JM34359B膦基型离子液体与胺基型离子液体的物理化学性质的对比研究
Chemical structures.gif摘要
Trioctylphosphonium triflate, trioctylammonium triflate, triphenylphosphonium triflate and triphenylammonium triflate were synthesized and characterized. It was found that phosphonium-based protic ionic liquids (PILs) exhibit higher thermal stability and ionic conductivity than the corresponding ammonium-based PILs, no matter whether the P and N center atoms are bonded to the electron-donating octyl groups or the electron-withdrawing phenyl groups. The ion conduction behavior of the PILs can be adequately described by the Vogel–Fulcher–Tamman (VFT) equation. The higher ionic conductivity of phosphonium-based PILs may be attributed to their weaker hydrogen bond and Coulombic interactions as well as higher carrier ion concentrations, indicated by infrared analysis, lattice potential energy estimation and VFT fitting results. Interestingly, the stronger hydrogen bonds inside trioctylammonium triflate may lead to a much decreased melting point. Furthermore, compared with electron-withdrawing phenyl, electron-donating octyl enhanced the thermal stability of the PILs.
膦基型离子液体与胺基型离子液体的物理化学性质的对比研究-1
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