Thermal, rheological, and ion-transport properties of phosphonium-based ionic liquids

Matthew D. Green, Christian Schreiner, Timothy Edward Long*

*この研究の対応する著者

研究成果: Article査読

43 被引用数 (Scopus)

抄録

Phosphonium-based ionic liquids with varying counteranions from commercially available ionic liquid precursors enabled tunable viscosity, ionic conductivity, and thermal stability. Thermogravimetric analysis revealed a relationship between thermal stability and anion composition where anions with lower basicity remained stable to higher temperatures. Determination of glass transition temperatures and melting temperatures using differential scanning calorimetry revealed supercooling, crystallization, and dependence on anion composition. Rheological and ionic conductivity measurements determined the temperature-dependence of the viscosity and ionic conductivity of the phosphonium-based ionic liquids. Arrhenius analyses of conductivity and viscosity provided activation energies, which showed a decrease toward larger, more delocalized anions. An assessment according to the Walden plot displayed their efficacy relative to other ionic liquids.

本文言語English
ページ(範囲)13829-13835
ページ数7
ジャーナルJournal of Physical Chemistry A
115
47
DOI
出版ステータスPublished - 2011 12月 1
外部発表はい

ASJC Scopus subject areas

  • 物理化学および理論化学

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