Temperature dependence of the electrical conductivity of imidazolium ionic liquids

被引：187

作者：

Leys, Jan ^{[1
]}

Wubbenhorst, Michael ^{[1
]}

Menon, Chirukandath Preethy ^{[1
]}

Rajesh, Ravindran ^{[1
]}

Thoen, Jan ^{[1
]}

Glorieux, Christ ^{[1
]}

Nockemann, Peter

Thijs, Ben

Binnemans, Koen

Longuemart, S.

机构：

[1] Katholieke Univ Leuven, Dept Nat & Sterrenkunde, Lab Akoestiek & Therm Fys, B-3001 Heverlee, Belgium

来源：

JOURNAL OF CHEMICAL PHYSICS | 2008年 / 128卷 / 06期

关键词：

D O I：

10.1063/1.2827462

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The electrical conductivities of 1-alkyl-3-methylimidazolium tetrafluoroborate ionic liquids and of 1-hexyl-3-methylimidazolium ionic liquids with different anions were determined in the temperature range between 123 and 393 K on the basis of dielectric measurements in the frequency range from 1 to 10(7) Hz. Most of the ionic liquids form a glass and the conductivity values obey the Vogel-Fulcher-Tammann equation. The glass transition temperatures are increasing with increasing length of the alkyl chain. The fragility is weakly dependent on the alkyl chain length but is highly sensitive to the structure of the anion. (c) 2008 American Institute of Physics.

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页数：7

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