Understanding the polarity of ionic liquids

被引：431

作者：

Ab Rani, M. A. ^{[1
]}

Brant, A. ^{[1
,2
]}

Crowhurst, L. ^{[1
]}

Dolan, A. ^{[1
,2
]}

Lui, M. ^{[1
]}

Hassan, N. H. ^{[1
]}

Hallett, J. P. ^{[1
]}

Hunt, P. A. ^{[1
]}

Niedermeyer, H. ^{[1
]}

Perez-Arlandis, J. M. ^{[1
]}

Schrems, M. ^{[1
,2
]}

Welton, T. ^{[1
]}

Wilding, R. ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Chem, London SW7 2AZ, England

[2] Univ Nat Resources & Life Sci, Christian Doppler Lab Adv Cellulose Chem & Analyt, Dept Chem, A-1190 Vienna, Austria

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2011年 / 13卷 / 37期

基金：

欧洲研究理事会;

关键词：

SOLVATOCHROMIC COMPARISON METHOD; PI-STAR SCALE; SOLVENT PROPERTIES; SOLVATION; PYRIDINIUM; SOLUTE; PROBE; PHOTOCHROMISM; REACTIVITY; BLUE;

D O I：

10.1039/c1cp21262a

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 polarities of a wide range of ionic liquids have been determined using the Kamlet-Taft empirical polarity scales alpha, beta and pi*, with the dye set Reichardt's Dye, N, N-diethyl-4-nitroaniline and 4-nitroaniline. These have been compared to measurements of these parameters with different dye sets and to different polarity scales. The results emphasise the importance of recognising the role that the nature of the solute plays in determining these scales. It is particularly noted that polarity scales based upon charged solutes can give very different values for the polarity of ionic liquids compared to those based upon neutral probes. Finally, the effects of commonplace impurities in ionic liquids are reported.

引用

页码：16831 / 16840

页数：10

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