文献类型：期刊文献

英文题名：Physicochemical Properties of Tungstate-Based Room-Temperature Ionic Liquids

作者：Qiao, Yunxiang[1];Hu, Jun[2,3];Li, Huan[1];Hua, Li[1];Hu, Yu[1];Feng, Bo[1];Hou, Zhenshan[1]

机构：[1]E China Univ Sci & Technol, Key Lab Adv Mat, Res Inst Ind Catalysis, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Adv Mat Lab, Shanghai 200237, Peoples R China;[3]E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China

年份：2010

卷号：157

期号：9

起止页码：F124

外文期刊名：JOURNAL OF THE ELECTROCHEMICAL SOCIETY

收录：;EI(收录号：20103413179661);WOS:【SCI-EXPANDED(收录号:WOS:000280348300033)】；

基金：The authors are grateful for the support from the National Natural Science Foundation of China (no. 20773037) and the Commission of Science and Technology of Shanghai Municipality, China (no. 07PJ14023). The authors also thank Professor Walter Leitner for the helpful suggestion and Dr. Nils Theyssen for assistance.

语种：英文

外文关键词：Cyclic voltammetry - Viscosity - Tungsten compounds - Hydrogen bonds

摘要：Tungstate-functionalized room-temperature ionic liquids (ILs), 1-alkyl-3-methylimidazolium tungstates [RMIm](2)[WO4] (R = C6H13 or C12H25), were synthesized and the IL's structure has been proved by NMR, Fourier transform IR, and elemental analysis. The physicochemical characteristics of the tungstate-based ILs have been determined by using methods of conductivity, viscosity, and cyclic voltammetry measurements, in comparison with those of the conventional ILs such as 1-hexyl-3-methylimidazolium methanesulfonate and 1-hexyl-3-methylimidazolium hexafluorophosphate. The influences of anions and the length of alkyl chain linked to the imidazolium ring on physicochemical properties of the ILs were examined in detail. All ILs owned higher conductivities and lower viscosities at higher temperatures. The strong intramolecular hydrogen bonds were found in the tungstate-based ILs. Cyclic voltammograms of the functionalized ILs illustrated that they were quite electrochemically stable. In general, the understanding of electrochemical properties of imidazolium ILs can facilitate their possible applications in electrochemistry. (C) 2010 The Electrochemical Society. [DOI:10.1149/1.3462993] All rights reserved.