中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Polyfluoroalkyl, polyethylene glycol, 1,4-bismethylenebenzene or 1,4-bismethylene-2,3,5,6-tetrafluorobenzene bridged functionalized dicationic ionic liquids: Synthesis and properties as high temperature lubricants

文献类型:期刊论文

作者Ceng Z(曾卓) ; Benjamin S. Phillips ; Xiao JC(肖吉昌) ; Jean'ne M. Shreeve
刊名Chem. Mat.
出版日期2008
卷号20期号:8页码:2719-2726
ISSN号0897-4756
其他题名多氟烷基、缩乙二醇、对苯二亚甲基、2,3,5,6-四氟-1,4-对苯二亚甲基桥连的双阳离子类离子液体的合成及高稳润滑性能
通讯作者Jean'ne M. Shreeve
英文摘要A new class of geminal dicationic ionic liquids was formed with a bridging moiety, such as a polyalkyl ether, polyfluoroalkyl, 1,4-bismethylenebenzene, or 1,4-bismethylene-2,3,5,6-tetrafluorobenzene link, between alkyl-substituted imidazolium rings. Their properties were modified by varying the linker chains and/or alkyl substituents on the imidazolium ring. The polyfluoroalkyl bridged dicationic ionic liquids exhibit the highest densities and viscosities. Although melting points are directly proportional to the length of the alkyl substituent, the densities decrease concomitantly. With 1,4-bismethylene-2,3,5,6-tetrafluorobenzene as the linking chain and with longer alkyl substituents on the imidazolium rings, the nonpolar character of the ionic liquid greatly increases, e.g., the solubilities in toluene of dicationic ionic liquids 36 and 37, where the ring substituents are C10H21 and C14H29, increase markedly. Some of the salts exhibit higher conductivities than an equimolar tetrabutylammonium iodide solution in acetonitrile/ toluene. These new ionic liquids (except with PF6- as anion) display outstanding tribological properties in temperature ramp tests by performing very well at 300 degrees C, thus meeting one criterion for high-temperature lubricants.
学科主题氟化学
收录类别SCI
原文出处http://dx.doi.org/10.1021/cm703693r
语种英语
WOS记录号WOS:000255019300020
公开日期2013-04-11
源URL[http://202.127.28.38/handle/331003/25231]  
专题上海有机化学研究所_中科院有机氟化学重点实验室
推荐引用方式
GB/T 7714
Ceng Z,Benjamin S. Phillips,Xiao JC,et al. Polyfluoroalkyl, polyethylene glycol, 1,4-bismethylenebenzene or 1,4-bismethylene-2,3,5,6-tetrafluorobenzene bridged functionalized dicationic ionic liquids: Synthesis and properties as high temperature lubricants[J]. Chem. Mat.,2008,20(8):2719-2726.
APA 曾卓,Benjamin S. Phillips,肖吉昌,&Jean'ne M. Shreeve.(2008).Polyfluoroalkyl, polyethylene glycol, 1,4-bismethylenebenzene or 1,4-bismethylene-2,3,5,6-tetrafluorobenzene bridged functionalized dicationic ionic liquids: Synthesis and properties as high temperature lubricants.Chem. Mat.,20(8),2719-2726.
MLA 曾卓,et al."Polyfluoroalkyl, polyethylene glycol, 1,4-bismethylenebenzene or 1,4-bismethylene-2,3,5,6-tetrafluorobenzene bridged functionalized dicationic ionic liquids: Synthesis and properties as high temperature lubricants".Chem. Mat. 20.8(2008):2719-2726.

入库方式: OAI收割

来源:上海有机化学研究所

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