已经提出了具有4-乙烯基苄基取代基并且具有氯或双(三氟甲磺酰基)酰胺阴离子的两个胺衍生的离子液体的合成和全光谱(NMR,MS,IR),热(DSC)和离子色谱表征。1之间的依赖关系分析进行了所选质子的1 H NMR化学位移值以及阳离子和阴离子的结构。文献中以前没有描述过对所得化合物进行离子色谱分析的结果。在DSC测量和电子束聚合实验的基础上,简要介绍了所选分离出的化合物的聚合潜能。提到的实验表明,所提出的离子液体在温度(DSC)或电子束辐照下,无论是溶液形式还是纯形式,都易于聚合,形成微米级的固态聚合物。
Highly efficient aqueous phase chemoselective hydrogenation of α,β-unsaturated aldehydes catalysed by phosphine-decorated polymer immobilized IL-stabilized PdNPs
作者:S. Doherty、J. G. Knight、T. Backhouse、E. Abood、H. Alshaikh、I. J. S. Fairlamb、R. A. Bourne、T. W. Chamberlain、R. Stones
DOI:10.1039/c6gc03528k
日期:——
Phosphino-decorated polymer immobilised ionic liquidphase stabilised palladium nanoparticles (PdNP@PPh2-PIILP) and its PEGylated counterpart (PdNP@PPh2-PEGPIILP) are remarkably active and exceptionally selective catalysts for the aqueous phase hydrogenation of [small alpha],[small beta]-unsaturated aldehydes...
A series of poly(ionic liquid)s (PILs) were used as binders for lithium-ion battery (LIB) with a LiFePO4 cathode to explore their role and benefits in a model electrochemical energy storage system.
作者:Bencai Lin、Huilong Dong、Youyong Li、Zhihong Si、Fenglou Gu、Feng Yan
DOI:10.1021/cm400468u
日期:2013.5.14
The alkaline stability of imidazolium salts and imidazolium-based alkaline anion exchange membranes (AEMs) was investigated in this work. C2-substituted (with methyl, isopropyl or phenyl groups) imidazolium salts, 3-ethyl-1,2-dimethyl imidazolium bromine ([EDMIm][Br]), 3-ethyl-2-isopropyl-1-methylimidazolium bromine ([EIMIm][Br]), and 3-ethyl-1-methyl-2-phenyl-imidazolium bromine ([EMPhIm][Br]), were synthesized and characterized. The effect of the C2-substitution on the alkaline stability of imidazolium salts was investigated by H-1 and C-13 NMR spectroscopy. Compared with the C2-unsubstituted imidazolium salt, 3-ethyl-1-methylimidazolium bromine ([EMIm][Br]), the alkaline stability of C2-substituted imidazolium salts is significantly enhanced at elevated temperatures, probably due to the steric hindrance of the substituents, which protected the imidazolium cations against the hydroxide attack Moreover, the higher LUMO energies may also improve the alkaline stability of imidazolium salts. The alkaline stability of C2-substituted imidazolium salts was found to be in the order [EDMIm][Br] > [EIMIm][Br] > [EMPhIm][Br]. This work provides a feasible approach for enhancing the chemical stability of C2-substituted imidazolium salts, which has potential applications for alkaline anion-exchange membranes.