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 Concept of Supported Amino Acid Ionic Liquids and Their Application in Metal Scavenging and Heterogeneous Catalysis
作者:Wen Chen、Yuanyuan Zhang、Liangbo Zhu、Jingbo Lan、Rugang Xie、Jingsong You
DOI:10.1021/ja073633n
日期:2007.11.1
heterogeneous catalysts. These materials have been investigated in the CuI-catalyzed N-arylation of nitrogen-containing heterocycles and exhibit much higher catalytic activity and a more extensive structural range of aryl and heteroaryl halides than those exhibited by free L-proline in combination with CuI both in the ionic liquid ([BMIM][BF4]) and in the corresponding homogeneous reaction conditions. The CuI-soaked
通过改性聚苯乙烯载体的咪唑鎓阳离子与 L-脯氨酸的离子对偶联,首次开发了新型负载型离子液体。这些材料在没有非固定化离子液体的帮助下显示出有效的金属清除能力(例如 CuI、Pd(OAc)2、Pd0 和 IrCl3),这依赖于与氮原子和L-脯氨酸部分的 COO- 基团、静电力和空间保护。所得金属浸渍的负载型离子液体可用作有效的多相催化剂。这些材料已在 CuI 催化的含氮杂环的 N-芳基化中进行了研究,与游离 L-脯氨酸与 CuI 结合所表现出的催化活性和芳基和杂芳基卤化物的结构范围相比,它们表现出更高的催化活性和更广泛的结构范围。离子液体 ([BMIM][BF4]) 和相应的均相反应条件。浸渍过CuI的催化剂4a-2可以循环使用至少九次而没有任何显着的活性损失。据我们所知,我们的催化过程是迄今为止报道的咪唑与芳基卤化物 N-芳基化的最有效方法之一。此外,浸Pd的材料4a-2在苯乙烯无溶剂氢化成乙苯中也显示出较高的催化活性。
Poly(ionic liquid) binders as Li<sup>+</sup> conducting mediators for enhanced electrochemical performance
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.
Synthesis and characterization of potentially polymerizable amine-derived ionic liquids bearing 4-vinylbenzyl group
have been discussed. The polymerization potential of selected isolated compounds has been briefly described on the base of DSC measurements and electron beam polymerization experiments. Mentioned experiments revealed that presented ionic liquids are prone to polymerization both in solution and pure form under temperature (DSC) or electron beam irradiation to form solidpolymeric products, at micrometer
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。