Fraunhofer Institute for Applied Polymer Research, Geiselberg Str. 69, 14476 Potsdam, Germany.
Molecules. 2012 May 31;17(6):6593-604. doi: 10.3390/molecules17066593.
Acrylate functionalized ionic liquids based on tetraalkylammonium salts with terminal acrylates- and methylacrylates were synthesized. Melting points and ionic conductivity of twenty compounds in six groups were determined. Within one group the effect of three different counterions was investigated and discussed. The groups differ in cationic structure elements because of their functional groups such as acrylate and methacrylate, alkyl residues at the nitrogen and number of quaternary ammonium atoms within the organic cation. The effect of these cationic structure elements has been examined concerning the compiled parameters with a view to qualifying them as components for solid state electrolytes. The newly synthesized ionic liquids were characterized by NMR and FTIR analysis. The exchange of halide ions like bromide as counter ions to weakly coordinating [PF₆]⁻, [OTf]⁻ or [TFSI]⁻ reduces the melting points significantly and leads to an ion conductivity of about 10⁻⁴ S/cm at room temperature. In the case of the dicationic ionic liquid, an ion conductivity of about 10⁻³ S/cm was observed.
基于末端丙烯酸盐和甲基丙烯酸盐的四烷基铵盐的丙烯酸盐功能化离子液体被合成。20 种化合物在 6 组中的熔点和离子电导率被测定。在一组中，研究并讨论了三种不同抗衡离子的影响。这些基团在阳离子结构元素上存在差异，因为它们具有不同的官能团，如丙烯酸盐和甲基丙烯酸盐、氮上的烷基残留物以及有机阳离子中的季铵原子数量。考虑到将它们作为固态电解质的组成部分进行定性，研究了这些阳离子结构元素对所编参数的影响。通过 NMR 和 FTIR 分析对新合成的离子液体进行了表征。用弱配位的[PF₆]⁻、[OTf]⁻或[TFSI]⁻代替卤化物离子（如溴化物）作为抗衡离子，可显著降低熔点，并在室温下导致约 10⁻⁴ S/cm 的离子电导率。在二价离子液体的情况下，观察到约 10⁻³ S/cm 的离子电导率。
