Dipartimento di Chimica, Materiali e Ingegneria Chimica G. Natta, Politecnico di Milano, Via L. Mancinelli, 7, 20131 Milano, Italy.
Phys Chem Chem Phys. 2010 Feb 28;12(8):1784-92. doi: 10.1039/b921816e. Epub 2010 Jan 18.
Ionic liquids offer the opportunity of tailoring their properties by changing the chemical structure of the cation and anion. Blending of two or more liquids adds a further dimension to this "chemical space". Here we present the results of a study of three binary and one ternary mixture of the ionic liquids formed by the N-butyl-N-methylpyrrolidinium cation with bis(trifluoromethanesulfonyl) imide, bis(pentafluoroethanesulfonyl) imide and (trifluoromethanesulfonyl)(nonafluorobutanesulfonyl) imide. We have collected viscosity and NMR-based data on ionxion correlations (NOE) and diffusion (DOSY). We also attempt to establish a quantitative correlation between mixture and the corresponding pure liquid properties. We find that the binary mixture containing the two very different anions has an intriguing and somewhat anomalous behaviour.
离子液体可以通过改变阳离子和阴离子的化学结构来调整其性质。两种或更多种液体的混合为这种“化学空间”增加了另一个维度。在这里，我们介绍了由 N-丁基-N-甲基吡咯烷阳离子与双（三氟甲磺酰基）亚胺、双（五氟乙烷磺酰基）亚胺和（三氟甲磺酰基）（全氟丁烷磺酰基）亚胺形成的三种二元和一种三元离子液体混合物的研究结果。我们收集了关于离子相互作用（NOE）和扩散（DOSY）的粘度和基于 NMR 的数据。我们还试图在混合物和相应的纯液体性质之间建立定量相关性。我们发现，含有两种非常不同阴离子的二元混合物具有有趣且有些异常的行为。
