Kaliner Maria, Rupp Alexander, Krossing Ingo, Strassner Thomas
Physikalische Organische Chemie, Technische Universität Dresden, 01169, Dresden, Germany.
Institut für Anorganische und Analytische Chemie und, Freiburger Materialforschungszentrum FMF, Albert-Ludwigs-Universität Freiburg, 79104, Freiburg im Breisgau, Germany.
Chemistry. 2016 Jul 11;22(29):10044-9. doi: 10.1002/chem.201601063. Epub 2016 Jun 22.
Weakly coordinating borate or aluminate anions have recently been shown to yield interesting properties of the resulting ionic liquids (ILs). The same is true for large phenyl-substituted imidazolium cations, which can be tuned by the choice, position, or number of substituents on the aromatic ring. We were therefore interested to combine these aryl alkyl imidazolium cations with the weakly coordinating tetrakis((1,1,1,3,3,3-hexafluoropropan-2-yl)oxy)borate B(hfip)4 anions to study the physical properties and viscosities of these ionic liquids. Despite the large size and high molecular weight of these readily available ILs, they are liquid at room temperature and show remarkably low glass transition points and relatively high decomposition temperatures.
最近研究表明，弱配位的硼酸根或铝酸根阴离子能使生成的离子液体（ILs）具有有趣的性质。对于大的苯基取代咪唑阳离子来说也是如此，其可通过芳环上取代基的选择、位置或数量进行调节。因此，我们有兴趣将这些芳基烷基咪唑阳离子与弱配位的四（（1,1,1,3,3,3 - 六氟丙 - 2 - 基）氧基）硼酸根B（hfip）4阴离子相结合，以研究这些离子液体的物理性质和粘度。尽管这些易于获得的离子液体尺寸大、分子量高，但它们在室温下呈液态，玻璃化转变温度极低，分解温度相对较高。
