Ionic liquid mesophases and their structural and physiochemical properties

本项目主要研究新型含金属离子液晶的设计与表征。通过在离子液体中掺入金属离子和介生基团，离子液体有可能从溶剂转变为高级功能材料。离子液晶的阳离子部分将包含一个N，N-二烷基吡咯烷单元，由于其高热稳定性和电化学稳定性，这是更可取的。这允许具有还原性或氧化性的金属碎片的稳定。阴离子部分是d-嵌段和f-嵌段元素的盐金属酸盐配合物。d嵌段配合物的例子包括经典的四氯金属酸盐配合物，如[MCl4]2-，其中M = Co, Ni, Cu, Zn, Pd， Pt或Cd，但也有更奇特的配合物，如[ReCl6]2-， [Re2Cl8]2-, [Re2Cl9]-， [OsCl6]2-和[IrCl6]2-。f嵌段配合物的例子有[LnCl6]3-（其中Ln =镧系元素）和[UO2Cl4]2-。本课题的研究课题是固相和中间相配合物的结构测定，以及物理化学性质（发光、磁性、氧化还原行为）的探索。为了建立结构-性能关系，将实验和理论方法相结合。

This project is focused on the design and characterization of new metal-containing ionic liquid crystals. By incorporation of metal ions and mesogenic groups into ionic liquids, it is possible to transform ionic liquids from solvents to advanced functional materials. The cationic part of the ionic liquid crystals will contain a N,N-dialkylpyrrolidinium unit, which is preferable because of its high thermal and electrochemical stability. This allows the stabilization of metal fragments with reducing or oxidizing properties. The anionic part will be halometalate complexes of d-block and f-block elements. Examples of d-block complexes include classical tetrachlorometalate complexes like [MCl4]2-, where M = Co, Ni, Cu, Zn, Pd, Pt, or Cd, but also more exotic complexes like [ReCl6]2-, [Re2Cl8]2-, [Re2Cl9]-, [OsCl6]2- and [IrCl6]2-. Examples of f-block complexes are [LnCl6]3- (where Ln = lanthanide) and [UO2Cl4]2-. Research topics of this project are the structural determination of the complexes in the solid phase and in the mesophase, as well as exploration of the physico-chemical properties (luminescence, magnetism, redox behavior). In order to establish the structure-properties relationship, experimental and theoretical approaches will be combined.