Multifunctional Soft Materials from and with Borate Ionic Liquids and Lanthanides

该联合研究项目的目标是通过一组不同的硼酸盐离子液体（IL）与镧系元素和第3族金属离子的组合来合成新型软材料。因此，该项目旨在结合离子液体组分的性质，重点是硼酸根阴离子和Ln金属离子。特别是不同结构单元的组合将有助于实现这些材料的潜在多功能性的性质，例如可调发光、离子特性、疏水性和电化学稳定性。在第一个项目期间，已经成功地进行了发光和疏水性设置的研究，并且已经用螺硼酸盐和氰基硼酸盐离子液体合成了50多个新的含有镧系离子和离子液体组分的配位化合物、聚合物和金属有机框架（MOFs）。它们表现出显着的发光性能，显示出显着的硼酸根阴离子的影响。基于在各自的IL中以及与IL的反应的强大的有益影响，在新的时期将使用一套扩大的、经过仔细调整的IL。因此，通过在离子液体中溶解金属和金属盐以及通过形成新的固体产物的异质化的成功的双重路径的均质化将得到解决和进一步发展。选择的反应也将在添加剂如连接剂的存在下进行，以改善金属-有机框架与硼酸盐离子液体组的可及性。将研究新化合物的电化学性能（电化学稳定性，导电性和极化率）和选定的材料性能（化学稳定性和热性能，粘度和潜在的孔隙率）。高效可调发光及其机理的研究将在高效增感和色度控制以及其他化学物种对发光本身的影响等方面得到进一步发展。后者将被用来调查传感的可能性的基础上与这些物种的发光的新的软材料的相互作用的依赖。因此，也将实现初始应用的远目标。

The objective of this joint research project is the synthesis of novel soft materials by a combination of a distinct set of borate ionic liquids (ILs) with lanthanide and group 3 metal ions. Thereby, the project aims at a combination of properties originating from the components of the ILs, with a focus on the borate anions, and Ln metal ions. Especially the combination of the different building blocks will help to implement properties such as a tuneable luminescence, ionic character, hydrophobicity, and electrochemical stability for a potential multifunctionality of these materials. Studies on the luminescence and the setting of hydrophobicity have been carried out successfully in the first project period and more than 50 new coordination compounds, polymers, and metal-organic frameworks (MOFs) that contain lanthanide ions and components of the ILs have been synthesized with and from spiro-borate and cyanoborate ILs. They exhibit remarkable luminescence properties showing a distinct influence of the borate anions. Based on the strong beneficial impact of reactions in and with the respective ILs, an enlarged and carefully adjusted set of ILs will be used in the new period. Thereby, the successful dual path of homogenization by dissolution of metal and metal salts in the ILs as well as heterogenization by formation of novel solid products will be addressed and developed further. Selected reactions will also be carried out in the presence of additives like linkers to improve the accessibility of metal-organic frameworks with the set of borate ILs. The new compounds will be investigated concerning their electrochemical properties (electrochemical stability, conductivity, and polarizability) and selected materials properties (chemical stability and thermal properties, viscosity, and potential porosity). The study on efficient and tuneable luminescence and the respective mechanisms will be developed further on efficient sensitization and chromaticity control and the influence of other chemical species on the luminescence itself. The latter will be used to investigate sensing possibilities based on a dependence of the interaction with these species on the luminescence of the new soft materials. Thereby, also the far goal of the initial application shall be achieved.