Molecular magnetism of metallo-supramolecular, hierarchically ordered materials containing periodically arranged metal-ligand-complexes

该项目的目的是了解金属超分子中间相的磁性。这些中间相由过渡金属离子通过与两亲分子络合的双二叔吡啶配体紧密偶联的周期排列组成。该复合材料很容易通过自组装而制备。这种方法的模块化提供了从分子到宏观长度尺度的结构和功能的广泛控制。组件的磁性可以通过超分子结构的设计来定制，特别是通过金属单元的短程有序来定制。第一个实验表明，热诱导的抗磁到顺磁的转变，很可能与两亲性中间相的结构重排和中心金属离子的配位几何结构引起的低自旋到高自旋转变有关。我们的目的是建立这些复杂的、半有序的超分子材料最精确的结构-性质关系，以便了解结构的变化对磁性的影响。由于化学和物理的密切合作，该项目成功的可能性很高。

The aim of the project is to understand the magnetic properties of metallo-supramolecular mesophases. These mesophases consist of periodic arrangements of transition metal ions tightly coupled through ditopic bis-terpyridine ligands complexed to amphiphilic molecules. The composite material is readily prepared by self-assembled. The modularity of this approach provides extensive control of structure and function from the molecular to the macroscopic length scale. The magnetic properties of the assemblies can be tailored through the design of the supramolecular architecture, in particular by the short-range order of the metallo-units. First experiments indicate a thermally induced diamagnetic to paramagnetic transition, which is most likely associated with a low to high spin transition caused by a structural rearrangement of the amphiphilic mesophase and the coordination geometry of the central metal ions. It is our purpose to develop most accurate structure-property relationships of these complex, semi-ordered supramolecular materials in order to understand how the structural changes of the architecture affect the magnetic properties. The project has a high prospect of success due to the intimate collaboration of chemistry and physics.