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

含有周期性排列的金属配体配合物的金属超分子、分级有序材料的分子磁性

• 批准号: 5429654
• 负责人: Professor Dr. Wolfgang Haase
• 金额: --
• 依托单位: Eduard Zintl-Institut
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2004
• 资助国家: 德国
• 起止时间: 2003-12-31 至 2011-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5429654?language=en
• 关键词: Molecular; magnetism; metallo; supramolecular; hierarchically

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.

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的周期性排列组成，过渡金属离子通过与两亲性分子络合的双配位双三联吡啶配体紧密耦合。该复合材料易于通过自组装制备。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。组装体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，热诱导的抗磁性顺磁过渡，这是最有可能与低到高的自旋过渡所造成的两亲性中间相和中心金属离子的配位几何结构的结构重排。我们的目的是开发这些复杂的半有序超分子材料的最准确的结构-性质关系，以了解架构的结构变化如何影响磁性。由于化学和物理的密切合作，该项目具有很高的成功前景。