Introducing new polydentate oxime ligands into design of Single Molecular Magnets

将新的多齿肟配体引入单分子磁体的设计

• 批准号: 250692075
• 负责人: Dr. Malgorzata Holynska
• 金额: --
• 依托单位: Fachbereich 15: Chemie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2016-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/250692075?language=en
• 关键词: Introducing; new; polydentate; oxime; ligands

Single Molecular Magnets (SMMs) are molecules behaving as tiny magnets that could find application in very high-density data storage. SMM behavior is observed under still low blocking temperatures. Also the energy barrier separating states of SMMs has to be increased. It was shown that these parameters are highly influenced by the overall magnetic anisotropy of the system, which needs to possess axial symmetry. Following this observation, we propose a new strategy in the design of SMMs by introducing tridentate oxime ligands. Three classes of such ligands are designed with oxime group able to act as an efficient linker between different metal ions. We show that the ligands can be used to form magnetically-anisotropic metal complexes with controllable structural motifs. Further aggregation in reaction with selected reagents should lead to materials with even more attractive magnetic properties. The products will be characterized with respect to structure (X-ray diffraction, spectroscopy) and magnetic behavior (SQUID magnetometry). Observation of enhanced SMM properties, as well as gaining new general insights into the SMM phenomenon, are expected.

单分子磁体（SMM）是一种表现为微小磁体的分子，可以在非常高密度的数据存储中找到应用。SMM行为下仍然观察到低的阻塞温度。此外，必须增加SMM的分离态的能垒。结果表明，这些参数的高度影响的整体磁各向异性的系统，这需要具有轴对称性。根据这一观察，我们提出了一种新的策略，在SMMs的设计，通过引入三齿肟配体。设计了三类具有肟基的配体，它们能够作为不同金属离子之间的有效连接基。我们表明，配体可用于形成具有可控结构图案的磁各向异性金属配合物。与选定的试剂反应中的进一步聚集应导致具有更有吸引力的磁性的材料。将对产品的结构（X射线衍射、光谱学）和磁性（SQUID磁强计）进行表征。增强SMM性能的观察，以及获得新的一般性见解SMM现象，预计。