The Design of New Magnetic Materials

该奖项由化学部特别项目办公室颁发。在这项研究计划中，拉赫蒂将研究含有未配对电子的模型有机分子，以了解如何设计具有先进磁性的新材料。有助于体相系统中电子之间产生高自旋相互作用的结构和分子相互作用特征将被识别，从而导致铁磁区可以用于新的磁性介质。此外，还将设计和合成具有大量未配对自旋的聚合物多自由基体系，并对其磁性进行研究。这些基本的结构和机理研究旨在开发描述分子内部和分子之间的磁性相互作用的规则，这可能使新一代块体有机铁磁体的设计成为可能。尽管还没有实现实用的材料，但最近的进展为未来合成它们带来了希望。

This award is made by the Office of Special Projects in the Chemistry Division. In this research program Lahti will investigate model organic molecules bearing unpaired electrons in order to understand how to design new materials with advanced magnetic properties. Structural and molecular interaction features which favor the production of high-spin interactions between electrons in bulk systems will be identified, leading to ferromagnetic domains which could be used in new magnetic media. In addition, polymeric polyradical systems having large numbers of unpaired spins will be designed and synthesized, and their magnetic properties will be investigated. These fundamental structural and mechanistic investigations are directed towards developing rules to describe magnetic interactions both within and between molecules which may permit the design of a new generation of bulk organic ferromagnets. Although practically useful materials have not yet been realized, recent progress holds much promise for synthesizing them in the future.