Synthesis and Characterization of Organic-Based Molecular Magnetic Materials

马萨诸塞州阿默斯特大学化学系的Paul M. Lahti教授获得了有机和大分子化学计划的支持，他的工作旨在发现组装分子和离子的新方法，以制造具有可控磁性的材料。磁性材料在市场上价值数十亿美元，既用于信息存储和电子屏蔽等现有技术，也用于开发分子电子学和纳米电子学等技术。了解如何使设计的磁性能作为结构的函数是这项工作的首要目标。稳定的有机自由基将被设计成将自由基自旋组装成晶体阵列和聚合物链。在许多情况下，自由基将被设计成与具有不成对自旋的金属离子连接，以制造混合材料，将有机系统的一些最佳特性（合成可变性，晶体设计能力）与无机系统的一些最佳特性（强磁矩，结合磁性和离子导电行为的可能性）结合起来。该项目最重要的智力和科学价值是双重的：(1)发现了将分子结构和多分子组装与电子性质，特别是磁性联系起来的准则；(2)在最好的情况下，发现具有不寻常和新颖磁电子特性的新材料。有了这个奖项，有机和大分子化学项目支持了马萨诸塞大学阿姆赫斯特分校Paul M. Lahti教授的研究活动，在那里，作为该项目的一部分收集的晶体信息将被放置在出版物和晶体数据库中，使其可用于任何需要了解分子如何以受控方式在固态中组装的各种研究领域。了解电子如何在复杂的分子组合、聚合物和结晶固体中相互作用，将对任何对分子结构及其与分子水平上电子行为的关系感兴趣的人以及对材料科学技术应用感兴趣的人都有普遍的用处。该项目的研究生将受益于国际专业知识交流，并与巴西和西班牙的科学家建立直接联系，此外还将获得分子合成和电子物理方面不同寻常的技能组合。这种培训在现代技术科学市场中是极其重要的，因为项目的时间很短，工人需要灵活、适应性强和多才多艺。

Professor Paul M. Lahti, of the Department of Chemistry at the University of Massachusetts-Amherst is supported by the Organic and Macromolecular Chemistry Program for his work that aims to discover new ways to assemble molecules and ions to make materials with controlled magnetic properties. Magnetic materials are worth billions in the marketplace, both for existing technologies such as information storage and electronics shielding, and for developing technologies such as molecular electronics and nano-electronics. Understanding how to make designed magnetic properties as a function of structure is an overarching goal of this work. Stable organic radicals will be designed to assemble the radical spins into crystal arrays and polymer chains. In many cases, the radicals will be designed to link with metal ions that have unpaired spin, to make hybrid materials that combine some of the best properties of organic systems (synthetic variability, crystalline design capabilities) with those of inorganic systems (strong magnetic moments, possibilities to combine magnetic and ionic conducting behaviors). The most important intellectual and scientific merits of the project are twofold: (1) discovery of guidelines that related molecular structure and multi-molecular assemblies to electronic properties, particularly magnetism; and (2) in the best case, discovery of new materials with unusual and novel magneto-electronic properties.With this Award, the Organic and Macromolecular Chemistry Program supports the research activities of Professor Paul M. Lahti at the University of Massachusetts-Amherst where the body of crystal information gathered as part of this project will be placed into publications and crystallographic databases, making it available to any of the wide variety of research areas that have need to understand how molecules can be assembled in the solid state in a controlled manner. The understanding of how electrons interact in complicated assemblies of molecules, in polymers, and in crystalline solids will be of general use to anyone interested in molecular structure and its relationship to electronic behavior at the molecular level, as well as in materials science for technological applications. Graduate students in this project will benefit from international exchange of expertise and the development of direct ties with scientists from Brazil and Spain, in addition to gaining an unusual combination of skills in molecular synthesis and electronic physics. Such training is extremely important in the modern technoscientific marketplace, where projects have short timelines and workers need to be flexible, adaptable, and multi-talented.