Heavy Atom Radicals as Conductive and Magnetic Materials

作为导电和磁性材料的重原子自由基

• 批准号: 551-2013
• 负责人: Oakley, Richard
• 金额: $ 6.12万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=632344
• 关键词: Heavy; Atom; Radicals; Conductive; Magnetic

One of the great challenges facing information and energy transfer technologies in the next decade is the development of environmentally friendly materials possessing multifunctional behavior, that is, systems that offer a combination of two or more physical properties, e.g., optical, conductive, magnetic, that can be used together in information storage devices. In the emerging field of spin-electronics, for example, materials must display both conductive and magnetic signatures.The emerging realization that it is possible to build molecular or "organic" radicals that function in this capacity, serving jointly as single-component magnetic and electronic materials, has sparked a world-wide surge in interest in the design, synthesis and structural characterization of property-specific radicals. This highly interdisciplinary proposal, which bridges the interface between synthetic organic chemistry and condensed matter physics, addresses the creation and characterization of new molecular radical-based materials whose physical properties lie at the crossover point between a conventional metal and a magnetic insulator. As such these systems constitute a new class of highly correlated conductor, with potential applications in, for example, the development of magnetic materials, magnetoresistors and high-temperature superconductors. Their structures, and hence their magnetic and electronic performance can be easily fine-tuned either by the application of physical pressure or through molecular (chemical) modification, a feature which provides both flexibity and opportunity in the design of magnetothermal and magneto-optical switches. The potential for using these new radicals in the development of photovoltaics (solar cells) will also be explored. From an environmental perspective these organic, radical-based materials are particularly appealing, since their structures are completely metal-free.

在未来十年中，信息和能量传输技术面临的巨大挑战之一是开发具有多功能行为的环境友好材料，即提供两种或更多种物理性质的组合的系统，例如，光学的、导电的、磁性的，这些可以一起用于信息存储设备中。例如，在新兴的自旋电子学领域，材料必须同时显示出导电和磁性特征，人们逐渐认识到，有可能构建起具有这种能力的分子或“有机”基团，共同充当单组分磁性和电子材料，这引发了全世界对特定性质基团的设计、合成和结构表征的兴趣。这个高度跨学科的提议，它桥接了合成有机化学和凝聚态物理学之间的接口，解决了新的分子自由基材料的创建和表征，其物理性质位于传统金属和磁性绝缘体之间的交叉点。因此，这些系统构成了一类新的高度相关的导体，具有潜在的应用，例如，磁性材料，磁阻器和高温超导体的发展。它们的结构，因此，它们的磁性和电子性能可以很容易地通过施加物理压力或通过分子（化学）改性进行微调，这一特征在磁热开关和磁光开关的设计中提供了灵活性和机会。利用这些新的自由基的潜力，在发展中的photopolymics（太阳能电池）也将被探讨。从环境的角度来看，这些有机的自由基材料特别有吸引力，因为它们的结构完全不含金属。