New Conductive and Magnetic Materials

新型导电磁性材料

• 批准号: 9523228
• 负责人: Brian Hoffman
• 金额: $ 30万
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-12-01 至 1999-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9523228&HistoricalAwards=false
• 关键词: New; Conductive; Magnetic; Materials

9523228 Hoffman This research program is devoted to the synthesis and characterization of novel conductive and magnetic materials, both crystalline and polymeric, that are based on metal- organic complexes. It is comprised of three components. The first project is concerned with Porphyritic Molecular Metals. Quasi one-dimensional metals based on metallophthalocyanines and related macrocycles show properties without parallel in other classes of molecular metals. The new materials will be used to study the fundamental question of electron localization associated with a lD - 3D crossover transition, and a novel M-I-M transition seen at low temperatures and high pressure. The second project deals with Magnetically Ordered Charge- Transfer Salts. The aim is to explore the mechanism for interstack ferromagnetic exchange and to examine the detailed character of the magnetically ordered state in molecular magnets. The third project is connected to Conductors and Magnets From Functionalized Porphyrazines. Breakthroughs in the synthesis of functionalized porphyrazines provide the foundation for a long-term program to prepare new classes of crystalline molecular metals and magnets derived from porphyrazine (tetraazaporphyrin)-based multi-metallic complexes, and new types of highly processable metal-linked ribbon polymers. %%% This research program is devoted to the synthesis and characterization of novel conductive and magnetic materials, both crystalline and polymeric, that are based on metal- organic complexes. It is comprised of three components: 1) studies of Porphyritic Molecular Metals; 2) examinations of Magnetically Ordered Charge-Transfer Salts; and 3) investigation of Conductors and Magnets From Functionalized Porphyrazines. The successful completion of this research will eventually result in the development of new conductors and magnets.

9523228霍夫曼 该研究项目致力于基于金属有机络合物的新型导电和磁性材料的合成和表征，包括晶体和聚合物。它由三个部分组成。第一个项目是关于斑岩分子金属。基于金属酞菁和相关大环化合物的准一维金属显示出其他类型分子金属所不具备的性质。新材料将用于研究与1D- 3D交叉转变相关的电子定位的基本问题，以及在低温和高压下观察到的新型M-I-M转变。第二个项目涉及磁有序电荷转移盐。目的是探索层间铁磁交换机制，研究分子磁体中磁有序态的细节特征。第三个项目是连接到导体和磁铁从功能化卟啉嗪。 功能化四氮杂卟啉合成的突破性进展为长期计划提供了基础，以制备新型的结晶分子金属和磁体，这些金属和磁体来自基于四氮杂卟啉的多金属配合物，以及新型的高度可加工的金属连接带状聚合物。 该研究计划致力于基于金属有机络合物的新型导电和磁性材料的合成和表征，包括结晶和聚合物。它由三个部分组成：1）卟啉分子金属的研究; 2）磁有序电荷转移盐的检查;和3）功能化卟啉嗪的导体和磁体的研究。这项研究的成功完成将最终导致新导体和磁体的开发。