Molecular Organic Magnets

分子有机磁铁

• 批准号: 9200986
• 负责人: Dennis Dougherty
• 金额: $ 43.6万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-04-15 至 1995-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9200986&HistoricalAwards=false
• 关键词: Molecular; Organic; Magnets

An investigation of the effect of bridging groups on the magnetic properties of high-spin organic molecules will be conducted. Emphasis will be placed on defining the structural parameters which are necessary to maximize coupling of multiple spin centers in organic molecules. A program of targeted synthesis of specifically defined high-spin precursors will be coupled with measurements of the magnetic properties of the resultant high-spin molecular species: this will establish the type of bridging groups which most effectively couple via an intramolecular process. A highlight of the research will be the development and subsequent evaluation of magneto-optical switches which are capable of rapid changes in magnetic properties when exposed to appropriate wavelengths of light. %%% This grant from the Organic Dynamics Program supports the continuing investigations of Professor D. A. Dougherty at the California Institute of Technology. These studies will be focused toward the synthesis and design of organic molecules which exhibit magnetic properties when exposed to heat or light. The target molecules, which are effectively known as organic magnetic switches, will be evaluated for their magnetic properties by utilization of specialized equipment designed to operate at liquid helium temperatures. Advances in this field will provide the basic information required to develop organic magnets with unique optical properties for utilization in electronics applications.

我们将研究桥基对高自旋有机分子磁性的影响。重点将放在定义结构参数，这些参数是使有机分子中多个自旋中心耦合最大化所必需的。有针对性地合成特定定义的高自旋前体的计划将与所产生的高自旋分子物种的磁性测量相结合：这将建立通过分子内过程最有效地耦合的桥基类型。这项研究的一个亮点将是磁光开关的开发和随后的评估，这种开关在暴露在适当波长的光下时能够迅速改变磁性。%这笔来自有机动力学项目的拨款支持加州理工学院D.A.多尔蒂教授的继续研究。这些研究将集中在有机分子的合成和设计上，这些分子在受热或受光时表现出磁性。这些目标分子实际上被称为有机磁性开关，将通过使用专门设计的在液氦温度下运行的设备来评估它们的磁性。这一领域的进展将为开发用于电子应用的具有独特光学性能的有机磁体提供所需的基本信息。