Synthesis of Liquid Crystalline Radicals and Study of Their Molecular and Bulk Properties

液晶自由基的合成及其分子和体积性质的研究

• 批准号: 0096827
• 负责人: Piotr Kaszynski
• 金额: $ 36.77万
• 依托单位: Vanderbilt University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-06-15 至 2004-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0096827&HistoricalAwards=false
• 关键词: Synthesis; Liquid; Crystalline; Radicals; Study

The Organic and Macromolecular Chemistry Program supports Professor Piotr Kaszynski, of the Department of Chemistry at Vanderbilt University, for his work on the synthesis of liquid crystalline radicals and the study of their molecular and bulk properties. Following the design and theoretical analysis of new heterocycles containing the thioaminyl fragment as a source of unpaired spin, Professor Kaszynski will carry out the synthesis of model compounds and develop general synthetic approaches to these materials. Calamitic and discotic mesogens based on these systems will then be prepared, leading to the synthesis of polymeric liquid crystalline radicals. The properties of mesogens will be explored both in the pure state and in binary mixtures by a variety of techniques, including thermal and optical characterization, phase miscibility studies, magnetic measurements, and photovoltaic measurements.Magnetic materials are at the heart of numerous technologies. Although such materials have historically been comprised of inorganic compounds, carbon-based (organic) magnetic materials have also been discovered and offer a variety of unique advantages. With the support of the Organic and Macromolecular Chemistry Program, Professor Piotr Kaszynski, of the Department of Chemistry at Vanderbilt University, is carrying out the design and synthesis of a new class of organic magnetic materials. Through incorporation of these materials into polymeric and liquid crystalline compositions, Professor Kaszynski addresses fundamental questions regarding the nature of organic magnets and explores their potential for the preparation of new materials displaying important technological properties.

有机和大分子化学计划支持教授Piotr Kaszynski，化学系在范德比尔特大学，他的工作对液晶自由基的合成和他们的分子和本体性质的研究。在设计和理论分析含有硫代氨基片段作为未配对自旋来源的新杂环之后，Kaszynski教授将进行模型化合物的合成，并开发这些材料的一般合成方法。然后将制备基于这些系统的棒状和盘状介晶，从而合成聚合物液晶自由基。在纯态和二元混合物中，介晶的性质将通过各种技术进行探索，包括热和光学表征、相稳定性研究、磁性测量和光伏测量。磁性材料是众多技术的核心。虽然这些材料在历史上一直由无机化合物组成，但碳基（有机）磁性材料也已被发现，并提供了各种独特的优势。在有机和高分子化学计划的支持下，范德比尔特大学化学系的Piotr Kaszynski教授正在进行一类新型有机磁性材料的设计和合成。通过将这些材料纳入聚合物和液晶组合物中，Kaszynski教授解决了有关有机磁体性质的基本问题，并探索了它们在制备具有重要技术性能的新材料方面的潜力。