Low-Energy Optical Spectroscopy as a Probe of Structure-Property Relations in Organic Solids

低能光谱学作为有机固体结构-性能关系的探针

• 批准号: 0600089
• 负责人: Janice Musfeldt
• 金额: $ 36万
• 依托单位: University of Tennessee Knoxville
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-05-15 至 2010-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0600089&HistoricalAwards=false
• 关键词: Low; Energy; Optical; Spectroscopy; Probe

Non-Technical AbstractThis work will help develop a better and more detailed understanding of the basic physics and chemistry of novel organic materials. Such materials include superconductors and carbon cage and tube structures, which are at the cutting edge of work in nanomaterials. Spectroscopic techniques will be used to study these systems in the presence of strong magnetic fields, variable temperature, and chemical modification, with the goal of elucidating how the physical properties of the materials relate to their chemical composition and structure. Developing this type of detailed understanding is critical to being able to engineer new materials with specifically tailored properties for use in electronics and many other areas. This work cuts across the boundaries of chemistry, physics, materials science, and engineering, and involves collaborations with many national and international scientists. The scientific breadth provides the students and postdoctoral research associates participating in this work with a unique and important educational experience as they carry out the research, publish it, and present it at a variety of national and international meetings, preparing them for future employment in industry, government laboratories, and academics. Research results will also be incorporated into the graduate and undergraduate classrooms at various levels, as examples and case studies that directly connect the basic concepts the students are studying with developments in advanced materials. The Chemistry Division and the Division of Materials Research are supporting this project.Technical AbstractThe proposed work is part of a multifaceted but strongly integrated program in the spectroscopy of complex organic materials. It concentrates on understanding physical and chemical tuning of local structure and functionality in model organic materials including layered superconductors, small carbon cage and endohedral fullerenes, molecular ladder-like compounds, and carbon nanotubes. The goal is to connect the rich features in the low-energy spectral response with local and spatial aspects of charge, magnetism, and structure. By studying these effects in a variety of model materials, a better understanding of bulk properties such as superconductivity, negative thermal expansion, and doping-induced metal-insulator transitions as well as microscopic aspects of symmetry-breaking, charge-ordering, and guest-host interactions in complex organic solids will emerge. The field of advanced organic solids cuts across the disciplinary boundaries of chemistry, physics, materials science, and engineering. At the same time, the proposed work will advance the education of young people in the area of materials spectroscopy. Such human resource development is one of the most important goals of this work.

非技术抽象这项工作将有助于对新型有机材料的基本物理和化学反应有更好，更详细的了解。这些材料包括超导体和碳笼和管结构，它们位于纳米材料的最前沿。 光谱技术将用于在存在强磁场，可变温度和化学修饰的情况下研究这些系统，以阐明材料的物理性质与其化学成分和结构之间的关系。 开发这种详细的理解对于能够使用专门定制的电子和许多其他领域的特定特性来设计新材料至关重要。 这项工作跨越了化学，物理，材料科学和工程的界限，并涉及与许多国家和国际科学家的合作。 科学广度为学生和博士后研究伙伴提供了参与这项工作的独特而重要的教育经验，他们在进行研究，将其发布并在各种国家和国际会议上展示，并为他们做好准备，以准备未来在工业，政府实验室和学术界中就业。 研究结果还将在各个层面的研究生和本科教室中纳入研究生和案例研究，这些案例和案例研究直接连接了学生正在研究高级材料的发展的基本概念。化学划分和材料研究部正在支持该项目。技术摘要拟议的工作是复杂有机材料光谱中多方面但强大的计划的一部分。它集中于理解模型有机材料中局部结构和功能的物理和化学调整，包括分层超导体，小碳笼和内膜富勒伦，分子梯子样化合物和碳纳米管。目的是将低能光谱响应中的丰富特征与电荷，磁性和结构的局部和空间方面联系起来。通过在各种模型材料中研究这些效果，可以更好地理解诸如超导性，负热膨胀和掺杂诱导的金属绝缘体过渡以及对称性，电荷订购和宾客 - 霍斯特相互作用的显微镜​​方面，以及复杂有机固体中的客人 - 霍斯特相互作用的微观方面。高级有机固体的领域在化学，物理，材料科学和工程学的学科边界上切开。同时，拟议的工作将推动材料光谱领域的年轻人的教育。这种人力资源开发是这项工作最重要的目标之一。