Molecular Dynamics, Structure, and Phase Transitions in Liquid-Crystalline Media: ESR Studies

液晶介质中的分子动力学、结构和相变：ESR 研究

• 批准号: 9210638
• 负责人: Jack Freed
• 金额: --
• 依托单位: Cornell University
• 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: 1992-09-01 至 1996-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9210638&HistoricalAwards=false
• 关键词: Molecular; Dynamics; Structure; Phase; Transitions

The objectives of this research are to explore the dynamic molecular structure of liquid crystals by using two-dimensional Fourier transform ESR and high-field ESR techniques. Detailed relaxation data are acquired to infer both the long-time and short- time molecular motions. The description of molecular motions in liquid crystals are enhanced by studies of transnational diffusion of the probes both at the molecular level and the macroscopic level. These studies are of special value for characterizing structure and dynamics of ordered systems.

本研究的目的是利用二维傅里叶变换ESR和高场ESR技术探索液晶的动态分子结构。 获取详细的弛豫数据以推断长时间和短时分子运动。 通过在分子水平和宏观水平上对探针跨国扩散的研究，增强了对液晶中分子运动的描述。 这些研究对于表征有序系统的结构和动力学具有特殊价值。