Structure-Property Relationships in Liquid Crystalline Media

液晶介质中的结构-性能关系

• 批准号: 9312634
• 负责人: Mortimer Labes
• 金额: $ 30万
• 依托单位: Temple University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-12-15 至 1997-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9312634&HistoricalAwards=false
• 关键词: Structure; Property; Relationships; Liquid; Crystalline

9312634 Labes In this project, two themes of importance to current liquid crystal research are chosen for intensive study. The first is to understand how the macroscopic periodic structures which develop during reorientation of liquid crystals affect their properties. The fundamental study of the dynamics of formation and relaxation of a liquid crystal polymer film will continue. Annealing the resulting solid films with and without tension and/or orienting fields being applied will be investigated. Both main chain and side chain liquid crystal polymers will be examined. Utilizing optical probes, the fluctuations in the orientational ordering and light scattering in these films under various processing conditions will be studied. The second theme involves the utilization of low molecular weight nematic or cholesteric liquid crystals as reaction media. The investigations set the stage for attempts at chiral synthesis in cholesteric media, for a mechanistic understanding of the reactivity control at phase transitions, and for a systematic exploration of the range of utility of liquid crystals as solvent media. ***

小行星9312634 在本计画中，我们选择了两个对目前液晶研究有重要意义的主题来进行深入的研究。 第一个是了解在液晶重取向过程中发展的宏观周期性结构如何影响它们的性质。 液晶聚合物膜的形成和弛豫动力学的基础研究将继续进行。 退火所得的固体膜与和没有张力和/或取向领域正在应用将被调查。 将检查主链和侧链液晶聚合物。 利用光学探针，在这些薄膜中的取向有序和光散射在各种工艺条件下的波动将进行研究。 第二个主题涉及利用低分子量的双或双相液晶作为反应介质。 调查设置阶段的尝试在手性合成在介质中，在相变的反应性控制的机械理解，并为系统的探索的范围内的实用程序的液晶作为溶剂介质。 ***