Design, Synthesis and Evaluation of Ferroelectric Liquid Crystals with Saturated Cores

小企业创新研究（SBIR）第一阶段项目 在材料化学的一般领域和 有机金属化学和物理有机化学。 长 这项研究的一系列科学目标是增加 了解分子结构与 铁电液晶（FLC）相的物理性质， 并测试新材料的设计策略。 具体而言，本研究旨在发明新的FLC 在紫外线下具有低双折射和低吸收的材料 波长 这种FLC材料将在平板中应用。 平板显示器和用于UV光的空间光调制器（SLM）。 铁电（手性）近晶C* 液晶已被证明是 以展示高速、多态电光和显示器件 应用，特别是当结合到表面时， 稳定铁电液晶光阀。 平坦 基于SSFLC器件概念的平板显示器具有许多 潜在优势。 然而，由于高双折射和 现有材料紫外吸收大，SSFLC光阀 在一些重要的应用中存在问题。 这两 问题是由于所有已知的FLC材料都具有 液晶核心中的芳香环。 的具体目标 第一阶段的活动是设计、综合和评估新的 具有饱和芯的FLC材料。 具体核心结构 包括新的立方烷和立方烷单元 结合双环2.2.2！辛烷值单位

This Small Business Innovation Research (SBIR) Phase I project is in the general area of materials chemistry and in the subfields of organometallic chemistry and physical organic chemistry. The long range scientific goals of this research are to increase understanding of the correlation of molecular structure with physical properties of ferroelectric liquid crystal (FLC) phases, and to test strategies for the design of new materials. Specifically, this research is aimed at inventing new FLC materials having low birefringence and low absorption at UV wavelengths. Such FLC materials would have application in flat panel displays and spatial light modulators (SLMs) for UV light. Ferroelectric (chiral) smectic C* liquid crystals have been shown to exhibit high speed, multistate electro-optic and display device applications, particularly when incorporated into the surface stabilized ferroelectric liquid crystal (SSFLC) light valve. Flat panel displays based upon the SSFLC device concept have many potential advantages. However, due to the high birefringence and large UV absorption of existing materials, SSFLC light valves prove problematical in some important applications. Both of these problems are due to the fact that all known FLC materials possess aromatic rings in the liquid crystal core. The specific goal of this Phase I activity is to design, synthesize, and evaluate new FLC materials with saturated cores. The specific core structures to be explored include novel cubylcubanes, and cubane units combined with bicycloı2.2.2!octane units.