Functionalized Rigid Conjugated Aromatic Polymers

小行星9802180 芳香族共轭刚性棒状聚合物在高性能工程材料、导电聚合物、非线性光学和激光材料等领域具有重要的应用价值。 近年来，芳香族共轭聚合物及其共混物在各种光电子技术中得到了广泛的应用。 基于共轭芳香族聚合物的电致发光器件由于其易于大面积制备、颜色选择范围广以及热稳定性等优点而受到越来越多的关注。 然而，这些材料在溶液中和在固态下与第二聚合物共混时的发光性质尚未得到充分研究。 这项研究的目的是扩大过去的工作，包括几个新的刚性芳香族聚合物。 (1)本文将深入研究芳香族刚性聚合物共混体系中发光增强和发射波长改变的新现象，并为有希望的候选者构建电致发光器件。 (2)采用非共价键接的接枝共聚物作为相容剂的方法将被用来设计新型的嵌段共聚物增强的刚性聚合物。 (3)刚性聚合物的弛豫特性将在水和有机溶剂中进行测量，并与生物系统进行比较。 %显示技术在从笔记本电脑屏幕到航空电子设备的许多应用中找到了自己的位置。 显示技术用有机材料的开发是美国与日本和欧洲激烈竞争的领域。 所提出的工作有可能为发光器件提供新的候选者。 与器件应用同时，构建分子复合材料的新方法可能导致强度高但重量轻的塑料 用于高科技用途。 在这些领域接受培训的研究生将成为各行业抢手的雇员。 ***

9802180 Okamoto Aromatic conjugated rigid rod polymers play an important role in a number of diverse technologies including high performance engineering materials, conductive polymer, nonlinear optical and laser materials. Recently aromatic conjugated polymers and their blends have found applications in various photoelectronic techniques. Electroluminescence devices based on conjugated aromatic polymers have attracted increasing attention due to easy fabrication of large areas, wide choices of colors and thermal stability. However, the luminescence properties of these materials both in solution and in the solid state when blended with a second polymer have not been fully investigated. The objective of this research is to expand past work to include several new rigid aromatic polymers. (1) The novel phenomena of luminescence enhancement and alteration of emission wavelengths in blends of aromatic rigid polymers will be studied in depth and electroluminescence devices will be constructed for promising candidates. (2) An approach using non-covalently bonded graft copolymers as compatibilizers will be adopted to design novel elastomer-reinforced rigid polymers. (3) The relaxation properties of the rigid polymers will be measured in water and organic solvents and compared with biological systems. %%% Display technology finds itself in many applications from laptop screens to aerospace electronic devices. The development of organic materials for use in display technology is an area in which the United States is in keen competition with Japan and Europe. The proposed work has the potential of offering new candidates for light emitting devices. Concurrent with device applications, the novel approach to construct molecular composites may lead to strong but light-weight plastics for high technology uses. Graduate students trained in these areas will be sought-after employees for industries. ***