新型离子型铱配合物设计合成及其固态发光电化学池性能研究

Widespread concern with the solid-state light-emitting electrochemcal cell(LECs) based on ionic Iridium complexes has demonstrated that LECs has showed a high value and potential in the information display and solid state light field.To overcome the deficiencies of the solid -state light -emitting electrochemical device such as instability , too long response time, the innovation of the project is to design and synthesize new ligands based on the fully realization that ligands have an important impact on the materials performance. Through introducing new ligands, which have considerable impact on the property of complexes molecular orbital energy level and combined with ligands modification by importing groups that have steric hindrance and electron-donating or -accepting ability to get a series of new ionic Iridium complexes, which have advantage of simple synthetic procedure, high yield, low-quenching, and correspond luminous efficiency and considerable mobility. Achieving a series of universality high-performance ionic Iridium complexes, so that applying to the solid-state light-emitting electrochemical cell. Exploring relationship of the material molecular structure, the molecular aggregation structure with electroluminescent. Comprehensive improving various performance of such complexes so that realize high stability, high efficiency of the device is the research target of this project. The project will be formed some key technology with independent intellectual property rights. The main goal of the project is to obtain the high stability and high efficiency of the solid-state light-emitting electrochemical cells.

基于离子型铱配合物的固态发光电化学池在信息显示和固体照明方面表现出很好的应用价值和潜力，受到基础科研和实际应用的广泛关注。为解决目前固态发光电化学池中器件性能不稳定、响应时间过长等问题和不足，本项目在充分认识配体对配合物材料性能产生重要影响的基础上，设计、合成全新配体以及相应的配合物。通过引入能对配合物的分子轨道能级性质产生较大影响的新配体，结合具有一定空阻效应，吸（推）电子效应基团对配体进行修饰，获得一系列合成方法简单、高产率、低淬灭、具有高发光效率和高迁移率的新型离子型铱配合物。将其应用于固态发光电化学池器件中，获得几种高性能离子型铱配合物，并归纳总结相关材料设计、器件性能优化的指导性规律。在充分丰富离子型铱配合物体系的同时，筛选高性能的蓝光及白光材料及器件。探讨材料的分子结构及分子聚集态结构与电致发光性能的关系，综合提高该类配合物的综合性能，从而实现器件的高稳定性、高效率。

为解决目前固态发光电化学池中器件性能不稳定、响应时间过长等问题和不足，本项目在充分认识配体对配合物材料性能产生重要影响的基础上，设计、合成全新配体以及相应的配合物。通过引入能对配合物的分子轨道能级性质产生较大影响的新配体，结合具有一定空阻效应，吸（推）电子效应基团对配体进行修饰，目前，我们已经获得了一系列发光颜色覆盖广、发光效率高、具有聚集诱导和压制变色等光学特性的磷光发光配合物，并成功制备了以磷光材料主体分子的高性能全磷光型器件，其各项性能均明显高于以传统荧光主体型掺杂器件，具有结构简单、低压驱动、高亮度、高效率以及低的效率滚降等特点。获得系列高性能离子型铱配合物，将其应用于固态发光电化学池器件中，并归纳总结相关材料设计、器件性能优化的指导性规律。这充分说明磷光材料自身综合性能的提升，是实现更为简单、高效EL发射最有效的途径之一，这是让有机电致发光技术更快、更全面走向实用化所做的必要的基础研究。