高效率磷光材料的设计合成及其发光器件性能研究

Phosphorescent material with aggregation-induced phosphorescent emission (AIPE) property can effectively overcome the deficiencies of the solid -state light -emitting electrochemical device such as lower efficiecy , too long response time, providing the possibility for construction of efficient and non-doped organic light-emitting device. AIPE iridium(III) complexes with high luminescence efficiency and current carrier mobility will be prepared based on the fully realization that ligands have an important impact on the materials performance. To gain insight of AIPE mechanism, the influences of some factors, such as molecular structures and aggregation motif on photophyical processes of AIPE complexes will be systematically investigated by combining experimental and theoretical approach.Design and synthesis the AIPE phosphorescent material which have the 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 cells. 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 single layer,non-doped, high stability and high efficiency of the light-emitting device.l cells.

本项目利用具有聚集诱导磷光发射性质(AIPE)的磷光材料来有效地解决目前固态发光电化学池中器件效率低、响应时间过长等问题，为制备高效、非掺杂发光器件提供了新的思路。充分认识配体对配合物材料性能产生重要影响的关键因素，在兼顾 AIPE 特性的同时，获得系列高发光效率、较好载流子传输性能的 AIPE 磷光材料，期望为解决目前该类材料载流子传输性能较差、发光效率低的问题提供依据。设计、合成全新配体以及相应的配合物。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AIPE磷光材料。将其应用于固态发光电化学池器件中，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AIPE磷光材料的同时，筛选高性能的蓝光及白光材料器件。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，提高该类配合物的综合性能，实现制备单层，非掺杂，高效发光器件的目标。

利用功能化基团对金属铱配合物的配体进行化学修饰，设计合成全新的配体，构筑系列具有 AIPE 性质的磷光材料, 充分认识到材料中配体对配合物的性能具有重要影响。解决目前离子型铱配合物材料自淬灭现象严重、载流子传输能力较差等问题, 为研究AIPE磷光材料的构效关系和发光机理提供更多的选择和参考信息。提高离子型铱配合物的离子迁移率，使离子尽快在器件内部实现扩散，复合，缩短响应时间，降低启亮电压，实现高性能的固体发光电化学池器件。总结高性能器件设计、综合分析器件性能与材料内部结构的关系，制备及性能优化过程中的规律，确定AIPE磷光材料应该具有的结构、性能，采用具体的器件结构和制备工艺，可以得到更高的电致发光效率，最终设计合成AIPE磷光材料并制备相应的高性能固体发光器件，同时获得相应的成功经验及普适性规律。