轴手性TADF材料的设计合成及其在圆偏振有机发光二极管中应用

The design and synthesis of novel chiral TADF materials and their applications in circularly polarized organic light-emitting diodes (CP-OLED) are a new research hotspot and focus in the field of organic light-emitting materials. In this project, a new strategy for the synthesis of chiral TADF materials is proposed by combining the axially chiral framework and the structure with TADF property, and a series of new axially chiral TADF materials will be designed and synthesized. At the same time, a new idea for the synthesis of TADF materials is put forward, which can achieve the synthesis of chiral TADF materials with various structures and different luminescent properties from an axially chiral TADF materials through functional group transformation reactions. As a result, a new system of TADF materials with axially chiral skeletons will thus be developed. Moreover, the TADF and CPL properties of the chiral materials will be systematically studied. Furthermore, the applications of the novel chiral TADF materials in high efficiency CP-OLED will be realized by studying the preparation, performances and CPEL properties of the OLED devices. It is believed that the implementation of this project will not only provide new research ideas and approaches for the design and synthesis of novel chiral TADF materials, but also be theoretically and practically significant for the development of TADF materials chemistry and chiral luminescent materials chemistry.

新型手性TADF材料的设计合成及其在圆偏振有机发光二极管（CP-OLED）中应用研究是当前有机发光材料领域中一个新的研究热点与重点。本申请项目拟通过把轴手性骨架与TADF结构基元有机相结合，建立手性TADF材料合成新策略，并合成几种新型轴手性TADF分子材料；同时提出TADF材料合成新思路，实现由一种轴手性TADF材料通过官能团转化反应合成结构多样的、具有不同发光性能的手性TADF新材料，由此发展一类轴手性TADF材料新体系；进一步系统研究手性分子材料的TADF性能及其CPL性质，并通过OLED器件的制备与性能及其CPEL性质研究，实现新型手性TADF材料在高效CP-OLED中的应用。相信本项目的实施不仅能够为新型手性TADF材料的设计合成及其功能与应用研究提供新的思路、开辟新的途径，而且对于TADF材料化学以及手性发光材料化学的发展也都具有重要的理论与实际意义。

新型手性TADF材料设计合成及其在圆偏振有机发光二极管(CP-OLEDs)中应用研究是当前有机发光材料领域中一个新的研究热点与重点。本项目围绕项目研究目标，通过项目实施，(1) 发展轴手性热激活延迟荧光(TADF)材料构建新方法，得到一种手性蓝色TADF材料，并实现其高效的CP-OLEDs应用。(2) 提出pi-扩展受体新思路，发展一类基于轴手性TADF材料的新体系，并获得其高效的CP-OLEDs器件。(3) 设计合成一种新型的手性给体，并构建一对用于溶液处理法的手性TADF材料及其高效的CP-OLEDs器件。(4) 发展一种手性给体-受体共聚策略，设计合成两对具有TADF性质的手性非共轭聚合物，获得首例基于手性TADF聚合物的高效CP-OLED材料及其器件。(5) 发展给体-手性pi-受体(D–pi*–A)的手性TADF材料构建新方法，得到一对新型的稳定手性TADF对映体，并实现其高效CP-OLEDs器件的构建。(6) 合成具有轴手性共轭结构的TADF聚合物，并意外发现该材料具有超长低温磷光性质，同时显示强的低温圆偏振发光性质。项目实施期间已发表SCI论文9篇，授权中国发明专利2项，毕业博士研究生1名。本项目实施不仅为手性TADF材料研究提供新的思路、开辟新的途径，而且对于圆偏振发光材料的发展也具有重要的理论与实际意义。