基于热活化敏化圆偏振发光机制的高效手性发光材料与器件

发展新型手性分子材料和电致圆偏振发光新策略，并应用于高性能有机圆偏振发光二极管（CP-OLED）的构筑，是目前手性发光材料领域中的研究热点和难点。本申请项目拟围绕新型主体和新型客体材料的设计合成，并基于热活化敏化圆偏振发光新策略构筑高性能CP-OLED器件。具体如下：1）设计合成兼具高量子产率、高glum值的新型手性螺烯衍生物，发展一类高性能器件的客体分子材料；2）提出手性TADF分子材料的合成新思路，构筑具有给-受体分离结构的新型手性TADF分子材料，发展一类器件主体材料的新体系；3）系统地研究热活化敏化圆偏振发光新策略，并应用于制备兼具高器件效率和强CPEL性质的CP-OLED。相信本项目的实施不仅有助于开发新型高效圆偏振发光的手性分子材料，还为高性能CP-OLED构筑提供新策略、开辟新途径。同时，也对手性材料化学的发展及手性功能器件应用研究具有重要的创新推动作用。

The development of new chiral molecular materials and new strategies for circularly polarized electroluminescence (CPEL), and their application in high-performance circularly polarized organic light-emitting diodes (CP-OLEDs), are currently a new research hotspot and difficulty in the field of chiral luminescene materials. In this project, a series of new chiral guest and host materials will be designed and synthesized, and high-performance CP-OLEDs will thus be constructed based on new strategy of thermally activated sensitized CPL mechanism. As follows: 1) Novel chiral helicene derivatives with both high PLQY and large glum values are designed and synthesized for guest materials of high-performance CP-OLEDs. 2) A new strategy for the synthesis of chiral TADF materials is proposed by separating the donor and acceptor segments. and a series of new chiral TADF materials with wide energy gap, TADF and CPL properties will be designed and synthesized. 3) We will systematically study the new strategy of thermally activated sensitized CPL mechanism and its application in constructing CP-OLEDs with both high device efficiencies and strong CPEL properties, which using chiral helicene derivatives as guest materials and TADF molecules as the host materials. It is believed that the implementation of this project will not only be conducive to develop novel chiral molecular materials with highly efficient circularly polarized luminescene, but also be helpful in providing new strategies and approaches for the construction of high performance CP-OLEDs. At the same time, it also plays an important role in promoting the development of chiral materials chemistry and the application of chiral functional devices.