不同于经典高分子荧光材料一般采用电子给体与电子受体单元的共轭结构连接和化学键电荷转移的传统结构设计，本项目旨在提出发展具有空间电荷转移效应非共轭高分子荧光材料的学术概念和构建方式，实现分子结构由共轭高分子向非共轭高分子的转变、发光本质从分子内化学键电荷转移向分子间空间电荷转移的转变。通过比较研究共轭结构和非共轭结构高分子在发光特性、器件性能等方面的异同，揭示非共轭高分子骨架选择对实现空间电荷转移效应的重要性。通过研究电子给体与电子受体的分子间相互作用，包括单线态-三线态能级差、激发态寿命、TADF效应，揭示电子给体与电子受体选择对颜色调控、效率提升和传输平衡的重要性，期望能够阐明空间电荷转移非共轭高分子荧光材料的发光机制和物理本质，重点发展两类具有国际特色的高分子发光材料（空间电荷转移高分子红绿蓝荧光材料和空间电荷转移高分子主体材料），形成对本领域发展具有带动和引领作用的原创性成果。

Polymer light-emitting diodes (PLEDs) are one of the most studied subjects in flexible electronics thanks to their economical wet fabrication procedure for realizing the price advantage of the product device. This project aims to propose novel concept for the design of fluorescent polymers with non-conjugated backbone and through-space charge transfer (TSCT) effect between pendant electron donor (D) and acceptor (A) units , different from conventional thermally activated delayed fluorescence (TADF) polymers with conjugated D-A structure and through-bond charge transfer (TBCT) effect. The non-conjugated architecture is expected to avoid the strong electron coupling between D and A that exists in conjugated D-A polymers, enabling us to realize blue emission. The spatial π−π interactions between the physically separated D and A units allow us to achieve both small singlet–triplet energy splitting (ΔEST) and high photoluminescence quantum yield (PLQY) . The importance of non-conjugated backbone and the selection of electron donor (D) and acceptor (A) with different donating or withdrawing ability for tuning the emission color and efficiency will be discussed, and comparison study between conjugated and non-conjugated polymers for PLED fabrication will be given for investigating the light-emitting mechanism for TSCT polymer. Two kinds of light-emitting polymers including TSCT polymers with red, green and blue emission, and TSCT polymer hosts will be developed.