纯有机室温磷光材料因其在显示、照明、防伪、生物成像等领域具有独特的应用优势和广阔的应用前景而受到了人们的广泛关注，然而到目前为止，合成高效纯有机室温磷光材料仍极具挑战。传统的通过共价键引入重原子效应是提高磷光量子产率有效途径之一，但是合成复杂且不易改变重原子。本申请拟合成几类含有非共价（阴离子-π+）相互作用的新型有机盐分子，经简单的离子交换法将重原子作为对阴离子引入到有机盐发光分子中，在重原子参与的阴离子-π+相互作用下构建纯有机室温磷光，为纯有机室温磷光的设计合成提供新的思路。在特定条件下，通过调控有机盐分子的堆积方式、对阴离子与π+离子之间的距离或改变分子中不同对阴离子的比例实现对有机盐发光波长的调控，进而构建纯有机单分子白光器件。利用有机盐分子的水溶性和正电荷对细胞器的靶向定位能力，将有机室温磷光材料应用于细胞成像，实现无背景干扰的高分辨细胞器靶向成像。

Pure organic room temperature phosphorescence (RTP) materials have drawn extensive attention because of their unique advantages and broad application prospect in the fields of display, illumination, optoelectronics, optical storage, light-catalysis, anti-counterfeiting, sensors and bioimaging. However, developing persistent and efficient pure organic RTP materials is extremely difficult because of inefficient intersystem crossing (ISC) caused by weak spin-orbit coupling and the rapid rate of nonradiative decay. Heavy-atom effects introduced to phosphor by.covalent bond is an traditional and efficient method to enhance phosphorescent quantum yield, but the tuning of their RTP behavior at the molecular level requires careful structure tailoring, which leads to tedious synthetic and purification tasks. In this project, we will synthesize organic salts with AIE-active using noncovalent (anion-π+) interactions. With heavy halogen ions as counterion introduced into organic salt luminogens by simple ion exchange method, heavy-atom-participated anion-π+ interactions can be formed and furthrt used to construct RTP-active organic salt compounds. This project will deepen theoretical understanding of RTP and demonstrate a promising strategy of heavy-atom-participated anion-π+ interactions to guide the design of materials with pure organic RTP. Under certain condition, organic single-molecule white light emitters will be realized by simply tuning the aggregation modes, the distance between counterions and π+ or ratio of different counterions of organic salts with RTP-active. The target localization ability of organic salt molecules with water solubility will contribute to bioimaging application of RTP materials to achieving high-resolution bioimaging without short-lived autofluorescence.