传统光电器件由于使用偏振片而引起的能量转换效率低、器件设计复杂及亮度低等问题有望通过发光液晶能发射线/圆偏振光得到解决。然而，传统发光液晶材料存在聚集导致猝灭引起的效率低且偏振性能较差等缺点。因此，对基于发光液晶的偏振发光研究具有重要意义。. 将聚集诱导发光（AIE）基团及手性中心引入聚苯乙炔（PPA）侧链将能够形成具有片状或柱状结构的有序堆积以发射高偏振比/不对称因子的线/圆偏振光。本项目拟将具有AIE效应的二苯乙炔、氰基二苯乙烯及四苯基乙烯引入PPA侧链以形成片状或柱状结构，采用热分析、偏光显微镜、一维和二维X-射线衍射、稳态和瞬态荧光光谱等多种研究手段考察其单分子形状、本体相结构、溶液及薄膜发光行为，并在此基础上进一步考察其偏振发光行为。. 本项目将揭示发光性侧链PPA相结构与偏振发光行为之间的关系，为新型发光材料的一般性设计、结构与性能的研究提供理论和实验依据。

The low energy conversion efficiency, complicated device design, and low brightness of traditional optical electronic devices due to the use of polarizer can be solved by by linearly or circularly polarized luminescence (LPL or CPL) provided by luminescent liquid crystals. Traditional luminescent liquid crystalline materials faced the deficiency of low luminescent quantum yield, low polarized ratio or low emission dissymmetry factor because of the notorious aggregation caused quenching. Thus, the research of polarized emission based on luminescent liquid crystal is very important.. By introducing aggregation induced emission (AIE) groups and chiral center to the side chains of polyphenylacetylenes (PPA) would form sheet-like or column-like structure with high shape persistence. The resultant side-chain liquid crystalline PPA (SCLCPPA) can be LPL or CPL with high efficiency and high polarized ratio/high emission dissymmetry factor. In this proposal, diphenylacetylene, cyano-diphenylethene and tetraphenylethene will be introduced to the side chains of PPA to form SCLCPPA with sheet-like or column (helical structure) structure. By using thermal analysis, polarized light microscopy, one and two dimensional X-Ray diffraction, steady and time resolved fluorescence spectroscopy and other methods to investigate the polymeric molecular shape, liquid crystalline behavior and phase structure, photoluminescence of the solution and thin film, based on which, we will investigate the polarized luminescence.. This project will illuminate the relationship of phase structure and polarized luminescent behavior of SCLCPPA, and pave the way of design and preparation, structure and properties of polarized luminescent materials by providing theoretical and experimental results.