以聚合物手性功能材料的制备和应用为导向，围绕螺旋聚苯乙炔主链旋向、伸缩调控及其相关结构、性能变化等关键科学问题，通过新单体体系和高效、高选择性、高可控性聚合反应的研究，获得具有紧密、可调cis-cisoid螺旋构象的不同拓扑结构功能聚苯乙炔；掌握cis-cisoid螺旋聚苯乙炔的结构设计关键，阐明紧密cis-cisoid与伸展cis-transoid构象转变机制，表征不同螺旋构象的力学稳定性；实现单取代聚乙炔高效荧光，建立分子内运动限制发光和力致荧光变色分子设计新策略；发展螺旋聚合物组装新方法，构筑手性微纳结构、胆甾相液晶和刺激响应水凝胶，揭示多层次有序高级结构形成过程中的手性传递、放大和表达规律，实现手性材料的高效组装和性能优化；探讨其在圆偏振荧光、分子识别、手性控释、聚合物链运动及聚合物材料应力/应变分布与疲劳裂纹发展、聚合后反应的可视化研究等方面的应用，促进手性材料的发展和实际应用。

In this project, we will focus on the preparation and appliction of chiral polyphenylacetylene funcational materials. The hecal screw sense, tunable shrinkage/extension of the polymer chain and their variable functions are the key scientific issues. The synthesis of novel monomers and their efficient controlled polymerization with good selectivity will be carried out to obtain functional polyphenylacetylene derivatives with the various topological structures and tunable dense cis-cisoid helical conformation. The key parameters of their chemical structures in the construction of the cis-cisoid conformation will be investigated. We will discover the mechanism of the transition between the compact cis-cisoid and the stretched cis-transoid conformation and their effect on the mechanical stability. By the rational design of their chemical structures, we aim to prepare the luminecencet mono-substituted polyphenylacetylenes, especially aggregation-induced emission based on the restriction molecule rotation and luminescent mechanochromism. We will develop the novel self-assembly strategy of polyphenylacetylenes derivatives. Chiral nano/micro structure, nematic liquid crystals and stimuli-responsive hydrogels will be constructed, and chirality transfer, amplification and expression in the hirachical self-assembly structures will be discovered to realize the efficient self-assembly and optimizated functions. The application of polyphenylacetylenes derivatives will be conducted in the field of the chiral polarized luminescence, molecular recognition, controlled release of chiral molecules, mobility of polymer chain, visualization in the polymer movement, stress and strain distribution, fatigue crack growth, and post-polymerization reactions, which will promote the exploration and pratical application of chiral materials.