本项目旨在构建一系列用于极性乙烯基单体立体嵌段聚合的稀土金属催化剂，其特征是：1）催化剂对极性乙烯基单体聚合具有好的立体选择性；2）催化剂对极性乙烯基单体的立体选择性可随着Lewis碱、Lewis酸的交替加入而转变和再现。这种稀土金属催化剂有望在温和的条件下催化极性乙烯基单体的可控立体嵌段聚合，获得具有多种微观结构、性能优异、可满足多种需求的高分子材料。深入考察聚合立体选择性与催化剂的结构、配位性Lewis碱之间的关系，建立立体嵌段聚合物的合成方法；通过动力学、计算机密度泛函(DFT)计算阐明聚合反应立体控制机理，为新型催化剂的设计提供新思路和理论依据。

The project focuses on the design and synthesis of a series of novel rare earth metal catalysts for stereoblock copolymerization reaction of polar vinyl monomer. It features: 1) Catalysts show good stereoselectivity for polymerization of polar vinyl monomer; 2) The stereoselectivity of catalysts can be transformed and reproduced. The rare earth metal catalyst will catalyze the controlled stereoselective polymerization of polar vinyl monomers under mild conditions to obtain a variety of polymer materials with excellent microstructure and excellent performance, which can meet various requirements. The project will establish a method for the synthesis of stereoblock polymers by in-depth study the relationship between stereoselectivity and catalyst structure, and the relationship between stereoselectivity and Lewis base. The project will study polymerization mechanism based on the DFT calculation and kinetic study, and will provide the opportunity for designing other new catalyst.