钯催化羰基化缩聚和碳–碳偶联缩聚因存在昂贵的均相钯催化剂难以与产物分离和回收再用、且残留的钯因包埋在聚合物链中很难被除去等不足，其实际应用受到限制。本项目拟设计、合成可通过磁性方便分离和循环再用的系列新型负载钯配合物，研究其在钯催化羰基化缩聚和碳–碳偶联缩聚反应中的应用。通过优化反应条件、考察催化剂的构效关系，将筛选出的具有高活性及优异循环再用性能的负载钯催化剂应用于新型含醚酮结构的芳香二碘(溴)化物与芳二胺的羰基化缩聚及新型含氟取代的芳香二溴(碘)化物分别与芳二硼酸酯、二锡化物、芳二炔的碳–碳偶联缩聚反应中，并对制备的新型聚合物的结构和性能进行表征和测试，为开发高性能聚芳酰胺、各种新型共轭聚合物功能材料提供经济、实用的绿色新途径。可磁性回收和循环再用的高活性负载钯催化剂的成功应用将有助于大大降低聚合反应成本，得到高纯度的聚合物，为钯催化聚合反应能应用于实验室大规模制备及工业应用奠定基础。

Palladium-catalyzed carbonylative polycondensation and carbon-carbon coupling polycondensation suffer from some drawbacks such as the difficult separation from the product and non-recyclability of expensive homogeneous palladium catalysts and high level of residual palladium stubbornly embedded in the chains of synthesized polymers, which restrict their applications in large-scale preparation and some fields. In this project, we intend to design and synthesize a series of novel magnetically recyclable supported palladium complexes and investigate their applications in palladium-catalyzed carbonylative polycondensation and carbon-carbon coupling polycondensation reactions. We expect that heterogeneous palladium catalysts having high catalytic activity and excellent recyclability will be screened by the optimization of reaction conditions and investigation on the relationship between catalyst structures and catalytic activity. The screened palladium complexes will be employed as heterogeneous catalysts for carbonylative polycondensation of new aromatic diiodides (dibromides) containing ether ketone structure with aromatic diamines, carbon-carbon coupling polycondensation of new fluoro-substituted aromatic dibromides (diiodides) with aromatic diboronic acid esters, distannanes, and aromatic diynes, respectively. The polymers obtained will be characterized by different physical and chemical techniques, providing economical and practical methods for the preparations of novel high performance aromatic polyamides and a variety of novel conjugated polymer functional materials. The use of highly efficient and magnetically recyclable heterogeneous palladium catalysts helps to reduce the cost of polymerization reactions and leads to highly purified polymers. Our research work will provide a theoretical basis for the applications of palladium-catalyzed polymerization reactions in large-scale preparation or in industry production.