M-salen基三维共价有机骨架材料的制备及催化性能研究

本项目针对三维COFs材料比表面积大、独特有序的多孔结构和稳定性良好的特性，引入M-Salen作为主要结构基元，与Td构型建筑块通过共价键连接制备系列嵌入M-Salen催化活性中心的三维COFs，即自负载催化活性位点的、本征型三维COFs催化剂。利用烯烃、烷烃、芳烃的选择性氧化等几类其他化学反应来评估材料的催化能力，分析材料的骨架结构、活性位点、比表面积、孔体积、孔径等对催化剂性能的影响；揭示M-Salen单元、有机构筑块、拓扑学结构等与催化性能之间的关系，获得易分离、易回收、能循环使用、催化效率高的三维COFs催化剂材料。该项目的成功实施对丰富新型三维COFs的种类，推动COFs催化剂的研究进展具有重要的学术意义。

In view of the characteristics of 3D covalent organic frameworks (COFs) materials with large surface area, uniform porous structure and good stability, M-Salen are introduced as the main structural units and link with Td geometric building blocks via the covalent bond to construct a series of new 3D COFs materials embedded in M-Salen catalytic active sites, that is, intrinsic 3D COFs catalysts with self-loading catalyzed active sites. The selective oxidation reactions of olefins, alkanes and aromatics and other chemical reactions are used to evaluate the catalytic ability of the materials; analyze the influence of the structure skeletons, active sites, specific surface areas, pore volumes, pore sizes and other factors on the catalytic performances of the catalysts; reveal the relationship between the structure skeletons (M-Salen unit, organic building unit, topology structure) and the catalytic properties to obtain easy separation and recovery, recycling, and high catalytic efficiency of 3D COFs catalyst materials. The successful implementation of this project has important academic significance to enrich the new types of 3D COFs and promote the research progress of COFs catalyst.