Photoredox Heterobimetallic Dual Catalysis Using Engineered Covalent Organic Frameworks
作者:Alberto López-Magano、Borja Ortín-Rubio、Inhar Imaz、Daniel Maspoch、José Alemán、Rubén Mas-Ballesté
DOI:10.1021/acscatal.1c03634
日期:2021.10.1
imine-based layered covalent organic framework (COF), containing phenanthroline units as ligands, has allowed the obtention of a heterobimetallated material. Photoactive Ir and Ni fragments were immobilized within the porous structure of the COF, enabling heterogeneous light-mediated Csp3–Csp2 cross-couplings. As radical precursors, potassium benzyl- and alkoxy-trifluoroborates, organic silicates, and proline
含有菲咯啉单元作为配体的亚胺基层状共价有机骨架(COF)的功能化,使得获得异双金属化材料成为可能。光活性 Ir 和 Ni 片段被固定在 COF 的多孔结构内,从而实现异质光介导的 Csp 3 –Csp 2交叉耦合。使用苄基三氟硼酸钾和烷氧基三氟硼酸钾、有机硅酸盐和脯氨酸衍生物作为自由基前驱体,这使得Ir,Ni@Phen-COF具有良好的多功能性。此外,在所有研究的案例中,与类似的均质系统相比,观察到活性和稳定性增强。