Building a Pyrazole–Benzothiadiazole–Pyrazole Photosensitizer into Metal–Organic Frameworks for Photocatalytic Aerobic Oxidation

• DOI: 10.1021/jacs.1c10008
• Publication Date: 2021-12-08T16:01:33Z
• Authors: Ji-Kang Jin; Kun Wu; Xin-Yi Liu; Guo-Quan Huang; Yong-Liang Huang; Dong Luo; Mo Xie; Yifang Zhao; Weigang Lu; Xiao-Ping Zhou; Jian He; Dan Li
• Keywords: Pyrazole; Visible spectrum

Charge separation plays a crucial role in regulating photochemical properties and therefore warrants consideration designing photocatalysts. Metal-organic frameworks (MOFs) are emerging as promising candidates for heterogeneous photocatalysis due to their structural designability tunability of photon absorption. Herein, we report the design pyrazole-benzothiadiazole-pyrazole organic molecule bearing donor-acceptor-donor conjugated π-system fast charge separation. Further attempts integrate such photosensitizer into MOFs afford more effective photocatalyst (JNU-204). Under visible-light irradiation, three aerobic oxidation reactions involving different oxygenation pathways were achieved on JNU-204. Recycling experiments conducted demonstrate stability reusability JNU-204 robust photocatalyst. Furthermore, illustrate its applications facile synthesis pyrrolo[2,1-a]isoquinoline-containing heterocycles, core skeletons family marine natural products. is an exemplary MOF platform with good absorption, suitable band gap, separation, extraordinary chemical proceeding under irradiation.