Poly(heptazine imide) ligand exchange enables remarkable low catalyst loadings in heterogeneous metallaphotocatalysis

Liuzhuang Xing, Qian Yang, Chen Zhu, Yilian Bai, Yurong Tang (), Magnus Rueping () and Yunfei Cai ()
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Liuzhuang Xing: School of Chemistry and Chemical Engineering, Chongqing University
Qian Yang: School of Chemistry and Chemical Engineering, Chongqing University
Chen Zhu: KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST)
Yilian Bai: School of Chemistry and Chemical Engineering, Chongqing University
Yurong Tang: School of Chemistry and Chemical Engineering, Chongqing University
Magnus Rueping: KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST)
Yunfei Cai: School of Chemistry and Chemical Engineering, Chongqing University

Nature Communications, 2023, vol. 14, issue 1, 1-11

Abstract: Abstract The development of heterogeneous metallaphotocatalysis is of great interest for sustainable organic synthesis. The rational design and controllable preparation of well-defined (site-isolated) metal/photo bifunctional solid catalysts to meet such goal remains a critical challenge. Herein, we demonstrate the incorporation of privileged homogeneous bipyridyl-based Ni-catalysts into highly ordered and crystalline potassium poly(heptazine imide) (K-PHI). A variety of PHI-supported cationic bipyridyl-based Ni-catalysts (LnNi-PHI) have been prepared and fully characterized by various techniques including NMR, ICP-OES, XPS, HAADF-STEM and XAS. The LnNi-PHI catalysts exhibit exceptional chemical stability and recyclability in diverse C−P, C−S, C−O and C−N cross-coupling reactions. The proximity and cooperativity effects in LnNi-PHI significantly enhances the photo/Ni dual catalytic activity, thus resulting in low catalyst loadings and high turnover numbers.

Date: 2023
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DOI: 10.1038/s41467-023-37113-8

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