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A Porous and Stable Porphyrin Metal‐Organic Framework as an Efficient Catalyst towards Visible‐Light‐Mediated Aerobic Cross‐Dehydrogenative‐Coupling Reactions
Author(s) -
Liu Jiewei,
Zhang Kun,
Chen Zhiyao,
Wei ZhangWen,
Zhang Li
Publication year - 2020
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201901697
Subject(s) - porphyrin , photochemistry , catalysis , visible spectrum , porosity , coupling (piping) , metal organic framework , coupling reaction , metal , chemistry , materials science , chemical engineering , organic chemistry , optoelectronics , composite material , adsorption , engineering
Abstract Porphyrin metal‐organic frameworks (PMOFs) are emerging as heterogeneous photocatalysts owing to the well‐designed frameworks incorporated with powerful light‐harvesting porphyrin chromophores. The porous and stable framework Ir−PCN‐224 (which is also denoted as Ir−PMOF‐1), which has been prepared by the self‐assembly of Ir(TCPP)Cl (TCPP=tetrakis(4‐carboxyphenyl)porphyrin) and ZrCl 4 , is reported herein to be efficient for the aerobic cross‐dehydrogenative carbon−phosphorus coupling reaction, giving rise to a high turn‐over number (TON) of up to 17200 under visible light irradiation (λ≥420 nm). Electron paramagnetic resonance (EPR) experiments disclose that the active species might be the superoxide radical anion (O 2 .− ). Additionally, the intermediate imine cation has been detected by high‐resolution mass spectrometry (HRMS).