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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
被引:20
|作者:
Liu, Jiewei
[1
,2
,4
]
Zhang, Kun
[1
]
Chen, Zhiyao
[3
]
Wei, Zhang-Wen
[3
]
Zhang, Li
[3
]
机构:
[1] Wuyi Univ, Sch Biotechnol & Hlth Sci, Jiangmen 529020, Peoples R China
[2] Int Healthcare Innovat Inst Jiangmen, Jiangmen 529040, Peoples R China
[3] Sun Yat Sen Univ, Sch Chem, Guangzhou 510275, Peoples R China
[4] Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Peoples R China
基金:
中国博士后科学基金;
中国国家自然科学基金;
关键词:
porphyrin metal-organic frameworks;
aerobic cross dehydrogenative coupling;
carbon-phosphorus coupling;
heterogeneous catalysis;
superoxide radical anion;
ACTIVE CU2+ SITES;
HIGHLY EFFICIENT;
C-C;
SELECTIVE PHOTOOXIDATION;
PHOTOREDOX CATALYSIS;
TERTIARY-AMINES;
WATER;
MOF;
NANOPARTICLES;
PHOTOCATALYST;
D O I:
10.1002/asia.201901697
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
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 ZrCl4, 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 (lambda >= 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).
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页码:1118 / 1124
页数:7
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