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Liao B, Gao J, Weng P, He L, Zhang Y, Liu Q, Zhou Z. Semiconductor Effect from Pd(II) Porphyrin Metal to Its Ligand in Photocatalytic N-Dealkylation. CHEMSUSCHEM 2024:e202401381. [PMID: 39113132 DOI: 10.1002/cssc.202401381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2024] [Revised: 07/19/2024] [Indexed: 10/11/2024]
Abstract
In this work, four saddled Pd(II) porphyrins were developed as photocatalyst for N-dealkylation of triethyl Rhodamine (TER) under visible light, and their catalytic ability was found to be negatively related to the out-of-plane of their macrocycles. Two important relationships involving the metalloporphyrins as catalyst were revealed: (1) a photoexcitative semiconductor effect between the 4dx 2-γ 2(Pd) and a2u(π) orbitals of Pd(II) porphyrin on the dealkylation. (2) a domino process from strap length, ring geometry, core deformation, d-π gap variation, to photocatalytic activity. Two revelations imply a unidirectional electron transfer route from axial ligand, to central metal, to porphyrin ring based on photoexcitation and guide the design and development of complex photocatalysts, and their revelation is attributed to the acquisition of a series of Pd(II) porphyrins with continuous ring distortion. The findings help to understand the photocatalytic single electron transfer (SET)-first mechanism based on metallic complex.
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Affiliation(s)
- Borong Liao
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecules, Ministry of Education; and School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Yuhu District, Xiangtan, 411201, China
| | - Junhao Gao
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecules, Ministry of Education; and School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Yuhu District, Xiangtan, 411201, China
| | - Pei Weng
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecules, Ministry of Education; and School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Yuhu District, Xiangtan, 411201, China
- Institute for Catalysis and Energy Solutions, Florida Campus, University of South Africa, Roodepoort, 1710, South Africa
| | - Linya He
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecules, Ministry of Education; and School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Yuhu District, Xiangtan, 411201, China
| | - Yusheng Zhang
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecules, Ministry of Education; and School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Yuhu District, Xiangtan, 411201, China
| | - Qiuhua Liu
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecules, Ministry of Education; and School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Yuhu District, Xiangtan, 411201, China
- Institute for Catalysis and Energy Solutions, Florida Campus, University of South Africa, Roodepoort, 1710, South Africa
| | - Zaichun Zhou
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecules, Ministry of Education; and School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Yuhu District, Xiangtan, 411201, China
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