一种基于卟啉的 sp2 碳共轭共价有机聚合物，含有用于高效异相光催化的柔性链

IF 4.1 3区化学 Q2 CHEMISTRY, PHYSICAL Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2024-10-09 DOI:10.1016/j.jphotochem.2024.116072

Dengmeng Song , Jiaojiao Wei , Luyao Qiang , Jun Li

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摘要

卟啉基共价有机聚合物是一种优良的催化剂。本文设计并合成了一种 sp2 碳链卟啉基有机聚合物 H2Pp-PDAN，该聚合物是由含有柔性链的卟啉单体 H2Pp 与 1，4-苯二乙腈 PDAN 共同缩合而成。作为光催化剂，H2Pp-PDAN 在胺的光催化氧化偶联反应中表现出优异的光催化性能，并成功用于 15 个连续反应，且未发现催化活性降低。H2Pp-PDAN 在光催化氧化硫代苯甲醚为甲基苯基亚砜的反应中表现出良好的光催化活性和优异的可回收性。机理研究表明，H2Pp-PDAN 对苄胺偶联物的光催化氧化是通过能量转移和电子传递两种途径进行的。

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A Porphyrin-Based sp2 Carbon-Conjugated covalent organic polymer containing flexible chains for efficient heterogeneous photocatalysis

Porphyrin based covalent organic polymers are excellent catalysts. Herein, a sp² carbon linked porphyrin based organic polymer H₂Pp-PDAN was designed and synthesized by co-condensation of porphyrin monomer containing flexible chains H₂Pp with 1, 4-phenylenediacetonitrile PDAN. As photocatalysts, H₂Pp-PDAN exhibited excellent photocatalytic performance for photocatalytic oxidative coupling of amines, and was successfully used for 15 consecutive reactions with no detectable reduction of the catalytic activity. H₂Pp-PDAN showed good photocatalytic activity and excellent recyclability for photocatalytic oxidation of thioanisole to methyl phenyl sulfoxide. Mechanistic studies revealed that the photocatalytic oxidation of benzylamine coupling by H₂Pp-PDAN proceeds via both energy transfer and electron transfer pathways.

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来源期刊

Journal of Photochemistry and Photobiology A-chemistry 化学-物理化学

CiteScore

7.90

自引率

7.00%

发文量

580

审稿时长

48 days

期刊介绍： JPPA publishes the results of fundamental studies on all aspects of chemical phenomena induced by interactions between light and molecules/matter of all kinds. All systems capable of being described at the molecular or integrated multimolecular level are appropriate for the journal. This includes all molecular chemical species as well as biomolecular, supramolecular, polymer and other macromolecular systems, as well as solid state photochemistry. In addition, the journal publishes studies of semiconductor and other photoactive organic and inorganic materials, photocatalysis (organic, inorganic, supramolecular and superconductor). The scope includes condensed and gas phase photochemistry, as well as synchrotron radiation chemistry. A broad range of processes and techniques in photochemistry are covered such as light induced energy, electron and proton transfer; nonlinear photochemical behavior; mechanistic investigation of photochemical reactions and identification of the products of photochemical reactions; quantum yield determinations and measurements of rate constants for primary and secondary photochemical processes; steady-state and time-resolved emission, ultrafast spectroscopic methods, single molecule spectroscopy, time resolved X-ray diffraction, luminescence microscopy, and scattering spectroscopy applied to photochemistry. Papers in emerging and applied areas such as luminescent sensors, electroluminescence, solar energy conversion, atmospheric photochemistry, environmental remediation, and related photocatalytic chemistry are also welcome.