用飞秒m边XANES解释了μ-氧铁双卟啉光催化剂的低量子效率

Catalysis Science & Technology Pub Date : 2021-12-22 DOI:10.26434/chemrxiv-2021-x6q87

Kori Sye, Clare A Leahy, Josh Vura-Weis

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引用次数: 1

摘要

桥接μ-氧铁双卟啉是有机氧化转化的光催化剂，但量子效率较低。我们利用飞秒光学和M2,3边XANES光谱研究了μ-氧铁双卟啉(TPPFe)2O的早期光动力学，为TPPFe(III)+/TPPFe(III)-O-离子对的优先形成提供了证据，而不是期望的TPPFe(II)/TPPFe(IV)=O。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Low quantum efficiency of μ-oxo iron bisporphyrin photoacatalysts explained with femtosecond M-edge XANES

Bridged μ-oxo iron bisporphyrins serve as photocatalysts for oxidative organic transformations, but suffer from low quantum efficiency. We use femtosecond optical and M2,3-edge XANES spectroscopy to investigate the early photodynamics of the μ-oxo iron bisporphyrin, (TPPFe)2O, providing evidence for the preferential formation of an TPPFe(III)+/TPPFe(III)-O- ion pair state instead of the desired TPPFe(II)/TPPFe(IV)=O.

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Catalysis Science & Technology

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