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

{"title":"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","authors":"Kori Sye, Clare A Leahy, Josh Vura-Weis","doi":"10.26434/chemrxiv-2021-x6q87","DOIUrl":null,"url":null,"abstract":"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.","PeriodicalId":9643,"journal":{"name":"Catalysis Science & Technology","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2021-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Low quantum efficiency of μ-oxo iron bisporphyrin photoacatalysts explained with femtosecond M-edge XANES\",\"authors\":\"Kori Sye, Clare A Leahy, Josh Vura-Weis\",\"doi\":\"10.26434/chemrxiv-2021-x6q87\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"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.\",\"PeriodicalId\":9643,\"journal\":{\"name\":\"Catalysis Science & Technology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2021-12-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Catalysis Science & Technology\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.26434/chemrxiv-2021-x6q87\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysis Science & Technology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.26434/chemrxiv-2021-x6q87","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

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。

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

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.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Catalysis Science & Technology

自引率

0.00%

发文量