Reactions of sulfoxides with reactive oxygen species to reveal the radical chemistry of pollution-derived particulate matter

Autor:	Carl P. Soltau, Zac E. Brown, Aidan J. Brock, Alexander P. Martyn, James P. Blinco, Branka Miljevic, John C. McMurtrie, Steven E. Bottle
Rok vydání:	2022
Předmět:	Sulfoxides Materials Chemistry Metals and Alloys Ceramics and Composites Dimethyl Sulfoxide Particulate Matter Thiophenes General Chemistry Reactive Oxygen Species Catalysis Surfaces Coatings and Films Electronic Optical and Magnetic Materials
Zdroj:	Chemical Communications. 58:10416-10419
ISSN:	1364-548X 1359-7345
DOI:	10.1039/d2cc04024g
Popis:	The radical reactions of dimethylsulfoxide (DMSO) and tetrahydrothiophene-1-oxide (THTO) with reactive oxygen species (ROS) in the presence of a nitroxide radical scavenger have been evaluated both synthetically and in analytical practice. Fenton-mediated generation of oxygen-centred radicals produced several unusual products that reflect the fragmentation and ring-opening radical mechanisms of DMSO and THTO respectively. Addition of pollution-derived ROS to DMSO/THTO nitroxide solutions produced LC-MS detectable amounts of the same products isolated from the larger-scaled Fenton reactions. For air pollution analysis, these results highlight the complexity surrounding DMSO reactivity and fragmentation, and indicate that THTO produces simpler outcomes that should facilitate analysis of the processes involved.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4605a13443dd8fe44fa002e1f6ebc3cd https://doi.org/10.1039/d2cc04024g Zobrazit plný text záznamu