{"_id":"13044","month":"05","day":"17","quality_controlled":"1","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","tmp":{"name":"Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)","legal_code_url":"https://creativecommons.org/licenses/by-nc/4.0/legalcode","image":"/images/cc_by_nc.png","short":"CC BY-NC (4.0)"},"language":[{"iso":"eng"}],"isi":1,"publication_status":"epub_ahead","date_updated":"2023-12-13T11:19:07Z","main_file_link":[{"url":"https://doi.org/10.1039/d3fd00088e","open_access":"1"}],"date_created":"2023-05-22T06:53:34Z","oa":1,"abstract":[{"text":"Singlet oxygen (1O2) formation is now recognised as a key aspect of non-aqueous oxygen redox chemistry. For identifying 1O2, chemical trapping via 9,10-dimethylanthracene (DMA) to form the endoperoxide (DMA-O2) has become the mainstay method due to its sensitivity, selectivity, and ease of use. While DMA has been shown to be selective for 1O2, rather than forming DMA-O2 with a wide variety of potentially reactive O-containing species, false positives might hypothetically be obtained in the presence of previously overlooked species. Here, we first give unequivocal direct spectroscopic proof by the 1O2-specific near infrared (NIR) emission at 1270 nm for the previously proposed 1O2 formation pathways, which centre around superoxide disproportionation. We then show that peroxocarbonates, common intermediates in metal-O2 and metal carbonate electrochemistry, do not produce false-positive DMA-O2. Moreover, we identify a previously unreported 1O2-forming pathway through the reaction of CO2 with superoxide. Overall, we give unequivocal proof for 1O2 formation in non-aqueous oxygen redox and show that chemical trapping with DMA is a reliable method to assess 1O2 formation.","lang":"eng"}],"publication_identifier":{"eissn":["1364-5498"],"issn":["1359-6640"]},"publisher":"Royal Society of Chemistry","author":[{"last_name":"Mondal","full_name":"Mondal, Soumyadip","id":"d25d21ef-dc8d-11ea-abe3-ec4576307f48","first_name":"Soumyadip"},{"full_name":"Jethwa, Rajesh B","orcid":"0000-0002-0404-4356","last_name":"Jethwa","first_name":"Rajesh B","id":"4cc538d5-803f-11ed-ab7e-8139573aad8f"},{"full_name":"Pant, Bhargavi","last_name":"Pant","first_name":"Bhargavi","id":"50c64d4d-eb97-11eb-a6c2-d33e5e14f112"},{"id":"4E01D6B4-F248-11E8-B48F-1D18A9856A87","first_name":"Robert","last_name":"Hauschild","orcid":"0000-0001-9843-3522","full_name":"Hauschild, Robert"},{"last_name":"Freunberger","full_name":"Freunberger, Stefan Alexander","orcid":"0000-0003-2902-5319","id":"A8CA28E6-CE23-11E9-AD2D-EC27E6697425","first_name":"Stefan Alexander"}],"article_processing_charge":"No","external_id":{"isi":["001070423500001"]},"department":[{"_id":"StFr"},{"_id":"Bio"}],"keyword":["Physical and Theoretical Chemistry"],"title":"Singlet oxygen in non-aqueous oxygen redox: Direct spectroscopic evidence for formation pathways and reliability of chemical probes","doi":"10.1039/d3fd00088e","article_type":"original","oa_version":"Published Version","status":"public","year":"2023","publication":"Faraday Discussions","type":"journal_article","citation":{"short":"S. Mondal, R.B. Jethwa, B. Pant, R. Hauschild, S.A. Freunberger, Faraday Discussions (2023).","ieee":"S. Mondal, R. B. Jethwa, B. Pant, R. Hauschild, and S. A. Freunberger, “Singlet oxygen in non-aqueous oxygen redox: Direct spectroscopic evidence for formation pathways and reliability of chemical probes,” <i>Faraday Discussions</i>. Royal Society of Chemistry, 2023.","chicago":"Mondal, Soumyadip, Rajesh B Jethwa, Bhargavi Pant, Robert Hauschild, and Stefan Alexander Freunberger. “Singlet Oxygen in Non-Aqueous Oxygen Redox: Direct Spectroscopic Evidence for Formation Pathways and Reliability of Chemical Probes.” <i>Faraday Discussions</i>. Royal Society of Chemistry, 2023. <a href=\"https://doi.org/10.1039/d3fd00088e\">https://doi.org/10.1039/d3fd00088e</a>.","mla":"Mondal, Soumyadip, et al. “Singlet Oxygen in Non-Aqueous Oxygen Redox: Direct Spectroscopic Evidence for Formation Pathways and Reliability of Chemical Probes.” <i>Faraday Discussions</i>, Royal Society of Chemistry, 2023, doi:<a href=\"https://doi.org/10.1039/d3fd00088e\">10.1039/d3fd00088e</a>.","ista":"Mondal S, Jethwa RB, Pant B, Hauschild R, Freunberger SA. 2023. Singlet oxygen in non-aqueous oxygen redox: Direct spectroscopic evidence for formation pathways and reliability of chemical probes. Faraday Discussions.","ama":"Mondal S, Jethwa RB, Pant B, Hauschild R, Freunberger SA. Singlet oxygen in non-aqueous oxygen redox: Direct spectroscopic evidence for formation pathways and reliability of chemical probes. <i>Faraday Discussions</i>. 2023. doi:<a href=\"https://doi.org/10.1039/d3fd00088e\">10.1039/d3fd00088e</a>","apa":"Mondal, S., Jethwa, R. B., Pant, B., Hauschild, R., &#38; Freunberger, S. A. (2023). Singlet oxygen in non-aqueous oxygen redox: Direct spectroscopic evidence for formation pathways and reliability of chemical probes. <i>Faraday Discussions</i>. Royal Society of Chemistry. <a href=\"https://doi.org/10.1039/d3fd00088e\">https://doi.org/10.1039/d3fd00088e</a>"},"date_published":"2023-05-17T00:00:00Z"}