Photochemically Generated Thiyl Free Radicals Observed by X-ray Absorption Spectroscopy
Sulfur-based thiyl radicals are known to be involved in a wide range of chemical and biological processes, but they are often highly reactive, which makes them difficult to observe directly. We report herein X-ray absorption spectra and analysis that support the direct observation of two different t...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
| Published: |
American Chemical Society
2017
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| Online Access: | http://hdl.handle.net/20.500.11937/57066 |
| _version_ | 1848760006420201472 |
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| author | Sneeden, E. Hackett, Mark Cotelesage, J. Prince, R. Barney, M. Goto, K. Block, E. Pickering, I. George, G. |
| author_facet | Sneeden, E. Hackett, Mark Cotelesage, J. Prince, R. Barney, M. Goto, K. Block, E. Pickering, I. George, G. |
| author_sort | Sneeden, E. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Sulfur-based thiyl radicals are known to be involved in a wide range of chemical and biological processes, but they are often highly reactive, which makes them difficult to observe directly. We report herein X-ray absorption spectra and analysis that support the direct observation of two different thiyl species generated photochemically by X-ray irradiation. The thiyl radical sulfur K-edge X-ray absorption spectra of both species are characterized by a uniquely low energy transition at about 2465 eV, which occurs at a lower energy than any previously observed feature at the sulfur K-edge and corresponds to a 1s?3p transition to the singly occupied molecular orbital of the free radical. Our results constitute the first observation of substantial levels of thiyl radicals generated by X-ray irradiation and detected by sulfur K-edge X-ray absorption spectroscopy. |
| first_indexed | 2025-11-14T10:08:55Z |
| format | Journal Article |
| id | curtin-20.500.11937-57066 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:08:55Z |
| publishDate | 2017 |
| publisher | American Chemical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-570662018-01-09T07:09:33Z Photochemically Generated Thiyl Free Radicals Observed by X-ray Absorption Spectroscopy Sneeden, E. Hackett, Mark Cotelesage, J. Prince, R. Barney, M. Goto, K. Block, E. Pickering, I. George, G. Sulfur-based thiyl radicals are known to be involved in a wide range of chemical and biological processes, but they are often highly reactive, which makes them difficult to observe directly. We report herein X-ray absorption spectra and analysis that support the direct observation of two different thiyl species generated photochemically by X-ray irradiation. The thiyl radical sulfur K-edge X-ray absorption spectra of both species are characterized by a uniquely low energy transition at about 2465 eV, which occurs at a lower energy than any previously observed feature at the sulfur K-edge and corresponds to a 1s?3p transition to the singly occupied molecular orbital of the free radical. Our results constitute the first observation of substantial levels of thiyl radicals generated by X-ray irradiation and detected by sulfur K-edge X-ray absorption spectroscopy. 2017 Journal Article http://hdl.handle.net/20.500.11937/57066 10.1021/jacs.7b05116 American Chemical Society restricted |
| spellingShingle | Sneeden, E. Hackett, Mark Cotelesage, J. Prince, R. Barney, M. Goto, K. Block, E. Pickering, I. George, G. Photochemically Generated Thiyl Free Radicals Observed by X-ray Absorption Spectroscopy |
| title | Photochemically Generated Thiyl Free Radicals Observed by X-ray Absorption Spectroscopy |
| title_full | Photochemically Generated Thiyl Free Radicals Observed by X-ray Absorption Spectroscopy |
| title_fullStr | Photochemically Generated Thiyl Free Radicals Observed by X-ray Absorption Spectroscopy |
| title_full_unstemmed | Photochemically Generated Thiyl Free Radicals Observed by X-ray Absorption Spectroscopy |
| title_short | Photochemically Generated Thiyl Free Radicals Observed by X-ray Absorption Spectroscopy |
| title_sort | photochemically generated thiyl free radicals observed by x-ray absorption spectroscopy |
| url | http://hdl.handle.net/20.500.11937/57066 |