dc.contributor.author | Koch, Henrik | |
dc.contributor.author | Myhre, Rolf H. | |
dc.contributor.author | Coriani, Sonia | |
dc.date.accessioned | 2017-08-16T07:23:20Z | |
dc.date.available | 2017-08-16T07:23:20Z | |
dc.date.created | 2017-06-26T16:31:11Z | |
dc.date.issued | 2017 | |
dc.identifier.issn | 2041-1723 | |
dc.identifier.uri | http://hdl.handle.net/11250/2450832 | |
dc.description.abstract | Many photoinduced processes including photosynthesis and human vision happen in organic molecules and involve coupled femtosecond dynamics of nuclei and electrons. Organic molecules with heteroatoms often possess an important excited-state relaxation channel from an optically allowed ππ* to a dark nπ* state. The ππ*/nπ* internal conversion is difficult to investigate, as most spectroscopic methods are not exclusively sensitive to changes in the excited-state electronic structure. Here, we report achieving the required sensitivity by exploiting the element and site specificity of near-edge soft X-ray absorption spectroscopy. As a hole forms in the n orbital during ππ*/nπ* internal conversion, the absorption spectrum at the heteroatom K-edge exhibits an additional resonance. We demonstrate the concept using the nucleobase thymine at the oxygen K-edge, and unambiguously show that ππ*/nπ* internal conversion takes place within (60 ± 30) fs. High-level-coupled cluster calculations confirm the method’s impressive electronic structure sensitivity for excited-state investigations. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | Nature Publishing Group | nb_NO |
dc.relation.uri | https://www.nature.com/articles/s41467-017-00069-7 | |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Probing ultrafast ππ*/nπ* internal conversion inorganic chromophores via K-edge resonantabsorption | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | publishedVersion | nb_NO |
dc.source.journal | Nature Communications | nb_NO |
dc.source.issue | 8 | nb_NO |
dc.identifier.doi | 10.1038/s41467-017-00069-7 | |
dc.identifier.cristin | 1478992 | |
dc.relation.project | Notur/NorStore: nn2962k | nb_NO |
dc.description.localcode | This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. | nb_NO |
cristin.unitcode | 194,66,25,0 | |
cristin.unitname | Institutt for kjemi | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |