dc.contributor.author | J. A. Wolf, Thomas | |
dc.contributor.author | Heilemann Myhre, Rolf | |
dc.contributor.author | P. Cryan, James | |
dc.contributor.author | Coriani, Sonia | |
dc.contributor.author | Squibb, Richard | |
dc.contributor.author | Battistoni, Andrea | |
dc.contributor.author | Berrah, Nora | |
dc.contributor.author | Bostedt, Christoph | |
dc.contributor.author | Bucksbaum, Phil | |
dc.contributor.author | Coslovich, Giacomo | |
dc.contributor.author | Feifel, Raimund | |
dc.contributor.author | J. Gaffney, Kelly | |
dc.contributor.author | Grilj, Jakob | |
dc.contributor.author | Martinez, Todd J. | |
dc.contributor.author | Miyabe, Shungo | |
dc.contributor.author | Moeller, Stefan P. | |
dc.contributor.author | Mucke, Melanie | |
dc.contributor.author | Natan, Adi | |
dc.contributor.author | Obaid, Razid | |
dc.contributor.author | Osipov, Timur | |
dc.contributor.author | Plekan, Oksana | |
dc.contributor.author | Wang, Song | |
dc.contributor.author | Koch, Henrik | |
dc.contributor.author | Gühr, Markus | |
dc.date.accessioned | 2017-11-09T14:31:28Z | |
dc.date.available | 2017-11-09T14:31:28Z | |
dc.date.created | 2017-09-08T10:42:59Z | |
dc.date.issued | 2017 | |
dc.identifier.issn | 2041-1723 | |
dc.identifier.uri | http://hdl.handle.net/11250/2465359 | |
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 in organic chromophores via K-edge resonant absorption | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | publishedVersion | nb_NO |
dc.source.volume | 8 | nb_NO |
dc.source.journal | Nature Communications | nb_NO |
dc.source.issue | 1 | nb_NO |
dc.identifier.doi | 10.1038/s41467-017-00069-7 | |
dc.identifier.cristin | 1492029 | |
dc.description.localcode | © 2017 The Authors. Published by Nature Publishing Group. This is an open access article licensed under a Creative Commons Attribution 4.0 International License | nb_NO |
cristin.unitcode | 194,66,25,0 | |
cristin.unitname | Institutt for kjemi | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |