{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Farrell KM"],"funding":["HHS | NIH | National Institute of Diabetes and Digestive and Kidney Diseases","NIDDK NIH HHS","NIGMS NIH HHS","National Science Foundation"],"pagination":["e2117398119"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC8833161"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["119(6)"],"pubmed_abstract":["Two-dimensional (2D) optical spectroscopy contains cross-peaks that are helpful features for determining molecular structure and monitoring energy transfer, but they can be difficult to resolve from the much more intense diagonal peaks. Transient absorption (TA) spectra contain transitions similar to cross-peaks in 2D spectroscopy, but in most cases they are obscured by the bleach and stimulated emission peaks. We report a polarization scheme, <0°,0°,+θ<sub>2</sub>(t<sub>2</sub>),-θ<sub>2</sub>(t<sub>2</sub>)>, that can be easily implemented in the pump-probe beam geometry, used most frequently in 2D and TA spectroscopy. This scheme removes the diagonal peaks in 2D spectroscopies and the intense bleach/stimulated emission peaks in TA spectroscopies, thereby resolving the cross-peak feature"],"journal":["Proceedings of the National Academy of Sciences of the United States of America"],"pubmed_title":["A polarization scheme that resolves cross-peaks with transient absorption and eliminates diagonal peaks in 2D spectroscopy."],"pmcid":["PMC8833161"],"funding_grant_id":["R01DK079895","DGE-1747503","R01 GM102387","R01 DK079895","R01GM135936"],"pubmed_authors":["Farrell KM","Yang N","Zanni MT"],"additional_accession":[]},"is_claimable":false,"name":"A polarization scheme that resolves cross-peaks with transient absorption and eliminates diagonal peaks in 2D spectroscopy.","description":"Two-dimensional (2D) optical spectroscopy contains cross-peaks that are helpful features for determining molecular structure and monitoring energy transfer, but they can be difficult to resolve from the much more intense diagonal peaks. Transient absorption (TA) spectra contain transitions similar to cross-peaks in 2D spectroscopy, but in most cases they are obscured by the bleach and stimulated emission peaks. We report a polarization scheme, <0°,0°,+θ<sub>2</sub>(t<sub>2</sub>),-θ<sub>2</sub>(t<sub>2</sub>)>, that can be easily implemented in the pump-probe beam geometry, used most frequently in 2D and TA spectroscopy. This scheme removes the diagonal peaks in 2D spectroscopies and the intense bleach/stimulated emission peaks in TA spectroscopies, thereby resolving the cross-peak feature","dates":{"release":"2022-01-01T00:00:00Z","publication":"2022 Feb","modification":"2026-05-09T21:48:01.742Z","creation":"2024-11-13T18:15:50.12Z"},"accession":"S-EPMC8833161","cross_references":{"pubmed":["35115405"],"doi":["10.1073/pnas.2117398119"]}}