Excited state vibrational spectra of all-trans retinal derivatives in solution revealed by pump-dfwm experiments
The ultrafast structural changes during the photoinduced isomerization of the retinal-protonated Schiff base (RPSB) is still a poorly understood aspect in the retinal’s photochemistry. In this work, we apply pump-degenerate four-wave mixing (pump-DFWM) to all-trans retinal (ATR) and retinal Schiff b...
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| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
December 3, 2018
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| In: |
The journal of physical chemistry. B, Biophysics, biomaterials, liquids, and soft matter
Year: 2018, Jahrgang: 122, Heft: 51, Pages: 12271-12281 |
| ISSN: | 1520-5207 |
| DOI: | 10.1021/acs.jpcb.8b08495 |
| Online-Zugang: | Resolving-System, Volltext: https://doi.org/10.1021/acs.jpcb.8b08495 Verlag: https://pubs.acs.org/doi/10.1021/acs.jpcb.8b08495 
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| Verfasserangaben: | Jan Philip Kraack, Marcus Motzkus, and Tiago Buckup |
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| 520 | |a The ultrafast structural changes during the photoinduced isomerization of the retinal-protonated Schiff base (RPSB) is still a poorly understood aspect in the retinal’s photochemistry. In this work, we apply pump-degenerate four-wave mixing (pump-DFWM) to all-trans retinal (ATR) and retinal Schiff bases (RSB) to resolve coherent high- and low-frequency vibrational signatures from excited electronic states. We show that the vibrational spectra of excited singlet states in these samples exhibit pronounced differences compared to the relaxed ground state. | ||
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