Excited state vibrational spectra of all-trans retinal derivatives in solution revealed by pump-dfwm experiments

• Verfasst von: Kraack, Jan Philip [VerfasserIn]
• Verfasst von: Motzkus, Marcus [VerfasserIn]
• Verfasst von: Buckup, Tiago [VerfasserIn]
• Titel: Excited state vibrational spectra of all-trans retinal derivatives in solution revealed by pump-dfwm experiments
• Verf.angabe: Jan Philip Kraack, Marcus Motzkus, and Tiago Buckup
• E-Jahr: 2018
• Jahr: December 3, 2018
• Umfang: 11 S.
• Fussnoten: Gesehen am 03.02.2020
• Titel Quelle: Enthalten in: The journal of physical chemistry <Washington, DC> / B
• Ort Quelle: Washington, DC : Soc., 1997
• Jahr Quelle: 2018
• Band/Heft Quelle: 122(2018), 51, Seite 12271-12281
• ISSN Quelle: 1520-5207
• DOI: doi:10.1021/acs.jpcb.8b08495
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1689066210

Abstract

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.