Coherent high-frequency vibrational dynamics in the excited electronic state of all-trans retinal derivatives
Coherent vibrational dynamics of retinal in excited electronic states are of primary importance in the understanding of photobiology. Using pump-DFWM, we demonstrate for the first time the existence of coherent double-bond high-frequency modulations (>1300 cm-1) in the excited electronic state of...
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| Main Authors: | , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
January 10, 2013
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| In: |
The journal of physical chemistry letters
Year: 2013, Volume: 4, Issue: 3, Pages: 383-387 |
| ISSN: | 1948-7185 |
| DOI: | 10.1021/jz302001m |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/jz302001m
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| Author Notes: | Jan Philip Kraack, Tiago Buckup, and Marcus Motzkus |
| Summary: | Coherent vibrational dynamics of retinal in excited electronic states are of primary importance in the understanding of photobiology. Using pump-DFWM, we demonstrate for the first time the existence of coherent double-bond high-frequency modulations (>1300 cm-1) in the excited electronic state of different retinal derivatives. All-trans retinal as well as retinal Schiff bases exhibit a partial frequency downshift of the C═C double-bond mode from ∼1580 cm-1 in the ground state to 1510 cm-1 in the excited state. In addition, a new vibrational band at ∼1700 cm-1 assigned to the C═N stretching mode in retinal Schiff bases in the excited state is detected. The newly reported bands are observed only in specific spectral regions of excited-state absorption. Implications regarding the observation of vibrational coherences in naturally occurring retinal protonated Schiff bases in rhodopsins are discussed. |
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| Item Description: | Gesehen am 04.11.2021 |
| Physical Description: | Online Resource |
| ISSN: | 1948-7185 |
| DOI: | 10.1021/jz302001m |