scholarly journals Femtosecond stimulated Raman spectroscopy of the dark S1 excited state of carotenoid in photosynthetic light harvesting complex.

2012 ◽  
Vol 59 (1) ◽  
Author(s):  
Masayuki Yoshizawa ◽  
Ryosuke Nakamura ◽  
Orihiro Yoshimatsu ◽  
Kenta Abe ◽  
Shunsuke Sakai ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Excited State ◽  
High Frequency ◽  
Internal Conversion ◽  
Light Harvesting ◽  
Vibrational Mode ◽  
Vibrational Dynamics ◽  
Light Harvesting Complex ◽  
High Frequency Shift ◽  
Stimulated Raman

Vibrational dynamics of the excited state in the light-harvesting complex (LH1) have been investigated by femtosecond stimulated Raman spectroscopy (FSRS). The native and reconstituted LH1 complexes have same dynamics. The ν(1) (C=C stretching) vibrational mode of spirilloxanthin in LH1 shows ultrafast high-frequency shift in the S(1) excited state with a time constant of 0.3 ps. It is assigned to the vibrational relaxation of the S(1) state following the internal conversion from the photoexcited S(2) state.

scholarly journals Dark excited states of carotenoid in light harvesting complex probing with femtosecond stimulated Raman spectroscopy

2013 ◽  
Vol 41 ◽  
pp. 08007 ◽  
Author(s):  
O. Yoshimatsu ◽  
K. Abe ◽  
S. Sakai ◽  
T. Horibe ◽  
R. Fujii ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Excited States ◽  
Light Harvesting ◽  
Light Harvesting Complex ◽  
Stimulated Raman

Identification of the Excited-State C═C and C═O Modes of trans-β-Apo-8′-carotenal with Transient 2D-IR-EXSY and Femtosecond Stimulated Raman Spectroscopy

2015 ◽  
Vol 6 (9) ◽  
pp. 1592-1598 ◽  
Author(s):  
Mariangela Di Donato ◽  
Elena Ragnoni ◽  
Andrea Lapini ◽  
Tomasz M. Kardaś ◽  
Boźena Ratajska-Gadomska ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Excited State ◽  
2D Ir ◽  
Stimulated Raman

Vibrational structure of the S2 (1Bu) excited state of diphenyloctatetraene observed by femtosecond stimulated Raman spectroscopy

2003 ◽  
Vol 382 (1-2) ◽  
pp. 81-86 ◽  
Author(s):  
Philipp Kukura ◽  
David W. McCamant ◽  
Paul H. Davis ◽  
Richard A. Mathies
Keyword(s):  
Raman Spectroscopy ◽  
Excited State ◽  
Vibrational Structure ◽  
Stimulated Raman

Protein Dynamics Tunes Excited State Positions in Light-Harvesting Complex II

2015 ◽  
Vol 119 (10) ◽  
pp. 3920-3930 ◽  
Author(s):  
Kamarniso Vrandecic ◽  
Margus Rätsep ◽  
Laura Wilk ◽  
Leonid Rusevich ◽  
Maksym Golub ◽  
...  
Keyword(s):  
Excited State ◽  
Protein Dynamics ◽  
Light Harvesting ◽  
Light Harvesting Complex ◽  
Complex Ii ◽  
Light Harvesting Complex Ii

scholarly journals Excited State Frequencies of Chlorophyll f and Chlorophyll a and Evaluation of Displacement through Franck-Condon Progression Calculations

Molecules ◽  
2019 ◽  
Vol 24 (7) ◽  
pp. 1326 ◽  
Author(s):  
Noura Zamzam ◽  
Jasper van Thor
Keyword(s):  
Excited State ◽  
Chlorophyll A ◽  
High Frequency ◽  
Vibrational Mode ◽  
Low Frequency ◽  
State Frequency ◽  
B3lyp Calculations ◽  
Resonant Raman ◽  
Franck Condon ◽  
Chlorophyll F

We present ground and excited state frequency calculations of the recently discovered extremely red-shifted chlorophyll f. We discuss the experimentally available vibrational mode assignments of chlorophyll f and chlorophyll a which are characterised by particularly large downshifts of 131-keto mode in the excited state. The accuracy of excited state frequencies and their displacements are evaluated by the construction of Franck–Condon (FC) and Herzberg–Teller (HT) progressions at the CAM-B3LYP/6-31G(d) level. Results show that while CAM-B3LYP results are improved relative to B3LYP calculations, the displacements and downshifts of high-frequency modes are underestimated still, and that the progressions calculated for low temperature are dominated by low-frequency modes rather than fingerprint modes that are Resonant Raman active.

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