Groundstate vibrational coherence in chlorosomes of the green sulfur photosynthetic bacterium Chlorobium phaeobacteroides
| Autor: | Ying-Zhong Ma, Mette Miller, J. Aschenbrücker, Tomas Gillbro |
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| Jazyk: | angličtina |
| Rok vydání: | 1999 |
| Předmět: | |
| Zdroj: | Ma, Y-Z, Aschenbrucker, J, Miller, M & Gillbro, T 1999, ' Groundstate vibrational coherence in chlorosomes of the green sulfur photosynthetic bacterium Chlorobium phaeobacteroides ', Chemical Physics Letters, vol. 300, pp. 465-472 . |
| Popis: | Femtosecond transient absorption measurements have been performed on the bacteriochlorophyll e -containing chlorosomes of Chlorobium phaeobacteroides . Oscillations superimposed on the initial part of the kinetics and damped within 2 ps were observed. The Fourier power spectra revealed low-frequency vibrational modes in the range of 45–130 cm −1 . The pump pulses centred at 425, 490 and 530 nm are in resonance with the S 0 –S n transition, while the probe pulses between 710 and 785 nm monitor the S 0 –S 1 transition. The observed oscillations can therefore be ascribed to ground-state vibrational coherence induced by resonant impulsive stimulated Raman scattering. |
| Databáze: | OpenAIRE |
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