Ground-state vibrational coherence in chlorosomes of the green sulfur photosynthetic bacterium Chlorobium phaeobacteroides

Y. Z. Ma; J. Aschenbrücker; M. Miller; T. Gillbro

doi:10.1016/S0009-2614(98)01368-2

Ground-state vibrational coherence in chlorosomes of the green sulfur photosynthetic bacterium Chlorobium phaeobacteroides

Y. Z. Ma, J. Aschenbrücker, M. Miller, T. Gillbro

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

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 S₀-S_n transition, while the probe pulses between 710 and 785 nm monitor the S₀-S₁ transition. The observed oscillations can therefore be ascribed to ground-state vibrational coherence induced by resonant impulsive stimulated Raman scattering.

Original language	English
Pages (from-to)	465-472
Number of pages	8
Journal	Chemical Physics Letters
Volume	300
Issue number	3-4
DOIs	https://doi.org/10.1016/S0009-2614(98)01368-2
State	Published - Feb 5 1999
Externally published	Yes

Funding

Financial support from the Swedish and Danish Natural Research Councils and the EU TMR project “Green Bacterial Photosynthesis” (FMRX-CT96-0081) is gratefully acknowledged. Thanks to Dr. Alisdair N. Macpherson for critical reading of the manuscript and helpful discussions and to the referees for valuable comments.

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title = "Ground-state vibrational coherence in chlorosomes of the green sulfur photosynthetic bacterium Chlorobium phaeobacteroides",

abstract = "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 S0-Sn transition, while the probe pulses between 710 and 785 nm monitor the S0-S1 transition. The observed oscillations can therefore be ascribed to ground-state vibrational coherence induced by resonant impulsive stimulated Raman scattering.",

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AU - Ma, Y. Z.

AU - Aschenbrücker, J.

AU - Miller, M.

AU - Gillbro, T.

PY - 1999/2/5

Y1 - 1999/2/5

N2 - 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 S0-Sn transition, while the probe pulses between 710 and 785 nm monitor the S0-S1 transition. The observed oscillations can therefore be ascribed to ground-state vibrational coherence induced by resonant impulsive stimulated Raman scattering.

AB - 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 S0-Sn transition, while the probe pulses between 710 and 785 nm monitor the S0-S1 transition. The observed oscillations can therefore be ascribed to ground-state vibrational coherence induced by resonant impulsive stimulated Raman scattering.

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JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 3-4

ER -

Ground-state vibrational coherence in chlorosomes of the green sulfur photosynthetic bacterium Chlorobium phaeobacteroides

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