Pump−Probe Polarization Anisotropy Study of Femtosecond Energy Transfer within the Photosynthetic Reaction Center ofRhodobactersphaeroidesR26

1996 ◽  
Vol 100 (30) ◽  
pp. 12660-12673 ◽  
Author(s):  
David M. Jonas ◽  
Matthew J. Lang ◽  
Yutaka Nagasawa ◽  
Taiha Joo ◽  
Graham R. Fleming
Keyword(s):  
Energy Transfer ◽  
Reaction Center ◽  
Photosynthetic Reaction Center ◽  
Polarization Anisotropy ◽  
Pump Probe

scholarly journals Pump Probe Anisotropy Studies of the Photosynthetic Reaction Center

1999 ◽  
Vol 19 (1-4) ◽  
pp. 161-164
Author(s):  
D. C. Arnett ◽  
C. C. Moser ◽  
P. L. Dutton ◽  
N. F. Scherer
Keyword(s):  
Energy Transfer ◽  
Reaction Center ◽  
Charge Separation ◽  
Energy Levels ◽  
Photosynthetic Reaction Center ◽  
Ir Absorption ◽  
Optical Pulses ◽  
Pump Probe ◽  
Special Pair ◽  
Near Ir

The photosynthetic reaction center of Rb. sphaeroides is investigated by unique pump-probe anisotropy methods using 13 fs optical pulses tunable throughout the near IR absorption band. The time and wavelength resolved pump probe anisotropy transients yield detailed experimental descriptions of the energy levels, Py+ and Py- of the excitonically coupled special pair (P), and dynamics prior to charge separation, particularly energy transfer from the accessory bacteriochlorophylla's (B) to the special pair (P).

Ultrafast Energy Transfer Within the Bacterial Photosynthetic Reaction Center

1996 ◽  
pp. 187-198
Author(s):  
D. M. Jonas ◽  
M. J. Lang ◽  
Y. Nagasawa ◽  
S. E. Bradforth ◽  
S. N. Dikshit ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Reaction Center ◽  
Photosynthetic Reaction Center ◽  
Bacterial Photosynthetic Reaction Center

scholarly journals Synergy of light harvesting and energy transfer as well as short-range charge shift reactions in multicomponent conjugates

Nanoscale ◽  
2018 ◽  
Vol 10 (47) ◽  
pp. 22400-22408 ◽  
Author(s):  
Ettore Fazio ◽  
Kim A. Winterfeld ◽  
Ana López-Pérez ◽  
Tomás Torres ◽  
Dirk M. Guldi ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Charge Transfer ◽  
Reaction Center ◽  
Short Range ◽  
Light Harvesting ◽  
Photosynthetic Reaction Center ◽  
Charge Shift

The panchromatic character, and cascade-like charge transfer behaviour of this multichromophoric conjugate, prove it a unique photosynthetic reaction center mimic.

Photosynthesis

2009 ◽  
pp. 573-587
Author(s):  
Julia Adolphs
Keyword(s):  
Energy Transfer ◽  
Excitation Energy ◽  
Reaction Center ◽  
High Efficiency ◽  
Excitation Energy Transfer ◽  
Photosynthetic Reaction Center ◽  
Photochemical Reactions ◽  
Light Harvesting Complexes ◽  
Transition Energies ◽  
Local Transition

This chapter introduces the theory of optical spectra and excitation energy transfer of light harvesting complexes in photosynthesis. The light energy absorbed by protein bound pigments in these complexes is transferred via an exciton mechanism to the photosynthetic reaction center where it drives the photochemical reactions. The protein holds the pigments in optimal orientation for excitation energy transfer and creates an energy sink by shifting the local transition energies of the pigments. In this way, the excitation energy is directed with high efficiency (close to 100 %) to the reaction center. In the present chapter, this energy transfer is studied theoretically. Based on crystal structure data, the excitonic couplings are calculated taking into account also the polarizability of the protein. The local transition energies are obtained by two independent methods and are used to predict the orientation of the FMO protein relative to the reaction center.

scholarly journals Ultrafast Energy Transfer in Chlorosome Probed by Femtosecond Pump-Probe Polarization Anisotropy

2014 ◽  
Vol 35 (3) ◽  
pp. 703-704 ◽  
Author(s):  
Sunhong Jun ◽  
Tae Wu Kim ◽  
Cheolhee Yang ◽  
Megumi Isaji ◽  
Hitoshi Tamiaki ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Polarization Anisotropy ◽  
Pump Probe
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