Redox Conditions Affect Ultrafast Exciton Transport in Photosynthetic Pigment–Protein Complexes

2017 ◽  
Vol 9 (1) ◽  
pp. 89-95 ◽  
Author(s):  
Marco A. Allodi ◽  
John P. Otto ◽  
Sara H. Sohail ◽  
Rafael G. Saer ◽  
Ryan E. Wood ◽  
...  
Keyword(s):  
Protein Complexes ◽  
Photosynthetic Pigment ◽  
Redox Conditions ◽  
Exciton Transport ◽  
Pigment Protein Complexes

Two-photon excitation spectroscopy of photosynthetic light-harvesting complexes and pigments

2019 ◽  
Vol 216 ◽  
pp. 494-506 ◽  
Author(s):  
Alexander Betke ◽  
Heiko Lokstein
Keyword(s):  
Spectral Region ◽  
Protein Complexes ◽  
Photosynthetic Pigment ◽  
Photon Absorption ◽  
Light Harvesting Complexes ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Photon Excitation ◽  
Pigment Protein Complexes ◽  
Two Photon Excitation

Two-photon excitation (TPE) profiles of LHCII samples containing different xanthophyll complements were measured in the presumed 11Ag− → 21Ag− (S0 → S1) transition region of xanthophylls. Additionally, TPE profiles of Chls a and b in solution and of WSCP, which does not contain carotenoids, were measured. The results indicate that direct two-photon absorption by Chls in the presumed S0 → S1 transition spectral region of carotenoids is dominant over that of carotenoids, with negligible contributions of the latter. These results suggest the re-evaluation of previously published TPE data obtained with photosynthetic pigment–protein complexes containing (B)Chls and carotenoids.

scholarly journals Correlated Protein Environments Drive Quantum Coherence Lifetimes in Photosynthetic Pigment-Protein Complexes

Chem ◽  
2018 ◽  
Vol 4 (1) ◽  
pp. 138-149 ◽  
Author(s):  
Brian S. Rolczynski ◽  
Haibin Zheng ◽  
Ved P. Singh ◽  
Polina Navotnaya ◽  
Alan R. Ginzburg ◽  
...  
Keyword(s):  
Quantum Coherence ◽  
Protein Complexes ◽  
Photosynthetic Pigment ◽  
Pigment Protein Complexes
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