On the arrangement of chromophores in light harvesting complexes: chance versus design

2020 ◽  
Vol 221 ◽  
pp. 133-149 ◽  
Author(s):  
Kirsten Claridge ◽  
Daniele Padula ◽  
Alessandro Troisi
Keyword(s):  
Light Harvesting ◽  
Computational Approach ◽  
Light Harvesting Complexes ◽  
Exciton Dynamics

We used a homogeneous computational approach to derive the excitonic Hamiltonian for five light harvesting complexes containing only one type of chromophore and studied their approximate exciton dynamics.

Exciton dynamics in the light-harvesting complexes of Rhodobacter sphaeroides

1994 ◽  
Vol 224 (3-4) ◽  
pp. 355-365 ◽  
Author(s):  
T. Pullerits ◽  
M. Chachisvilis ◽  
M.R. Jones ◽  
C.N. Hunter ◽  
V. Sundström
Keyword(s):  
Rhodobacter Sphaeroides ◽  
Light Harvesting ◽  
Light Harvesting Complexes ◽  
Exciton Dynamics

Exciton dynamics in ring-like photosynthetic light-harvesting complexes: a hopping model

2004 ◽  
Vol 6 (12) ◽  
pp. 3097 ◽  
Author(s):  
Darius Abramavicius ◽  
Leonas Valkunas ◽  
Rienk van Grondelle
Keyword(s):  
Light Harvesting ◽  
Light Harvesting Complexes ◽  
Exciton Dynamics ◽  
Hopping Model

scholarly journals Noise-Assisted Discord-Like Correlations in Light-Harvesting Photosynthetic Complexes

2021 ◽  
Vol 3 (2) ◽  
pp. 262-271
Author(s):  
Pablo Reséndiz-Vázquez ◽  
Ricardo Román-Ancheyta ◽  
Roberto León-Montiel
Keyword(s):  
Potential Role ◽  
Energy Transport ◽  
Light Harvesting ◽  
Quantum Correlations ◽  
Transport Processes ◽  
Quantum Evolution ◽  
Light Harvesting Complexes ◽  
Transport Efficiency ◽  
Photovoltaic Materials ◽  
Photosynthetic Complexes

Transport phenomena in photosynthetic systems have attracted a great deal of attention due to their potential role in devising novel photovoltaic materials. In particular, energy transport in light-harvesting complexes is considered quite efficient due to the balance between coherent quantum evolution and decoherence, a phenomenon coined Environment-Assisted Quantum Transport (ENAQT). Although this effect has been extensively studied, its behavior is typically described in terms of the decoherence’s strength, namely weak, moderate or strong. Here, we study the ENAQT in terms of quantum correlations that go beyond entanglement. Using a subsystem of the Fenna–Matthews–Olson complex, we find that discord-like correlations maximize when the subsystem’s transport efficiency increases, while the entanglement between sites vanishes. Our results suggest that quantum discord is a manifestation of the ENAQT and highlight the importance of beyond-entanglement correlations in photosynthetic energy transport processes.

scholarly journals Uncovering the interactions driving carotenoid binding in light-harvesting complexes

2021 ◽  
Author(s):  
Vincenzo Mascoli ◽  
Nicoletta Liguori ◽  
Lorenzo Cupellini ◽  
Eduard Elias ◽  
Benedetta Mennucci ◽  
...  
Keyword(s):  
Protein Stability ◽  
Light Harvesting ◽  
Light Harvesting Complexes

Carotenoids are essential constituents of plant light-harvesting complexes (LHCs), being involved in protein stability, light harvesting, and photoprotection. Unlike chlorophylls, whose binding to LHCs is known to require coordination of...

scholarly journals The molecular mechanisms of light adaption in light-harvesting complexes of purple bacteria revealed by a multiscale modeling

2019 ◽  
Vol 10 (42) ◽  
pp. 9650-9662 ◽  
Author(s):  
Felipe Cardoso Ramos ◽  
Michele Nottoli ◽  
Lorenzo Cupellini ◽  
Benedetta Mennucci
Keyword(s):  
Multiscale Modeling ◽  
Molecular Mechanisms ◽  
Light Harvesting ◽  
Purple Bacteria ◽  
Spectral Tuning ◽  
Light Harvesting Complexes

The spectral tuning of LH2 antenna complexes arises from H-bonding, acetyl torsion, and inter-chromophore couplings.

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