Excited-State Dynamics of Carotenoids in Light-Harvesting Complexes. 1. Exploring the Relationship between the S1and S* States

2006 ◽  
Vol 110 (11) ◽  
pp. 5727-5736 ◽  
Author(s):  
Emmanouil Papagiannakis ◽  
Ivo H. M. van Stokkum ◽  
Mikas Vengris ◽  
Richard J. Cogdell ◽  
Rienk van Grondelle ◽  
...  
Keyword(s):  
Excited State ◽  
Light Harvesting ◽  
Light Harvesting Complexes ◽  
Excited State Dynamics ◽  
The Relationship ◽  
S States

Excited-State Dynamics of Carotenoids in Light-Harvesting Complexes. 2. Dissecting Pulse Structures from Optimal Control Experiments

2006 ◽  
Vol 110 (11) ◽  
pp. 5737-5746 ◽  
Author(s):  
Emmanouil Papagiannakis ◽  
Mikas Vengris ◽  
Leonas Valkunas ◽  
Richard J. Cogdell ◽  
Rienk van Grondelle ◽  
...  
Keyword(s):  
Optimal Control ◽  
Excited State ◽  
Light Harvesting ◽  
Light Harvesting Complexes ◽  
Excited State Dynamics

Excited state dynamics in light harvesting materials (in honor of Villy Sundström)

2009 ◽  
Vol 357 (1-3) ◽  
pp. 1-3
Author(s):  
Jennifer L. Herek ◽  
Tomáš Polívka ◽  
Rienk van Grondelle ◽  
Tõnu Pullerits
Keyword(s):  
Excited State ◽  
Light Harvesting ◽  
Excited State Dynamics

scholarly journals The Relationship between the Spatial Arrangement of Pigments and Exciton Transition Moments in Photosynthetic Light-Harvesting Complexes

2021 ◽  
Vol 22 (18) ◽  
pp. 10031
Author(s):  
Roman Y. Pishchalnikov ◽  
Denis D. Chesalin ◽  
Andrei P. Razjivin
Keyword(s):  
Light Harvesting ◽  
Purple Bacteria ◽  
Center Of Mass ◽  
Electron Transition ◽  
Spatial Arrangement ◽  
Excitation Energies ◽  
Light Harvesting Complexes ◽  
Exciton Transition ◽  
Transition Moments ◽  
The Relationship

Considering bacteriochlorophyll molecules embedded in the protein matrix of the light-harvesting complexes of purple bacteria (known as LH2 and LH1-RC) as examples of systems of interacting pigment molecules, we investigated the relationship between the spatial arrangement of the pigments and their exciton transition moments. Based on the recently reported crystal structures of LH2 and LH1-RC and the outcomes of previous theoretical studies, as well as adopting the Frenkel exciton Hamiltonian for two-level molecules, we performed visualizations of the LH2 and LH1 exciton transition moments. To make the electron transition moments in the exciton representation invariant with respect to the position of the system in space, a system of pigments must be translated to the center of mass before starting the calculations. As a result, the visualization of the transition moments for LH2 provided the following pattern: two strong transitions were outside of LH2 and the other two were perpendicular and at the center of LH2. The antenna of LH1-RC was characterized as having the same location of the strongest moments in the center of the complex, exactly as in the B850 ring, which actually coincides with the RC. Considering LH2 and LH1 as supermolecules, each of which has excitation energies and corresponding transition moments, we propose that the outer transitions of LH2 can be important for inter-complex energy exchange, while the inner transitions keep the energy in the complex; moreover, in the case of LH1, the inner transitions increased the rate of antenna-to-RC energy transfer.

Structural Control of the Excited-State Dynamics of Bis(dipyrrinato)zinc Complexes:  Self-Assembling Chromophores for Light-Harvesting Architectures

2004 ◽  
Vol 126 (9) ◽  
pp. 2664-2665 ◽  
Author(s):  
Igor V. Sazanovich ◽  
Christine Kirmaier ◽  
Eve Hindin ◽  
Lianhe Yu ◽  
David F. Bocian ◽  
...  
Keyword(s):  
Excited State ◽  
Structural Control ◽  
Light Harvesting ◽  
Zinc Complexes ◽  
Excited State Dynamics ◽  
Self Assembling

The Impact of Twisting on the Intersystem Crossing in Acenes: An Experimental and Computational Study

2022 ◽  
Author(s):  
Partha Malakar ◽  
Veniamin Borin ◽  
Anjan Bedi ◽  
Igor Schapiro ◽  
Ori Gidron ◽  
...  
Keyword(s):  
Excited State ◽  
Electronic Properties ◽  
Light Harvesting ◽  
Computational Study ◽  
Dominant Role ◽  
Intersystem Crossing ◽  
Side Group ◽  
Excited State Dynamics ◽  
Optical And Electronic Properties ◽  
The Impact

Due to their unique excited state dynamics, acenes play a dominant role in optoelectronic and light-harvesting applications. Their optical and electronic properties are typically tailored by side-group engineering, which often...

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