scholarly journals Evidence for coherent mixing of excited and charge-transfer states in the major plant light-harvesting antenna, LHCII

2017 ◽  
Vol 19 (34) ◽  
pp. 22877-22886 ◽  
Author(s):  
Charusheela Ramanan ◽  
Marco Ferretti ◽  
Henny van Roon ◽  
Vladimir I. Novoderezhkin ◽  
Rienk van Grondelle
Keyword(s):  
Fourier Transform ◽  
Charge Transfer ◽  
Light Harvesting ◽  
Electronic Spectroscopy ◽  
Low Energy ◽  
Light Harvesting Antenna

2D electronic spectroscopy and Fourier transform maps suggest coherently coupled states at the low-energy edge of the LHCII excitonic manifold.

scholarly journals Complete mapping of energy transfer pathways in the plant light-harvesting complex Lhca4

2020 ◽  
Vol 22 (44) ◽  
pp. 25720-25729
Author(s):  
Martijn Tros ◽  
Vladimir I. Novoderezhkin ◽  
Roberta Croce ◽  
Rienk van Grondelle ◽  
Elisabet Romero
Keyword(s):  
Energy Transfer ◽  
Charge Transfer ◽  
Light Harvesting ◽  
Electronic Spectroscopy ◽  
Low Energy ◽  
Charge Transfer State ◽  
Two Dimensional ◽  
Light Harvesting Complex ◽  
Complete Mapping ◽  
Transfer State

New insights on Lhca4 from two-dimensional electronic spectroscopy and modelling: population of the charge-transfer state and newly identified low-energy trap.

scholarly journals Microscopic quantum coherence in a photosynthetic-light-harvesting antenna

2012 ◽  
Vol 370 (1972) ◽  
pp. 3672-3691 ◽  
Author(s):  
Jahan M. Dawlaty ◽  
Akihito Ishizaki ◽  
Arijit K. De ◽  
Graham R. Fleming
Keyword(s):  
Single Molecule ◽  
Quantum Coherence ◽  
Energy Transport ◽  
Light Harvesting ◽  
Electronic Spectroscopy ◽  
Coherent Motion ◽  
Quantum Beats ◽  
Ensemble Averaging ◽  
Light Harvesting Antenna

We briefly review the coherent quantum beats observed in recent two-dimensional electronic spectroscopy experiments in a photosynthetic-light-harvesting antenna. We emphasize that the decay of the quantum beats in these experiments is limited by ensemble averaging. The in vivo dynamics of energy transport depends upon the local fluctuations of a single photosynthetic complex during the energy transfer time (a few picoseconds). Recent analyses suggest that it remains possible that the quantum-coherent motion may be robust under individual realizations of the environment-induced fluctuations contrary to intuition obtained from condensed phase spectroscopic measurements and reduced density matrices. This result indicates that the decay of the observed quantum coherence can be understood as ensemble dephasing. We propose a fluorescence-detected single-molecule experiment with phase-locked excitation pulses to investigate the coherent dynamics at the level of a single molecule without hindrance by ensemble averaging. We discuss the advantages and limitations of this method. We report our initial results on bulk fluorescence-detected coherent spectroscopy of the Fenna–Mathews–Olson complex.

Charge-Transfer Character of the Low-Energy Chl a Qy Absorption Band in Aggregated Light Harvesting Complexes II

2014 ◽  
Vol 118 (23) ◽  
pp. 6086-6091 ◽  
Author(s):  
Adam Kell ◽  
Ximao Feng ◽  
Chen Lin ◽  
Yiqun Yang ◽  
Jun Li ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Absorption Band ◽  
Light Harvesting ◽  
Low Energy ◽  
Light Harvesting Complexes ◽  
Chl A

scholarly journals Excitation energy transfer and equilibration process in LHCII studied by multidimensional electronic spectroscopy

2019 ◽  
Vol 205 ◽  
pp. 09038
Author(s):  
Thanh Nhut Do ◽  
Adriana Huerta-Viga ◽  
Cheng Zhang ◽  
Parveen Akhtar ◽  
Pawei J. Nowakowski ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Light Harvesting ◽  
Electronic Spectroscopy ◽  
Excitation Energy Transfer ◽  
Phenomenological Analysis ◽  
Two Dimensional ◽  
Light Harvesting Complex ◽  
Light Harvesting Complex Ii ◽  
Equilibration Process ◽  
Light Harvesting Antenna

Light-harvesting complex II (LHCII) – the light-harvesting antenna of Photosystem II – is a naturally abundant system that plays an important role in photosynthesis. In this study, we present a phenomenological analysis of the excitonic energy transfer in LHCII using ultrafast two-dimensional electronic spectroscopy, that we find compares well with previous theoretical and experimental results.

scholarly journals Efficacious elimination of intramolecular charge transfer in perylene imide based light-harvesting antenna molecules

2020 ◽  
Vol 56 (41) ◽  
pp. 5560-5563
Author(s):  
Rajeev K. Dubey ◽  
Damla Inan ◽  
Abbey M. Philip ◽  
Ferdinand C. Grozema ◽  
Wolter F. Jager
Keyword(s):  
Charge Transfer ◽  
Light Harvesting ◽  
Intramolecular Charge Transfer ◽  
Complete Suppression ◽  
Perylene Dye ◽  
Light Harvesting Antenna ◽  
Antenna Systems

A new design for the perylene dye-based light-harvesting antenna systems is presented, which enables complete suppression of parasitic intramolecular charge-transfer.

Directing charge transfer in perylene based light-harvesting antenna molecules

2020 ◽  
Vol 153 (14) ◽  
pp. 144302
Author(s):  
Abbey M. Philip ◽  
Chao Chun Hsu ◽  
Zimu Wei ◽  
Magnus B. Fridriksson ◽  
Ferdinand C. Grozema ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Light Harvesting ◽  
Light Harvesting Antenna

scholarly journals The Origin of the Low-Energy Form of Photosystem I Light-Harvesting Complex Lhca4: Mixing of the Lowest Exciton with a Charge-Transfer State

2009 ◽  
Vol 96 (5) ◽  
pp. L35-L37 ◽  
Author(s):  
Elisabet Romero ◽  
Milena Mozzo ◽  
Ivo H.M. van Stokkum ◽  
Jan P. Dekker ◽  
Rienk van Grondelle ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Photosystem I ◽  
Light Harvesting ◽  
Low Energy ◽  
Charge Transfer State ◽  
Light Harvesting Complex ◽  
A Charge ◽  
Transfer State

scholarly journals Blue rhenium tricarbonyl DPPZ complexes – low energy charge-transfer absorption at tissue-penetrating wavelengths

2016 ◽  
Vol 52 (84) ◽  
pp. 12498-12501 ◽  
Author(s):  
M. P. Coogan ◽  
J. A. Platts
Keyword(s):  
Photodynamic Therapy ◽  
Charge Transfer ◽  
Light Harvesting ◽  
Energy Charge ◽  
Low Energy ◽  
Absorption Bands ◽  
Amido Complexes ◽  
Rhenium Tricarbonyl

Re and Mn DPPZ amido complexes show absorption bands with potential for light harvesting and photodynamic therapy.

Sign in / Sign up

Export Citation Format

Share Document