Quantum coherence in photosynthesis for efficient solar-energy conversion
Romero, Elisabet ; Augulis, Ramunas LU ; Novoderezhkin, Vladimir I. ; Ferretti, Marco ; Thieme, Jos ; Zigmantas, Donatas LU
and van Grondelle, Rienk
(2014)
In Nature Physics
10(9).
p.677-683
- Abstract
- The crucial step in the conversion of solar to chemical energy in photosynthesis takes place in the reaction centre, where the absorbed excitation energy is converted into a stable charge-separated state by ultrafast electron transfer events. However, the fundamental mechanism responsible for the near-unity quantum efficiency of this process is unknown. Here we elucidate the role of coherence in determining the efficiency of charge separation in the plant photosystem II reaction centre by comprehensively combining experiment (two-dimensional electronic spectroscopy) and theory (Redfield theory). We reveal the presence of electronic coherence between excitons as well as between exciton and charge-transfer states that we argue to be... (More)
- The crucial step in the conversion of solar to chemical energy in photosynthesis takes place in the reaction centre, where the absorbed excitation energy is converted into a stable charge-separated state by ultrafast electron transfer events. However, the fundamental mechanism responsible for the near-unity quantum efficiency of this process is unknown. Here we elucidate the role of coherence in determining the efficiency of charge separation in the plant photosystem II reaction centre by comprehensively combining experiment (two-dimensional electronic spectroscopy) and theory (Redfield theory). We reveal the presence of electronic coherence between excitons as well as between exciton and charge-transfer states that we argue to be maintained by vibrational modes. Furthermore, we present evidence for the strong correlation between the degree of electronic coherence and efficient and ultrafast charge separation. We propose that this coherent mechanism will inspire the development of new energy technologies. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4712920
- author
- Romero, Elisabet
; Augulis, Ramunas
LU
; Novoderezhkin, Vladimir I.
; Ferretti, Marco
; Thieme, Jos
; Zigmantas, Donatas
LU
and van Grondelle, Rienk
- organization
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Nature Physics
- volume
- 10
- issue
- 9
- pages
- 677 - 683
- publisher
- Nature Publishing Group
- external identifiers
-
- wos:000341820700023
- scopus:84904083890
- ISSN
- 1745-2473
- DOI
- 10.1038/NPHYS3017
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)
- id
- 1133f746-9842-4e14-bd49-cfe202a1e1ce (old id 4712920)
- date added to LUP
- 2016-04-01 09:49:09
- date last changed
- 2023-11-09 04:20:26
@article{1133f746-9842-4e14-bd49-cfe202a1e1ce,
abstract = {{The crucial step in the conversion of solar to chemical energy in photosynthesis takes place in the reaction centre, where the absorbed excitation energy is converted into a stable charge-separated state by ultrafast electron transfer events. However, the fundamental mechanism responsible for the near-unity quantum efficiency of this process is unknown. Here we elucidate the role of coherence in determining the efficiency of charge separation in the plant photosystem II reaction centre by comprehensively combining experiment (two-dimensional electronic spectroscopy) and theory (Redfield theory). We reveal the presence of electronic coherence between excitons as well as between exciton and charge-transfer states that we argue to be maintained by vibrational modes. Furthermore, we present evidence for the strong correlation between the degree of electronic coherence and efficient and ultrafast charge separation. We propose that this coherent mechanism will inspire the development of new energy technologies.}},
author = {{Romero, Elisabet and Augulis, Ramunas and Novoderezhkin, Vladimir I. and Ferretti, Marco and Thieme, Jos and Zigmantas, Donatas and van Grondelle, Rienk}},
issn = {{1745-2473}},
language = {{eng}},
number = {{9}},
pages = {{677--683}},
publisher = {{Nature Publishing Group}},
series = {{Nature Physics}},
title = {{Quantum coherence in photosynthesis for efficient solar-energy conversion}},
url = {{http://dx.doi.org/10.1038/NPHYS3017}},
doi = {{10.1038/NPHYS3017}},
volume = {{10}},
year = {{2014}},
}