Beatings in electronic 2D spectroscopy suggest another role of vibrations in photosynthetic light harvesting.
Pullerits, Tönu LU ; Zigmantas, Donatas LU
and Sundström, Villy
LU
(2013)
In Proceedings of the National Academy of Sciences
110(4).
p.1148-1149
- Abstract
- Light harvesting by photosynthetic organisms is nature’s way to use solar energy for biomass growth. The process starts with light absorption in so-called antenna pigments, and is followed by transfer of the excited-state energy to reaction center proteins, where the energy is converted to an electrochemical gradient across the photosynthetic membrane (1). This potential is used to drive all energy-consuming processes in the photosynthetic organisms. Energy transfer in light harvesting occurs via various transport regimes. The limiting cases are the Förster-type incoherent excitation hopping from pigment to pigment and the exciton relaxation between energy levels, which are coherently delocalized over several antenna molecules. In both... (More)
- Light harvesting by photosynthetic organisms is nature’s way to use solar energy for biomass growth. The process starts with light absorption in so-called antenna pigments, and is followed by transfer of the excited-state energy to reaction center proteins, where the energy is converted to an electrochemical gradient across the photosynthetic membrane (1). This potential is used to drive all energy-consuming processes in the photosynthetic organisms. Energy transfer in light harvesting occurs via various transport regimes. The limiting cases are the Förster-type incoherent excitation hopping from pigment to pigment and the exciton relaxation between energy levels, which are coherently delocalized over several antenna molecules. In both transfer regimes, vibrations play an important role in fulfilling the resonance condition of the rate equations. However, this is not the only way vibrations are used in light harvesting. The article in PNAS by Tiwari et al. (2) discusses the role of anticorrelated nuclear motions in driving energy transfer via nonadiabatic coupling (Fig. 1). The authors argue that the beatings observed in electronic 2D spectroscopy experiments of various antenna complexes are mainly of vibrational origin and provide evidence for this transport mechanism. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3438709
- author
- Pullerits, Tönu
LU
; Zigmantas, Donatas
LU
and Sundström, Villy
LU
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Proceedings of the National Academy of Sciences
- volume
- 110
- issue
- 4
- pages
- 1148 - 1149
- publisher
- National Academy of Sciences
- external identifiers
-
- wos:000314453900014
- pmid:23319614
- scopus:84872863009
- pmid:23319614
- ISSN
- 1091-6490
- DOI
- 10.1073/pnas.1221058110
- 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
- 3f28bffa-355f-4c62-9fb8-7377de06bcc2 (old id 3438709)
- date added to LUP
- 2016-04-01 10:28:24
- date last changed
- 2023-11-09 21:53:14
@article{3f28bffa-355f-4c62-9fb8-7377de06bcc2,
abstract = {{Light harvesting by photosynthetic organisms is nature’s way to use solar energy for biomass growth. The process starts with light absorption in so-called antenna pigments, and is followed by transfer of the excited-state energy to reaction center proteins, where the energy is converted to an electrochemical gradient across the photosynthetic membrane (1). This potential is used to drive all energy-consuming processes in the photosynthetic organisms. Energy transfer in light harvesting occurs via various transport regimes. The limiting cases are the Förster-type incoherent excitation hopping from pigment to pigment and the exciton relaxation between energy levels, which are coherently delocalized over several antenna molecules. In both transfer regimes, vibrations play an important role in fulfilling the resonance condition of the rate equations. However, this is not the only way vibrations are used in light harvesting. The article in PNAS by Tiwari et al. (2) discusses the role of anticorrelated nuclear motions in driving energy transfer via nonadiabatic coupling (Fig. 1). The authors argue that the beatings observed in electronic 2D spectroscopy experiments of various antenna complexes are mainly of vibrational origin and provide evidence for this transport mechanism.}},
author = {{Pullerits, Tönu and Zigmantas, Donatas and Sundström, Villy}},
issn = {{1091-6490}},
language = {{eng}},
number = {{4}},
pages = {{1148--1149}},
publisher = {{National Academy of Sciences}},
series = {{Proceedings of the National Academy of Sciences}},
title = {{Beatings in electronic 2D spectroscopy suggest another role of vibrations in photosynthetic light harvesting.}},
url = {{http://dx.doi.org/10.1073/pnas.1221058110}},
doi = {{10.1073/pnas.1221058110}},
volume = {{110}},
year = {{2013}},
}