Cited by 594Spectroscopy and Quantum Chemical StudiesPhotosynthetic Processes and MechanismsPhotochemistry and Electron Transfer Studies

Quantum coherence in photosynthesis for efficient solar-energy conversion

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Romero, Elisabet, Augulis, Ramunas, Novoderezhkin, Vladimir I., Ferretti, Marco, Thieme, Jos, Zigmantas, Donatas, van Grondelle, Rienk·2014·Nature Physics

Abstract

The crucial step in the conversion of solar to chemical energy in Photosynthesis takes place in the reaction center 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 (PSII RC) 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 which 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.

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  • Experimental and theoretical evidence shows that single vibrational modes in a statically disordered landscape very likely assist transport in both light harvesting and charge separation in photosynthetic organisms, with the pigment excitonic transitions tuned by the protein scaffold to match the energy of the vibrational mode assisting the resonant transfer.

    “Hence, experimental and theoretical evidence shows that single vibrational modes in a statically disordered landscape very likely assist transport in both light harvesting and charge separation in photosynthetic organisms, with the pigment excitonic transitions tuned by the protein scaffold to match the energy of the vibrational mode assisting the resonant transfer [52,56].”

    From The future of quantum biology (2018) · cites this paper as [56]

  • 2D-ES experiments on the reaction centre of Photosystem II of higher plants have revealed long-lived oscillations of specific cross peaks, interpreted as electronic coherences between excitons as well as between exciton and charge-transfer states.

    “2D-ES experiments on the reaction centre of Photosystem II of higher plants have revealed long-lived oscillations of specific cross peaks, similarly as for light-harvesting complexes, and were interpreted as electronic coherences between excitons as well as between exciton and charge-transfer states (figure 2) [56].”

    From The future of quantum biology (2018) · cites this paper as [56]

  • Strong correlation was observed between the degree of coherence and efficient and ultrafast charge separation.

    “Strong correlation was observed between the degree of coherence and efficient and ultrafast charge separation [56].”

    From The future of quantum biology (2018) · cites this paper as [56]

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Authors
Romero, E., Augulis, R., Novoderezhkin, V. I., Ferretti, M., Thieme, J., Zigmantas, D., & van Grondelle, R.
Affiliations
  • Vrije Universiteit Amsterdam (NL)
  • Lomonosov Moscow State University (RU)
  • Lund University (SE)
Corresponding author
Romero, Elisabet
Venue
Nature Physics
Published
2014-07-13
Volume
10
Issue
9
Pages
676-682
ISSN
  • 1745-2473 (ISSN-L)
  • 1745-2481
OpenAlex
W1977436968
Cited by
594
References
49
Citations by year
2026: 26 · 2025: 36 · 2024: 55 · 2023: 32 · 2022: 31 · 2021: 50 · 2020: 42 · 2019: 52 · 2018: 56 · 2017: 74 · 2016: 69 · 2015: 63 · 2014: 7
FWCI
35.34
Type
journal article
Language
en
Open access
Locations
  • Nature Physics (publishedVersion)
  • PubMed (publishedVersion)
  • VU Research Portal (publishedVersion, other-oa)
  • PubMed Central (acceptedVersion)
  • Lund University Publications (Lund University) (submittedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion, other-oa)
Funders
  • Laserlab-Europe
  • Universiteit van Amsterdam
  • Vrije Universiteit Amsterdam
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Spectroscopy and Quantum Chemical Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Photosynthetic Processes and Mechanisms
  • Physical Sciences › Chemistry › Physical and Theoretical Chemistry › Photochemistry and Electron Transfer Studies
Keywords
quantum coherence, photosynthesis, photosystem II reaction center, charge separation, ultrafast electron transfer, two-dimensional electronic spectroscopy, Redfield theory, vibrational modes, solar energy conversion, quantum efficiency

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