Cited by 137Spectroscopy and Quantum Chemical StudiesPhotochemistry and Electron Transfer StudiesStrong Light-Matter Interactions

Engineering coherence among excited states in synthetic heterodimer systems

Hayes, Dugan, Griffin, Graham B., Engel, Gregory S.·2013·Science

Abstract

The design principles that support persistent electronic coherence in biological light-harvesting systems are obscured by the complexity of such systems. Some electronic coherences in these systems survive for hundreds of femtoseconds at physiological temperatures, suggesting that coherent dynamics may play a role in photosynthetic energy transfer. Coherent effects may increase energy transfer efficiency relative to strictly incoherent transfer mechanisms. Simple, tractable, manipulable model systems are required in order to probe the fundamental physics underlying these persistent electronic coherences, but to date, these quantum effects have not been observed in small molecules. We have engineered a series of rigid synthetic heterodimers that can serve as such a model system and observed quantum beating signals in their two-dimensional electronic spectra consistent with the presence of persistent electronic coherences.

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Crossref · 10.1126/science.1233828

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  • Quantum conductance through photosynthesis protein is enhanced by mechanical vibration, and microtubules appear to have their own mechanical vibrations in megahertz.

    “Quantum conductance through photosynthesis protein is enhanced by mechanical vibration [126], and microtubules appear to have their own set of mechanical vibrations (e.g. in megahertz as suggested by Sahu et al. [88,89]).”

    From Consciousness in the universe (2014) · cites this paper as [126]

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Authors
Hayes, D., Griffin, G. B., & Engel, G. S.
Affiliations
University of Chicago (US)
Corresponding author
Engel, Gregory S.
Venue
Science
Published
2013-06-21
Volume
340
Issue
6139
Pages
1431-1434
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W1971972860
Cited by
137
References
34
Citations by year
2026: 2 · 2025: 4 · 2024: 5 · 2023: 5 · 2022: 10 · 2021: 11 · 2020: 7 · 2019: 9 · 2018: 6 · 2017: 13 · 2016: 9 · 2015: 23 · 2014: 25 · 2013: 8
FWCI
11.14
Type
journal article
Language
en
Open access
closed
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Spectroscopy and Quantum Chemical Studies
  • Physical Sciences › Chemistry › Physical and Theoretical Chemistry › Photochemistry and Electron Transfer Studies
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Strong Light-Matter Interactions
Keywords
electronic coherence, quantum coherence, quantum beats, two-dimensional electronic spectra, photosynthetic energy transfer, light-harvesting complexes, excited states
MeSH terms
Energy Transfer, Fluoresceins, Fourier Analysis, Photosynthesis, Quantum Theory, Spectrometry, Fluorescence, Spectrum Analysis, Dimerization, Light-Harvesting Protein Complexes, Electromagnetic Phenomena

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