ArticleChemical science2019
Before Förster. Initial excitation in photosynthetic light harvesting.
Article in Chemical science, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Article
- Fluorescence-Detected Pump-Probe Spectroscopy for Artifact-Free Detection of Stokes Shift Dynamics.The journal of physical chemistry letters · 2025Article
- Photoelectrochemical Two-Dimensional Electronic Spectroscopy (PEC2DES) of Photosystem I: Charge Separation Dynamics Hidden in a Multichromophoric Landscape.ACS applied materials & interfaces · 2024Article
- Unifying Nonlinear Response and Incoherent Mixing in Action-2D Electronic Spectroscopy.The journal of physical chemistry letters · 2023Article
- Optical cavity-mediated exciton dynamics in photosynthetic light harvesting 2 complexes.Nature communications · 2022Article
- Population and coherence dynamics in large conjugated porphyrin nanorings.Chemical science · 2022Article
- Excited States and Their Dynamics in CdSe Quantum Dots Studied by Two-Color 2D Spectroscopy.The journal of physical chemistry letters · 2022Article
- 2D Electronic Spectroscopic Techniques for Quantum Technology Applications.The journal of physical chemistry. C, Nanomaterials and interfaces · 2021Review
- Rapid multiple-quantum three-dimensional fluorescence spectroscopy disentangles quantum pathways.Nature communications · 2019Article
- Simulating Fluorescence-Detected Two-Dimensional Electronic Spectroscopy of Multichromophoric Systems.The journal of physical chemistry. B · 2019Article
- Article
Corrections and comments
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Electronic 2D spectroscopy allows nontrivial quantum effects to be explored in unprecedented detail. Here, we apply recently developed fluorescence detected coherent 2D spectroscopy to study the light harvesting antenna 2 (LH2) of photosynthetic purple bacteria. We report double quantum coherence 2D spectra which show clear cross peaks indicating correlated excitations. Similar results are found for rephasing and nonrephasing signals. Analysis of signal generating quantum pathways leads to the conclusion that, contrary to the currently prevailing physical picture, the two weakly coupled pigment rings of LH2 share the initial electronic excitation leading to quantum mechanical correlation between the two clearly separate absorption bands. These results are general and have consequences for the interpretation of initially created excited states not only in photosynthesis but in all light absorbing systems composed of weakly interacting pigments where the excitation transfer is commonly described by using Förster theory. Being able to spectrally resolve the nonequilibrium dynamics immediately following photoabsorption may provide a glimpse to the systems' transition into the Förster regime.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.