ArticleThe Journal of chemical physics2013
Probing energy transfer events in the light harvesting complex 2 (LH2) of Rhodobacter sphaeroides with two-dimensional spectroscopy.
Article in The Journal of chemical physics, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- Trade-offs between light absorption and energy transfer in a marine light-harvesting complex 2.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Theory of photosynthetic membrane influence on B800-B850 energy transfer in the LH2 complex.Biophysical journal · 2025Article
- Optically accessible long-lived electronic biexcitons at room temperature in strongly coupled H- aggregates.Nature communications · 2024Article
- Coarse-Grained Approach to Simulate Signatures of Excitation Energy Transfer in Two-Dimensional Electronic Spectroscopy of Large Molecular Systems.Journal of chemical theory and computation · 2024Article
- Elucidating interprotein energy transfer dynamics within the antenna network from purple bacteria.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Phycobilisome's Exciton Transfer Efficiency Relies on an Energetic Funnel Driven by Chromophore-Linker Protein Interactions.Journal of the American Chemical Society · 2023Article
- Fully Quantum Modeling of Exciton Diffusion in Mesoscale Light Harvesting Systems.Materials (Basel, Switzerland) · 2021Article
- Carotenoid-to-(bacterio)chlorophyll energy transfer in LH2 antenna complexes from Rba. sphaeroides reconstituted with non-native (bacterio)chlorophylls.Photosynthesis research · 2020Article
- Simulating Fluorescence-Detected Two-Dimensional Electronic Spectroscopy of Multichromophoric Systems.The journal of physical chemistry. B · 2019Article
- Impact of the lipid bilayer on energy transfer kinetics in the photosynthetic protein LH2.Chemical science · 2018Article
- Quantum coherence selective 2D Raman-2D electronic spectroscopy.Nature communications · 2017Article
- Communication: Coherences observed in vivo in photosynthetic bacteria using two-dimensional electronic spectroscopy.The Journal of chemical physics · 2015Article
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Authors and funding
5 authors.
Funding
Abstract
Excitation energy transfer events in the photosynthetic light harvesting complex 2 (LH2) of Rhodobacter sphaeroides are investigated with polarization controlled two-dimensional electronic spectroscopy. A spectrally broadened pulse allows simultaneous measurement of the energy transfer within and between the two absorption bands at 800 nm and 850 nm. The phased all-parallel polarization two-dimensional spectra resolve the initial events of energy transfer by separating the intra-band and inter-band relaxation processes across the two-dimensional map. The internal dynamics of the 800 nm region of the spectra are resolved as a cross peak that grows in on an ultrafast time scale, reflecting energy transfer between higher lying excitations of the B850 chromophores into the B800 states. We utilize a polarization sequence designed to highlight the initial excited state dynamics which uncovers an ultrafast transfer component between the two bands that was not observed in the all-parallel polarization data. We attribute the ultrafast transfer component to energy transfer from higher energy exciton states to lower energy states of the strongly coupled B850 chromophores. Connecting the spectroscopic signature to the molecular structure, we reveal multiple relaxation pathways including a cyclic transfer of energy between the two rings of the complex.
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