ArticlePhysical chemistry chemical physics : PCCP2015
Singlet-triplet annihilation in single LHCII complexes.
Article in Physical chemistry chemical physics : PCCP, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed.
- LHCSR1 Functions as a Dimmer Switch for Light Harvesting.The journal of physical chemistry letters · 2026Article
- A reexamination of the Kitajima and Butler (1975) model for relating chlorophyllPhotosynthetica · 2026Article
- Light-Harvesting Nanomaterials Based on Dyes for Energy Transfer and Amplified Biosensing.Advanced materials (Deerfield Beach, Fla.) · 2025Review
- Reduction of Exciton Diffusion Length with Genetically Tuned Non-Photochemical Quenching in Plant Thylakoid Membranes.The journal of physical chemistry letters · 2025Article
- Excitation transfer and quenching in photosystem II, enlightened by carotenoid triplet state in leaves.Photosynthesis research · 2024Article
- Energetic driving force for LHCII clustering in plant membranes.Science advances · 2023Article
- Time- and reduction-dependent rise of photosystem II fluorescence during microseconds-long inductions in leaves.Photosynthesis research · 2020Article
- Exploiting racemism enhanced organic room-temperature phosphorescence to demonstrate Wallach's rule in the lighting chiral chromophores.Nature communications · 2020Article
- Variable fluorescence of closed photochemical reaction centers.Photosynthesis research · 2020Article
- Rapidly reversible chlorophyll fluorescence quenching induced by pulses of supersaturating light in vivo.Photosynthesis research · 2019Article
- Microsecond and millisecond dynamics in the photosynthetic protein LHCSR1 observed by single-molecule correlation spectroscopy.Proceedings of the National Academy of Sciences of the United States of America · 2019Article
- Time-resolved fluorescence measurements on leaves: principles and recent developments.Photosynthesis research · 2019Review
- Development of fluorescence quenching in Chlamydomonas reinhardtii upon prolonged illumination at 77 K.Photosynthesis research · 2018Article
- Zeaxanthin-dependent nonphotochemical quenching does not occur in photosystem I in the higher plantProceedings of the National Academy of Sciences of the United States of America · 2017Article
- Light-harvesting Complexes (LHCs) Cluster Spontaneously in Membrane Environment Leading to Shortening of Their Excited State Lifetimes.The Journal of biological chemistry · 2016Article
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5 authors.
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Abstract
In light harvesting complex II (LHCII) of higher plants and green algae, carotenoids (Cars) have an important function to quench chlorophyll (Chl) triplet states and therefore avoid the production of harmful singlet oxygen. The resulting Car triplet states lead to a non-linear self-quenching mechanism called singlet-triplet (S-T) annihilation that strongly depends on the excitation density. In this work we investigated the fluorescence decay kinetics of single immobilized LHCIIs at room temperature and found a two-exponential decay with a slow (3.5 ns) and a fast (35 ps) component. The relative amplitude fraction of the fast component increases with increasing excitation intensity, and the resulting decrease in the fluorescence quantum yield suggests annihilation effects. Modulation of the excitation pattern by means of an acousto-optic modulator (AOM) furthermore allowed us to resolve the time-dependent accumulation and decay rate (∼7 μs) of the quenching species. Inspired by singlet-singlet (S-S) annihilation studies, we developed a stochastic model and then successfully applied it to describe and explain all the experimentally observed steady-state and time-dependent kinetics. That allowed us to distinctively identify the quenching mechanism as S-T annihilation. Quantitative fitting resulted in a conclusive set of parameters validating our interpretation of the experimental results. The obtained stochastic model can be generalized to describe S-T annihilation in small molecular aggregates where the equilibration time of excitations is much faster than the annihilation-free singlet excited state lifetime.
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