ArticleScience advances2020
Intermolecular vibrations mediate ultrafast singlet fission.
Article in Science advances, 2020. 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.
- Excitonic energy transfer in red algal Photosystem I reveals an evolutionary bridge between cyanobacteria and plants.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Understanding the photochemistry of a crystalline push-pull norbornadiene photoswitch.Chemical science · 2026Article
- Interplay between Mixed and Pure Exciton States Controls Singlet Fission in Rubrene Single Crystals.Journal of the American Chemical Society · 2025Article
- Microstructure determines crystallinity-driven singlet fission efficiency in diF-TES-ADT.Scientific reports · 2025Article
- Machine learning photodynamics decode multiple singlet fission channels in pentacene crystal.Nature communications · 2025Article
- Ultrafast Time-Domain Spectroscopy Reveals Coherent Vibronic Couplings upon Electronic Excitation in Crystalline Organic Thin Films.The journal of physical chemistry letters · 2024Article
- Low- and high-frequency vibrations synergistically enhance singlet exciton fission through robust vibronic resonances.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Theory predicts UV/vis-to-IR photonic down conversion mediated by excited state vibrational polaritons.Nature communications · 2023Article
- Orbital-resolved observation of singlet fission.Nature · 2023Article
- Nanotube Functionalization: Investigation, Methods and Demonstrated Applications.Materials (Basel, Switzerland) · 2022Review
- Towards multistate multimode landscapes in singlet fission of pentacene: the dual role of charge-transfer states.Chemical science · 2021Article
- Time-Resolved Photoelectron Spectroscopy of Conical Intersections with Attosecond Pulse Trains.The journal of physical chemistry letters · 2021Article
- Open questions on the photophysics of ultrafast singlet fission.Communications chemistry · 2021Article
- Nuclear dynamics of singlet exciton fission in pentacene single crystals.Science advances · 2021Article
- Capturing fingerprints of conical intersection: Complementary information of non-adiabatic dynamics from linear x-ray probes.Structural dynamics (Melville, N.Y.) · 2021Article
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Authors and funding
11 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Singlet fission is a spin-allowed exciton multiplication process in organic semiconductors that converts one spin-singlet exciton to two triplet excitons. It offers the potential to enhance solar energy conversion by circumventing the Shockley-Queisser limit on efficiency. We study the primary steps of singlet fission in a pentacene film by using a combination of TG and 2D electronic spectroscopy complemented by quantum chemical and nonadiabatic dynamics calculations. We show that the coherent vibrational dynamics induces the ultrafast transition from the singlet excited electronic state to the triplet-pair state via a degeneracy of potential energy surfaces, i.e., a multidimensional conical intersection. Significant vibronic coupling of the electronic wave packet to a few key intermolecular rocking modes in the low-frequency region connect the excited singlet and triplet-pair states. Along with high-frequency local vibrations acting as tuning modes, they open a new channel for the ultrafast exciton transfer through the resulting conical intersection.
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