ArticleChemical science2022
Exciton decay mechanism in DNA single strands: back-electron transfer and ultrafast base motions.
Article in Chemical science, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 11 citations in OpenAlex.
- Strand Structure Controls Photoinduced Self-Repair of RNA Uracil Dimers.The journal of physical chemistry letters · 2026Article
- Feasible Preparation of Naphthalimide-Functionalized Zeolitic Imidazolate Framework-8 for Control, and Fluorescence Detection of Virus: Optimization of Model Study.Journal of fluorescence · 2025Article
- Photoinduced charge separation and DNA self-repair depend on sequence directionality and stacking pattern.Chemical science · 2024Article
- Funneling energy through disorder.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
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Abstract
The photochemistry of DNA systems is characterized by the ultraviolet (UV) absorption of π-stacked nucleobases, resulting in exciton states delocalized over several bases. As their relaxation sensitively depends on local stacking conformations, disentangling the ensuing electronic and structural dynamics has remained an experimental challenge, despite their fundamental role in protecting the genome from potentially harmful UV radiation. Here we use transient absorption and transient absorption anisotropy spectroscopy with broadband femtosecond deep-UV pulses (250-360 nm) to resolve the exciton dynamics of UV-excited adenosine single strands under physiological conditions. Due to the exceptional deep-UV bandwidth and polarization sensitivity of our experimental approach, we simultaneously resolve the population dynamics, charge-transfer (CT) character and conformational changes encoded in the UV transition dipoles of the π-stacked nucleotides. Whilst UV excitation forms fully charge-separated CT excitons in less than 0.3 ps, we find that most decay back to the ground state
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Registered trials
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