ArticleNature communications2025
Direct observation of ultrafast symmetry reduction during internal conversion of 2-thiouracil using Coulomb explosion imaging.
Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Article
- Time-resolved Coulomb explosion imaging of a photochemical ring opening reaction.Nature communications · 2026Article
- Time-Resolved Laser-Induced Ring-Opening and Dissociation Dynamics in Bromothiophene Isomers.Journal of the American Chemical Society · 2026Article
- Biological applications at the AQUA beamline of the EuPRAXIA@SPARC_LAB free electron laser.European biophysics journal : EBJ · 2026Article
- Generative modeling enables molecular structure retrieval from Coulomb explosion imaging.Nature communications · 2026Article
- Capturing coherent pseudorotation through conical intersection in photoionized benzene.Nature communications · 2025Article
- Exploiting correlations in multi-coincidence Coulomb explosion patterns for differentiating molecular structures using machine learning.Nature communications · 2025Article
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Authors and funding
28 authors.
Funding
Abstract
The photochemistry of heterocyclic molecules plays a decisive role for processes and applications like DNA photo-protection from UV damage and organic photocatalysis. The photochemical reactivity of heterocycles is determined by the redistribution of photoenergy into electronic and nuclear degrees of freedom, initially involving ultrafast internal conversion. Most heterocycles are planar in their ground state and internal conversion requires symmetry breaking. To lower the symmetry, the molecule must undergo an out-of-plane motion, which has not yet been observed directly. Here we show using the example of 2-thiouracil, how Coulomb explosion imaging can be utilized to extract comprehensive information on this molecular deformation, linking the extracted deplanarization of the molecular geometry to the previously studied temporal evolution of its electronic properties. Particularly, the protons of the exploded molecule are well-suited messengers carrying rich information on its geometry at distinct times after electronic excitation. We expect that our new analysis approach centered on these peripheral protons can be adapted as a general concept for future time-resolved studies of complex molecules in the gas phase.
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Registered trials
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