Stuart A. Hayes
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Stuart A. Hayes has a total of 7 co-authors. Here are the top co-authors by number of shared publications:
- Alexander Marx
Max Planck Institute for the Structure and Dynamics of Matter
1 shared publication - Carole A. Morrison
EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, UK
1 shared publication - Cheng Lu
University of Toronto
1 shared publication - Gastón Corthey
Max Planck Institute for the Structure and Dynamics of Matter
1 shared publication - Hazem Daoud
University of Toronto
1 shared publication - R. J. Dwayne Miller
The Departments of Chemistry and Physics, University of Toronto, 80 St. George Street, Toronto M5S 3H6, Canada
1 shared publication
Latest Publications
- Open Access
- 1 July 2025
- Published by American Chemical Society (ACS) in ChemRxiv
Atomic Trajectories of a Bimolecular Reaction Visualized by Ultrafast Electron Diffraction
Bimolecular reactions are ubiquitous in chemistry, but it is exceptionally difficult to resolve the motion of atoms for such processes on the ultrafast timescales that the breaking and creation of chemical bonds occur. Detecting small changes in atom positions requires high temporal and spatial resolution and reliable signal-to-noise characteristics. Here, we have exploited solid-state alignment to track a photoinduced bimolecular disproportionation reaction that transforms two pairs of adjacent triiodide anions into the metastable tetraiodide molecule and the diiodide fragment. We use ultrafast electron diffraction and dynamic structure refinement, where the atomic displacements are directly reconstructed from the diffraction data with plausible restraints on the atomic trajectories starting from the known ground-state structure. The excited-state structures are supported by theoretical calculations in the solid state and the reaction courses show clear site dependence on the ultrafast timescale. Our results provide a close-up view of the atomic motions involved in this classic reaction in real time, from bond elongation to breaking at the parent ion, to collision and subsequent bond formation of the liberated I atom with the neighbouring triiodide, all within a picosecond.
- 1 July 2025
- Published by American Chemical Society (ACS) in ChemRxiv
Open AccessAtomic Trajectories of a Bimolecular Reaction Visualized by Ultrafast Electron Diffraction
Bimolecular reactions are ubiquitous in chemistry, but it is exceptionally difficult to resolve the motion of atoms for such processes on the ultrafast timescales that the breaking and creation of chemical bonds occur. Detecting small changes in atom positions requires high temporal and spatial resolution and reliable signal-to-noise characteristics. Here, we have exploited solid-state alignment to track a photoinduced bimolecular disproportionation reaction that transforms two pairs of adjacent triiodide anions into the metastable tetraiodide molecule and the diiodide fragment. We use ultrafast electron diffraction and dynamic structure refinement, where the atomic displacements are directly reconstructed from the diffraction data with plausible restraints on the atomic trajectories starting from the known ground-state structure. The excited-state structures are supported by theoretical calculations in the solid state and the reaction courses show clear site dependence on the ultrafast timescale. Our results provide a close-up view of the atomic motions involved in this classic reaction in real time, from bond elongation to breaking at the parent ion, to collision and subsequent bond formation of the liberated I atom with the neighbouring triiodide, all within a picosecond.