Probing competing relaxation pathways in malonaldehyde with transient X-ray absorption spectroscopy
Nanna Holmgaard List, Adrian L. Dempwolff, Andreas Dreuw, Patrick Norman, Todd J. Martı́nez
Abstract
(ππ*) is detectable from reappearance of the double pre-edge signature and reversed intensities. Moreover, the torsional deactivation pathway induces transient charge redistribution from the enol side towards the central C-atom and manifests itself as substantial shifts of the pre-edge features. Given the continuous advances in X-ray light sources, our study proposes an experimental route to disentangle ultrafast excited-state decay channels in this prototypical ESIHT system and provides a pathway-specific mapping of the TRXAS signal to facilitate the interpretation of future experiments.
Topics & Concepts
Relaxation (psychology)Ultrafast laser spectroscopyTransient (computer programming)Absorption (acoustics)SpectroscopyAbsorption spectroscopyChemistryX-ray absorption spectroscopyPhotochemistryChemical physicsAnalytical Chemistry (journal)Materials sciencePhysicsOpticsOrganic chemistryComputer scienceSocial psychologyQuantum mechanicsComposite materialPsychologyOperating systemPhotochemistry and Electron Transfer StudiesElectrochemical Analysis and ApplicationsSpectroscopy and Quantum Chemical Studies