Effect of probe energy and competing pathways on time-resolved photoelectron spectroscopy signals: ring-opening reaction of 1,3-cyclohexadiene

Autor: Tudorovskaya, Maria, Minns, Russell S, Kirrander, Adam
Jazyk: angličtina
Rok vydání: 2018
Zdroj: Tudorovskaya, M, Minns, R S & Kirrander, A 2018, ' Effect of probe energy and competing pathways on time-resolved photoelectron spectroscopy signals: ring-opening reaction of 1,3-cyclohexadiene ', Physical Chemistry Chemical Physics . https://doi.org/10.1039/C8CP02397B
DOI: 10.1039/C8CP02397B
Popis: The ring-opening dynamics of 1,3-cyclohexadiene (CHD) following UV excitation is studied using a model based on quantum molecular dynamics simulations with the ab-initio multiconfigurational Ehrenfest (AI-MCE) method coupled to the Dyson orbital approach for photoionisation cross sections.Time-dependent photoelectron spectra are calculated for probe photon energies in the range 2-15 eV. The calculations demonstrate the value of universal high-energy probes, capable of tracking the full photochemical dynamics of the molecule, as well as the benefit of more selective, lower-energy probes. The predicted signal, especially with the universal probes, becomes highly convoluted due to the contributions from multiple reaction paths, rendering interpretation difficult unless complementary measurements and theoretical comparisons are available.
Databáze: OpenAIRE