EPJ Web of Conferences (Jan 2019)

UV-light induced vibrational coherences explain Kasha rule violation in frans-azobenzene

  • Nenov Artur,
  • Borrego-Varillas Rocio,
  • Oriana Aurelio,
  • Ganzer Lucia,
  • Segatta Francesco,
  • Conti Irene,
  • Manzoni Cristian,
  • Cerullo Giulio,
  • Garavelli Marco

DOI
https://doi.org/10.1051/epjconf/201920509016
Journal volume & issue
Vol. 205
p. 09016

Abstract

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Sub-20-fs transient absorption spectroscopy and simulations show that CNN-bendings dominate the sub-ps dynamics of ππ*-excited trans-azobenzene, thereby driving the system to the ground state through a non-productive decay channel in violation of the Kasha rule.