title: Ultrafast dynamics of isolated fluorenone.
abstract: The ultrafast dynamics of isolated 9-fluorenone was studied by femtosecond time-resolved photoionization and photoelectron spectroscopy. The molecule was excited around 264-266 nm into the S(6) state. The experimental results indicate that the excitation is followed by a multistep deactivation. A time constant of 50 fs or less corresponds to a fast redistribution of energy within the initially excited manifold of states, i.e., a motion away from the Franck-Condon region. Internal conversion to the S(1) state then proceeds within 0.4 ps. The S(1) state is long-lived, and only a lower bound of 20 ps can be derived. In addition, we computed excited state energies and oscillator strengths by TD-DFT theory, supporting the interpretation of the experimental data.
authors: Institut für Physikalische und Theoretische Chemie, Universität Würzburg, Würzburg.
authors: Juliane
authors: J
authors: Köhler
authors: Patrick
authors: P
authors: Hemberger
authors: Ingo
authors: I
authors: Fischer
authors: Giovanni
authors: G
authors: Piani
authors: Lionel
authors: L
authors: Poisson