Ultrafast electronic and vibrational dynamics of a ruthenium porphyrin complex in intersystem crossing

Takayoshi Kobayashi, Izumi Iwakura, Atsushi Yabushita*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Using sub-5fs visible laser pulses, ultrafast time-resolved absorption change was observed for RuII(TPP)(CO) (TPP=5,10,15,20- tetraphenylporphirine) solved in chloroform. Exponential fitting of the time traces estimated decay life times of intermediates as 230±70 fs, 1150±260 fs, 2150±360 fs, and ≫4.8 ps for 1Q x(1,0)(π,π*), 1Qx(0,0)(π, π*), 3(d,π*), and 3(π,π*), respectively. Real-time change of instantaneous molecular vibration frequency was studied by spectrogram analysis, which reflects gradual vibration mode change in the intersystem crossing from singlet state to triplet state.

    Original languageEnglish
    Pages (from-to)24-27
    Number of pages4
    JournalPhysics Procedia
    Volume13
    DOIs
    StatePublished - 1 Jan 2011

    Keywords

    • Absorption change
    • Femtosecond dynamics
    • Intersystem crossing
    • Metallo-porphyrin
    • Pump-probe measurement
    • Ruthenium porphyrin

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