Photochemical reaction mechanisms of 4,5-dimethoxy-2-nitrobenzyl acetate analysed by a sub-10 fs near-ultraviolet pulse laser

Sena Hashimoto, Kenta Hamada, Izumi Iwakura*, Atsushi Yabushita, Takayoshi Kobayashi, Hirotaka Fujita, Kento Takeda, Yuta Ono, Noriko Chikaraishi Kasuga, Kazuo Yamaguchi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The present study examined the electronic dynamics of 4,5-dimethoxy-2-nitrobenzyl acetate after π-π* excitation. Pump-probe measurement using a near-ultraviolet sub-10 fs pulse laser revealed that the lifetime of the S * (π-π*) state is 500 fs after photoexcitation to produce the S * (n-π*) state and that the lifetime of the S * (n-π*) state is 1000 fs. By studying different alpha substituents, the lifetimes of the S * (π-π*) state and the S * (n-π*) were found to be independent on the alpha substituents.

Original languageEnglish
Pages (from-to)70-76
Number of pages7
JournalChemical Physics
Volume524
DOIs
StatePublished - 1 Aug 2019

Keywords

  • O-Nitrobenzyl acetate
  • Photodegradation
  • Real-time spectroscopy
  • Sub-10 fs pulse laser

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