A model two-dimensional potential for internal rotation of 9-methylanthracene studied by electronic spectroscopy and DFT calculations

Masayuki Nakagaki, Eriko Nishi, Kenji Sakota, Haruyuki Nakano, Hiroshi Sekiya

研究成果: Contribution to journalArticle査読

7 被引用数 (Scopus)

抄録

The S1-S0 fluorescence excitation and dispersed fluorescence spectra of 9-methylanthracene are measured in a supersonic free jet expansion. Several low-frequency bands assigned to the transitions between the internal rotational levels of the methyl group can not be fitted to the calculated energy levels obtained by the one-dimensional rotor model. We have introduced a two-dimensional model incorporating the coupling of the methyl rotation and an out-of-plane bending motion of the anthracene ring. The calculations based on this model reproduce the intensity distributions in the fluorescence excitation and dispersed fluorescence spectra as well as the frequencies of the internal rotational levels in the S0 and S1 state.

本文言語英語
ページ(範囲)190-196
ページ数7
ジャーナルChemical Physics
328
1-3
DOI
出版ステータス出版済み - 9 29 2006

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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