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ファイル | 記述 | サイズ | フォーマット | |
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j.chemphys.2012.04.004.pdf | 1.16 MB | Adobe PDF | 見る/開く |
タイトル: | Internal conversion in the S_1^1B_[3u] state of pyrene |
著者: | Kowaka, Yasuyuki Nakayama, Naofumi Ishimoto, Takayoshi Nagashima, Umpei Yamanaka, Takaya Ozawa, Norifumi Baba, Masaaki |
著者名の別形: | 馬場, 正昭 |
キーワード: | Pyrene Fluorescence lifetime Internal conversion Ab initio theoretical calculation Molecular structure |
発行日: | May-2012 |
出版者: | Elsevier B.V. |
誌名: | Chemical Physics |
巻: | 400 |
開始ページ: | 178 |
終了ページ: | 184 |
抄録: | Fluorescence excitation spectra and fluorescence lifetimes at single vibronic levels in the S_1 state have been observed for jet-cooled pyrene. The fluorescence lifetimes at the zero-vibrational levels of the S_1^1B_[3u] states of pyrene-h_10 and pyrene-d10 are 1480 and 1470 ns, respectively, and the relaxation is considered to be dominated by the radiative process. For some vibrational levels, however, the lifetimes are remarkably shorter such as 765 ns at the 22^1 vibronic level of pyrene-h_10 (ν22 (b_[1g]); C–H bending and skeletal deforming mode), indicating that nonradiative transition occurs at a specific vibrational level. In this study, we demonstrate that the main process is internal conversion to the S_0^1Ag state caused by nonadiabatic vibronic interaction via b_[3u] promoting modes. |
著作権等: | © 2012 Elsevier B.V. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/156170 |
DOI(出版社版): | 10.1016/j.chemphys.2012.04.004 |
出現コレクション: | 学術雑誌掲載論文等 |
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