Full observation of ultrafast cascaded radiationless transitions from S2(ππ∗) state of pyrazine using vacuum ultraviolet photoelectron imaging

• 堀尾, 琢哉

  Department of Chemistry, Graduate School of Science, Kyoto University

• 鈴木, 俊法

  Department of Chemistry, Graduate School of Science, Kyoto University

• Nagashima, Kazuki

  Department of Chemistry, Graduate School of Science, Kyoto University

• Ingle, Rebecca A.

  Department of Chemistry, Graduate School of Science, Kyoto University

• Suzuki, Yoshi Ichi

  Department of Chemistry, Graduate School of Science, Kyoto University

• Suzuki, Toshinori

  Department of Chemistry, Graduate School of Science, Kyoto University

書誌事項

タイトル別名

• Full observation of ultrafast cascaded radiationless transitions from S2(ππ-) state of pyrazine using vacuum ultraviolet photoelectron imaging

抄録

A photoexcited molecule undergoes multiple deactivation and reaction processes simultaneously or sequentially, which have been observed by combinations of various experimental methods. However, a single experimental method that enables complete observation of the photo-induced dynamics would be of great assistance for such studies. Here we report a full observation of cascaded electronic dephasing from S2(ππ∗) in pyrazine (C4N2H4) by time-resolved photoelectron imaging (TRPEI) using 9.3-eV vacuum ultraviolet pulses with a sub-20 fs time duration. While we previously demonstrated a real-time observation of the ultrafast S2(ππ∗) → S1(nπ∗) internal conversion in pyrazine using TRPEI with UV pulses, this study presents a complete observation of the dynamics including radiationless transitions from S1 to S0 (internal conversion) and T1(nπ∗) (intersystem crossing). Also discussed are the role of 1Au(nπ∗) in the internal conversion and the configuration interaction of the S2(ππ∗) electronic wave function.

収録刊行物

• Journal of Chemical Physics

  Journal of Chemical Physics 145 (4), 044306-, 2016-07-28

  American Institute of Physics

キーワード

• Physical and Theoretical Chemistry
• General Physics and Astronomy

詳細情報

• CRID: 1050564285808237056
• NII論文ID: 120006414209
• ISSN: 00219606
• ISSN: 10897690
• DOI: 10.1063/1.4955296
• HANDLE: 2433/230212
• Web Site: https://pubs.aip.org/aip/jcp/article-pdf/doi/10.1063/1.4955296/15516751/044306_1_online.pdf
• 本文言語コード: en
• 資料種別: journal article
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