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Structural dynamics of photochemical reactions probed by time-resolved photoelectron spectroscopy using high harmonic pulses
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| Title: | Structural dynamics of photochemical reactions probed by time-resolved photoelectron spectroscopy using high harmonic pulses |
| Authors: | Iikubo, Ryo Browse this author | | Sekikawa, Taro Browse this author →KAKEN DB | | Harabuchi, Yu Browse this author | | Taketsugu, Tetsuya Browse this author →KAKEN DB |
| Issue Date: | 31-May-2016 |
| Publisher: | Royal Society of Chemistry |
| Journal Title: | Faraday discussions |
| Volume: | 194 |
| Start Page: | 147 |
| End Page: | 160 |
| Publisher DOI: | 10.1039/c6fd00063k |
| PMID: | 27711881 |
| Abstract: | Femtosecond ring-opening dynamics of 1,3-cyclohexadiene (CHD) in gas phase upon two-photon excitation at 400 nm (=3.1 eV) was investigated by time-resolved photoelectron spectroscopy using 42 nm (=29.5 eV) high harmonic photons probing the dynamics of the lower-lying occupied molecular orbitals (MOs), which are the fingerprints of the molecular structure. After 500 fs, the photoelectron intensity of the MO constituting the C=C sigma bond (sigma(C=C)) of CHD was enhanced, while that of the MO forming the C-C sigma bond (sigma(CC)) of CHD was decreased. The changes in the photoelectron spectra suggest that the ring of CHD opens to form a 1,3,5-hexatriene (HT) after 500 fs. The dynamics of the sigma(C=C) and sigma(CC) bands between 200 and 500 fs reflects the ring deformation to a conical intersection between the 2(1)A and 1(1)A potential energy surfaces prior to the ring-opening reaction. |
| Rights: | https://creativecommons.org/licenses/by/3.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/64667 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 関川 太郎
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