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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)

Submitter: 関川 太郎

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