研究者情報 | 神奈川大学

イワクラ　イズミ Iwakura Izumi 岩倉　いずみ所属神奈川大学化学生命学部応用化学科神奈川大学大学院工学研究科工学専攻（応用化学領域）職種教授
言語種別	英語
発行・発表の年月	2018/08
形態種別	学術雑誌
査読	査読あり
標題	Direct observation of the change in transient molecular structure of 9,9^'-bianthryl using a 10 fs pulse UV laser.
執筆形態	共著
掲載誌名	Chemical Physics
掲載区分	国外
出版社・発行元	Elsevier
巻・号・頁	512,pp.128-134
担当区分	責任著者
国際共著	国際共著
著者・共著者	Sena Hashimoto, Atsushi Yabushita, Takayoshi Kobayashi, Kotaro Okamura, Izumi Iwakura*
概要	Photoexcitation of 9,9^'-bianthryl has been considered to produce a locally excited (LE) state and then a charge transfer (CT) state by intramolecular charge transfer (ICT) in polar solvents. In contrast, the CT state is considered to be unstable in non-polar solvents and triggers a dipole flip-flop between the two anthracene rings. The central CC bond between the two anthracene rings is considered to twist during relaxation in the LE state and CT state, and this was visualized in the present work using an ultrashort ultraviolet (UV) pulse. The CC stretching frequency was recovered in a period of ca. 500 fs, which implies that the CC bond undergoes repeated torsion back and forth in the electronic excited state. Investigation of samples in a polar solvent and a non-polar solvent indicated that ICT does not affect the torsion around the central CC bond.
DOI	https://doi.org/10.1016/j.chemphys.2017.12.016
researchmap用URL	https://www.sciencedirect.com/science/article/pii/S0301010417308285