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	2021/11
形態種別	学術雑誌
査読	査読あり
標題	Ultrafast charge transfer dynamics in the excited state of DCM measured by a 6-fs UV pulse 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	551,pp.111326 (5P)
担当区分	責任著者
著者・共著者	Sena Hashimoto, Rikako Takagi, Kotaro Okamura, Atsushi Yabushita, Takayoshi Kobayashi, _{Izumi Iwakura*}
概要	The photoexcited dynamics of a laser dye, 4-(dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran (DCM), in an acetonitrile solution and a dimethyl sulfoxide (DMSO) solution were studied by pump-probe spectroscopy with a 6-fs ultraviolet laser. UV light excites the DCM solved in any of acetonitrile or DMSO into locally excited (LE) state (via S₀->S₂ excitation), then the LE state relaxes to a charge transfer state. In the previous study, the mechanism of transition from the LE state to the intramolecular charge transfer (ICT) state was not clear just known to proceed faster than 100 fs. Our present work has clarified the primary process determining the time constant (LE->ICT state) to be 50 fs. Spectral analysis of the transient difference-absorption spectrum has shown that the locally excited state has a stimulated emission peak at 2.9 eV.
DOI	https://doi.org/10.1016/j.chemphys.2021.111326
researchmap用URL	https://www.sciencedirect.com/science/article/pii/S0301010421002378