Charge transfer mechanisms in organic crystals revealed by intermolecular vibrational excitations

分子间振动激发揭示有机晶体中的电荷转移机制

• 批准号: 24655011
• 负责人: WATANABE Kazuya
• 金额: $ 2.58万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-24655011/
• 关键词: 有機固体; 電子励起状態; コヒーレントフォノン; 超高速分光; 格子振動; 励起状態ダイナミクス; 非線形分光

In this project we aimed to study an effect of phonon mode excitation on an excited state dynamics in organic crystals. We have developed an optical set up that generates femtosecond pulse trains with variable pulse repetition rates in order to excite phonon modes with mode selective fashion. We applied it to singlet fission process in rubrene crystal and investigated the effect of the phonon excitations on the fission rates. We also studied a coherent phonon dynamics in rubrene crystal during the fission process.

本课题旨在研究有机晶体中声子模激发对激发态动力学的影响。我们研制了一种产生飞秒脉冲序列的光学装置，该脉冲序列具有可变的脉冲重复率，以便以模式选择的方式激发声子模式。我们将其应用于红荧烯晶体中的单重态裂变过程，研究了声子激发对裂变速率的影响。我们还研究了红荧烯晶体在裂变过程中的相干声子动力学。

项目成果

Coherent phonon dynamics in singlet fission of rubrene single crystal

红荧烯单晶单重态裂变的相干声子动力学

• 发表时间: 2014
• 作者: Kiyoshi Miyata;Shunsuke Tanaka;Toshiki Sugimoto;Kazuya Watanabe;Yoshiyasu Matsumoto;Takafumi Uemura;Jun Takeya
• 通讯作者: Jun Takeya