外文题目: Ultrafast dynamics of multi-exciton state coupled to coherent vibration in zinc chlorin aggregates for artificial photosynthesis
作者: Shi, Tongchao; Liu, Zhengzheng; Miyatake, Tomohiro; Tamiaki, Hitoshi; Kobayashi, Takayoshi; Zhang, Zeyu; Du, Juan; Leng, Yuxin
刊名: Opt. Express
年: 2017 卷: 25 期: 24 页： 29667--29675
英文关键词:

2-DIMENSIONAL ELECTRONIC SPECTROSCOPY; OPTICAL PARAMETRIC AMPLIFICATION; LASER SPECTROSCOPY; ENERGY-TRANSFER; SUB-5-FS SPECTROSCOPY; TRANSIENT ABSORPTION; SYNTHETIC ZINC; CHLOROPHYLL-A; CHLOROSOMES; SYSTEMS
英文摘要:
Ultrafast vibronic dynamics induced by the interaction of the Frenkel exciton with the coherent molecular vibrations in a layer-structured zinc chlorin aggregates prepared for artificial photosynthesis have been studied by 7.1 fs real-time vibrational spectroscopy with multi-spectrum detection. The fast decay of 100 +/- 5fs is ascribed to the relaxation from the higher multi-exciton state (MES) to the one-exciton state, and the slow one of 863 +/- 70fs is assigned to the relaxation from Q-exciton state to the dark nonfluorescent charge-transfer (CT) state, respectively. In addition, the wavelength dependences of the exciton-vibration coupling strength are found to follow the zeroth derivative of the transient absorption spectra of the exciton. It could be explained in term of the transition dipole moment modulated by dynamic intensity borrowing between the B transition and the Q transition through the vibronic interactions. (C) 2017 Optical Society of America under the terms of the OSA Open Access Publishing Agreement


文献类型: 期刊论文
正文语种: English
收录类别: SCI
DOI: 10.1364/OE.25.029667


全文传递服务