Real-time observation of cascaded electronic relaxation processes in p-Fluorotoluene
文献类型：期刊论文
| 作者 | Zhang, Bing1,2; Abulimiti, Bumaliya3; Wang, Yanmei1,2; Long, Jinyou1,2; Deng, Xulan1,2; Hao, Qiaoli1,2 |
| 刊名 | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
 |
| 出版日期 | 2017-08-05 |
| 卷号 | 183页码:109-115 |
| 关键词 | Pump-probe Photoelectron Imaging Spectroscopy Internal Conversion Channel Three Accidental Resonance |
| DOI | 10.1016/j.saa.2017.04.028 |
| 文献子类 | Article |
| 英文摘要 | Ultrafast electronic relaxation processes following two photoexcitation of 400 nm in p-Fluorotoluene (pFT) have been investigated utilizing time-resolved photoelectron imaging coupled with time-resolved mass spectroscopy. Cascaded electronic relaxation processes started from the electronically excited S-2 state are directly imaged in real time and well characterized by two distinct time constants of similar to 85 +/- 10 fs and 2.4 +/- 0.3 ps. The rapid component corresponds to the lifetime of the initially excited S-2 state, including the structure relaxation from the Franck Condon region to the conical intersection of S-2/S-1 and the subsequent internal conversion to the highly excited S-1 state. While, the slower relaxation constant is attributed to the further internal conversion to the high levels of So from the secondarily populated S-1 locating in the channel three region. Moreover, dynamical differences with benzene and toluene of analogous structures, including, specifically, the slightly slower relaxation rate of S-2 and the evidently faster decay of S-1, are also presented and tentatively interpreted as the substituent effects. In addition, photoelectron kinetic energy and angular distributions reveal the feature of accidental resonances with lowlying Rydberg states (the 3p, 4s and 4p states) during the multi-photon ionization process, providing totally unexpected but very interesting information for pFT. (C) 2017 Elsevier B.V. All rights reserved. |
| WOS关键词 | RESOLVED PHOTOELECTRON-SPECTROSCOPY ; ULTRAFAST INTERNAL-CONVERSION ; HIGHLY EXCITED TOLUENE ; CHANNEL 3 REGION ; BENZENE DIMER ; DYNAMICS ; STATES ; REDISTRIBUTION ; SPECTRA |
| WOS研究方向 | Spectroscopy |
| 语种 | 英语 |
| WOS记录号 | WOS:000403130900015 |
| 资助机构 | National Basic Research Program of China(2013CB922200) ; National Basic Research Program of China(2013CB922200) ; National Natural Science Foundation of China(21273274 ; National Natural Science Foundation of China(21273274 ; 11564040 ; 11564040 ; 21573279) ; 21573279) ; National Basic Research Program of China(2013CB922200) ; National Basic Research Program of China(2013CB922200) ; National Natural Science Foundation of China(21273274 ; National Natural Science Foundation of China(21273274 ; 11564040 ; 11564040 ; 21573279) ; 21573279) |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/11490]  |
| 专题 | 武汉物理与数学研究所_原子分子光物理研究部 |
| 作者单位 | 1.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Xinjiang Normal Univ, Coll Phys & Elect Engn, Urumqi 830054, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Bing,Abulimiti, Bumaliya,Wang, Yanmei,et al. Real-time observation of cascaded electronic relaxation processes in p-Fluorotoluene[J]. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,2017,183:109-115. |
| APA | Zhang, Bing,Abulimiti, Bumaliya,Wang, Yanmei,Long, Jinyou,Deng, Xulan,&Hao, Qiaoli.(2017).Real-time observation of cascaded electronic relaxation processes in p-Fluorotoluene.SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,183,109-115. |
| MLA | Zhang, Bing,et al."Real-time observation of cascaded electronic relaxation processes in p-Fluorotoluene".SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 183(2017):109-115. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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