Ultrafast Dynamics of the First Excited State of Chlorobenzene

CORC > 武汉物理与数学研究所 > 中国科学院武汉物理与数学研究所 > 2011年以前论文发表（包括2011年）

	Ultrafast Dynamics of the First Excited State of Chlorobenzene
	Liu Yu-Zhu ; Qin Chao-Chao ; Zhang Song ; Wang Yan-Mei ; Zhang Bing 1
刊名	ACTA PHYSICO-CHIMICA SINICA
	2011-04-01
卷号	27 期号:4 页码:965-970
关键词	Photoelectron image Ultrafast process Vibrational energy redistribution Chlorobenzene Nonadiabatic alignment
产权排序	第一
英文摘要	Ultrafast dynamics of the first excited state (S-1) of chlorobenzene was studied using a combination of femtosecond time-resolved photoelectron imaging and time-resolved mass spectroscopy. One-photon absorption at 266.7 nm was used to populate the S-1 state of chlorobenzene. The time evolution of the parent ion signals consists of different biexponential decays. One is a fast component on a timescale of (152 +/- 3) fs and the other is a slow component with a timescale of (749 +/- 21) ps. Time-resolved electron kinetic energies (eKE) and time-resolved photoelectron angular distributions (PADs) were extracted from time-resolved photoelectron imaging and are discussed in detail. The ultrafast process with a time constant of (152 +/- 3) fs is a population transfer within the S-1 state, and only a vibrational energy transfer process with strong coupling is a reasonable explanation. This is attributed to an ultrafast process of dissipative intramolecular vibrational energy redistribution (IVR). The lifetime of the S-1 state was determined to be (749 +/- 21) ps, and its deactivation was due to slow internal conversion to the ground state. Additionally, nonadiabatic alignment and rotational dephasing of the S-1 state of chlorobenzene, as a typical asymmetric top molecule, were observed. The first C-type and J-type recurrences are expected at delay time of 205.8 and 359.3 ps, respectively.
学科主题	化学
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Physical
研究领域[WOS]	Chemistry
关键词[WOS]	PHOTOELECTRON-SPECTROSCOPY ; PHOTODISSOCIATION ; CLUSTERS ; SPECTRA ; CATION ; LASER ; NM
收录类别	SCI
语种	英语
WOS记录号	WOS:000288909800032
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/1859]
专题	武汉物理与数学研究所_2011年以前论文发表（包括2011年）
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.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu Yu-Zhu,Qin Chao-Chao,Zhang Song,et al. Ultrafast Dynamics of the First Excited State of Chlorobenzene[J]. ACTA PHYSICO-CHIMICA SINICA,2011,27(4):965-970.
APA	Liu Yu-Zhu,Qin Chao-Chao,Zhang Song,Wang Yan-Mei,&Zhang Bing.(2011).Ultrafast Dynamics of the First Excited State of Chlorobenzene.ACTA PHYSICO-CHIMICA SINICA,27(4),965-970.
MLA	Liu Yu-Zhu,et al."Ultrafast Dynamics of the First Excited State of Chlorobenzene".ACTA PHYSICO-CHIMICA SINICA 27.4(2011):965-970.