Ultrafast excited-state dynamics of 2,4-dimethylpyrrole

	Ultrafast excited-state dynamics of 2,4-dimethylpyrrole
	Dai, Dongxu 1,2; Yang, Xueming 1,2; Wu, Guorong 1,2; Yuan, Kaijun 1; Min, Yanjun 1,3; Wang, Hengding 1,3; He, Zhigang 1; Chen, Zhichao 1; Yang, Dongyuan 1,3
刊名	PHYSICAL CHEMISTRY CHEMICAL PHYSICS
	2017-11-21
卷号	19 期号:43 页码:29146-29152
英文摘要	The ultrafast excited-state dynamics of 2,4-dimethylpyrrole following excitation at wavelengths in the range of 255.8-199.7 nm are studied using the time-resolved photoelectron imaging method. It is found that excitation at longer wavelengths (255.8, 250.0, 246.0 and 242.0 nm) results in population of the S-1((1)pi sigma) state, which decays out of the photoionization window in less than 30 fs. At 237.7 nm, the second 1 ps state is excited, which decays in about 130 fs. At shorter pump wavelengths (231.8, 224.8, 217.5 and 199.7 nm), the assignments are less clear-cut. We tentatively assign the initially photoexcited states to the (1)pi 3p Rydberg states, which decay in about 60 fs, with internal conversion to the S1(1 ps*) state as one of the decay channels. The lifetimes of these (1)pi 3p Rydberg states vary little with the pump wavelengths in this wavelength range.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Physical ; Physics, Atomic, Molecular & Chemical
研究领域[WOS]	Chemistry ; Physics
关键词[WOS]	REPULSIVE (1)PI-SIGMA-ASTERISK STATES ; ATOM ELIMINATION ; PYRROLE ; PHOTODISSOCIATION ; DISSOCIATION ; MOLECULES ; PHOTOCHEMISTRY ; SPECTROSCOPY ; BIOMOLECULES ; SYMMETRY
收录类别	SCI
语种	英语
WOS记录号	WOS:000414773100014
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/149728]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Dalian Inst Chem Phys, State Key Lab Mol React Dynam, 457 Zhongshan Rd, Dalian 116023, Liaoning, Peoples R China 2.Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Anhui, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Dai, Dongxu,Yang, Xueming,Wu, Guorong,et al. Ultrafast excited-state dynamics of 2,4-dimethylpyrrole[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2017,19(43):29146-29152.
APA	Dai, Dongxu.,Yang, Xueming.,Wu, Guorong.,Yuan, Kaijun.,Min, Yanjun.,...&Yang, Dongyuan.(2017).Ultrafast excited-state dynamics of 2,4-dimethylpyrrole.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,19(43),29146-29152.
MLA	Dai, Dongxu,et al."Ultrafast excited-state dynamics of 2,4-dimethylpyrrole".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 19.43(2017):29146-29152.