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Ultrafast excited-state dynamics of 2,4-dimethylpyrrole
Yang, Dongyuan1,2; Chen, Zhichao1; He, Zhigang1; Wang, Hengding1,2; Min, Yanjun1,2; Yuan, Kaijun1; Dai, Dongxu1,3; Wu, Guorong1,3; Yang, Xueming1,3
刊名PHYSICAL CHEMISTRY CHEMICAL PHYSICS
2017-11-21
DOI10.1039/c7cp06292c
19期:43页:29146-29152
收录类别SCI
文章类型Article
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
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.
语种英语
WOS记录号WOS:000414773100014
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/149728
专题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 Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Anhui, Peoples R China
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Yang, Dongyuan,Chen, Zhichao,He, Zhigang,et al. Ultrafast excited-state dynamics of 2,4-dimethylpyrrole[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2017,19(43):29146-29152.
APA Yang, Dongyuan.,Chen, Zhichao.,He, Zhigang.,Wang, Hengding.,Min, Yanjun.,...&Yang, Xueming.(2017).Ultrafast excited-state dynamics of 2,4-dimethylpyrrole.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,19(43),29146-29152.
MLA Yang, Dongyuan,et al."Ultrafast excited-state dynamics of 2,4-dimethylpyrrole".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 19.43(2017):29146-29152.
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