Ultrafast excited-state dynamics of 2,4-dimethylpyrrole
文献类型：期刊论文
| 作者 | Dai, Dongxu1,2; Yang, Xueming1,2; Wu, Guorong1,2; Yuan, Kaijun1; Min, Yanjun1,3; Wang, Hengding1,3; He, Zhigang1; Chen, Zhichao1; Yang, Dongyuan1,3 |
| 刊名 | PHYSICAL CHEMISTRY CHEMICAL PHYSICS
 |
| 出版日期 | 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 |
| 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. |
入库方式： OAI收割
来源：大连化学物理研究所
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