Ultrafast excited-state dynamics in a prototype of the peptide bond: Internal conversion of the isolated N,N-dimethylformamide
文献类型：期刊论文
| 作者 | Qiu, Xuejun; Ding, Zhonghua; Xu, Yanqi; Wang, Yanmei; Zhang, Bing1 |
| 刊名 | PHYSICAL REVIEW A
 |
| 出版日期 | 2014-03-06 |
| 卷号 | 89期号:3 |
| 英文摘要 | A combination of femtosecond time-resolved photoelectron imaging technique and time-resolved mass spectroscopy technique are implemented to investigate the electronic excited-state dynamics in N,N-dimethylformamide (NNDMF). The ultrafast internal conversion (IC) of S-1 (n pi*) and S-2 (pi pi*) excited states of NNDMF are observed in this experiment. The molecule is excited to the lowest-lying (1)pi pi* state (S-2 state) following absorption of two 400-nm photons. It is found that the population of the S-2 (pi pi*) state undergoes ultrafast IC to the highly vibrationally excited S-1 (n pi*) state within 99 fs by very fast C-N stretching, while the nonradiative deactivation of the S-1 (n pi*) state occurs in 2.4 ps, and it is to a large extent due to the C-N bond cleavage from the S-1 potential energy surface, which would be able to efficiently compete with the IC of S-1 -> S-0 through S-1/S-0 conical intersections. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Optics ; Physics, Atomic, Molecular & Chemical |
| 研究领域[WOS] | Optics ; Physics |
| 关键词[WOS] | PHOTOELECTRON-SPECTROSCOPY ; SIMPLE AMIDES ; PHOTODISSOCIATION ; ANILINE ; SPECTRA |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000332340800006 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/1442]  |
| 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, Hubei, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qiu, Xuejun,Ding, Zhonghua,Xu, Yanqi,et al. Ultrafast excited-state dynamics in a prototype of the peptide bond: Internal conversion of the isolated N,N-dimethylformamide[J]. PHYSICAL REVIEW A,2014,89(3). |
| APA | Qiu, Xuejun,Ding, Zhonghua,Xu, Yanqi,Wang, Yanmei,&Zhang, Bing.(2014).Ultrafast excited-state dynamics in a prototype of the peptide bond: Internal conversion of the isolated N,N-dimethylformamide.PHYSICAL REVIEW A,89(3). |
| MLA | Qiu, Xuejun,et al."Ultrafast excited-state dynamics in a prototype of the peptide bond: Internal conversion of the isolated N,N-dimethylformamide".PHYSICAL REVIEW A 89.3(2014). |
入库方式： OAI收割
来源：武汉物理与数学研究所
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