Photodissociation Dynamics of 2-lodotoluene Investigated by Femtosecond Time-Resolved Mass Spectrometry
文献类型：期刊论文
| 作者 | Liu, Zhi-ming; Wang, Yan-mei; Hu, Chun-long; Long, Jin-you; Zhang, Bing |
| 刊名 | CHINESE JOURNAL OF CHEMICAL PHYSICS
 |
| 出版日期 | 2016-02-01 |
| 卷号 | 29期号:1页码:53-58 |
| 关键词 | 2-Iodotoluene Photodissociation Dissociation time Femtosecond time resolved mass spectrometry |
| 英文摘要 | The photodissociation dynamics of 2-iodotoluene following excitation at 266 nm have been investigated employing femtosecond time-resolved mass spectrometry. The photofragments are detected by multiphoton ionization using an intense laser field centered at 800 nm. A dissociation time of 380 +/- 50 fs was measured from the rising time of the co-fragments of toluene radical (C7H7) and iodine atom (I), which is attributed to the averaged time needed for the C-I bond breaking for the simultaneously excited n sigma* and pi* states by 266 nm pump light. In addition, a probe light centered at 298.23 nm corresponding to resonance wavelength of ground-state iodine atom is used to selectively ionize ground-state iodine atoms generated from the dissociation of initially populated n sigma* and pi pi* states. And a rise time of 400 50 fs is extracted from the fitting of time-dependent I+ transient, which is in agreement with the dissociation time obtained by multiphoton ionization with 800 nm, suggesting that the main dissociative products are ground-state iodine atoms. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Physics, Atomic, Molecular & Chemical |
| 研究领域[WOS] | Physics |
| 关键词[WOS] | PUMP-PROBE SPECTROSCOPY ; KINETIC-ENERGY ; PHOTOELECTRON ; BROMOBENZENE ; IONIZATION ; PHOTOFRAGMENTATION ; DISSOCIATION ; IODOBENZENE ; IONS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000373211400007 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/9313]  |
| 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 | Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Zhi-ming,Wang, Yan-mei,Hu, Chun-long,et al. Photodissociation Dynamics of 2-lodotoluene Investigated by Femtosecond Time-Resolved Mass Spectrometry[J]. CHINESE JOURNAL OF CHEMICAL PHYSICS,2016,29(1):53-58. |
| APA | Liu, Zhi-ming,Wang, Yan-mei,Hu, Chun-long,Long, Jin-you,&Zhang, Bing.(2016).Photodissociation Dynamics of 2-lodotoluene Investigated by Femtosecond Time-Resolved Mass Spectrometry.CHINESE JOURNAL OF CHEMICAL PHYSICS,29(1),53-58. |
| MLA | Liu, Zhi-ming,et al."Photodissociation Dynamics of 2-lodotoluene Investigated by Femtosecond Time-Resolved Mass Spectrometry".CHINESE JOURNAL OF CHEMICAL PHYSICS 29.1(2016):53-58. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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