Tracking Ultrafast Bond Dissociation Dynamics at 0.1 angstrom Resolution by Femtosecond Extreme Ultraviolet Absorption Spectroscopy
文献类型：期刊论文
| 作者 | Tian, Li2; Loh, Zhi-Heng1,3,4; Yang, Minghui2; Lu, Yunpeng4; Li, Jialin3,4; Wei, Zhengrong3,4 |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY LETTERS
 |
| 出版日期 | 2018-10-04 |
| 卷号 | 9期号:19页码:5742-5747 |
| ISSN号 | 1948-7185 |
| DOI | 10.1021/acs.jpclett.8b02547 |
| 英文摘要 | Visualizing the real-time dissociation of chemical bonds represents a challenge in the study of ultrafast molecular dynamics due to the simultaneous need for sub-angstrom spatial and femtosecond temporal resolution. Here, we follow the C-I dissociation dynamics of strong-field-ionized 2-iodopropane (2-C3H7I) with femtosecond extreme ultraviolet (XUV) absorption spectroscopy. By probing the iodine 4d core-level absorption, we resolve a continuous XUV spectral shift on the sub-100 fs time scale that accompanies the dissociation of the 2-C3H7I+ spin-orbit-excited( 2)E(1/2) state to yield atomic I in the( 2)P(3/2) state. In combination with ab initio calculations of the C-I distance-dependent XUV transition energy, we reconstruct the temporal evolution of the C-I distance from the Franck-Condon region to the asymptotic region with 10 fs and 0.1 angstrom resolution. The C-I bond elongation appears to couple to coherent vibrational motion along the HC(CH3)(2) umbrella mode of the 2-C3H7+ fragment, whose effect on the I 4d XUV transition even at C-I distances of 3.5 angstrom points to the long-range nature of XUV absorption probing. Our results suggest that femtosecond XUV absorption spectroscopy, in combination with ab initio simulations of XUV transition energies, can be used to resolve the ultrafast structural dynamics of large polyatomic molecules. |
| WOS关键词 | PHOTODISSOCIATION DYNAMICS ; ULTRABRIGHT ELECTRONS ; TRANSIENT ABSORPTION ; METHYL-IODIDE ; CHEMICAL-BOND ; DIFFRACTION ; SPECTRA ; BAND ; PHOTOELECTRON ; EXCITATION |
| 资助项目 | NTU ; Ministry of Education Academic Research Fund[RG105/17] ; Nanyang Assistant Professorship ; National Natural Science Foundation of China[21373266] |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000446932500014 |
| 出版者 | AMER CHEMICAL SOC |
| 资助机构 | NTU ; NTU ; Ministry of Education Academic Research Fund ; Ministry of Education Academic Research Fund ; Nanyang Assistant Professorship ; Nanyang Assistant Professorship ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; NTU ; NTU ; Ministry of Education Academic Research Fund ; Ministry of Education Academic Research Fund ; Nanyang Assistant Professorship ; Nanyang Assistant Professorship ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; NTU ; NTU ; Ministry of Education Academic Research Fund ; Ministry of Education Academic Research Fund ; Nanyang Assistant Professorship ; Nanyang Assistant Professorship ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; NTU ; NTU ; Ministry of Education Academic Research Fund ; Ministry of Education Academic Research Fund ; Nanyang Assistant Professorship ; Nanyang Assistant Professorship ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/13249]  |
| 专题 | 中国科学院武汉物理与数学研究所 |
| 通讯作者 | Loh, Zhi-Heng |
| 作者单位 | 1.Nanyang Technol Univ, Ctr Opt Fibre Technol, Photon Inst, Singapore 639798, Singapore 2.Chinese Acad Sci, Key Lab Magnet Resonance Biol Syst, State Key Lab Magnet Resonance & Atom & Mol Phys, Natl Ctr Magnet Resonance Wuhan,Wuhan Inst Phys &, Wuhan 430071, Hubei, Peoples R China 3.Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, Singapore 637371, Singapore 4.Nanyang Technol Univ, Sch Phys & Math Sci, Div Chem & Biol Chem, Singapore 637371, Singapore |
| 推荐引用方式 GB/T 7714 | Tian, Li,Loh, Zhi-Heng,Yang, Minghui,et al. Tracking Ultrafast Bond Dissociation Dynamics at 0.1 angstrom Resolution by Femtosecond Extreme Ultraviolet Absorption Spectroscopy[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2018,9(19):5742-5747. |
| APA | Tian, Li,Loh, Zhi-Heng,Yang, Minghui,Lu, Yunpeng,Li, Jialin,&Wei, Zhengrong.(2018).Tracking Ultrafast Bond Dissociation Dynamics at 0.1 angstrom Resolution by Femtosecond Extreme Ultraviolet Absorption Spectroscopy.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,9(19),5742-5747. |
| MLA | Tian, Li,et al."Tracking Ultrafast Bond Dissociation Dynamics at 0.1 angstrom Resolution by Femtosecond Extreme Ultraviolet Absorption Spectroscopy".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 9.19(2018):5742-5747. |
入库方式： OAI收割
来源：武汉物理与数学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。