中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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
DOI10.1021/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。