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Wavelength-dependent Photodissociation Dynamics of Benzaldehyde
Liu, Ben-kang1,2; Wang, Bing-xing1,2; Wang, Yan-qiu1; Wang, Li1
关键词Benzaldehyde Ultrafast Process Femtosecond Pump-probe
刊名CHINESE JOURNAL OF CHEMICAL PHYSICS
2009-12-27
DOI10.1088/1674-0068/22/06/587-591
22期:6页:587-591
收录类别SCI
文章类型Article
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]RESOLVED PHOTOELECTRON-SPECTROSCOPY ; AROMATIC CARBONYL-COMPOUNDS ; ABSORPTION CROSS-SECTIONS ; RADIATIONLESS TRANSITIONS ; RELAXATION DYNAMICS ; ULTRAFAST DYNAMICS ; DARK STRUCTURES ; BENZENE DIMER ; CHANNEL 3 ; STATES
英文摘要The ultrafast dynamics of benzaldehyde upon 260., 271; 284, and 287 nm excitations have been studied by femtosecond pump-probe time-of-flight mass spectrometry. A bi-exponential decay component model was applied to fit the transient profiles of benzaldehyde ions and fragment ions. At the S-2 origin, the first decay of the component was attributed to the internal conversion to the high vibrational levels of S-1 state. Lifetimes of the first component decreased with increasing vibrational energy, due to the influence of high density of the vibrational levels. The second decay was assigned to the vibrational relaxation of the S-1 whose lifetime was about 600 fs. Upon 287 ran excitation, the first decay became ultrashort (similar to 56 fs) which was taken for the intersystem cross from S-1 to T-2, while the second decay component was attributed to the vibrational relaxation. The pump-probe transient of fragment was also studied with the different probe intensity at 284 nm pump.
语种英语
WOS记录号WOS:000273466600006
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/141562
专题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, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
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Liu, Ben-kang,Wang, Bing-xing,Wang, Yan-qiu,et al. Wavelength-dependent Photodissociation Dynamics of Benzaldehyde[J]. CHINESE JOURNAL OF CHEMICAL PHYSICS,2009,22(6):587-591.
APA Liu, Ben-kang,Wang, Bing-xing,Wang, Yan-qiu,&Wang, Li.(2009).Wavelength-dependent Photodissociation Dynamics of Benzaldehyde.CHINESE JOURNAL OF CHEMICAL PHYSICS,22(6),587-591.
MLA Liu, Ben-kang,et al."Wavelength-dependent Photodissociation Dynamics of Benzaldehyde".CHINESE JOURNAL OF CHEMICAL PHYSICS 22.6(2009):587-591.
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