DICP OpenIR
Dynamics of Highly Excited Nitroaromatics
Wang, Bingxing1,2; Liu, Benkang1,2; Wang, Yanqiu1; Wang, Li1
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY A
2010-12-23
DOI10.1021/jp104727p
Volume114Issue:50Pages:12972-12978
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS Research AreaChemistry ; Physics
WOS KeywordRESOLVED PHOTOELECTRON-SPECTROSCOPY ; ENERGY-LOSS SPECTROSCOPY ; MULTIPHOTON IONIZATION ; MASS-SPECTROMETRY ; PHOTODISSOCIATION DYNAMICS ; RELAXATION DYNAMICS ; QUANTUM CONTROL ; RYDBERG STATES ; O-NITROTOLUENE ; NITROBENZENE
AbstractAlthough the photodissociation of nitroaromatics in low excitation electronic states has been extensively studied in recent decades, little is known about the highly excited electronic states. The fragmentation dynamics of three nitroaromatics, nitrobenzene, o-nitrotoluene, and m-nitrotoluene, in highly excited states, populated by the absorption of two photons at 271 nm, are studied with time-of-flight mass spectrometry. The temporal evolutions of the highly excited states are monitored by one-photon ionization at 408 nm. The transients of parent and fragment ions exhibit two ultrafast deactivation processes. The first process is ultrafast internal conversion from the initial excitation to Rydberg states in tens of femtoseconds. The second one is conversion from the Rydberg states to the vibrational manifold in the ground electronic states within hundreds of femtoseconds. The internal conversion process is accelerated by methyl substitution. In o-nitrotoluene, the two processes become much faster due to the hydrogen transfer from the CH(3) to the NO(2) group (ortho effect).
Language英语
WOS IDWOS:000285236500002
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/142170
Collection中国科学院大连化学物理研究所
Affiliation1.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
Recommended Citation
GB/T 7714
Wang, Bingxing,Liu, Benkang,Wang, Yanqiu,et al. Dynamics of Highly Excited Nitroaromatics[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2010,114(50):12972-12978.
APA Wang, Bingxing,Liu, Benkang,Wang, Yanqiu,&Wang, Li.(2010).Dynamics of Highly Excited Nitroaromatics.JOURNAL OF PHYSICAL CHEMISTRY A,114(50),12972-12978.
MLA Wang, Bingxing,et al."Dynamics of Highly Excited Nitroaromatics".JOURNAL OF PHYSICAL CHEMISTRY A 114.50(2010):12972-12978.
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