APM OpenIR  > 2011年以前论文发表(包括2011年)
Photodissociation dynamics of bromofluorobenzenes using velocity imaging technique
Tang, Ying3; Lee, Wei-Bin1,2; Zhang, Bing3; Lin, King-Chuen1,2
2008-02-21
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY A
Volume112Issue:7Pages:1421-1429
SubtypeArticle
AbstractVelocity imaging technique combined with (2 + 1) resonance-enhanced multiphoton ionization (REMPI) has been used to detect the Br fragment in photodissociation of o-, m-, and p-bromofluorobenzene at 266 nm. The branching ratio of ground state Br(P-2(3/2)) is found to be larger than 96%. Its translational energy distributions suggest that the Br fragments are generated via two dissociation channels for all the molecules. The fast route, which is missing in p-bromofluorobenzene detected previously by femtosecond laser spectroscopy, giving rise to an anisotropy parameter of 0.50-0.65, is attributed to a direct dissociation from a repulsive triplet T-1 (A '') or T-1 (B-1) state. The slow one with anisotropy parameter close to zero is proposed to stem from excitation of the lowest excited singlet (pi,pi*)state followed by predissociation along a repulsive triplet (pi,sigma*) state localized on the C-Br bond. For the minor product of spin-orbit excited state Br(P-2(1/2)), the dissociating features are similar to those found in Br(P-2(3/2)). Our kinetic and anisotropic features of decomposition obtained in m- and p-bromofluorobenzene are opposed to those by photofragment translational spectroscopy. Discrepancy between different methods is discussed in detail.
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1021/jp710212r
WOS KeywordPUMP-PROBE SPECTROSCOPY ; PHOTOFRAGMENT TRANSLATIONAL SPECTROSCOPY ; 266 NM ; ENERGY REDISTRIBUTION ; ULTRAVIOLET RANGE ; MOLECULAR-BEAMS ; P-BROMOTOLUENE ; ARYL HALIDES ; IODOBENZENE ; DISSOCIATION
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Physics
WOS SubjectChemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS IDWOS:000253222100007
Citation statistics
Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.apm.ac.cn/handle/112942/8083
Collection2011年以前论文发表(包括2011年)
Affiliation1.Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan
2.Acad Sinica, Inst Atom & Mol Sci, Taipei 106, Taiwan
3.Chinese Acad Sci, Wuhan Inst Phys, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China
Recommended Citation
GB/T 7714
Tang, Ying,Lee, Wei-Bin,Zhang, Bing,et al. Photodissociation dynamics of bromofluorobenzenes using velocity imaging technique[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2008,112(7):1421-1429.
APA Tang, Ying,Lee, Wei-Bin,Zhang, Bing,&Lin, King-Chuen.(2008).Photodissociation dynamics of bromofluorobenzenes using velocity imaging technique.JOURNAL OF PHYSICAL CHEMISTRY A,112(7),1421-1429.
MLA Tang, Ying,et al."Photodissociation dynamics of bromofluorobenzenes using velocity imaging technique".JOURNAL OF PHYSICAL CHEMISTRY A 112.7(2008):1421-1429.
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