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Dynamics of OH Formation in the Photodissociation of o-Nitrobenzoic Acid at 295 and 355 nm
Zhou, Can-Hua; Cheng, Shi-Bo; Sun, Ju-Long; Yin, Hong-Ming; Han, Ke-Li; He, Guo-Zhong; Yin HM(尹鸿鸣)
刊名JOURNAL OF PHYSICAL CHEMISTRY A
2009-04-30
DOI10.1021/jp900567u
113期:17页:4923-4929
收录类别SCI
文章类型Article
部门归属11
项目归属1101
产权排名1;1
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical ; Physics, Atomic, Molecular & Chemical
研究领域[WOS]Chemistry ; Physics
关键词[WOS]LASER-INDUCED FLUORESCENCE ; BENZOIC-ACID ; STATE DISTRIBUTION ; MONOMER ; PRODUCT ; DISSOCIATION ; NITROTOLUENE ; COMPLEXES ; MECHANISM ; FRAGMENT
英文摘要Photodissociation dynamics of o-nitrobenzoic acid at 295 and 355 nm is studied by probing the nascent OH photoproduct employing the single-photon laser-induced fluorescence technique. At both of the photolysis wavelengths, the OH fragments are found to be vibrationally cold but have different rotational state distributions. Upon photolysis at 295 nm, the relative population of OH in different rotational states does not follow the Boltzmann equilibrium distribution, whereas upon photolysis at 355 rim, a Boltzmann distribution is observed with a rotational temperature of 1010 +/- 100 K. Between the two spin-orbit states, (2)Pi(3/2) and (2)Pi(1/2) the former is found to be preferentially populated, and the distribution of the Pi(A') state for the Lambda-doublet is dominant at both of the wavelengths studied. Several possible dissociation pathways of o-nitrobenzoic acid leading to formation of the OH fragment are investigated computationally. Oil the basis of the theoretical and experimental studies, a possible mechanism of OH formation from the photodissociation of o-nitrobenzoic acid at 295 and 355 nm is proposed.
语种英语
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WOS记录号WOS:000265529800015
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被引频次:10[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/321008/102015
专题中国科学院大连化学物理研究所
通讯作者Yin HM(尹鸿鸣)
作者单位Chinese Acad Sci, State Key Lab Mol React Dynam, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
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Zhou, Can-Hua,Cheng, Shi-Bo,Sun, Ju-Long,et al. Dynamics of OH Formation in the Photodissociation of o-Nitrobenzoic Acid at 295 and 355 nm[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2009,113(17):4923-4929.
APA Zhou, Can-Hua.,Cheng, Shi-Bo.,Sun, Ju-Long.,Yin, Hong-Ming.,Han, Ke-Li.,...&尹鸿鸣.(2009).Dynamics of OH Formation in the Photodissociation of o-Nitrobenzoic Acid at 295 and 355 nm.JOURNAL OF PHYSICAL CHEMISTRY A,113(17),4923-4929.
MLA Zhou, Can-Hua,et al."Dynamics of OH Formation in the Photodissociation of o-Nitrobenzoic Acid at 295 and 355 nm".JOURNAL OF PHYSICAL CHEMISTRY A 113.17(2009):4923-4929.
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