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Detection of OH Radical in the Photodissociation of p-Aminobenzoic Acid at 266 nm
  • 期刊名称：Chin. J. Chem. Phys.
  • 时间：0
  • 页码：143-150
  • 语言：中文
  • 分类：X13[环境科学与工程—环境科学] TQ246.37[化学工程—有机化工]
  • 作者机构：[1]State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, ChineseAcademy of Sciences, Dalian 116023, China
  • 相关基金：V. ACKNOWLEDGMENTS This work was supported by tile National Natural Science Foundation of China （No.20721004 and No.20833008）. Can-hua Zhou sincerely wishes to express thanks to Dr. Ju-long Sun for assistance in the experiments.
  • 相关项目：分子反应动力学的实验与理论研究
作者： Hong-ming Yin|Can-hua Zhou|Guo-zhong He|Shi-bo Cheng|
关键词： 对氨基苯甲酸, 氢氧自由基, 光解离, 检测, 荧光技术, 激光诱导, 形成机理, 态分布, Photodissociation, OH radical, p-aminobenzoic acid, Laser-induced fluorescence technique
中文摘要：

在 266 nm 的 p-aminobenzoic 酸的光致离解被探查调查初生哦采用导致激光的荧光技术的 photoproduct。这被发现初生哦基是震动地冷的，它的旋转州的分发遵循了 Boltzmann 行为是，由 1040 的旋转温度描绘了吗？？

英文摘要：

Photodissociation of p-aminobenzoic acid at 266 nm was investigated by probing the nascent OH photoproduct employing the laser-induced fluorescence technique. It was found that the nascent OH radical was vibrationally cold and its rotational state distribution conformed to be a Boltzmann behavior, characterized by a rotational temperature of 1040±110 K. The rotational energy of OH was determined to be 8.78±0.84 kJ/mol. Between the two spinorbit states of OH, ^2Ⅱ3/2 and ^2Ⅱ1/2, the former was found to be preferentially populated. The distribution of the II（A＇） state for the A-doublet was dominant. Finally, a probable mechanism for the formation of OH produced from the photodissociation of p-aminobenzoic acid is discussed.

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