物理化学学报 >> 2000, Vol. 16 >> Issue (10): 948-951.doi: 10.3866/PKU.WHXB20001015

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氧化偶氮苯的真空紫外光电离与光离解

武国华, 盛六四, 张允武, 高辉, 陈祖耀   

  1. 中国科学技术大学国家同步辐射实验室，中国科学技术大学化学系 ，合肥 230026
  • 收稿日期:1999-12-07 修回日期:2000-04-24 发布日期:2000-10-15
  • 通讯作者: 盛六四

Photoionization and Photodissociative lonization of Azoxybenzene(C12H10N2O) by Vacuum Ultraviolet Synchrotron Radiation (SR)

Wu Guo-Hua, Sheng Liu-Si, Zhang Yun-Wu, Gao Hui, Chen Zu-Yao   

  1. National Synchrotron Radiation Laboratory,University of Science Technology of China,Hefei 230026|Department of Chemistry,University of Science Technology of China,Hefei 230026
  • Received:1999-12-07 Revised:2000-04-24 Published:2000-10-15
  • Contact: Sheng Liu-Si

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关键词: 同步辐射, 光电离, 质谱, 电离势, 氧化偶氮苯

Abstract:

The photoionization and photodissociative ionization processes of azoxybenzene (C12H10N2O,AOB) have been studied using the photoionization mass spectrometry with vacuum ultraviolet synchrotron radiation (SR) as the light source. The ionization potential (IP) of this molecule and four appearance potentials (AP) of the important ionic fragments from the SR photodissociative ionization of AOB have been measured. On the basis of the IP(C12H10N2O) and AP() measured in this experiment, the dissociative energy D0(-N2OC6H5) has been evaluated. Based on the results of the mass spectroscopy of AOB, the possible channels of photodissociative ionization of AOB have been analyzed.

Key words: Synchrotron radiation, Photoionization, Mass spectrum, Ionization potential, Azoxybenzene