Pulse radiolysis and laser flash photolysis of isoquinoline

ZHU Dazhang; WANG Shilong; SUN Xiaoyu; YAN Qianqian; NI Yaming; YAO Side; WANG Wenfeng

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Pulse radiolysis and laser flash photolysis of isoquinoline

更新时间：2023-03-30

- Pulse radiolysis and laser flash photolysis of isoquinoline
- Journal of Radiation Research and Radiation Processing Vol. 25, Issue 2, Pages: 102-106(2007)
- 作者机构：
  
  1.同济大学化学系　上海　200092
  2.同济大学生命科学与技术学院　上海　200092
  3.中国科学院上海应用物理研究所　上海　201800
- 作者简介：
- 基金信息：
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ZHU Dazhang, WANG Shilong, SUN Xiaoyu, et al. Pulse radiolysis and laser flash photolysis of isoquinoline. [J]. Journal of Radiation Research and Radiation Processing 25(2):102-106(2007)
DOI：

ZHU Dazhang, WANG Shilong, SUN Xiaoyu, et al. Pulse radiolysis and laser flash photolysis of isoquinoline. [J]. Journal of Radiation Research and Radiation Processing 25(2):102-106(2007) DOI：

摘要

用脉冲辐解和激光光解相结合，研究了异喹啉这种难降解杂环化合物在紫外光作用下的变化和与HO•的反应。结果表明，在波长为266nm的激光作用下，异喹啉不仅发生光激发，而且发生单光子电离，其量子产额为1.58×10,－4,。异喹啉光电离产生的阳离子自由基可以脱去质子，其pKa为5.50。异喹啉可以与HO•发生反应，其反应速率常数为3.4×10,9, mol,－1,•dm,3,•s,－1,。本工作的研究将为photo-Fenton法降解异喹啉提供理论上的依据。

Abstract

The performance of isoquinoline, a kind of nondegradable ,N,-heterocyclic compound, under the irradiation of UV light and its reaction with HO∙ were investigated by pulse radiolysis and laser flash photolysis. It was shown that both photo-excitation and monophoto-ionization with the quantum yield of 1.58×10,-4, happened in isoquinoline under the irradiation of the laser pulse of 266nm. The cation radical of isoquinoline produced by photo-ionization could deprotonate to form its conjugate base mediate radical with the pKa of 5.50. Pulse radiolysis showed that isoquinoline could react with HO∙ very rapidly with the rate constant of 3.4×10,9, mol,-1,•dm,3,•s,-1,. With a better understanding on pulse radiolysis and laser flash photolysis of isoquinoline, this study is helpful for its degradation and for environment protection.

关键词

异喹啉激光光解脉冲辐解羟基自由基光电离

Keywords

IsoquinolineLaser flash photolysisPulse radiolysisHydroxyl radicalPhoto-ionization

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