| 没食子酸的激光光解研究 |
| |
| 引用本文： | 朱红平,赵红卫,张兆霞,王文锋,姚思德.没食子酸的激光光解研究[J].中国化学,2006,24(10):1332-1335. |
| |
| 作者姓名： | 朱红平 赵红卫 张兆霞 王文锋 姚思德 |
| |
| 作者单位： | Shanghai Institute of Applied Physics Chinese Academy of Sciences，Shanghai 201800，China Graduate University of Chinese Academy of Sciences，Beijing 100049，China，Shanghai Institute of Applied Physics，Chinese Academy of Sciences，Shanghai 201800，China，Shanghai Institute of Applied Physics，Chinese Academy of Sciences，Shanghai 201800，China Graduate University of Chinese Academy of Sciences，Beijing 100049，China，Shanghai Institute of Applied Physics，Chinese Academy of Sciences，Shanghai 201800，China，Shanghai Institute of Applied Physics，Chinese Academy of Sciences，Shanghai 201800，China |
| |
| 基金项目： | Project supported by the National Natural Science Foundation of China(No.20373086). |
| |
| 摘 要： | The transient species of gallic acid(GA)have been studied by 266 nm nanosecond laser flash photolysis inaqueous solution and acetonitrile.The intermediate with absorption at 320 nm was identified as excited triplet state(~3GA~*),the decay rates of which were obtained in aqueous solution and acetonitrile respectively.Energy transferfrom ~3GA~* to β-carotene was observed and the energy transfer rate constant k_(ent)was determined to be 2.2×10~9mol~(-1)·L·s~(-1).GA underwent photoionization during photolysis and the quantum yield of photoionization was de-termined to be 0.12 at room temperature with KI as a reference.
|
| 关 键 词： | 没食子酸 光分解 三重态 光致电离 |
| 收稿时间： | 2005-12-01 |
| 修稿时间： | 2005-12-012006-06-21 |
Laser Flash Photolysis Studies on Gallic Acid |
| |
| ZHU Hong-Ping, ZHAO Hong-Wei, ZHANG Zhao-Xia, WANG Wen-Feng, YAO Si-Dea.Laser Flash Photolysis Studies on Gallic Acid[J].Chinese Journal of Chemistry,2006,24(10):1332-1335. |
| |
| Authors: | ZHU Hong-Ping ZHAO Hong-Wei ZHANG Zhao-Xia WANG Wen-Feng YAO Si-Dea |
| |
| Abstract: | The transient species of gallic acid (GA) have been studied by 266 nm nanosecond laser flash photolysis in aqueous solution and acetonitrile. The intermediate with absorption at 320 nm was identified as excited triplet state (3GA*), the decay rates of which were obtained in aqueous solution and acetonitrile respectively. Energy transfer from 3GA* to β‐carotene was observed and the energy transfer rate constant kent was determined to be 2.2×109mol?1·L·s?1. GA underwent photoionization during photolysis and the quantum yield of photoionization was determined to be 0.12 at room temperature with KI as a reference. |
| |
| Keywords: | gallic acid photolysis triplet state photoionization |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《中国化学》浏览原始摘要信息 |
| 点击此处可从《中国化学》下载免费的PDF全文 |
