Laser-flash photolysis studies of 2’-acetonaphthone in acetonitrile solution

WANG Wenfeng YAO Side

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Laser-flash photolysis studies of 2’-acetonaphthone in acetonitrile solution

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- Laser-flash photolysis studies of 2’-acetonaphthone in acetonitrile solution
- NUCLEAR TECHNIQUES Issue 7, (2001)
- 作者机构：
  
  1. 中国科学院上海原子核研究所辐射化学实验室,上海,201800
  2. The North-East Wales Institute
  3. Plas Coch
  4. Wrexham !.K,U,LL11 2AW
- 作者简介：
- 基金信息：
  
  上海市自然科学基金（98ZB14044）;中英文化交流项目
- DOI：
  CLC： O644
- Published：01 July 2001
- 稿件说明：
移动端阅览
[1]王文锋,姚思德,Suppiah Navaratnam.乙腈体系中2’-萘乙酮激发三重态性质的激光光解研究[J].核技术,2001(07):605-609.

WANG Wenfeng YAO Side. Laser-flash photolysis studies of 2’-acetonaphthone in acetonitrile solution[J]. Nuclear techniques, 2001, (7): 605-609.
[1]王文锋,姚思德,Suppiah Navaratnam.乙腈体系中2’-萘乙酮激发三重态性质的激光光解研究[J].核技术,2001(07):605-609. DOI：

WANG Wenfeng YAO Side. Laser-flash photolysis studies of 2’-acetonaphthone in acetonitrile solution[J]. Nuclear techniques, 2001, (7): 605-609. DOI：

摘要

利用纳秒级激光光解瞬态光谱装置，以３５５ｎｍ激光为激发光源，二苯甲酮、周萘酮为光敏化剂和参比物，研究了２’－萘乙酮激发三重态在乙腈体系下激发三重态的量子产额、单线态氧量子产额、激发态衰变反应动力学参数、氧淬灭反应速率常数、三重态摩尔消光系数及二苯甲酮激发三重态与２’－萘乙酮之间的能量转移反应速率常数，并得到了２’－萘乙酮在乙腈体系中激发三重态的瞬态吸收光谱。

Abstract

The photochemistry of 2’- acetonaphthone in acetonitril. has been investigated using laser flash photolysis. The triplet - triplet absorption spectrum of 2’- acetonaphthone studied show absorption maximum at 420nm with extinction coefficient of 9500dm3mol-1 cm-1. The triplet half - life times is 11. 0μs in 3 ×10 -3mol·dm -3 2’- acetonaphthone solution. The triplet quantum yield and the singlet oxygen quantum yield of 1. 0 and 0. 71 were obtained respectively. A rate constant for triplet energy transfer between benzophenone triplet and 2 ’- acetonaphthone is 1. 0 ×1010 dm3 mol -1·s -1.

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