Laser flash photolysis study on the quenching reaction of the excited triplet state of acenaphthenequinone by antioxidant vitamin C

被引：0
|
作者：
Weiwei Bian
Fei Zheng
Guanglai Zhu
Xinsheng Xu
机构：
[1] Anhui Normal University,Institute of Atomic and Molecular Physics
来源：
Research on Chemical Intermediates | 2015年 / 41卷
关键词：
Acenaphthenequinone; Vitamin C; Laser flash photolysis; Transient absorption spectroscopy;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The photo-induced reactions of acenaphthenequinone (ACQ) as well as ACQ and vitamin C (VC) in ACN–H2O (v/v, 4:1) mixed solvent have been investigated by means of laser flash photolysis technique. The reaction intermediates have been identified and the reaction mechanism has been analyzed. The self-quenching rate constant of 3ACQ* by ground state ACQ and the quenching rate constant of 3ACQ* by biological antioxidant VC have also been measured. The results indicate that there is a hydrogen transfer from VC to 3ACQ* during the laser photolysis. VC is an effective quencher to 3ACQ* and the quenching rate constant is 4.0 × 108 L mol−1 s−1.
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页码：3409 / 3417
页数：8
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