摘要
用脉冲辐解技术研究了水溶液中的9，10－菲醌（PhQ）单电子还原性质，给出了PhQ半醌阴离子和中性自由基的吸收光谱，中性自由基的酸解离常数，以及PhQ的单电子还原电位。还研究了PhQ半醌自由基的生成动力学，获得了水化电子和异丙醇自由基与PhQ反的二级速率常数。同时还获得了PhQ半醌自由基的衰变速率常数。
One-electron reductions of 9, 10-phenanthrenequinone (PhQ) in aqueous solution have been studied using pulse radiolysis. In this paper, we present the absorption spectra of PhQ semiquinone anionic and neutral forms. pK. of the semiquinone neutral form and one-electron reduction potentials of PhQ at neutral pH. We have also studied the formation and kinetics of the semiquinone. The bimolecular rate constants of eaq- and (CH3)2 COH with PhQ and the decay rate constants of PhQ semiquinones are obtained.
出处
《辐射研究与辐射工艺学报》
EI
CAS
CSCD
北大核心
1997年第1期10-14,共5页
Journal of Radiation Research and Radiation Processing
关键词
脉冲辐解
9.10-菲醌
单电子还原
Pulse radiolysis, 9,10-Phenanthrenequinone, One-electron reduction
