采用纳秒级脉冲辐解技术研究了吩噻嗪与CC13OO·、·OH的反应,提出了相应的反应机理,得到了相关的反应速率常数.研究结果表明:吩噻嗪与CCl3OO·、·OH反应得到的瞬态产物的最大吸收峰都位于380nm左右,该吸收峰归属于CCl3OO·、·OH夺取吩噻嗪氮原子上的氢而产生的吩噻嗪氮自由基.吩噻嗪与CCl3OO·、·OH反应的速率常数分别为1.1×109和4.0× 109 L·mol-1·s-1.这些结果将为进一步研究吩噻嗪的抗氧化活性提供理论基础.%The kinetics and mechanisms of the reactions between phenothiazine and CCI3OO*, *OH were evaluated and the related rate constants were determined using nanosecond pulse radiolysis technique. The experimental results indicate that the maximum absorption of the transient product from the reaction between phenothiazine and CCl3OO*,*OH was located at 380 nm, which is attributed to CClOO* and *OH abstracting hydrogen from phenothiazine to generate a phenothiazine radical. The rate constants of the reactions between phenothiazine and CCl3OO*, *OH were determined to be 1.1 ×109, 4.0×109 L · mol-1 · s-1, respectively. These results provide a theoretical foundation for the further study of the antioxidant activity of phenothiazine.
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