不同极性溶剂中2-蒽醌磺酸钠三重态特征瞬态吸收谱及动力学研究

Study on the feature transient absorption spectra of triplet state of 9,10-anthraquinone-2-sulfante

利用纳秒级激光光解瞬态吸收光谱装置 - 2 4 8nm(KrF)激光光解研究了水和乙腈溶液中 2 蒽醌磺酸钠激发三重态的瞬态吸收光谱。水溶液中纯净的AQS激发三重态的特征吸收在 5 80nm处 ;确定了AQS激发三重态的特征吸收谱形、范围在水和乙腈溶液中的相似性 ;2 -蒽醌磺酸钠激发三重态的半衰期在乙腈中为 1 0 7μs ,在水中却为为 0 5 μs ;测定了 2 蒽醌磺酸钠激发三重态衰减动力学参数。

Transient absorption spectra of triplet state of 9,10-anthraquninone-2-sulfonate (AQS) in aqueous solution and in actonitrile was studied using nanosecond laser flash photolysis techniques. The characteristic absorption of AQS at 580 nm was reported for the first time. Meanwhile, the spectra of triplet AQS in water and that in CH 3CN was eliminated.