Photogenerated aryl mesylate and aryl diethyl phosphate radical cations: a time-resolved spectroscopy investigation
作者:Sergio M. Bonesi、Stefano Protti、Andrea Capucciati、Maurizio Fagnoni
DOI:10.1039/d2nj01755e
日期:——
persulfate was investigated by means of time-resolved spectroscopy. The photoinduced electron transfer (ET) between the photogenerated SO4˙− radical anion and the examined substrates showed rate constants (kET) in the order of 109–1010 M−1 s−1 and the generated radical cations exhibit a broad absorption band (350–550 nm) with lifetime values in the 7–62 μs range, depending on the nature of the aromatic substituents
通过时间分辨光谱研究了在过硫酸铵存在下有机/水混合物中的芳基甲磺酸酯和芳基二乙基磷酸酯的单电子氧化。光生 SO 4 ˙ -自由基阴离子和被检测底物之间的光致电子转移 (ET)显示速率常数 ( k ET ) 约为 10 9 –10 10 M -1 s -1并且生成的自由基阳离子表现出宽吸收带(350-550 nm),寿命值在 7-62 μs 范围内,具体取决于芳族取代基的性质。log ( k ET ) 和 Δ之间的相关性令人满意G 0 ET证明了 ET 过程遵循 Marcus 模型。