Reactions of Singlet Oxygen with Olefins and Sterically Hindered Amine in Mixed Surfactant Vesicles
作者:Hong-Ru Li、Li-Zhu Wu、Chen-Ho Tung
DOI:10.1021/ja9917161
日期:2000.3.1
The photosensitized oxidations of the olefins, trans-1,2-dimethoxystilbene (DMOS), trans-stilbene (TS), and trans,trans-1,4-diphenyl-1,3-butadiene (DPB) as well as the amine 2,2,6,6-tetramethylpiperidine (TMP) in mixed surfactant vesicles were investigated. The sensitizer was either a hydrophobic dye, tetraphenylporphyrin (TPP), or a cationic dye, methylene blue (MB). The substrate molecules were solubilized
烯烃、反式-1,2-二甲氧基芪 (DMOS)、反式-芪 (TS) 和反式,反式-1,4-二苯基-1,3-丁二烯 (DPB) 以及胺 2 的光敏氧化研究了混合表面活性剂囊泡中的 ,2,6,6-四甲基哌啶 (TMP)。敏化剂是疏水染料四苯基卟啉 (TPP) 或阳离子染料亚甲蓝 (MB)。底物分子溶解在一组囊泡的双层膜中,而敏化剂被掺入双层或另一组囊泡的水性内部隔室中。通过混合上述两组囊泡分散体制备辐照样品。氧饱和样品的光照射导致基材氧化,烯烃氧化中最终产物的分离和胺氧化中硝基氧自由基的 ESR 谱的检测证明了这一点。在 D2O 分散体中,产物形成的量子产率显着提高。