作者:Jean-Louis Clément、Jean-Pierre Finet、Claudine Fréjaville、Paul Tordo
DOI:10.1039/b300870c
日期:2003.4.23
Three analogues of 5-diethoxyphosphoryl-5-methyl-1-pyrroline N-oxide (DEPMPO, 1) labelled with two (1-d2), five (1-d5) or seven (1-d7)
2H were synthesized and used to trap the tert-butylperoxyl radical. The EPR spectra of 1-d2-OOBut and 1-d7-OOBut spin adducts exhibited more straightforward patterns and better signal to noise ratio than those obtained with 1 or 1-d5. The use of the easily available 1-d2 as spin trap could help significantly the analysis of the EPR signals when the signal of either superoxide or alkylperoxyl spin adduct is superimposed with the signals of other spin adducts.
我们合成了用 2 个(1-d2)、5 个(1-d5)或 7 个(1-d7)2H 标记的 5-二乙氧基磷酰-5-甲基-1-吡咯啉 N-氧化物(DEPMPO,1)的三种类似物,并将其用于捕获叔丁基过氧自由基。与 1-d2 或 1-d5 相比,1-d2-OOBut 和 1-d7-OOBut 自旋加合物的 EPR 光谱显示出更直接的模式和更好的信噪比。当超氧化物或烷基过氧自由基自旋加合物的信号与其他自旋加合物的信号叠加时,使用易于获得的 1-d2 作为自旋阱可大大有助于分析 EPR 信号。