论文部分内容阅读
Pignataro等在硝基苯胺化合物的X射线光电子能谱(XPS)上,观察到硝基的Nls光电子谱有明显分裂,并认为是硝基N ls振起(shake up)伴峰的表征。我们在一组邻硝基乙酰苯胺衍生物的XPS谱上,同样观察到硝基的Nls光电子谱有明显分裂,可认为是Nls振起伴峰的反映,而且苯环上的取代基对该振起伴峰强度有影响。按照Pignataro等关于振起伴峰与主峰的能量分离以及分子内电荷转移有关的观点,计算了振起伴峰与主峰的面积比。结果表明,峰间距与面积比的趋势一致。因此两者都可作为分子内电荷转移的粗略估计。
Pignataro et al. On the X-ray photoelectron spectroscopy (XPS) of the nitroaniline compound, the Nls photoelectron spectrum of the nitro group was observed to be clearly split and was characterized as a character of the peak of the shake-up of the nitro-Nls. We in a group of o-nitroanilide derivatives of XPS spectrum, the same observed nitryl Nls photoelectron spectroscopy obvious split, can be considered as a reflection of Nls vibration with the peak, and the benzene ring substituents on the vibration Rise with peak intensity impact. According to Pignataro et al., Regarding the energy separation of the main peak from the main peak and the intramolecular charge transfer, the area ratio of the main peak to the main peak was calculated. The results show that the peak spacing and the area ratio of the same trend. So both can be used as rough estimates of intramolecular charge transfer.