苯甲酸酯类液晶的CI、EI质谱研究及比较

Comparation of the Chemical Ionization and Electroionization Mass Spectra for Liquid Crystal of Phenyl Benzoate

通过对苯甲酸酯类液晶的化学电离 ( CI)、热电离 ( EI)质谱研究及其比较可以发现 ,苯甲酸酯类液晶的EI质谱无分子离子峰 ,碎片离子明显 ,而 CI质谱分子离子峰几乎均为基峰且有苯甲酸类、醇类的互补离子峰。

Liquid crystal is one of important materials. It has been widely used in physics, chemistry, electronics and so on. Because of its particular characteristics, more and more chemists have been attracted to it. Surprisingly, there are only a few papers on electroionization mass spectra of liquid crystals. In this paper, the chemical ionization, electroionization mass spectra of liquid crystal of phenyl benzoates are presented. The molecular ions of their EI mass spectra are very weak or absent, but they are very strong in CI mass spectra. So we can obtain the structural information of the liquid crystal of phenyl benzoates combined CI spectra with interpretative EI spectra.