A series of novel 1,3,4-oxadiazole derivatives containing F and CF₃ groups were synthesized and their optical and electrochemical properties were studied. The result showed that the compounds con-taining CF₃ had lower LUMO levels than those containing no fluoro group, but the phenyl unit containing four F groups in 1,3,4-oxadiazole compound had no significant effect on its photo-electric prop-erties.

Key words: oxadiazole derivative, fluorine-containing organic compound, synthesis, photo-electric property