Aromatic polyethers containing 1,3,4-oxadiazole rings were prepared by nucleophilic substitution polymerization technique of 2,5-bis(p-fluorophenyl)-1,3,4-oxadiazole with various aromatic bisphenols, such as 4,4 '-isopro-pylidenediphenol, 4,4 '-(1,4-phenylene-diisopropylidene)bisphenol, 4,4 '-(hexafluoroisopropylidene)diphenol, 4,4 '-cyclohexylidene-bisphenol and 4,4'-dihydroxybiphenyl. They showed high thermal stability with decomposition temperature above 400 degrees C and glass transition temperature in the range of 187-211 degrees C. Solutions of some polymers in INN-dimethylformamide exhibited fluorescence, having maximum emission wavelength in the range of 373-377 nm.