Characterization and optical properties of novel unsymmetrical stilbene-based 1,3,4-oxadiazole derivatives

A series of novel unsymmetrical stilbene-based 1,3,4-oxadiazole derivatives were efficiently synthesized by a four-pots reaction sequence. All of the title compounds were characterized by MS, 1H-NMR and elemental analysis. UV–Vis absorption and fluorescence emission spectra of the compounds were investigated in dilute chloroform solution; the compounds exhibit strong blue-green fluorescence ranged from 397 to 499 nm and show potential for application in organic optical materials.

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► Novel stilbene-based 1,3,4-oxadiazole derivatives were efficiently synthesized.
► The 1,3,4-oxadiazole unit was successfully introduced into the molecular structure.
► The compounds exhibited bright blue emission with high fluorescence quantum yields.
► The compounds have good electron affinities offering potential application in OLEDs.