Facile synthesis and properties of binaphthyl-containing blue light emitting materials

Three kinds of novel organic materials containing binaphthyl units, BNOBPV, BNONV and BNOAV, were synthesized by Wittig–Horner reactions. Their photophysical and electroluminescent (EL) properties were studied. BNOBPV and BNONV exhibited pure blue light as emitting materials in organic light-emitting diodes (OLED) with EL spectra peaked at 444 nm and CIE coordinates around (0.157, 0.095) and (0.171, 0.112), respectively. BNOAV showed a red-shifted emission peaked at 496 nm, which may be ascribed to the contribution of anthracene moieties.