The synthesis and photoluminescence characteristics of novel α,β-diarylacrylonitrile derivatives containing both a biphenyl group and a triphenylamine unit

2-(4-Bromophenyl)-3-(4-diphenylaminophenyl)acrylonitrile was prepared by the base catalysed condensation of 4-diphenylaminobenzaldehyde and 2-(4-bromophenyl)acetonitrile A series of alpha beta-dia-rylacrylonitrile derivatives containing both a biphenyl group and a triphenylamine unit were synthesized from 2-(4-bromophenyl)-3-(4-diphenylaminophenyl)acrylonitrile and boronic acids via a Suzuki reaction The structures of these compounds were characterized using FTIR H-1 NMR C-13 NMR MS and elemental analysis The UV-vis absorption and photoluminescent spectra of these derivatives were investigated These compounds emit green fluorescence with maximum emission peaks of 500-550 nm in CH2Cl2 solution and in the solid state under UV irradiation Analysis revealed good thermal stability with a decomposition temperature ranging from 279-386 degrees C (C) 2010 Elsevier Ltd All rights reserved