Synthesis of a Novel D-A Type Molecule Based on Carbazole Unit for Organic Light-Emitting Material Applications

Abstract

A novel D-A type molecule based on carbazole central core and aldehyde terminal groups has been designed and synthesized. Optical properties of the resulting compounds were examined by means of UV-vis and fluorescence spectroscopies. It shows that, the absorption and fluorescence spectra of M2 are large red-shifted relative to M1 in both states, whereas the absorption maximum and emission maxima of M1 and M2 are small blue-shifted, from solution to the solid state. The fluorescence spectra exhibit that the emission maxima of the compounds which range from 419 nm to 472 nm belong to blue light region. As expected, the target compounds should be a promising pure blue light-emitting material for applications in organic light-emitting diodes (OLEDs).