Synthesis and Optical Properties of D-A Type Organic Molecules Based on Fluorene and Carbazole

Abstract

The new compounds F2 and C2 have been successfully synthesized via the Vilsmeier-Haack reaction, which were designed to construct D-A type organic conjugated molecules composed of central fluorene and carbazole donating units and two aldehyde terminal accepting groups. Optical properties of the resulting compounds were examined by UV-vis and fluorescence spectroscopies. The fluorescence spectra of F2 and C2 both exhibiting strong emission peaks in the blue light regions, are expected to be promising pure blue materials for organic light-emitting diodes applications.