Synthesis and Photoelectrical Properties of D-A Type Carbazole-quinoline

摘要

The key issues concerning the design and synthesis of high fluorescent efficiency,good thermal stability of organic blue materials should be solved urgently in organic light emitting diodes.In this article,three D-A type blue emitters based on carbazole and phenylquinoline with flexible chains were prepared through Friedlander condensation reaction in relatively high yield.The photoelectric properties of all compounds were studied by UV-vis absorption,emission spectra and cyclic voltammograms.Density functional theory calculations (DFT) were performed to obtain a better understanding of the electronic structures.Interestingly,compound a3 with the highest fluorescence quantum yield of 0.53 can be applied into blue light emission materials on account of good thermal performance.Furthermore,a1～a3 with narrow band gap make them become potential candidates in the fields of OLED,solar cells and OFET.