Functionalized Benzo Imidazole Derivatives And Their Iridium Complexes Were Designed And Synthesized Characterized

The traditonal fluorescent lightting materials could just utilize singlet excition which is just about 25% in all excetions. The luminous efficiency of organic electroluminescence materials with iridium as nucleus is much higher due to their ability to utilize both singlet and triplet excition. Electroluminescence Ir complex now is a important part of OLED and has became a popular topic. So it is meaningful to study the properties of electroluminescence Ir complex. In this paper we had designed a serial of new compositions and synthesized a serial of benzimidazole derivant. We expect the performance of the holes migration can be enhanced by adding carbazole to the N-position and the O, N-position. And study the effect to the material of change in modification group quantities.We characterized the compounds by melting point apparatus, elementary analysis, IR, MS and NMR. We study the optical properties of the compounds by UA, fluorescence emission spectrum.In brief we synthesised a serial of new electroluminescence materials with iridium as nucleus and study their properties.