새로운 청색 유기발광체인 안트라피라졸 유도체의 합성 및 특성

Abstract

The potential of organic semiconductor devices for light generation has been demonstrated by the commercialization of display technologies based on organic light-emitting diode (OLED). red & green phosphorescence OLED has been reported element having high quantum efficiency, but blue phosphorescence OLED has low efficiency so far. So, for improving property of lighting or display, it is essential that improving property of blue phosphorescence OLED. In this study, the new blue-light-emitting material, which is composed of anthrapyrazole with anthracene as main unit, was designed and synthesized. The structure, of the anthrapyrazole compound was identified by FT-IR and NMR spectroscopy. The light emitting characteristics and the thermal properties were characterized by UV-VIS/Fluorescence spectrophotometry and DSC/TGA, respectively. Thermo Gravimetric Analysis (TGA) revealed that the material is thermally stable upto 250℃. The synthesized anthrapyrazole derivative exhibited deep blue fluorescence is solution. Photoluminescence (PL) spectrum recorded at room temperature exhibited a broad blue emission peak at from 410 to 465 nm (λmax=413 nm).