SYNTHESIS AND OPTICAL PROPERTIES OF POLYARYLIMIDAZOLE DERIVATIVES CONTAINING NAPHTHYL GROUPS IN THE 4,5-POSITIONS FOR COATED AND NON-DOPED OLED MATERIALS

摘要

In this study, we describe the development of an imidazole emitting material, characterized by low concentration quenching via a bulky substituent group, for coated and non-doped OLEDs. Specifically, we synthesized novel 1,2,4,5-tetraarylimidazoles that have naphthyl groups replacing the aryl groups at the 4,5-positions and investigated their optical, concentration quenching, thermal, and coating properties.