Synthesis of Pyrene-Bearing Oligothiophenes an Novel Light Emitting Materials and Their Application to Single-Organic-Layer Electroluminescence Devices

摘要

Ter- and quaterthiophenes bearing pyrenes at the terminal #alpha# or #beta# positions have been synthesized as novel emitting materials in organic electroluminescence devices.The efficient sin-gel-layer EL devices of these compounds are fabricated by use of an Al/ultrathin LiF bilayer cathode.One of them exhibits a maximum Iuminance of 1860 cd/m~2 and a luminous efficiency of 0.15 Im/W,which are of the highest performance class among single-organic-layer EL devices.