Author/Authors :
Hou، نويسنده , , Xiaoya and Li، نويسنده , , Ting Cheng and Yin، نويسنده , , Chengrong and Xu، نويسنده , , Hui and Lin، نويسنده , , Jian and Hua، نويسنده , , Yu-Ran and Chen، نويسنده , , Dao-Yong and Xie، نويسنده , , Ling-Hai and Huang، نويسنده , , Wei، نويسنده ,
Abstract :
A series of complicated 9,9-diarylfluorenes (CDAFs) with highly thermal and morphological stability, end-capped oligothiophenes (T)n(PF)m (n = 1–3, m = 2) and triphenylamines TPA(PF)m (m = 1–3), were synthesized via BF3·Et2O-mediated Friedel–Crafts reaction. TPA(PF)2 with bulky 9-phenylfluorene moieties (PFMs) as a morphological stabilizer possesses excellently amorphous solid state with a glass transition temperature (Tg) up to 140 °C and no Tg was observed for TPA(PF)3 with high decomposition temperature up to 499 °C. Preliminary characterizations of typical double-layer devices with the configuration of ITO/TPA(PF)3/AlQ3/Mg:Ag show luminance efficiency of ca. 2.25 cd/A at 100 cd/m2 with a maximum brightness of ca. 8300 cd/m2.
Keywords :
Complicated 9 , 9-diarylfluorenes (CDAFs) , Hole-transporting materials , Triphenylamine , Friedel–Crafts reaction , Oligothiophenes
