In this study, a series of bipolar fluorescence emitters named 2DPAc-OXD, DPAc-OXD,\n2PTZ-OXD and PTZ-OXD were designed and synthesized with excellent yields. The characterization\nof materials was investigated by using nuclear magnetic resonance (NMR) (1H, 13C), mass\nspectrometry and thermogravimetric analysis (TGA). To investigate device efficiencies, two different\nOLED devices (Device 1, Device 2) were fabricated with two different host materials (Bepp2, DPEPO).\nThe Device 2 with 2PTZ-OXD as fluorescent emitter exhibited excellent power and current efficiencies\nof 6.88 Lm/W and 10.10 cd/A, respectively. The external quantum efficiency of 2PTZ-OXD was\naround 3.99% for Device 2. The overall device properties of phenothiazine donor were better than\nacridine derivatives.
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