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Oxadiazole-Based Highly Efficient Bipolar Fluorescent Emitters for Organic Light-Emitting Diodes

Qiong Wu, Ramanaskanda Braveenth, Heng Qiang Zhang, Il-Ji Bae, Miyoung Kim, Kyu Yun Chai

Molecules. 2018 Apr 7;23(4):843.

PMID: 29642430

Abstract:

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

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
AP220694906 Bepp2 Bepp2 220694-90-6 Price
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