Two novel blue phosphorescent host materials containing phenothiazine-5,5-dioxide structure derivatives.

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ID: 178
2018
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Abstract
Two novel D-A bipolar blue phosphorescent host materials based on phenothiazine-5,5-dioxide: 3-(9-carbazol-9-yl)-10-ethyl-10-phenothiazine-5,5-dioxide (CEPDO) and 10-butyl-3-(9-carbazol-9-yl)-10-phenothiazine-5,5-dioxide (CBPDO) were synthesized and characterized. The photophysical, electrochemical and thermal properties were systematically investigated. CEPDO and CBPDO not only have a high triplet energy but also show a bipolar behavior. Moreover, their fluorescence emission peaks are in the blue fluorescence region at 408 nm and the fluorescence quantum efficiency (Φ) of CEPDO and CBPDO were 62.5% and 59.7%, respectively. Both CEPDO and CBPDO showed very high thermal stability with decomposition temperatures () of 409 and 396 °C as well as suitable HOMO and LUMO energy levels. This preferable performance suggests that CEPDO and CBPDO are alternative bipolar host materials for the PhOLEDs.
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xie2018two Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Xie, Feng-Ming;Ou, Qingdong;Zhang, Qiang;Zhang, Jiang-Kun;Dai, Guo-Liang;Zhao, Xin;Wei, Huai-Xin;
Journal Beilstein journal of organic chemistry
Year 2018
DOI
10.3762/bjoc.14.73
URL
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