期刊
NEW JOURNAL OF CHEMISTRY
卷 42, 期 6, 页码 4317-4323出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7nj04482h
关键词
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资金
- National Natural Science Foundation of China [51773088, 21402088]
- National Natural Science Foundation of China-Pakistan Science Foundation [5161101159]
- Natural Science Foundation of Jiangsu Province [BY2016075-02]
Thermally activated delayed fluorescence (TADF) materials have been thoroughly developed and have proven to be the most promising means to generate an efficient deep blue emission. In this work, we prepared a series of deep blue TADF emitters based on trifluoromethyl featuring phenyl and N-heterocyclic rings as electron-withdrawing units and carbazole as electron-donating moieties. Efficient organic light-emitting diodes (OLEDs) utilizing these emitters have a deep blue emission and a high external quantum efficiency of up to 20.4%. These blue emitters are among the bluest in the TADF based OLED category. They can also be implemented in OLED as hosts for green phosphorescent iridium(iii) complexes, exhibiting high brightness and a decent external quantum yield.
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