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High‐performance deep‐blue emitters with external quantum efficiencies (EQEs) exceeding 5 % are still scarce in organic light‐emitting diodes (OLEDs). In this work, by introducing a [1,2,4]triazolo[1,5‐a] pyridine (TP) unit at the N1 position of phenanthroimidazole (PI), two luminescent materials, PTPTPA and PTPTPA, were obtained. Systematic photophysical analysis showed that the TP block is suitable...
The material PTPBTPA is reported in this work, which is shown in blue in the cover picture. It can act as a high‐efficiency deep blue emitter as well as an efficient host material for yellow (the color of the bull in the image) and red (the festive color, indicating the coming of the Spring Festival) phosphors. Combining the blue fluorescence and yellow or red phosphorescence produced high‐performance...
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