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A series of novel carbazole-based materials, DPACz1, DPACz2 and DPACz3 having diphenylamino moieties at 1- and 8-positions of carbazole have been synthesized and characterized for the first time. The introduction of diphenylamino substituents at 1- or 1,8-positions of carbazole resulted into increase of the band-gap compared with the previously reported 3,6- or 2,7-substituted ones. The HOMO levels...
Development of new materials for solution-processable organic light-emitting diodes (OLEDs) has been gaining much attention recently. Although many results have been reported about new OLED materials, most of them are aiming for vacuum-deposition. The OLED materials developed for vacuum-deposition cannot be easily applied to solution processing due to their limited solubility and processability. We...
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