ИСТИНА

The development of reliable blue OLEDs with high efficiency and stability is still an Immediate task, since their characteristics largely lag behind the green and red ones.1 Thus, significant efforts have been made to improve the performance of blue OLED displays. Recently, due to conceptual advances in molecular design, sky-blue OLED displays based on phosphorescence or thermally activated delayed fluorescence materials as emitters or sensitizers for fluorophores have been rapidly developing both in terms of efficiency and service life. In this work, we obtained both knowni,ii and new fluorophores based on indolocarbazole and diindolophenazine cores for blue OLEDs.