The present invention relates to a host material comprising a compound having a carbazole moiety which is suitable for blue-emitting OLEDs. Surprisingly, it has been found that when appropriate substituents are present in the carbazole structure, the solubility of the compounds can be improved without any adverse effect on the OLED performance. The present invention further relates to the use of the host materials and to an organic light emitting device comprising the host material.
本发明涉及一种宿主材料,包括一种具有
咔唑基团的化合物,适用于蓝色发光的有机发光二极管(OLED)。令人惊讶的是,发现当
咔唑结构中存在适当的取代基时,化合物的溶解性可以提高,而不会对OLED性能产生任何不良影响。本发明还涉及宿主材料的用途以及包括宿主材料的有机发光装置。