The present invention relates to a host material comprising a compound having two carbazole moieties 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.
本发明涉及一种主体材料,包括一种具有两个
咔唑基团的化合物,适用于蓝色发光的OLED。令人惊讶的是,发现当
咔唑结构中存在适当的取代基时,化合物的溶解性能可以得到改善,而不会对OLED性能产生任何不良影响。本发明还涉及主体材料的使用以及包括主体材料的有机发光装置。