In this work, we report a novel chromophore, 11,11-dimethyl-11H-indeno[1,2-b]indolo[1,2,3-jk]carbazole (IDFL), developed from a indenocarbazole building block and a blue fluorescent emitter, 11,11-dimethyl-N²,N²,N⁸,N⁸-tetraphenyl-11H-indeno[1,2-b]indolo[1,2,3-lm]carbazole-2,8-diamine (IDFL-2DPA), derived from the IDFL by diphenylamine functionalization. The device fabricated using the IDFL-2DPA emitter offered blue emission with a very small full-width at half maximum of 32 nm in addition to high external quantum efficiency above 5% and 4 times longer lifetime than that of pyrene-based blue device. Therefore, the IDFL-2DPA emitter was appropriate as the pure blue emitter with high color purity, high efficiency, and long device lifetime.

在这项工作中，我们报告一个新的发色团，11,11-二甲基-11- ħ -茚并[1,2- b ]吲哚并[1,2,3 JK ]咔唑（IDFL），从茚并构建块和一个显影蓝色荧光发射体，11,11-二甲基-N ²，N ²，N ⁸，N ^8-四苯基-11 H-茚并[ 1,2- b ]吲哚[1,2,3- lm ]咔唑-2,8二胺（IDFL-2DPA） ，从派生IDFL由二苯胺的官能化。使用IDFL-2DPA制造的设备发射器提供的蓝光发射非常小，最大半峰宽仅为32 nm，此外还具有高于5％的高外部量子效率和比基于blue的蓝光器件长4倍的寿命。因此，IDFL-2DPA发射器适合作为具有高色纯度，高效率和长使用寿命的纯蓝色发射器。