A new luminescent azaindole derivative has been designed and synthesized to be implemented in a light-emitting device. The molecular geometry and frontier orbital energy have been investigated by using density functional theory. This newly synthesized molecule emits strongly both in solution and solid state. The fluorescence emission in THF upon addition of an increasing amount of H₂O has been measured also, displaying an increase of the fluorescence signal which is associated with an aggregation-induced emission phenomenon. Double-layer light-emitting devices including an active layer of the novel emissive material were successfully fabricated. The red-shift of the electroluminescence spectra with respect to the photoluminiscence emission was attributed to the presence of different types of complexes in the emissive material (EM) layer, which are preferentially formed between the nearest-neighbor hole–electron pairs of the electron injection and the EM layers (electroplex).

中文翻译：

---

基于氮杂吲哚衍生物作为有机发光器件固态发射体的简单供体-受体发光剂

已经设计并合成了新的发光的氮杂吲哚衍生物，以在发光器件中实现。利用密度泛函理论研究了分子的几何形状和前沿轨道能量。这个新合成的分子在溶液和固态下都强烈发射。加入越来越多的H ₂后，THF中的荧光发射还测量了O，显示出与聚集诱导的发射现象有关的荧光信号的增加。成功地制造了包括新型发光材料的有源层的双层发光器件。电致发光光谱相对于光致发光发射的红移归因于在发射材料（EM）层中存在不同类型的络合物，这些络合物优先形成在电子注入的最邻近的空穴-电子对之间和EM层（电子复合体）。