A new synthetic procedure for fluorinated N-fused ring, 2F-fluorazone (1,2-difluoro-9H-pyrrolo[1,2]-indol-9-one), has been developed. It connected with acetylene to obtain the first example of fluorinated N-fused rings luminescent liquid crystals (LLCs). CH₃O-fluorazone-2F and CH₃O-fluorazone display yellow and orange fluorescence respectively, and their properties can be tuned by the substitution pattern.

中文翻译：

---

面向橙色/黄色发光液晶分子的N稠合环策略

已开发出一种新的合成方法，用于氟化N稠环2F-氟酮（1,2-二氟-9H-吡咯并[1,2]-吲哚-9-一）。它与乙炔连接以获得氟化的N稠合环发光液晶（LLC）的第一个示例。CH ₃ O形fluorazone-2F和CH ₃分别O形fluorazone显示黄色和橙色荧光，以及它们的性质可以通过取代模式进行调谐。