Synthesis and characterization of oxadisilole-fused phenanthridines and dioxatrisilole-fused phenanthridines from benzyne

Abstract

An efficient protocol for the synthesis of oxadisilole-fused phenanthridines and dioxatrisilole-fused phenanthridines by aza Diels–Alder reactions and dehydrogenation aromatization reactions of benzyne with N-benzylideneanilines in good yields at room temperature. The photophysical, redox and thermal properties of oxadisilole-fused phenanthridines have been determined. The oxadisilole-fused phenanthridines show potential applications used as blue emitters for OLED due to their high fluorescence quantum yields and thermal stabilities.