Oxadisilole-fused9-aminoacridines and 12-aminobenzo[b]acridines have been synthesized by the nucleophilic addition and 1,5-hydrogen shift reaction of arynes with 2-aminobenzonitriles in good yield at room temperature. Dioxatrisilole-fused 9-aminoacridines have also been obtained. The photophysical, redox, and thermal properties of these compounds have been determined. The oxadisilole-fused 9-aminoacridines