Facile modification of phosphole-based aggregation-induced emission luminogens with sulfonyl isocyanates

Phosphole oxides undergo a highly chemoselective reaction with sulfonyl isocyanates forming sulfonylimino phospholes in high yields. This facile modification proved to be a powerful tool for obtaining new phosphole-based aggregation-induced emission (AIE) luminogens with high fluorescence quantum yields in the solid state. Changing the chemical environment of the phosphorus atom of the phosphole framework results in a significant shift of the fluorescence maximum to longer wavelengths.

Automated summary

Phosphole oxides react with sulfonyl isocyanates, forming sulfonylimino phospholes in high yields. This facile modification allows for the synthesis of new phosphole-based aggregation-induced emission (AIE) luminogens with high fluorescence quantum yields in the solid state. Changing the chemical environment of the phosphorus atom of the phosphole framework results in a significant red-shift of the fluorescence maximum.