C3‐symmetric triple thia/sulfone[6]helicene with dual emissions

Four novel triple thia/sulfone[6]helicenes with C3 symmetry were obtained via Scholl reaction and sulfonation. Their helical structures were confirmed by X‐ray crystal analysis. These helicenes show dual emission of fluorescence and phosphorescence, and enantiomers BTT[6]H exhibit novel dual emission of circularly polarized luminescence (CPL) or circularly polarized phosphorescence (CPP) at 77 K.