Synthesis of a figure-eight azahelicene dimer with high emission and CPL properties

Abstract

Circular polarized luminescence (CPL) is useful for advanced optical devices. However, it is difficult to achieve strong emission and high CPL properties at the same time. Herein, we synthesized a bisbutadiyne bridged azahelicene dimer with a figure-eight shape, which exhibited both high fluorescence quantum yield and the g value. The enhancement is due to the rigid conformation of the dimer.