Circularly Polarized Luminescence of [6]Helicenes through Excited‐State Intramolecular Proton Transfer

We present the concept of combining circularly polarized luminescence (CPL) and excited-state intramolecular proton transfer (ESIPT) features into a single molecule as strategy to generate high-performance ESIPT-based CPL materials. For this purpose, [6]helicene bearing two ESIPT structural units was synthesized using double Suzuki–Miyaura reaction C(sp2)−H hydroxylation approach. The photophysical properties doubly hydroxylated were studied in parallel with non-hydroxylated control compound, revealing that presence chiral unit results strong response considerable red shift. red-shifted emission along outstanding glum (≈10−2) large Stokes shift makes promising candidate for use optoelectronics.