Synthesis of figure-of-eight helical bisBODIPY macrocycles and their chiroptical properties†
Abstract
A macrocyclic bisBODIPY (bis(boron-dipyrromethene)) complex [1B2] with a figure-of-eight helicity was synthesized and successfully resolved. [1B2] was proven to be one of the most efficient red-emitting CPL (circularly polarized luminescence) fluorophores reported to date (λ = 663 nm, |glum| = 9 × 10−3, ΦF = 0.58).