Synthesis and Chiroptical Properties of One-Handed Helical Oligo-o-phenylene-ethynylenes Using Planar Chiral [2.2]Paracyclophane

Both enantiomers of a one-handed helical molecule consisting of an o-arylene-ethynylene skeleton were prepared using a planar chiral [2.2]paracyclophane. The helicity of the molecule was controlled by its planar chirality. Excellent chiroptical properties were observed; in particular, the molecule emitted intense circularly polarized luminescence with a high vertical bar g(lum)vertical bar value of the order of 10(-2).

Automated summary

In this study, both enantiomers of a one-handed helical molecule with an o-arylene-ethynylene skeleton were prepared using a planar chiral [2.2]paracyclophane, and the helicity of the molecule was controlled by its planar chirality. Excellent chiroptical properties, especially intense circularly polarized luminescence with a high g(lum) value on the order of 10(-2), were observed.