Synthesis and Characterization of Hexapole [7]Helicene, A Circularly Twisted Chiral Nanographene

J Am Chem Soc. 2018 Mar 28;140(12):4222-4226. doi: 10.1021/jacs.8b01447. Epub 2018 Mar 19.

Abstract

We report the synthesis and characterization of two hexapole [7]helicenes (H7Hs). Single crystal X-ray diffraction unambiguously confirms the molecular structure. H7H absorbs light, with distinct Cotton effect, from ultraviolet to the near-infrared (λmax = 618 nm). Cyclic voltammetry reveals nine reversible redox states, consecutively from -2 to +6. These chiroptical and electronic properties of H7H are inaccessible from helicene's small homologues.

Publication types

  • Research Support, Non-U.S. Gov't