A Hexabenzocoronene‐Based Helical Nanographene. Issue 45 (10th July 2020)

• Record Type: Journal Article
• Authors: Martin, Max M.; Hampel, Frank; Jux, Norbert
• Is Part Of: Chemistry. Volume 26:Issue 45(2020)
• Page Start: 10210
• Page End: 10212
• Publication Date: 2020-07-10
• Subjects: carbon allotrope -- helicene -- hexabenzocoronene -- nanographene -- polycyclic aromatic hydrocarbons; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.202001471
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: A synthetic route towards a novel hexabenzocoronene‐based helical nanographene motif was developed. A hexaphenylbenzene precursor was therefore designed, which cannot undergo, due to steric restrictions, a complete planarization reaction. This precursor was transformed under oxidative cyclodehydrogenation conditions to a π‐extended [5]helicene, which was fully characterized including X‐ray diffraction analysis. Abstract : A twisted nanographene that is based on the well‐established hexabenzocoronene motif is presented. A [5]helical unit was implemented into the nanographene structure with the help of steric repulsive effects. The π‐extended helicene was characterized by UV/Vis absorption and emission spectroscopy as well as X‐ray crystallography.