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Unbalanced 2D Chiral Crystallization of Pentahelicene Propellers and Their Planarization into Nanographenes.


ABSTRACT: The chiral self-assembly of trispentahelicene propellers on a gold surface has been investigated in ultrahigh vacuum by means of scanning tunneling microscopy and time-of-flight secondary ion mass spectrometry. The trispentahelicene propellers aggregate into mirror domains with an enantiomeric ratio of 2 : 1. Thermally induced cyclodehydrogenation leads to planarization into nanographenes, which self-assemble into closed-packed layers with two different azimuths. Further treatment induces in part dimerization and trimerization by intermolecular cyclodehydrogenation.

SUBMITTER: Voigt J 

PROVIDER: S-EPMC8362048 | biostudies-literature |

REPOSITORIES: biostudies-literature

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