Self-Assembly and Two-Dimensional Spontaneous Resolution of Cyano-Functionalized [7]Helicenes on Cu(111)

摘要

Effective control of chirality in supramolecular systems is an important challenge, for example in the fields of (heterogeneous) asymmetric catalysis and liquid crystals. The spontaneous resolution of a racemic compound into a conglomerate of enantiomeric crystals is based on a preference of molecules to make contacts with neighbors of the same chirality sense through supramolecular interactions. Although considerable progress has been made in the prediction of crystal structures, the occurrence of spontaneous resolution in the course of the formation of crystals in three dimensions (3D) still lacks reliable predictability.