Fig. 1: Electrostatic potential of TBTA and its adsorption configuration and intermolecular interactions on the surface.

a Calculated electrostatic potential map of TBTA. b Molecular structures of r-TBTA and s-TBTA. For clarity, r-TBTA and s-TBTA are colored blue and green, respectively. c Homochiral and heterochiral recognition of TBTA through type I and type II Br⋯Br contacts, respectively. The red dots represent the Br atoms. The type I and type II Br⋯Br contacts are denoted with a red dashed line and blue dashed arrows, respectively.