Steering Two-Dimensional Porous Networks with σ-Hole Interactions of Br···S and Br···Br

Abstract

The self-assembly of 3,10-dibromo-perylo[1,12-b,c,d]thiophene on Ag(111) leads to three types of ordered porous networks: honeycomb PN1, Kagome PN2, and hybrid PN3. Detailed experimental and theoretical analyses confirm the thermal stability order of the three constructed porous networks. High-resolution scanning tunneling microscopy images indicate the importance of two σ-hole interactions of Br···S and Br···Br in steering two-dimensional molecular assembly on metal surfaces.