Two-dimensional conjugated organogold networks with anthra-tetrathiophene repeat models are synthesized by thermally activated debrominative coupling of two,5,9,12-tetrabromoanthra[1,2-b:4,3-b′:5,6-b′′:8,7-b′′′]tetrathiophene (TBATT) precursor molecules on Au(111) surfaces underneath ultra-high vacuum (UHV) circumstances. Performing the response on iodine-passivated Au(111) surfaces promotes formation of extremely common constructions, as revealed by Scanning Tunneling Microscopy (STM). In distinction, coupling on pristine Au(111) surfaces leads to irregular networks as a result of simultaneous expression of competing intermolecular binding motifs within the absence of error correction. The carbon-Au-carbon bonds confer distinctive robustness to the organogold networks, as evidenced by their superior thermal stability. As well as, as urged by Density Useful Principle (DFT) calculations and corroborated by Scanning Tunneling Spectroscopy (STS), the organogold networks are extremely π-conjugated, leading to a small digital band hole within the order of 1.0 eV.
