Room temperature supramolecular repositioning at molecular interfaces using a scanning tunneling microscope

Individual C-60 molecules adsorbed on a monolayer of 4,4'-dimethyl bianthrone first grown on Cu(111) have been repositioned at room temperature with the tip of a scanning tunneling microscope. The procedure can be applied to C-60 without disrupting the 4,4'-dimethyl bianthrone film. Controlled supramolecular repositioning at a molecular interface has allowed us to assemble lateral C-60 patterns that define a bimolecular C-60 - 4,4'-dimethyl bianthrone heterojunction on Cu(111).