Abstract
The organic molecule tetracyanoquinodimethane (TCNQ) is a strong charge acceptor with a large tendency to form metal–organic charge transfer compounds. Using a low temperature scanning tunneling microscope we characterize the self-organization of TCNQ in ultra-thin films on a Au(111) surface and its electronic structure. We find that the molecules are weakly adsorbed on the metal, forming extended networks stabilized by hydrogen bonds. Despite its strong acceptor character, we find a negligible charge transfer from the metal surface.
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