High-Resolution Imaging of Copper-Phthalocyanine by Scanning-Tunneling Microscopy

Scanning-tunneling microscopy (STM) images of isolated Cu-phthalocyanine molecules on a Cu(100) substrate exhibit atomic scale features which agree well with Ḧckel molecular-orbital calculations. Images which show a molecule atop a measurably corrugated Cu(100) surface, a hopping molecule, packed molecular arrays, and a novel molecular binding site at a Cu step edge further illustrate the potential of STM for molecular observations. © 1989 The American Physical Society.