K W Hipps - Metal d-Orbital Occupation-Dependent Images in the Scanning Tunneling Microscopy of Metal Phthalocyanines

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  Publication Details (including relevant citation   information):

  Hipps, K. W., Lu, Xing, Wang, X. D., Mazur, Ursula The   Journal of Physical Chemistry 1996  100 (27) 11207-11210

  Abstract: A strong d-orbital dependence in the   scanning tunneling microscopy image of metal phthalocyanines is   demonstrated. Unlike copper phthalocyanine (CuPc) wherein the   central metal appears as a hole in the molecular image, the   cobalt atom in CoPc is the highest point (about 0.3 nm) in the   molecular image. On the other hand, the benzene ring regions of   CoPc and CuPc appear to have the same height. These data are   consistent with theoretical calculations that predict a large   contribution of cobalt d-orbitals near the Fermi energy. An   intriguing aspect of this work is that it may be possible to   chemically identify the different metal phthalocyanines simply by   their appearance. This is demonstrated for the case of a mixed   monolayer of CuPc and CoPc on Au(111).

  Address (URL): http://dx.doi.org/10.1021/jp960422o