Research Papers in Physics and Astronomy


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Published in Journal of Physics: Condensed Matter 21:5 (February 4, 2009), 052001 (5 pp); doi 10.1088/0953-8984/21/5/052001 Copyright © 2009 IOP Publishing Ltd. Used by permission.


In combined photoemission and inverse photoemission spectroscopy studies, we observe changes in the metal phthalocyanine molecular orbital offsets with respect to the conducting gold substrate Fermi level, with the changing d-electron filling of the metal (II) (Co, Ni, Cu) phthalocyanines. The implication is that the interfacial dipole layer depends upon the choice of metal (Co, Ni, Cu) centers within the metal (II) phthalocyanines adsorbed on Au(111).

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