Adsorption of Cu phthalocyanine on Pt modified Ge(001): A scanning tunneling microscopy study

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Saedi, Amirmehdi and Berkelaar, Robin P. and Kumar, Avijit and Poelsema, Bene and Zandvliet, Harold J.W. (2010) Adsorption of Cu phthalocyanine on Pt modified Ge(001): A scanning tunneling microscopy study. Physical Review B: Condensed matter and materials physics, 82 (16). p. 165306. ISSN 1098-0121

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Abstract:The adsorption configurations of copper phthalocyanine (CuPc) molecules on platinum-modified Ge(001) have been studied using scanning tunneling microscopy. After deposition at room temperature and cooling down to 77 K the CuPc molecules are still dynamic. However, after annealing at 550±50 K, the adsorption configurations of the CuPc molecules change and the CuPc molecules do not exhibit any dynamics at 77 K. This is indicative of a transition from a physisorbed to a chemisorbed state. We suggest that during annealing, the CuPc molecule binds with the substrate dimers via a cycloaddition reaction. Atomic models are proposed for the different adsorption configurations
Item Type:Article
Copyright:© 2010 The American Physical Society
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/74002
Official URL:http://dx.doi.org/10.1103/PhysRevB.82.165306
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