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IOP Publishing, Nanotechnology, 2(15), p. S91-S96

DOI: 10.1088/0957-4484/15/2/019

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Cu-TBPP and PTCDA molecules on insulating surfaces studied by ultra-high-vacuum non-contact AFM

Journal article published in 2004 by Laurent Nony, Roland Prof. Bennewitz, Oliver Dr. Pfeiffer, Enrico Dr. Gnecco, Alexis Prof. Baratoff, Ernst Prof. Meyer, Toyoaki Eguchi, André Gourdon ORCID, Chrisitan Joachim
This paper is available in a repository.
This paper is available in a repository.

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Abstract

The adsorption of two kinds of porphyrin (Cu-TBPP) and perylene (PTCDA) derived organic molecules deposited on KBr and Al2O3 surfaces has been studied by non-contact force microscopy in ultra-high vacuum, our goal being the assembly of ordered molecular arrangements on insulating surfaces at room temperature. On a Cu(100) surface, well ordered islands of Cu-TBPP molecules were successfully imaged. On KBr and Al2O3 surfaces, it was found that the same molecules aggregate in small clusters at step edges, rather than forming ordered monolayers. First measurements with PTCDA on KBr show that nanometre-scale rectangular pits in the surface can act as traps to confine small molecular assemblies.