Results -- Self-Assembly and Individual Appearance of Tetraphenylporphyrins on Ag(111) -- Self-Assembly and Individual Appearance of Cobalt(II)-Tetrakisditertbutylphenylporphyrins on Ag(111) -- Coordination of Iron and Cobalt Atoms by Tetraphenylporphyrin Monolayers on Ag(111) and Formation of Metal(II)-Tetraphenylporphyrin -- Different Aspects of 2H-Tetrakis-di-tert-butylphenylporphyrin on Ag(111) -- Direct Metalation of a Phthalocyanine Monolayer on Ag(111) with Co-adsorbed Iron Atoms -- Multicomponent Adlayers of Tetraphenylporphyrins on Ag(111) -- Modification of the Growth of Iron on Ag(111) by Predeposited Organic Monolayers -- Geometric and Electronic Aspects of CoTPP upon Dosage of NO -- Self-Assembly and Voltage-Dependent Appearance of Octaethylporphyrins -- Summary and Outlook -- Fundamentals -- Experimental Setup.

The self-assembly of large organic molecules has become a vividly explored and interdisciplinary field in science. One major goal is the tailored fabrication of highly ordered, molecular networks, which are stabilized on a metal surface. Metalloporphyrins receive particular attention, because their distinct intrinsic functionalities make them promising candidates for applications in chemical sensors, solar cells, and for tailored catalytic processes. Based on scanning tunneling microscopy investigations, several novel and fundamental contributions are presented, which has led to a new level of understanding. Highlights are the results with respect to intramolecular conformation and supramolecular ordering, electronic interactions with the substrate, surface confined synthesis such as in-situ metallation reactions, and ligand effects.The number of publications this work has led to emphasises its quality and significance.