Supramolecular Engineering through Temperature-Induced Chemical Modification of 2H-Tetraphenylporphyrin on Ag(111): Flat Phenyl Conformation and Possible Dehydrogenation Reactions (pages 14354–14359)
Dr. Giovanni Di Santo, Dr. Stephan Blankenburg, Dr. Carla Castellarin-Cudia, Dr. Mattia Fanetti, Dr. Patrizia Borghetti, Prof. Luigi Sangaletti, Dr. Luca Floreano, Dr. Alberto Verdini, Dr. Elena Magnano, Dr. Federica Bondino, Dr. Carlo A. Pignedoli, Dr. Manh-Thuong Nguyen, Dr. Roberto Gaspari, Dr. Daniele Passerone and Dr. Andrea Goldoni
Article first published online: 23 NOV 2011 | DOI: 10.1002/chem.201102268
Scratching the surface: Formation of a monolayer of 2H-tetraphenylporphyrins (2H-TPP) on Ag(111), either by sublimation of a multilayer in the range 525–600 K or by annealing (at the same temperature) a monolayer deposited at room temperature, induces a chemical modification of the molecules (see figure). Rotation of the phenyl rings into a flat conformation is observed and tentatively explained, by using DFT calculations, as a peculiar reaction due to molecular dehydrogenation.