Supramolecular Engineering through Temperature-Induced Chemical Modification of 2H-Tetraphenylporphyrin on Ag(111): Flat Phenyl Conformation and Possible Dehydrogenation Reactions

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 fi...

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Bibliographic Details
Published in:Chemistry : a European journal 2011-12, Vol.17 (51), p.14354-14359
Main Authors: Di Santo, Giovanni, Blankenburg, Stephan, Castellarin-Cudia, Carla, Fanetti, Mattia, Borghetti, Patrizia, Sangaletti, Luigi, Floreano, Luca, Verdini, Alberto, Magnano, Elena, Bondino, Federica, Pignedoli, Carlo A., Nguyen, Manh-Thuong, Gaspari, Roberto, Passerone, Daniele, Goldoni, Andrea
Format: Article
Language:English
Subjects:
Chemistry
CC activation
Dehydrogenation
density functional calculations
Deposition
Flats
Mathematical analysis
Monolayers
Multilayers
Phenyls
porphyrinoids
scanning probe microscopy
Scratching
X-ray spectroscopy
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Summary: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.
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.201102268