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Supramolecular Engineering through Temperature‐Induced Chemical Modification of 2 H ‐Tetraphenylporphyrin on Ag(111): Flat Phenyl Conformation and Possible Dehydrogenation Reactions
Author(s) -
Di Santo Giovanni,
Blankenburg Stephan,
CastellarinCudia Carla,
Fanetti Mattia,
Borghetti Patrizia,
Sangaletti Luigi,
Floreano Luca,
Verdini Alberto,
Magnano Elena,
Bondino Federica,
Pignedoli Carlo A.,
Nguyen ManhThuong,
Gaspari Roberto,
Passerone Daniele,
Goldoni Andrea
Publication year - 2011
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201102268
Subject(s) - dehydrogenation , monolayer , tetraphenylporphyrin , sublimation (psychology) , chemistry , atmospheric temperature range , molecule , annealing (glass) , crystallography , photochemistry , materials science , polymer chemistry , porphyrin , organic chemistry , catalysis , psychology , physics , composite material , psychotherapist , biochemistry , meteorology
Scratching the surface : Formation of a monolayer of 2 H ‐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.