Di Santo G, Blankenburg S, Castellarin-Cudia C, Fanetti M, Borghetti P, Sangaletti L, Floreano L, Verdini A, Magnano E, Bondino F, Pignedoli CA, Nguyen MT, Gaspari R, Passerone D, Goldoni A. Supramolecular engineering through temperature-induced chemical modification of 2H-tetraphenylporphyrin on Ag(111): flat phenyl conformation and possible dehydrogenation reactions.
Chemistry 2011. [PMID:
22113855 DOI:
10.1021/jp111151n]
[Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
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. 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.
Collapse