Changes of the molecule-substrate interaction upon metal inclusion into a porphyrin.

Authors :: Di Santo G
Sfiligoj C
Castellarin-Cudia C
Verdini A
Cossaro A
Morgante A
Floreano L
Goldoni A
Source :: Chemistry (Weinheim an der Bergstrasse, Germany) [Chemistry] 2012 Oct 01; Vol. 18 (40), pp. 12619-23. Date of Electronic Publication: 2012 Aug 22.
Publication Year :: 2012
Abstract: Metal-dependent conformations: a change in the adaptation of tetraphenylporphyrins (TPPs) on Ag(111) was observed in the presence of a metal ion in the macrocycle. Upon annealing at T>575 K, 2H-TPP molecules increase the overlap of the phenyl π orbitals with the substrate, thus reducing the distance. The presence of Co creates a strong bond between Co dz(2) and the Ag sp states, leaving the porphyrin macrocycle at a larger distance to the surface.<br /> (Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)

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