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Changes of the Molecule–Substrate Interaction upon Metal Inclusion into a Porphyrin
Author(s) -
Di Santo Giovanni,
Sfiligoj Cristina,
CastellarinCudia Carla,
Verdini Alberto,
Cossaro Albano,
Morgante Alberto,
Floreano Luca,
Goldoni Andrea
Publication year - 2012
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.201201640
Subject(s) - porphyrin , molecule , metal , substrate (aquarium) , atomic orbital , crystallography , chemistry , photochemistry , stereochemistry , materials science , electron , organic chemistry , physics , oceanography , quantum mechanics , geology
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 d z 2and the Ag sp states, leaving the porphyrin macrocycle at a larger distance to the surface (see figure).