Premium
Adsorption and Dynamics of Long‐Range Interacting Fullerenes in a Flexible, Two‐Dimensional, Nanoporous Porphyrin Network
Author(s) -
Kiebele Andreas,
Bonifazi Davide,
Cheng Fuyong,
Stöhr Meike,
Diederich François,
Jung Thomas,
Spillmann Hannes
Publication year - 2006
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200600186
Subject(s) - fullerene , porphyrin , nanoporous , chemical physics , scanning tunneling microscope , adsorption , supramolecular chemistry , molecular dynamics , materials science , nanotechnology , chemistry , computational chemistry , crystallography , photochemistry , crystal structure , organic chemistry
10.1002/cphc.200600186.abs Herein, a detailed investigation of the adsorption and dynamics of C 60 and C 70 fullerenes hosted in a self‐assembled, two‐dimensional, nanoporous porphyrin network on a solid Ag surface is presented. Time‐resolved scanning tunneling microscopy (STM) studies of these supramolecular systems at the molecular scale reveal distinct host–guest interactions giving rise to a pronounced dissimilar mobility of the two fullerenes within the porphyrin network. Furthermore, long‐range coverage‐dependent interactions between the all‐carbon guests, which clearly affect their mobility and are likely mediated by a complex mechanism involving the Ag substrate and the flexible porphyrin host network, are observed. At increased fullerene coverage, this unprecedented interplay results in the formation of large fullerene chains and islands. By applying a lattice gas model with nearest‐neighbor interactions and by evaluating the fullerene‐pair distribution functions, the respective coverage‐dependent guest–guest interaction energies are estimated.