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Surface Supported Gold–Organic Hybrids: On‐Surface Synthesis and Surface Directed Orientation
Author(s) -
Zhang Haiming,
Franke JörnHolger,
Zhong Dingyong,
Li Yan,
Timmer Alexander,
Arado Oscar Díaz,
Mönig Harry,
Wang Hong,
Chi Lifeng,
Wang Zhaohui,
Müllen Klaus,
Fuchs Harald
Publication year - 2014
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201303011
Subject(s) - dimer , homolysis , scanning tunneling microscope , covalent bond , materials science , dissociation (chemistry) , surface modification , crystallography , chemistry , photochemistry , nanotechnology , organic chemistry , radical
The surface‐assisted synthesis of gold–organic hybrids on Au (111) and Au (100) surfaces is repotred by thermally initiated dehalogenation of chloro‐substituted perylene‐3,4,9,10‐tetracarboxylic acid bisimides (PBIs). Structures and surface‐directed alignment of the Au–PBI chains are investigated by scanning tunnelling microscopy in ultra high vacuum conditions. Using dichloro‐PBI as a model system, the mechanism for the formation of Au–PBI dimer is revealed with scanning tunnelling microscopy studies and density functional theory calculations. A PBI radical generated from the homolytic C‐Cl bond dissociation can covalently bind a surface gold atom and partially pull it out of the surface to form stable PBI‐Au hybrid species, which also gives rise to the surface‐directed alignment of the Au–PBI chains on reconstructed Au (100) surfaces.