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Effects of intermolecular interactions on the controlled assembly of organic monolayers: an STM study
Author(s) -
Yang Yanlian,
Deng Ke,
Zeng Qingdao,
Wang Chen
Publication year - 2006
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.2331
Subject(s) - coronene , scanning tunneling microscope , intermolecular force , supramolecular chemistry , monolayer , chemistry , density functional theory , molecule , hydrogen bond , layer (electronics) , crystallography , self assembled monolayer , chemical physics , nanotechnology , computational chemistry , materials science , organic chemistry , biochemistry
Representative types of intermolecular interactions were seen to affect self‐assembled molecular architectures, as studied by scanning tunneling microscopy (STM) under ambient conditions. As an example, the ππ interaction is attributed to the formation of chiral domains consisting of 4‐octadecylnitrobenzene (ONB). It is further demonstrated that the ONB assembly can serve as a buffer layer to immobilize coronene molecules on large areas of two‐dimensional close‐packed assemblies. Assemblies of 1,4‐dicarboxylic benzoic acid (DBA) and 4,4′‐bipyridine (Bpy) are associated with two different hydrogen‐bonded, two‐dimensional supramolecular networks. The results of theoretical calculations using density functional theory (DFT) are in qualitative agreement with the observed STM images. Copyright © 2006 John Wiley & Sons, Ltd.