[en] We present an experimental study supported by molecular simulations of the influence of the shape of alkyl side groups on the interactions and self-organization of supramolecular assemblies, built from bis-urea-substituted toluene molecules deposited on Au(111) surfaces. In particular, we demonstrate the crucial importance of the presence of branched alkyl groups (i.e., ethylhexyl) that allow two adjacent supramolecular polymers to arrange closer to each other, leading to the formation of molecular 'zippers'. Thus, steric constraints at the level of individual molecules can generate improved ordering between neighboring supramolecular polymers interacting with a planar substrate.
Disciplines :
Chemistry Physics
Author, co-author :
Vonau, F.
Linares, M.
Isare, B.
Aubel, D.
Habar, M.
Bouteiller, L.
Reiter, Günter
Geskin, V.M.
Zerbetto, F.
Lazzaroni, Roberto ; Université de Mons > Faculté des Sciences > Service de Chimie des matériaux nouveaux
Simon, L.
Language :
English
Title :
Branched Substituents Generate Improved Supramolecular Ordering in Physisorbed Molecular Assemblies
Publication date :
26 March 2009
Journal title :
Journal of Physical Chemistry. C, Nanomaterials and interfaces
ISSN :
1932-7447
Publisher :
American Chemical Society, Washington, United States - District of Columbia
Volume :
113
Issue :
12
Pages :
4955-4959
Peer reviewed :
Peer Reviewed verified by ORBi
Research unit :
S817 - Chimie des matériaux nouveaux
Research institute :
R400 - Institut de Recherche en Science et Ingénierie des Matériaux
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