Title: Organisation of the enantiomeric and racemic forms of an amphiphilic resorcinol derivative at the air-water and graphite-liquid interfaces
Authors: Lavicoli, Patrizia ×
Xu, Hong
Tamas, Keszthelyi
Telegdic, Judit
Wurst, Klaus
Van Averbeke, Bernard
Saletra, Wojciech J.
Minoia, Andrea
Beljonne, David
Lazzaroni, Roberto
De Feyter, Steven
Amabilino, David #
Issue Date: Feb-2012
Publisher: J. Wiley
Series Title: Chirality vol:24 issue:2 pages:155-166
Abstract: This article describes a study of the outcome of racemate condensation in different types of monolayers. The study was performed on a resorcinol surfactant bearing an octadecyl chain and a lactate group which formed a monolayer at the interface of graphite and 1-phenyloctane as well as a Langmuir film at the airwater interface. Control experiments with the enantiopure materials provided the characteristics of the chiral organizations. The results obtained on the racemate show that on graphite the molecule forms chiral domains, indicating that spontaneous resolution takes place at the surface, a phenomenon that has been rationalized using molecular modeling. The X-ray crystal structure of the DMSO solvate of one of the enantiomers shows a similar type of packing to this monolayer. On the other hand, in the Langmuir layer it appears that the formation of a racemic compound is favoured, as it is in the solid state in three dimensions. The work shows how the symmetry restrictions in different environments can have a critical influence on the outcome of racemate organization, and underline the tendency of graphite to favour symmetry breaking in monolayers formed at its surface. Chirality 24:155-166, 2012. (c) 2011 Wiley Periodicals, Inc.
ISSN: 0899-0042
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Imaging and Photonics
× corresponding author
# (joint) last author

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