Title: Expression of chirality and visualization of stereogenic centers by scanning tunneling microscopy
Authors: De Feyter, Steven ×
Gesquiere, André
Grim, Kees
De Schryver, Frans
Valiyaveettil, S
Meiners, C
Sieffert, M
Mullen, K #
Issue Date: Jan-1999
Publisher: Amer chemical soc
Series Title: Langmuir vol:15 issue:8 pages:2817-2822
Abstract: Physisorbed monolayer films of both enantiomers of a chiral terephthalic acid derivative, 2,5-bis[[10-(2-methylbutoxy)decyl]oxy]terephthalic acid, have been characterized on graphite (HOPG) at the solution-substrate interface using scanning tunneling microscopy (STM). The monolayers, which are imaged with submolecular resolution, are enantiomorphous. The adlayer consists of a lamellar structure in which two distinct lamellar widths can be identified. The lamellar width can be directly related to the length of that part of the molecule which is adsorbed on the graphite surface. In the narrow lamellae, the 2-methylbutoxy groups point away from the surface, giving rise to specific features in the STM image. These features can be described as discontinuous, elongated spots and appear also at the positions of the stereogenic centers. Because of the presence of the methyl group at the stereogenic center, the tunneling current is locally modulated, enabling the visualization of the stereogenic center.
ISSN: 0743-7463
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Imaging and Photonics
Chemistry - miscellaneous
× corresponding author
# (joint) last author

Files in This Item:

There are no files associated with this item.

Request a copy


All items in Lirias are protected by copyright, with all rights reserved.

© Web of science