Title: Supramolecular control of two-dimensional phase behavior
Authors: De Feyter, Steven ×
Larsson, M
Schuurmans, N
Verkuijl, B
Zoriniants, G
Gesquiere, A
Abdel-Mottaleb, MM
van Esch, J
Feringa, BL
van Stam, J
De Schryver, Frans #
Issue Date: Jan-2003
Publisher: Wiley-v c h verlag gmbh
Series Title: Chemistry - a European Journal vol:9 issue:5 pages:1198-1206
Abstract: We have used directed two-component self-assembly to "pattern" organic monolayers on the nanometer scale at the liquid/solid interface. The ability of the scanning tunneling microscope to investigate structural details in these adlayers was used to gain insight into the two-component two-dimensional phase behavior. The components are symmetrically alkylated bisurea derivatives (Rl-urea-spacer-urea-R2; R1, R2=alkyl, spacer=alkyl or bisthiophene). The bisthiophene unit acts as a marker and its bisurea derivative (T2) is a component in all the mixtures investigated. By varying the position of the hydrogen-bond forming urea groups along the molecule and the length of the alkyl chains of the other components, the effect of 1) hydrogen bonding, 2) molecule length, 3) odd-even effects, and 4) shape complementarity on the two-dimensional phase behavior was investigated. Insight into the effect of these parameters leads to the control of the two-dimensional patterning: from randomly intermixed systems to phase separation.
ISSN: 0947-6539
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Imaging and Photonics
× corresponding author
# (joint) last author

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