Title: Dynamics in physisorbed monolayers of 5-alkoxy-isophthalic acid derivatives at the liquid/solid interface investigated by scanning tunneling microscopy
Authors: Gesquiere, AndrĂ© ×
Abdel-Mottaleb, MM
De Feyter, Steven
De Schryver, Frans
Sieffert, M
Mullen, K
Calderone, A
Lazzaroni, R
Bredas, JL #
Issue Date: Jan-2000
Publisher: Wiley-v c h verlag gmbh
Series Title: Chemistry - a European Journal vol:6 issue:20 pages:3739-3746
Abstract: Monolayers of isophthalic acid derivatives at the liquid/solid interface have been studied with scanning tunneling microscopy (STM). We have investigated the dynamics related to the phenomenon of solvent co-deposition, which was previously observed by our research group when using octan-1-ol or undecan-1-ol as solvents for 5-alkoxyisophthalic acid derivatives. This solvent co-deposition has now been visualized in real-time (two frames per second) for the first time. Dynamics of individual molecules were investigated in mixtures of semi-fluorinated molecules with video-STM. The specific contrast arising from fluorine atoms in STM images allows us to use this functionality as a probe to analyze the data obtained for the mixtures under investigation. Upon imaging the same region of a monolayer for a period of time we observed that non-fluorinated molecules progressively substitute the fluorinated molecules. These findings illustrate the metastable equilibrium that exists at the liquid/solid interface, between the physisorbed molecules and the supernatant solution.
ISSN: 0947-6539
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Chemistry - miscellaneous
Molecular Imaging and Photonics
× corresponding author
# (joint) last author

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