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Title: Self-Assembly Behavior of Alkylated Isophthalic Acids Revisited: Concentration in Control and guest-Induced Phase Transformation
Authors: Park, Kwang-Won ×
Adisoejoso, Jinne
Plas, Jan
Hong, Jongin
Müllen, Klaus
De Feyter, Steven #
Issue Date: 24-Nov-2014
Publisher: American Chemical Society
Series Title: Langmuir vol:30 issue:50 pages:15206-15211
Abstract: The engineering of two-dimensional crystals by physisorption-based molecular self-assembly at the liquid−solid interface is a powerful method to functionalize and nanostructure surfaces. The formation of high-symmetry networks from low-symmetry building blocks is a particularly important target. Alkylated isophthalic acid (ISA) derivatives are early test systems, and it was demonstrated that to produce a so-called porous hexagonal packing of plane group p6, i.e., a regular array of nanowells, either short alkyl chains or the introduction of bulky groups within the chains were mandatory. After all, the van der Waals interactions between adjacent alkyl
chains or alkyl chains and the surface would dominate the ideal hydrogen bonding between the carboxyl groups, and therefore, a close-packed lamella structure (plane group p2) was uniquely observed. In this contribution, we show two versatile approaches to circumvent this problem, which are based on well-known principles: the “concentration in control” and the “guest-induced transformation” methods. The successful application of these methods makes ISA suitable building blocks to engineer a porous pattern, in which the distance between the pores can be tuned with nanometer precision.
ISSN: 0743-7463
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Imaging and Photonics
× corresponding author
# (joint) last author

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