Self-assembly of trimesic acid at the liquid-solid interface - A study of solvent-induced polymorphism

Markus Lackinger; Stefan Griessl; Wolfgang M. Heckl; Michael Hietschold; George W. Flynn

doi:10.1021/la0467640

Self-assembly of trimesic acid at the liquid-solid interface - A study of solvent-induced polymorphism

Markus Lackinger, Stefan Griessl, Wolfgang M. Heckl, Michael Hietschold, George W. Flynn

Research output: Contribution to journal › Article › peer-review

291 Scopus citations

Abstract

A scanning tunneling microscope operated under ambient conditions was utilized to study the self-assembly of trimesic acid (TMA) at the liquid-solid interface. On a graphite substrate, two different open, loosely packed, two-dimensional hydrogen-bond networks were found. Both structures exhibit a periodic arrangement of ∼1.0 nm wide cavities, which can be used for the co-adsorption of another species (guest) within the cells of this host system. These two polymorphs ("chickenwire" and "flower" structures) differ in their molecular packing density and hydrogen-bonding schemes. Using a homologous series of alkanoic acids as solvents, ranging from butyric to nonanoic, selective self-assembly of either the "flower" or "chickenwire" forms was achieved on a graphite surface. Solubility of TMA in these acid solvents was found to decrease with increasing chain length, and the longer-chain solvents favored formation of the chickenwire polymorph structure on the surface.

Original language	English
Pages (from-to)	4984-4988
Number of pages	5
Journal	Langmuir
Volume	21
Issue number	11
DOIs	https://doi.org/10.1021/la0467640
State	Published - 24 May 2005
Externally published	Yes

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AU - Lackinger, Markus

AU - Griessl, Stefan

AU - Heckl, Wolfgang M.

AU - Hietschold, Michael

AU - Flynn, George W.

PY - 2005/5/24

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Self-assembly of trimesic acid at the liquid-solid interface - A study of solvent-induced polymorphism

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