A semifluorinated isophthalic acid derivative and its mixtures with a number of nonfluorinated analogues have been investigated with scanning tunneling microscopy (STM) at the solution-graphite interface. The specific contrast arising from fluorine atoms in STM images allows us to use this functionality as a probe to aid in the analysis of the data obtained for the mixtures under investigation. Unlike the findings reported for other systems, we did not observe any segregation of fluorinated and nonfluorinated alkyl segments into microdomains that can be attributed to the incompatibility between the two components.

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The spontaneous formation of supramolecular assemblies at the boundary between solids and liquids is a process which encompasses a variety of systems with diverse characteristics: chemisorbed systems in which very strong and weakly reversible bonds govern the assembly and physisorbed aggregates which are dynamic thanks to the weaker interactions between adsorbate and surface. Here we review the interest and advances in the study of chiral systems at the liquid-solid interface, and also the application of this configuration for the study of systems of interest in molecular electronics, self-assembled from the bottom up.