Mediated coadsorption at the liquid-solid interface: Stabilization through hydrogen bonds

Lorenz Kampschulte, Stefan Griessl, Wolfgang M. Heckl, Markus Lackinger

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63 Scopus citations


Stable adsorption of l,3,5-tris(4-pyridyl)-2,4,6-triazine (TPT) molecules from the liquid phase was only observed in binary solutions, that is, in the presence of a second (adsorptive) species. The process of mediated coadsorption of a molecular species at the liquid-solid interface was accomplished through complexation of TPT with a second type of molecule acting as a "molecular glue" via hydrogen bonds. Scanning tunneling microscopy (STM) was utilized to investigate the structure of the coadsorbed monolayers at the liquid-solid interface. Trimesic acid (TMA) and terephthalic acid (TPA)-both benzene rings with disposed carboxylic acid groups-were appropriate to precipitate the stable adsorption of TPT. According to the different symmetry and number of carboxylic acid groups, various networks were observed.

Original languageEnglish
Pages (from-to)14074-14078
Number of pages5
JournalJournal of Physical Chemistry B
Issue number29
StatePublished - 28 Jul 2005
Externally publishedYes


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