Thermodynamics of 4,4′-stilbenedicarboxylic acid monolayer self-assembly at the nonanoic acid-graphite interface

W. Song, N. Martsinovich, W. M. Heckl, M. Lackinger

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

A direct calorimetric measurement of the overall enthalpy change associated with self-assembly of organic monolayers at the liquid-solid interface is for most systems of interest practically impossible. In previous work we proposed an adapted Born-Haber cycle for an indirect assessment of the overall enthalpy change by using terephthalic acid monolayers at the nonanoic acid-graphite interface as a model system. To this end, the sublimation enthalpy, dissolution enthalpy, the monolayer binding enthalpy in vacuum, and a dewetting enthalpy are combined to yield the total enthalpy change. In the present study the Born-Haber cycle is applied to 4,4′-stilbenedicarboxylic acid monolayers. A detailed comparison of these two aromatic dicarboxylic acids is used to evaluate and quantify the contribution of the organic backbone for stabilization of the monolayer at the nonanoic acid-graphite interface.

Original languageEnglish
Pages (from-to)13239-13247
Number of pages9
JournalPhysical Chemistry Chemical Physics
Volume16
Issue number26
DOIs
StatePublished - 14 Jul 2014

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