Unravelling Self-Assembly Mechanisms of Exotic Molecules at the Air/Liquid Interface

Orateur : Juan J. GINER-CASARES (Department of Physical Chemistry, University of Córdoba, Spain)

The incorporation of exotic molecules, self-assembling chemical groups and inorganic nanoparticles in Langmuir monolayers provides detailed insights in the mechanism of molecular interactions.[1] The Langmuir technique assures a fine control over the self-assembling processes, determining the available surface area and applied surface pressure. The availability of experimental techniques for the in situ characterization of Langmuir monolayers offers exciting possibilities. Plasmonic nanoparticles serve as excellent building blocks for assembling supramolecular structures that mimic biological behaviour. We have explored mechanosensation, i. e., conversion of applied pressure to defined modification in molecular arrangements. This feature has been achieved through hybridization of the nanoparticles with a purposefully designed self-assembling molecule based on non-covalent intermolecular interactions.[2] In the research line of biological based materials, Fmoc-functionalized dipeptides are used to build chiral nanowires with different applications. Herein I will discuss on the molecular parameters that lead to an efficient self-assembly of the dipeptides at fluid interfaces. Cooperative self-assembly of gold nanoparticles at the air/liquid interface

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