Solvation of Nanostructured Interfaces

The structure of solvent at solid-liquid interfaces influences the interactions and reactions occurring on it, which has strong impacts for applications in diverse fields, such as wetting phenomena, electrochemistry or biotechnology. We particularly try to understand the influence of nanoscale structures formed on functional interfaces on the interfacial solvent structure.

To that end, SAMs are a convenient tool for designing interface nanostructures. Nanoscale phase separated SAMs are studied by resonance enhanced atomic force microscopy IR spectroscopy (RE AFM-IR), a method that allows interface spectroscopy with resolution in the region of ~10 nm. Experiments in humidified atmosphere will allow to study the structure of adsorbed ultrathin water layers that form on these interfaces. The aim is to obtain local structural information of water, adsorbed on nanostructured interfaces.

Another approach we follow, is the study of nanoparticles by means of solvation shell attenuated total reflection-infrared (ATR-IR) and Raman spectroscopy. This method includes multivariate data analysis approaches for which tools are developed in the group.

1.
Rabe, M.: Spectram: A MATLAB® and GNU octave toolbox for transition model guided deconvolution of dynamic spectroscopic data. Journal of Open Research Software 8, 13 (2020)

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