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Course description:
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Methods of monolayer assembly. Properties of Langmuir monolayers at the air-water interface. Monolayer forming molecules. Choice of solvent and subphase. Monolayer formation, structure and interactions: surface pressure and surface potential isotherms, Brewster angle microscopy (BAM) imaging, dipole moment measurement. Modification of substrates by Langmuir-Blodgett and Langmuir-Schaefer techniques: monolayer and layer-by-layer deposition procedures. Choice and preparation of substrates. Stability of films on substrates: Intermolecular interactions and interactions of molecules with substrates. Kinetics of monolayer formation.. Self-assembly of organothiolated molecules. Probing structure and dynamics of self-assembled monolayers by spectroscopy and microscopy methods, contact angle measurements, ellipsometry. Electrochemical and electrooptical properties: conductivity, capacitance, photoconductivity, electrochromic properties. Electron and mass transport through monolayers. Electron tunneling - superexchange and hoping mechanism. Applications of organized layers. Monolayer and bilayer molecular junctions. Monolayer protected clusters (MPCs): preparation and unique properties. Thin films for molecular electronic devices, modeling of biological membranes, catalytic and electrocatalytic surfaces, molecular recognition and analyte sensing.
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