Ultrathin Monomolecular Films and Robust Assemblies Based on Cyclic Catechols
| Autor: | Elisseos Verveniotis, Cesar Rodriguez-Emmenegger, Andres de los Santos Pereira, Bernd Reck, Corinna M. Preuss, Anja S. Goldmann, Matthias Zorn, Christopher Barner-Kowollik, Markus M. Zieger, Ognen Pop-Georgievski |
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| Rok vydání: | 2016 |
| Předmět: |
Kelvin probe force microscope
Catechol Chemistry Electrospray ionization Analytical chemistry 02 engineering and technology Surfaces and Interfaces 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Mass spectrometry 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Dynamic light scattering Highly oriented pyrolytic graphite Electrochemistry Proton NMR Molecule General Materials Science 0210 nano-technology Spectroscopy |
| Zdroj: | Langmuir : the ACS journal of surfaces and colloids. 33(3) |
| ISSN: | 1520-5827 |
| Popis: | We introduce a newly designed catechol-based compound and its application for the preparation of homogeneous monomolecular layers as well as for robust assemblies on various substrates. The precisely defined cyclic catechol material (CyCat) was prepared from ortho-dimethoxybenzene in a phenolic resin-like synthesis and subsequent deprotection, featuring molecules with up to 32 catechol units. The CyCat’s chemical structure was carefully assessed via matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF), proton nuclear magnetic resonance (1H NMR), diffusion ordered spectroscopy (2D DOSY) and high resolution electrospray ionization mass spectrometry (ESI MS) experiments. The formation of colloidal aggregates of the CyCat material in alkaline solution was followed by dynamic light scattering (DLS) and further verified by dropcasting CyCat from solution on highly oriented pyrolytic graphite (HOPG), which was examined by Kelvin probe force microscopy (KPFM). The adsorption be... |
| Databáze: | OpenAIRE |
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