Versatile nanografting pathway to functionally embellished fluorogenic small-molecule on two-dimensional inorganic surfaces
| Autor: | Dimitris Tsikritzis, Maria Androulidaki, Stella Kennou, Nikolaos Pelekanos, Daniel Gherca, Katerina Tsagaraki, Maria Vamvakaki |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
General Physics and Astronomy 02 engineering and technology Surfaces and Interfaces General Chemistry Fluorene 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Photochemistry 01 natural sciences Chloride Silane 0104 chemical sciences Surfaces Coatings and Films Contact angle chemistry.chemical_compound chemistry X-ray photoelectron spectroscopy Monolayer medicine Surface modification 0210 nano-technology Spectroscopy medicine.drug |
| Zdroj: | Surfaces and Interfaces. 23:100949 |
| ISSN: | 2468-0230 |
| DOI: | 10.1016/j.surfin.2021.100949 |
| Popis: | Nanografting as a pathway to create functionalized two-dimensional inorganic surfaces capable of immobilizing fluorogenic substituted-fluorene dye is demonstrated. Of particular importance is that the self-assembled monolayer of 3-aminopropyltriethoxysilane is successfully modified with 9H-fluorene-9-carbonyl chloride carbonyl chloride via amide coupling reactions. Physico-chemical properties of self-assembled monolayer are studied by water contact angle (WCA) measurements, atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). The optical properties were determined by photoluminescence spectroscopy. The WCA and AFM data suggest that employing the same functionalization protocol on two different surfaces, (SiO2/Si) and GaN/Al2O3 respectively, may lead to different but meaningful results. XPS results confirm fluorene dye covalently attached onto two-dimensional inorganic surfaces via self-assembled monolayer of aminopropyl silane. |
| Databáze: | OpenAIRE |
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