Preparation of carbon nanomembranes without chemically active groups
| Autor: | Christof Neumann, Andrey Turchanin, Krzysztof Kozieł, Martha Frey, Zian Tang, Monika Szwed, Piotr Cyganik |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Materials science Scanning electron microscope Carboxylic acid self-assembled monolayers Substrate (chemistry) chemistry.chemical_element low-energy-electron-irradiation-induced cross-linking Self-assembled monolayer 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 2D materials 01 natural sciences 0104 chemical sciences X-ray photoelectron spectroscopy Chemical engineering chemistry Monolayer Electron beam processing General Materials Science carboxylic acid 0210 nano-technology Carbon carbon nanomembranes (CNM) |
| Popis: | The electron-irradiation-induced synthesis of carbon nanomembranes (CNMs) from aromatic thiol-based self-assembled monolayers (SAMs) on gold substrate is a well-established method to form molecular thin nanosheets. These molecular two-dimensional materials can be prepared with tunable properties; therefore, they find a variety of applications in nanotechnology ranging from ultrafiltration to nanobiosensors. However, no chemically inert CNM was fabricated up to now, as the reactive thiol group is present on the membrane surface even after transferring it to other substrates. Here, we study the electron irradiation of carboxylic acid-based SAMs on a silver substrate as an alternative route for CNM formation. Our analysis, based on a combination of X-ray photoelectron spectroscopy and scanning electron microscopy demonstrates that for this type of SAMs, purely carbonaceous CNMs with tunable porosity can be obtained. |
| Databáze: | OpenAIRE |
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