Controlled Exfoliation of Layered Silicate Heterostructures into Bilayers and Their Conversion into Giant Janus Platelets
| Autor: | Sebastian Gödrich, Andreas Fery, Peter Lindner, Maximilian Seuss, Georg Papastavrou, Hussein Kalo, Herbert Thurn, Jens W. Neubauer, Michael W. Möller, Sabine Rosenfeldt, Stephan Förster, Matthias Stöter, Josef Breu, Patrick Feicht |
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| Rok vydání: | 2016 |
| Předmět: |
Thin layers
Chemistry Bilayer Heterojunction Nanotechnology Cleavage (crystal) General Chemistry 02 engineering and technology General Medicine 010402 general chemistry 021001 nanoscience & nanotechnology Exfoliation joint 01 natural sciences Catalysis Nanomaterials 0104 chemical sciences Monolayer Hybrid material 0210 nano-technology |
| Zdroj: | Angewandte Chemie (International ed. in English). 55(26) |
| ISSN: | 1521-3773 |
| Popis: | Ordered heterostructures of layered materials where interlayers with different reactivities strictly alternate in stacks offer predetermined slippage planes that provide a precise route for the preparation of bilayer materials. We use this route for the synthesis of a novel type of reinforced layered silicate bilayer that is 15 % stiffer than the corresponding monolayer. Furthermore, we will demonstrate that triggering cleavage of bilayers by osmotic swelling gives access to a generic toolbox for an asymmetrical modification of the two vis-a-vis standing basal planes of monolayers. Only two simple steps applying arbitrary commercial polycations are needed to obtain such Janus-type monolayers. The generic synthesis route will be applicable to many other layered compounds capable of osmotic swelling, rendering this approach interesting for a variety of materials and applications. |
| Databáze: | OpenAIRE |
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