Reticular Growth of Graphene Nanoribbon 2D Covalent Organic Frameworks
| Autor: | Cameron Rogers, Gregory Veber, Juan Pablo Llinas, Wade S. Perkins, Alexander Liebman-Peláez, Felix R. Fischer, Jim Ciston, Christian S. Diercks, Jeffrey Bokor, Chenhui Zhu, Kyunghoon Lee |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Graphene General Chemical Engineering Bilayer Biochemistry (medical) Nanotechnology 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Biochemistry Exfoliation joint 0104 chemical sciences law.invention Crystal Chemical bond Covalent bond law Materials Chemistry Environmental Chemistry 0210 nano-technology Graphene nanoribbons Macromolecule |
| Zdroj: | Chem. 6:1125-1133 |
| ISSN: | 2451-9294 |
| DOI: | 10.1016/j.chempr.2020.01.022 |
| Popis: | Summary The reticular synthesis of covalent organic frameworks (COFs), extended porous two-dimensional (2D) or three-dimensional (3D) networks held together by strong, highly directional chemical bonds, has thus far been restricted to small, shape-persistent, molecular building blocks. Here, we demonstrate the growth of crystalline 2D COFs from a polydisperse macromolecule derived from single-layer graphene, bottom-up synthesized quasi-one-dimensional (1D) graphene nanoribbons (GNRs). X-ray scattering and transmission electron microscopy reveal that 2D sheets of GNR-COFs self-assembled at a liquid-liquid interface stack parallel to the layer boundary and exhibit an orthotropic crystal packing. Liquid-phase exfoliation of multilayer GNR-COF crystals gives access to large-area (>105 nm2) bilayer and trilayer cGNR-COF films. The functional integration of extended 1D materials into crystalline COFs greatly expands the structural complexity and the scope of mechanical and physical materials properties accessible through a deterministic reticular bottom-up approach. |
| Databáze: | OpenAIRE |
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