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Molecular docking sites designed for the generation of highly crystalline covalent organic frameworks
- Source :
- Nature Chemistry. 8:310-316
- Publication Year :
- 2016
- Publisher :
- Springer Science and Business Media LLC, 2016.
-
Abstract
- Covalent organic frameworks (COFs) formed by connecting multidentate organic building blocks through covalent bonds provide a platform for designing multifunctional porous materials with atomic precision. As they are promising materials for applications in optoelectronics, they would benefit from a maximum degree of long-range order within the framework, which has remained a major challenge. We have developed a synthetic concept to allow consecutive COF sheets to lock in position during crystal growth, and thus minimize the occurrence of stacking faults and dislocations. Hereby, the three-dimensional conformation of propeller-shaped molecular building units was used to generate well-defined periodic docking sites, which guided the attachment of successive building blocks that, in turn, promoted long-range order during COF formation. This approach enables us to achieve a very high crystallinity for a series of COFs that comprise tri- and tetradentate central building blocks. We expect this strategy to be transferable to a broad range of customized COFs. Covalent organic frameworks (COFs) are attractive multifunctional porous materials that can be generated with atomic precision. However, endowing them with long-range order—desirable for applications—has remained challenging. Now, propeller-shaped building units have been used that allow consecutive layers to lock in position, resulting in highly crystalline COFs.
- Subjects :
- Chemistry
General Chemical Engineering
Inorganic chemistry
Stacking
Nanotechnology
02 engineering and technology
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
Crystal engineering
01 natural sciences
0104 chemical sciences
Crystallinity
Covalent bond
Docking (molecular)
Metal-organic framework
0210 nano-technology
Porous medium
Subjects
Details
- ISSN :
- 17554349 and 17554330
- Volume :
- 8
- Database :
- OpenAIRE
- Journal :
- Nature Chemistry
- Accession number :
- edsair.doi...........f357df420b6d32aa3317a189a5d9b65b