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Probing the chemical structure of monolayer covalent-organic frameworks grown via Schiff-base condensation reactions.
- Source :
-
Chemical communications (Cambridge, England) [Chem Commun (Camb)] 2016 Aug 02; Vol. 52 (64), pp. 9941-4. - Publication Year :
- 2016
-
Abstract
- Two-dimensional covalent-organic frameworks (2D-COFs) on surfaces offer a facile route to new 2D materials. Schiff-base condensation reactions have proven to be an effective fabrication route for such materials. We present scanning tunneling microscopy (STM) and X-ray photoelectron spectroscopy (XPS) studies of porphyrin 2D-COFs grown at a solid-vapour interface. XPS shows that covalent links between porphyrins consist of a mixture of imines and hemiaminals, a non-conjugated intermediate in the Schiff-base condensation reaction. These results demonstrate that environmental conditions during growth can have an important impact on the chemical composition of Schiff-base 2D-COFs.
Details
- Language :
- English
- ISSN :
- 1364-548X
- Volume :
- 52
- Issue :
- 64
- Database :
- MEDLINE
- Journal :
- Chemical communications (Cambridge, England)
- Publication Type :
- Academic Journal
- Accession number :
- 27436064
- Full Text :
- https://doi.org/10.1039/c6cc03895f