期刊
CHEMICAL COMMUNICATIONS
卷 52, 期 64, 页码 9941-9944出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6cc03895f
关键词
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资金
- Engineering and Physical Sciences Research Council First Grant [EP/N021789/1]
- Marie Curie Career Integration Grant [618777]
- Engineering and Physical Sciences Research Council [1492484, 1490458, EP/N021789/1] Funding Source: researchfish
- EPSRC [EP/N021789/1] Funding Source: UKRI
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.
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