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Issue 64, 2016
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Probing the chemical structure of monolayer covalent-organic frameworks grown via Schiff-base condensation reactions

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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.

Graphical abstract: Probing the chemical structure of monolayer covalent-organic frameworks grown via Schiff-base condensation reactions

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Supplementary files

Article information


Submitted
09 May 2016
Accepted
14 Jul 2016
First published
14 Jul 2016

This article is Open Access

Chem. Commun., 2016,52, 9941-9944
Article type
Communication
Author version available

Probing the chemical structure of monolayer covalent-organic frameworks grown via Schiff-base condensation reactions

Y. Hu, N. Goodeal, Y. Chen, A. M. Ganose, R. G. Palgrave, H. Bronstein and M. O. Blunt, Chem. Commun., 2016, 52, 9941
DOI: 10.1039/C6CC03895F

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