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Issue 3, 2016
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Imparting Brønsted acidity into a zeolitic imidazole framework

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Abstract

In this work, we demonstrate the impartment of Brønsted acidity into a zeolitic imidazole framework, ZIF-90, via post-synthetically oxidizing the aldehyde group into carboxylate group to afford ZIF-90-COOH. The preservation crystallinity and porosity after post-synthetic oxidation was confirmed by powder X-ray diffraction studies and N2 gas adsorption analysis respectively. The successful conversion of the aldehyde group into carboxylate group was verified by FT-IR studies, which resulted in remarkable enhancement of methylene blue uptake in the resultant ZIF-90-COOH due to the strong electrostatic interactions between cationic methylene blue and the anionic carboxylate group.

Graphical abstract: Imparting Brønsted acidity into a zeolitic imidazole framework

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Publication details

The article was received on 31 Oct 2015, accepted on 04 Jan 2016 and first published on 06 Jan 2016


Article type: Research Article
DOI: 10.1039/C5QI00229J
Citation: Inorg. Chem. Front., 2016,3, 393-396
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    Imparting Brønsted acidity into a zeolitic imidazole framework

    K. Williams, L. Meng, S. Lee, L. Lux, W. Gao and S. Ma, Inorg. Chem. Front., 2016, 3, 393
    DOI: 10.1039/C5QI00229J

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