Issue 11, 2013

ZIF-8 crystal coatings on a polyimide substrate and their catalytic behaviours for the Knoevenagel reaction

Abstract

ZIF-8 crystal coatings were prepared by direct growth on different flexible polyimide substrates including a thin membrane and electrospun nanofiber mat. In SEM pictures, the ZIF-8 crystals exhibit a rhombic dodecahedron morphology. Owing to the flexible polyimide substrate, the MOF–polymer film may be moderately bent or easily tailored when not destroyed. The ZIF-8 coatings can be activated at high temperature owing to the excellent thermal resistance and low coefficient of thermal expansion of the polyimide. Furthermore, this material may be used as an efficient heterogeneous catalyst for the Knoevenagel reaction and can be easily recovered. The ZIF-8 coatings and 2-methylimidazole show similar catalytic behaviour as a weak base.

Graphical abstract: ZIF-8 crystal coatings on a polyimide substrate and their catalytic behaviours for the Knoevenagel reaction

Supplementary files

Article information

Article type
Paper
Submitted
18 Sep 2012
Accepted
11 Dec 2012
First published
11 Dec 2012

Dalton Trans., 2013,42, 3936-3940

ZIF-8 crystal coatings on a polyimide substrate and their catalytic behaviours for the Knoevenagel reaction

R. Jin, Z. Bian, J. Li, M. Ding and L. Gao, Dalton Trans., 2013, 42, 3936 DOI: 10.1039/C2DT32161K

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