Surface Structure of MOF Revealed by High-Resolution Atomic Force Microscopy
14 October 2008
Researchers in Europe have investigated the surface structure of an individual metal-organic framework (MOF) microcrystal grown on a functionalized surface for the first time in air and vacuum using high-resolution atomic force microscopy. Among their other potential uses, MOFs are being investigated for hydrogen storage applications.
|Images of the MOF crystal. Click to enlarge.|
The data from the surface analysis was utilized to optimize the MOF formation procedure to obtain a defect-free surface structure. Comparison of obtained data with recent microscopic studies performed on the same MOF crystal but grown by a conventional procedure shows a much higher quality of crystals produced by surface oriented growth.
The new method for preparing crystals suitable for microscopic analysis is also much faster (3 days compared to 2 years) and, in contrast to the conventional method, produces material suitable for in situ study. These results thus demonstrate for the first time the possibility of nanoscale investigation/modification of MOF surface structure.
The work is described in a paper published online 14 October in the Journal of the American Chemical Society.
Katarzyna Szelagowska-Kunstman, Piotr Cyganik, Maria Goryl, Denise Zacher, Zita Puterova, Roland A. Fischer, and Marek Szymonski (2008) Surface Structure of Metal-Organic Framework Grown on Self-Assembled Monolayers Revealed by High-Resolution Atomic Force Microscopy. ASAP J. Am. Chem. Soc., doi: 10.1021/ja8069743
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