Journal
CHEMPHYSCHEM
Volume 10, Issue 15, Pages 2623-2627Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.200900489
Keywords
diffusion; metal-organic frameworks; nanoporous materials; surface permeation; zeolites
Funding
- Deutsche Forschungsgemeinschaft
- Max-Buchner-Forschungsstiftung
- Fonds der Chemischen Industrie
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Recording the evolution of concentration profiles in nanoporous materials opens a new field of diffusion research with particle ensembles. The technique is based on the complementary application of interference microscopy and IR micro-imaging. Combining the virtues of diffusion measurements with solids and fluids, it provides information of unprecedented wealth and visual power on transport phenomena in molecular ensembles. These phenomena include the diverging uptake and release patterns for concentration-dependent diffusivities, the mechanisms of mass transfer at the fluid-solid interface and opposing tendencies in local and global concentration evolution.
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