Abstract
We report on the synthesis of highly oriented and nanostructured metal-organic framework (MOF) films featuring extreme surface wetting properties. The Ni- and Co- derivatives of the metal-catecholate series (M-CAT-1) were synthesized as highly crystalline bulk materials and thin films. Oriented pillar-like nanostructured M-CAT-1 films exhibiting pronounced needle-like morphology on gold substrates were established by incorporating a crystallization promoter into the film synthesis. These nanostructured M-CAT-1 MOF films feature extreme wetting phenomena, specifically superhydrophilic and underwater superoleophobic properties with water and underwater oil-contact angles of 0 degrees and up to 174 degrees, respectively. The self-cleaning capability of the nanostructured, needle-like M-CAT-1 films was illustrated by measuring time-dependent oil droplet rolling-off a tilted surface. The deposition of the nanostructured Ni-CAT-1 film on a large glass substrate allowed for the realization of an efficient, transparent, antifog coating, enabling a clear view even at extreme temperature gaps up to approximate to 120 degrees C. This work illustrates the strong link between MOF film morphology and surface properties based on these framework materials.
Item Type: | Journal article |
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Faculties: | Chemistry and Pharmacy > Department of Chemistry |
Research Centers: | Center for NanoScience (CENS) |
Subjects: | 500 Science > 540 Chemistry 500 Science > 500 Science |
ISSN: | 2190-4286 |
Language: | English |
Item ID: | 83253 |
Date Deposited: | 15. Dec 2021, 15:07 |
Last Modified: | 15. Dec 2021, 15:07 |