Nanostructured and oriented metal–organic framework films enabling extreme surface wetting properties

• Andre Mähringer,
• Julian M. Rotter and
• Dana D. Medina

Beilstein J. Nanotechnol. 2019, 10, 1994–2003, doi:10.3762/bjnano.10.196

• . Keywords: antifog; antifouling; biomimetic coatings; metal–organic frameworks (MOFs); superhydrophilic; superoleophobic; thin films; vapor-assisted conversion; Introduction Over millions of years, plants and animals have evolved a spectrum of surface designs enabling specific wetting properties tailored

• the solid/water interface on the identical pelletized sample. A) A scheme of the vapor-assisted conversion (VAC) set up and the resulting nanostructured films. B) SEM top view, 30° tilted cross-section and the related GIWAXS pattern of the Co-CAT-1 film. C) SEM top view, 30° tilted cross-section

• were synthesized as highly crystalline bulk materials. The M-CAT-1 surface energy was estimated by contact angle measurements using pellet samples exposing nonoriented crystallites on the surface. Next, oriented and compact Co- and Ni-CAT-1 films were deposited on gold surfaces by vapor-assisted