Growth of ZIF-8 MOF films with tunable porosity by using poly (1-vinylimidazole) brushes as 3D primers
- Allegretto, Juan Alejandro
- Iborra, Agustin
- Giussi, Juan Martín
- von Biderling, Catalina
- Ceolin, Marcelo Raul
- Moya, Sergio
- Azzaroni, Omar
- Rafti, Matias
DOIAbstract
This work reports on a novel and versatile approach to control the structure of metal–organic framework (MOFs) films by using polymeric brushes as 3D primers, suitable for triggering heterogeneous MOF nucleation. As a proof-of-concept, this work explores the use of poly(1-vinylimidazole) brushes primer obtained via surface-initiated atom transfer radical polymerization (SI-ATRP) for the synthesis of Zn-based ZIF-8 MOF films. By modifying the grafting density of the brushes, smooth porous films were obtained featuring inherently hydrophobic microporosity arising from ZIF-8 structure, and an additional constructional interparticle mesoporosity, which can be employed for differential adsorption of targeted adsorbates. It was found that the gra...
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