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- Title
High‐Quality Thin Films of UiO‐66‐NH<sub>2</sub> by Coordination Modulated Layer‐by‐Layer Liquid Phase Epitaxy.
- Authors
Semrau, A. Lisa; Fischer, Roland A.
- Abstract
We report the fabrication of macroscopically and microscopically homogeneous, crack‐free metal‐organic framework (MOF) UiO‐66‐NH2 (UiO: Universitetet i Oslo; [Zr6O4(OH)4(bdc‐NH2)6]; bdc‐NH22−: 2‐amino‐1,4‐benzene dicarboxylate) thin films on silicon oxide surfaces. A DMF‐free, low‐temperature coordination modulated (CM), layer‐by‐layer liquid phase epitaxy (LPE) using the controlled secondary building block approach (CSA). Efficient substrate activation was determined as a key factor to obtain dense and smooth coatings by comparing UiO‐66‐NH2 thin films grown on ozone and piranha acid‐activated substrates. Films of 2.60 μm thickness with a minimal surface roughness of 2 nm and a high sorption capacity of 3.53 mmol g−1 MeOH (at 25 °C) were typically obtained in an 80‐cycle experiment at mild conditions (70 °C, ambient pressure).
- Subjects
UNIVERSITETET i Oslo; LIQUID phase epitaxy; THIN films; SILICON surfaces; SILICON oxide films; SURFACE roughness
- Publication
Chemistry - A European Journal, 2021, Vol 27, Issue 33, p8509
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.202005416