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High-Quality Thin Films of UiO-66-NH₂ by Coordination Modulated Layer-by-Layer Liquid Phase Epitaxy.

ABSTRACT: We report the fabrication of macroscopically and microscopically homogeneous, crack-free metal-organic framework (MOF) UiO-66-NH₂ (UiO: Universitetet i Oslo; [Zr₆ O₄ (OH)₄ (bdc-NH₂ )₆ ]; bdc-NH₂ ^2- : 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).

SUBMITTER: Semrau AL

PROVIDER: S-EPMC8251636 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature

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High-Quality Thin Films of UiO-66-NH2 by Coordination Modulated Layer-by-Layer Liquid Phase Epitaxy.

Semrau A Lisa AL Fischer Roland A RA

Chemistry (Weinheim an der Bergstrasse, Germany) 20210513 33

We report the fabrication of macroscopically and microscopically homogeneous, crack-free metal-organic framework (MOF) UiO-66-NH2 (UiO: Universitetet i Oslo; [Zr6 O4 (OH)4 (bdc-NH2 )6 ]; bdc-NH2 2- : 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 ...[more]

PMID: 33830544

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