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Ultrathin hydrophobic films based on the metal organic framework UiO-66-COOH(Zr)

This work reports on the fabrication, optimization and characterization of ultrathin films containing submicrometer particles (sMPs) of the hydrophilic and water stable UiO-66-COOH(Zr) metal organic framework (MOF). MOF particles of ≈200 nm have been synthesized and assembled at the air–water interf...

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Autores principales: Andrés, Miguel A, Sicard, Clemence, Serre, Christian, Roubeau, Olivier, Gascón, Ignacio
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Beilstein-Institut 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6423563/
https://www.ncbi.nlm.nih.gov/pubmed/30931207
http://dx.doi.org/10.3762/bjnano.10.65
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author Andrés, Miguel A
Sicard, Clemence
Serre, Christian
Roubeau, Olivier
Gascón, Ignacio
author_facet Andrés, Miguel A
Sicard, Clemence
Serre, Christian
Roubeau, Olivier
Gascón, Ignacio
author_sort Andrés, Miguel A
collection PubMed
description This work reports on the fabrication, optimization and characterization of ultrathin films containing submicrometer particles (sMPs) of the hydrophilic and water stable UiO-66-COOH(Zr) metal organic framework (MOF). MOF particles of ≈200 nm have been synthesized and assembled at the air–water interface by the Langmuir–Blodgett technique. The use of different solvents, mixtures of solvents and surfactants has been investigated in order to improve the stability of MOF dispersions and reduce particle aggregation. The compact MOF/surfactant films containing 10 wt % octadecylphoshonic acid (ODP) have been deposited on substrates of different nature by Langmuir–Blodgett (LB) and Langmuir–Schaefer (LS) methods, showing that the presence of even only one MOF/ODP monolayer can increase the water contact angle of highly hydrophilic substrates such as mica or glass up to 120°. These films were characterized by scanning electron microscopy, grazing incidence X-ray diffraction, Fourier transform infrared spectroscopy and atomic force microscopy, revealing the formation of a continuous film where ODP molecules adopt an almost vertical position and cover MOF particles. Moreover, the presence of MOF particles significantly enhances the surface roughness and allows ultrathin, hydrophobic coverage to be obtained. Finally, it has been shown that the crystallinity and the porosity of the MOF remains almost unaltered in MOF/ODP films.
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spelling pubmed-64235632019-03-29 Ultrathin hydrophobic films based on the metal organic framework UiO-66-COOH(Zr) Andrés, Miguel A Sicard, Clemence Serre, Christian Roubeau, Olivier Gascón, Ignacio Beilstein J Nanotechnol Full Research Paper This work reports on the fabrication, optimization and characterization of ultrathin films containing submicrometer particles (sMPs) of the hydrophilic and water stable UiO-66-COOH(Zr) metal organic framework (MOF). MOF particles of ≈200 nm have been synthesized and assembled at the air–water interface by the Langmuir–Blodgett technique. The use of different solvents, mixtures of solvents and surfactants has been investigated in order to improve the stability of MOF dispersions and reduce particle aggregation. The compact MOF/surfactant films containing 10 wt % octadecylphoshonic acid (ODP) have been deposited on substrates of different nature by Langmuir–Blodgett (LB) and Langmuir–Schaefer (LS) methods, showing that the presence of even only one MOF/ODP monolayer can increase the water contact angle of highly hydrophilic substrates such as mica or glass up to 120°. These films were characterized by scanning electron microscopy, grazing incidence X-ray diffraction, Fourier transform infrared spectroscopy and atomic force microscopy, revealing the formation of a continuous film where ODP molecules adopt an almost vertical position and cover MOF particles. Moreover, the presence of MOF particles significantly enhances the surface roughness and allows ultrathin, hydrophobic coverage to be obtained. Finally, it has been shown that the crystallinity and the porosity of the MOF remains almost unaltered in MOF/ODP films. Beilstein-Institut 2019-03-06 /pmc/articles/PMC6423563/ /pubmed/30931207 http://dx.doi.org/10.3762/bjnano.10.65 Text en Copyright © 2019, Andrés et al. https://creativecommons.org/licenses/by/4.0https://www.beilstein-journals.org/bjnano/termsThis is an Open Access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0). Please note that the reuse, redistribution and reproduction in particular requires that the authors and source are credited. The license is subject to the Beilstein Journal of Nanotechnology terms and conditions: (https://www.beilstein-journals.org/bjnano/terms)
spellingShingle Full Research Paper
Andrés, Miguel A
Sicard, Clemence
Serre, Christian
Roubeau, Olivier
Gascón, Ignacio
Ultrathin hydrophobic films based on the metal organic framework UiO-66-COOH(Zr)
title Ultrathin hydrophobic films based on the metal organic framework UiO-66-COOH(Zr)
title_full Ultrathin hydrophobic films based on the metal organic framework UiO-66-COOH(Zr)
title_fullStr Ultrathin hydrophobic films based on the metal organic framework UiO-66-COOH(Zr)
title_full_unstemmed Ultrathin hydrophobic films based on the metal organic framework UiO-66-COOH(Zr)
title_short Ultrathin hydrophobic films based on the metal organic framework UiO-66-COOH(Zr)
title_sort ultrathin hydrophobic films based on the metal organic framework uio-66-cooh(zr)
topic Full Research Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6423563/
https://www.ncbi.nlm.nih.gov/pubmed/30931207
http://dx.doi.org/10.3762/bjnano.10.65
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