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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doaj-939c88e54a7047b5970805b9de9f95402020-11-25T02:15:10ZengBeilstein-InstitutBeilstein Journal of Nanotechnology2190-42862019-03-0110165466510.3762/bjnano.10.652190-4286-10-65Ultrathin hydrophobic films based on the metal organic framework UiO-66-COOH(Zr)Miguel A. Andrés0Clemence Sicard1Christian Serre2Olivier Roubeau3Ignacio Gascón4Departamento de Química Física and Instituto de Nanociencia de Aragón (INA), Universidad de Zaragoza, 50009 Zaragoza, SpainInstitut Lavoisier de Versailles, UVSQ, CNRS, Université Paris-Saclay, 45 avenue de États-Unis, 78035 Versailles Cedex, FranceInstitut des Matériaux Poreux de Paris, FRE 2000 CNRS Ecole Normale Supérieure de Paris, Ecole Supérieure de Physique et de Chimie Industrielles de Paris, PSL Research University, 75005 Paris, FranceInstituto de Ciencia de Materiales de Aragón (ICMA), CSIC and Universidad de Zaragoza, 50009 Zaragoza, SpainDepartamento de Química Física and Instituto de Nanociencia de Aragón (INA), Universidad de Zaragoza, 50009 Zaragoza, SpainThis 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.https://doi.org/10.3762/bjnano.10.65hydrophobic coatingLangmuir–Blodgett (LB) filmsmetal organic framework (MOF)surface modificationUiO-66-COOH(Zr) |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Miguel A. Andrés Clemence Sicard Christian Serre Olivier Roubeau Ignacio Gascón |
spellingShingle |
Miguel A. Andrés Clemence Sicard Christian Serre Olivier Roubeau Ignacio Gascón Ultrathin hydrophobic films based on the metal organic framework UiO-66-COOH(Zr) Beilstein Journal of Nanotechnology hydrophobic coating Langmuir–Blodgett (LB) films metal organic framework (MOF) surface modification UiO-66-COOH(Zr) |
author_facet |
Miguel A. Andrés Clemence Sicard Christian Serre Olivier Roubeau Ignacio Gascón |
author_sort |
Miguel A. Andrés |
title |
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_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_sort |
ultrathin hydrophobic films based on the metal organic framework uio-66-cooh(zr) |
publisher |
Beilstein-Institut |
series |
Beilstein Journal of Nanotechnology |
issn |
2190-4286 |
publishDate |
2019-03-01 |
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. |
topic |
hydrophobic coating Langmuir–Blodgett (LB) films metal organic framework (MOF) surface modification UiO-66-COOH(Zr) |
url |
https://doi.org/10.3762/bjnano.10.65 |
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