Metal–Organic Framework Thin Films: From Fundamentals to Applications.

Bétard, Angèlique; Fischer, Roland A.

doi:10.1021/cr200167v

Cited by 1,091 publications

(736 citation statements)

References 130 publications

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“…It has been shown that metal organic frameworks (MOFs), because of their unique properties, such as high surface area, adjustable shape and size of the pores and inner cavities, offer an ideal platform for the development of this sensitive layer [32][33][34]. The sensing mechanism of the LPG towards VOCs is based on the change of the refractive index of the sensitive layer due to the analyte of interest.…”

Section: Introductionmentioning

confidence: 99%

Highly sensitive volatile organic compounds vapour measurements using a long period grating optical fibre sensor coated with metal organic framework ZIF-8

Hromádka

Tokay

Correia

et al. 2018

Sensors and Actuators B: Chemical

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a b s t r a c tAn optical fibre long period grating (LPG) based volatile organic compound (VOC) sensor coated with ZIF-8, a material from the zeolite imidazolate framework (ZIF) family, functional coating is presented. ZIF-8 film was deposited onto the surface of the LPG using an in-situ crystallization technique by mixing freshly prepared 12.5 mM zinc nitrate hexahydrate and 25 mM 2-metyl-imidazole solutions in methanol. A concentration specific response to acetone, ethanol and methanol vapour was obtained over the high concentration range up to tens thousands ppm. The LPG based sensor works at phase-matching turning point (PMTP) and such operates at the highest sensitivity. A novel approach for the data analysis based on the measurement of the bandwidth of the U-shaped attenuation band of the LPG is introduced. The optimized sensor shows a sensitivity of 0.015 ± 0.001 and 0.018 ± 0.0015 nm/ppm and limit of detection (LOD) of 6.67 and 5.56 ppm for acetone and ethanol respectively.

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Section: Introductionmentioning

confidence: 99%

Highly sensitive volatile organic compounds vapour measurements using a long period grating optical fibre sensor coated with metal organic framework ZIF-8

Hromádka

Tokay

Correia

et al. 2018

Sensors and Actuators B: Chemical

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“…MOFs are highly porous crystalline materials consisting of inorganic metal nodes coordinated to organic linkers‐ functionalities that enable highly versatile chemical properties. The synthesis of oriented MOF films received significant attention due to their potential use as membranes, sensing and photo‐responsive devices, and (electro)catalysts 4, 5, 6, 7. Surface‐anchored films of metal‐organic frameworks (SURMOFs) can be synthesized in a straightforward manner by using a liquid phase layer‐by‐layer (LbL) synthesis approach 8, 9.…”

Section: Introductionmentioning

confidence: 99%

Mechanistic Insights into Growth of Surface‐Mounted Metal‐Organic Framework Films Resolved by Infrared (Nano‐) Spectroscopy

Ristanović

Mandemaker

et al. 2017

Chemistry A European J

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Control over assembly, orientation, and defect‐free growth of metal‐organic framework (MOF) films is crucial for their future applications. A layer‐by‐layer approach is considered a suitable method to synthesize highly oriented films of numerous MOF topologies, but the initial stages of the film growth remain poorly understood. Here we use a combination of infrared (IR) reflection absorption spectroscopy and atomic force microscopy (AFM)‐IR imaging to investigate the assembly and growth of a surface mounted MOF (SURMOF) film, specifically HKUST‐1. IR spectra of the films were measured with monolayer sensitivity and <10 nm spatial resolution. In contrast to the common knowledge of LbL SURMOF synthesis, we find evidence for the surface‐hindered growth and large presence of copper acetate precursor species in the produced MOF thin‐films. The growth proceeds via a solution‐mediated mechanism where the presence of weakly adsorbed copper acetate species leads to the formation of crystalline agglomerates with a size that largely exceeds theoretical growth limits. We report the spectroscopic characterization of physisorbed copper acetate surface species and find evidence for the large presence of unexchanged and mixed copper‐paddle‐wheels. Based on these insights, we were able to optimize and automatize synthesis methods and produce (100) oriented HKUST‐1 thin‐films with significantly shorter synthesis times, and additionally use copper nitrate as an effective synthesis precursor.

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“…In particular, the integration of MOFs as functional materials into nanotechnological devices, such as chemical sensors, requires the deposition of MOF thin films onto solid supports. 10 In recent years studies dealing with the fabrication of surface-mounted MOFs 10 (SURMOFs) have attracted increasing interest, and a large number of processes have been used to deposit MOF coatings onto solid substrates. Generally, the direct growth of MOF films by immersion of the solid support in the reaction mixture 11 produces films with thicknesses that range from some hundreds of nanometers to several micrometers.…”

Section: Introductionmentioning

confidence: 99%

Langmuir–Blodgett Films of the Metal–Organic Framework MIL-101(Cr): Preparation, Characterization, and CO₂ Adsorption Study Using a QCM-Based Setup

Benito

Sorribas

Lucas

et al. 2016

ACS Appl. Mater. Interfaces

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This work reports the fabrication and characterization of Langmuir-Blodgett films of nanoparticles (size 51 ± 10 nm) of the metal organic framework MIL-101(Cr). LB film characterization by SEM, UV-vis, GIXRD and QCM has shown that the addition of 1 wt.% of behenic acid to MOF dispersion allows obtaining dense monolayers at the airwater interface that can be deposited onto solid substrates of different nature with transfer ratios close to 1. Moreover, a QCM-based setup has been built and used for the first time to measure CO 2 adsorption isotherms at 303 K on MOF LB films, proving that LB films with MOF masses between 1.2 (1 layer) and 2.3 (2 layers) micrograms can be used to obtain accurate adsorption values at 100 kPa, similar to those obtained by conventional adsorption methods that require much larger MOF quantities (tens of milligrams).3

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Metal–Organic Framework Thin Films: From Fundamentals to Applications.

Cited by 1,091 publications

References 130 publications

Highly sensitive volatile organic compounds vapour measurements using a long period grating optical fibre sensor coated with metal organic framework ZIF-8

Highly sensitive volatile organic compounds vapour measurements using a long period grating optical fibre sensor coated with metal organic framework ZIF-8

Mechanistic Insights into Growth of Surface‐Mounted Metal‐Organic Framework Films Resolved by Infrared (Nano‐) Spectroscopy

Langmuir–Blodgett Films of the Metal–Organic Framework MIL-101(Cr): Preparation, Characterization, and CO₂ Adsorption Study Using a QCM-Based Setup

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Metal–Organic Framework Thin Films: From Fundamentals to Applications.

Cited by 1,091 publications

References 130 publications

Highly sensitive volatile organic compounds vapour measurements using a long period grating optical fibre sensor coated with metal organic framework ZIF-8

Highly sensitive volatile organic compounds vapour measurements using a long period grating optical fibre sensor coated with metal organic framework ZIF-8

Mechanistic Insights into Growth of Surface‐Mounted Metal‐Organic Framework Films Resolved by Infrared (Nano‐) Spectroscopy

Langmuir–Blodgett Films of the Metal–Organic Framework MIL-101(Cr): Preparation, Characterization, and CO2 Adsorption Study Using a QCM-Based Setup

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Langmuir–Blodgett Films of the Metal–Organic Framework MIL-101(Cr): Preparation, Characterization, and CO₂ Adsorption Study Using a QCM-Based Setup