Fabrication of zinc-dicarboxylate- and zinc-pyrazolate-carboxylate-framework thin films through vapour–solid deposition

Medishetty, Raghavender; Zhang, Zongji; Sadlo, Alexander; Cwik, Stefan; Peeters, Daniel; Henke, Sebastian; Nagarathinam, Mangayarkarasi; Devi, Anjana

doi:10.1039/c8dt00352a

Cited by 16 publications

(13 citation statements)

References 39 publications

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“…Vapor-phase growth of MOFs is a rapidly expanding area, 20 as illustrated by reports on the deposition of ZIF-67, 21 CuBDC, 22 CuCDC, 22 HKUST-1, 23 and a Zn-carboxylate-pyrazolate MOF-5 isotype structure. 24 Furthermore, related approaches have been developed such as CVD of amorphous precursors followed by postdeposition crystallization to form MOF-5, 25 IRMOF-8, 26 UiO-66, 27 and UiO-66-NH 2 28 and the deposition of crystalline coordination compounds (e.g., MAF-252, 29 CaBDC, 30 and different CuBDC polymorphs 22,31 ). Moreover, MOF-CVD has been successfully implemented in the fabrication of sensors, 32 microsupercapacitors, 33,34 and gas separation membranes.…”

Section: Introductionmentioning

confidence: 99%

Solvent-Free Powder Synthesis and MOF-CVD Thin Films of the Large-Pore Metal–Organic Framework MAF-6

et al. 2020

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A simple solvent-and catalyst-free method is presented for the synthesis of the large-pore metal−organic framework (MOF) MAF-6 (RHO-Zn(eIm) 2) based on the reaction of ZnO with 2-ethylimidazole vapor at temperatures ≤100°C. By translating this method to a chemical vapor deposition (CVD) protocol, crystalline films of a large-pore material could be deposited for the first time entirely from the vapor phase. A combination of positron annihilation lifetime spectroscopy (PALS) and Kr physisorption measurements confirmed the porosity of these MOF-CVD films and the size of the MAF-6 supercages (diameter ∼2 nm), in close agreement with powder data and calculations. MAF-6 powders and films were further characterized by X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), pair distribution function (PDF), and extended X-ray absorption fine structure (EXAFS). The exceptional uptake capacity of MAF-6 in comparison to ZIF-8 is demonstrated by vapor-phase loading of a molecule larger than the ZIF-8 windows. spectra; PALS data and implantation profiles; EDS data; fluorescence emission spectra (PDF)

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Section: Introductionmentioning

confidence: 99%

Solvent-Free Powder Synthesis and MOF-CVD Thin Films of the Large-Pore Metal–Organic Framework MAF-6

et al. 2020

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“…Vapor-phase growth of MOFs is a rapidly expanding area, 20 as illustrated by reports on the deposition of ZIF-67, 21 CuBDC, 22 CuCDC, 22 HKUST-1, 23 and a Zn-carboxylate-pyrazolate MOF-5 isotype structure. 24 Furthermore, related approaches have been developed such as CVD of amorphous precursors followed by postdeposition crystallization to form MOF-5, 25 IRMOF-8, 26 UiO-66 27 and UiO-66-NH2 28 , and the deposition of crystalline coordination compounds (e.g., CaBDC 29 , different CuBDC polymorphs 22,30 ). Moreover, MOF-CVD has been successfully implemented in the fabrication of sensors, 31 microsupercapacitors 32,33 and gas separation membranes.…”

Section: Introductionmentioning

confidence: 99%

Solvent-Free Powder Synthesis and MOF-CVD Thin Films of the Mesoporous Metal-Organic Framework MAF-6

Stassin¹,

Stassen²,

Marreiros³

et al. 2019

Preprint

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A simple solvent- and catalyst-free method is presented for the synthesis of the mesoporous metal-organic framework (MOF) MAF-6 (RHO-Zn(eIm)2) based on the reaction of ZnO with 2-ethylimidazole vapor at temperatures ≤ 100 °C. By translating this method to a chemical vapor deposition (CVD) protocol, mesoporous crystalline films could be deposited for the first time entirely from the vapor phase. A combination of PALS and Kr physisorption measurements confirmed the porosity of these MOF-CVD films and the size of the MAF-6 supercages (diam. ~2 nm), in close agreement with powder data and calculations. MAF-6 powders and films were further characterized by XRD, TGA, SEM, FTIR, PDF and EXAFS. The exceptional uptake capacity of the mesoporous MAF-6 in comparison to the microporous ZIF-8 is demonstrated by vapor-phase loading of a molecule larger than the ZIF-8 windows.

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“…The MAF‐6 has bigger pores than ZIF‐8, which is applicable for adsorbing large molecules . There also have been trials of preparing the initial metal oxide layers in various ways, such as ZnO layers grown by CVD for the growth of MOF‐5 type thin films and CuO layers grown by PVD for the growth of various Cu‐based MOF thin films …”

Section: Cvd‐based Gas‐phase Mof Thin Film Growthmentioning

confidence: 99%

“…The MAF-6 has bigger pores than ZIF-8, which is applicable for adsorbing large molecules. [40] There also have been trials of preparing the initial metal oxide layers in various ways, such as ZnO layers grown by CVD for the growth of MOF-5 type thin films [41] and CuO layers grown by PVD for the growth of various Cu-based MOF thin films. [42] Ma et al [38] also applied an analogous ZIF-8 growth method to the growth of ZIF-8 membranes by transforming ZnO layers that had been deposited on permeable Al 2 O 3 substrates, which is schematically described in Figure 3a.…”

Section: Cvd-based Gas-phase Mof Thin Film Growthmentioning

confidence: 99%

Current Progress and Future Directions in Gas‐Phase Metal‐Organic Framework Thin‐Film Growth

Han

Mullins

2020

ChemSusChem

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Deposition of materials as a thin film is important for various applications, such as sensors, microelectronic devices, and membranes. There have been breakthroughs in gas-phase metal-organic framework (MOF) thin-film growth, which is more applicable to micro-and nanofabrication processes and also less harmful to the environment than solvent-based methods. Three different types of gas-phase MOF thin film deposition methods have been developed using chemical vapor deposition (CVD), atomic layer deposition (ALD), and physical vapor deposition (PVD)-CVD combined techniques. The CVD-based method basically converts metal oxide layers into MOF thin films by exposing the surface to ligand vapor. The ALD-based method allows growing MOF thin films following layer-by-layer (LBL) growth by sequentially exposing gas-phase metal and ligand precursors. The PVD-CVD method uses PVD for metal deposition and CVD for ligand deposition, which is similar to LBL growth. These gas-phase growth methods can broaden the use of MOFs in diverse areas. Herein, the current progress of gas-phase MOF thin film growth is discussed and future directions suggested.

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Fabrication of zinc-dicarboxylate- and zinc-pyrazolate-carboxylate-framework thin films through vapour–solid deposition

Cited by 16 publications

References 39 publications

Solvent-Free Powder Synthesis and MOF-CVD Thin Films of the Large-Pore Metal–Organic Framework MAF-6

Solvent-Free Powder Synthesis and MOF-CVD Thin Films of the Large-Pore Metal–Organic Framework MAF-6

Solvent-Free Powder Synthesis and MOF-CVD Thin Films of the Mesoporous Metal-Organic Framework MAF-6

Current Progress and Future Directions in Gas‐Phase Metal‐Organic Framework Thin‐Film Growth

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